MACK CALI REALTY L P
10-K405, 1999-03-04
REAL ESTATE INVESTMENT TRUSTS
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
 
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                   FORM 10-K
 
  /X/    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934
 
         FOR THE FISCAL YEAR ENDED DECEMBER 31, 1998
  / /    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934
 
                       COMMISSION FILE NUMBER: 333-57103
                            ------------------------
 
                             MACK-CALI REALTY, L.P.
 
             (Exact Name of Registrant as specified in its charter)
 
                  DELAWARE                             22-3315804
      (State or other jurisdiction of                 (IRS Employer
       incorporation or organization)              Identification No.)
 
  11 COMMERCE DRIVE, CRANFORD, NEW JERSEY              07016-3599
  (Address of principal executive offices)             (Zip code)
 
                                 (908) 272-8000
              (Registrant's telephone number, including area code)
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:
 
           (Title of Each Class)             (Name of Each Exchange on Which
                                                       Registered)
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
                                      None
                            ------------------------
 
    Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes /X/  No / /
 
    Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of the registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendments to this Form 10-K. /X/
 
    LOCATION OF EXHIBIT INDEX:  The index of exhibits is contained in Part IV
herein on page number 63.
 
    DOCUMENTS INCORPORATED BY REFERENCE:  Portions of the Mack-Cali Realty
Corporation's definitive proxy statement to be issued in conjunction with the
Mack-Cali Realty Corporation's annual meeting of shareholders to be held on May
19, 1999 are incorporated by reference in Part III of this Form 10-K.
 
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<PAGE>
                               TABLE OF CONTENTS
                                   FORM 10-K
 
<TABLE>
<CAPTION>
                                                                                                            PAGE NO.
                                                                                                          -------------
<S>                                                                                                       <C>
PART I
    Item 1  Business....................................................................................            3
    Item 2  Properties..................................................................................           19
    Item 3  Legal Proceedings...........................................................................           48
    Item 4  Submission of Matters to a Vote of Security Holders.........................................           48
 
PART II
    Item 5  Market for Registrant's Common Stock and Related Stockholder Matters........................           48
    Item 6  Selected Financial Data.....................................................................           49
    Item 7  Management's Discussion and Analysis of Financial Condition and Results of Operations.......           51
    Item 7a Quantitative and Qualitative Disclosures About Market Risk..................................           61
    Item 8  Financial Statements and Supplementary Data.................................................           62
    Item 9  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure........           62
 
PART III
    Item 10  Directors and Executive Officers of the Registrant.........................................           62
    Item 11  Executive Compensation.....................................................................           62
    Item 12  Security Ownership of Certain Beneficial Owners and Management.............................           62
    Item 13  Certain Relationships and Related Transactions.............................................           62
 
PART IV
    Item 14  Exhibits, Financial Statements, Schedules and Reports on Form 8-K..........................           63
</TABLE>
 
                                       2
<PAGE>
                                     PART I
 
ITEM 1. BUSINESS
 
GENERAL
 
    Mack-Cali Realty, L.P., a Delaware limited partnership, (together with its
subsidiaries, the "Operating Partnership"), is a majority-owned subsidiary of
Mack-Cali Realty Corporation, a Maryland Corporation (the "Corporation"). The
Operating Partnership owns and operates a portfolio comprised predominantly of
Class A office and office/flex properties located primarily in the Northeast, as
well as commercial real estate leasing, management, acquisition, development and
construction businesses. As of December 31, 1998, the Operating Partnership's
portfolio consisted of 249 properties, aggregating approximately 27.8 million
square feet, plus developable land. Included in the Operating Partnership's
portfolio are 244 wholly-owned properties aggregating approximately 26.8 million
square feet (collectively, the "Properties"). The Properties are comprised of
153 office properties aggregating approximately 22.5 million square feet (the
"Office Properties"), 79 office/flex properties aggregating approximately 3.9
million square feet (the "Office/Flex Properties") six industrial/warehouse
properties aggregating approximately 387,400 square feet (the
"Industrial/Warehouse Properties"), two multi-family residential complexes
consisting of 453 units, two stand-alone retail properties and two land leases.
The Operating Partnership's portfolio also includes ownership interests in
unconsolidated joint ventures which own four office properties and one
office/flex property, aggregating approximately 1.0 million square feet. See
"Investments in Unconsolidated Joint Ventures." Unless otherwise indicated, all
references to square feet represent net rentable area. As of December 31, 1998,
the Office Properties, Office/Flex Properties and Industrial/Warehouse
Properties were approximately 96.6 percent leased to over 2,400 tenants. The
Operating Partnership's portfolio is located in 12 states, primarily in the
Northeast, plus the District of Columbia.
 
    The General Partner of the Operating Partnership is the Corporation, which
has elected to be treated and operated so as to qualify as a real estate
investment trust ("REIT") under the Internal Revenue Code of 1986, as amended.
The common stock, par value $0.01 (the "Common Stock") of the Corporation is
listed on the New York Stock Exchange and the Pacific Exchange under the symbol
"CLI." Substantially all of the Corporation's interests in the Properties are
held through, and its operations are conducted through, the Operating
Partnership, or through entities controlled by the Operating Partnership. As of
March 1, 1999, 58,287,261 shares of Common Stock were outstanding. Also as of
March 1, 1999, the Corporation owned a 77.8 percent general partnership interest
in the Operating Partnership, assuming conversion of all preferred limited
partnership units of the Operating Partnership into common limited partnership
units. Without giving effect to the preferred limited partnership units of the
Operating Partnership, the Corporation would own an 86.3 percent general
partnership interest in the Operating Partnership. As used herein, the term
"Units" refers to common limited partnership interests in the Operating
Partnership. Units are redeemable for an equal number of shares of Common Stock
or cash.
 
    The Operating Partnership's strategy has been to focus its acquisition,
operation and development of office properties in markets and sub-markets where
it is, or can become, a significant and preferred owner and operator. The
Operating Partnership believes that its Properties have excellent locations and
access and are well-maintained and professionally managed. As a result, the
Operating Partnership believes that its Properties attract high quality tenants
and achieve among the highest rental, occupancy and tenant retention rates
within their markets. The Operating Partnership will continue this strategy by
expanding, through acquisitions or development in markets and sub-markets where
it has, or can achieve, similar status. Consistent with its growth strategy,
during 1998, the Operating Partnership acquired or placed in service 56 office
and office/flex properties aggregating approximately 4.9 million square feet,
for an aggregate cost of approximately $686.6 million (the "Property
Acquisitions"). In addition, the Operating Partnership acquired ownership
interests in unconsolidated joint ventures which own five office and office/
flex properties, totaling approximately 1.0 million square feet, for a net
investment of approximately $66.5 million. Management believes that the recent
trend towards rising rental and occupancy rates in the
 
                                       3
<PAGE>
Operating Partnership's sub-markets continues to present significant
opportunities for internal growth. The Operating Partnership also may develop
properties in such sub-markets, particularly with a view towards the development
of the Operating Partnership's vacant land holdings, which principally are
located adjacent to the Operating Partnership's existing properties. Management
believes that its extensive market knowledge provides the Operating Partnership
with a significant competitive advantage which is further enhanced by its strong
reputation for, and emphasis on, delivering highly responsive, professional
management services. See "Business Strategies".
 
    The principals of Cali Associates, the entity to whose business the
Operating Partnership succeeded in 1994, have been involved in the development,
leasing, management, operation and disposition of commercial and residential
properties in Northern and Central New Jersey for over 50 years and have been
primarily focusing on office building development for the past 20 years. In
January 1997, the Operating Partnership acquired 65 Class A properties located
in Westchester County, New York and Fairfield County, Connecticut, aggregating
approximately 4.1 million square feet from the Robert Martin Company, LLC and
affiliates for a total cost of approximately $450.0 million (the "RM
Transaction"). In December 1997, the Operating Partnership acquired 54 Class A
office properties, primarily in New Jersey and Texas, aggregating approximately
9.2 million square feet, from The Mack Company and Patriot American Office Group
for a total cost of approximately $1.1 billion (the "Mack Transaction"). Upon
the completion of the Mack Transaction, the Operating Partnership changed its
name from Cali Realty, L.P. to Mack-Cali Realty, L.P.
 
    The Operating Partnership's executive officers have been employed by the
Corporation and/or its predecessor companies for an average of approximately 10
years. The Operating Partnership and its predecessors have extensive development
experience, having developed 11.9 million square feet or 44.4 percent of the
Operating Partnership's portfolio.
 
    The Operating Partnership performs substantially all construction,
development, leasing, management and tenant improvements on an "in-house" basis
and is self-administered and self-managed. The Operating Partnership was formed
on May 31, 1994. The Operating Partnership's executive offices are located at 11
Commerce Drive, Cranford, New Jersey 07016, and its telephone number is (908)
272-8000. The Corporation has an internet website at "http://www.mack-cali.com".
 
                              BUSINESS STRATEGIES
 
OPERATIONS
 
    REPUTATION:  The Operating Partnership has established a reputation as a
highly-regarded landlord with an emphasis on delivering professional quality
tenant services in buildings it owns or manages. The Operating Partnership
believes that its continued success depends in part on enhancing its reputation
as an operator of choice, which will facilitate the retention of current tenants
and the attraction of new tenants. The Operating Partnership believes it
provides a superior level of service to its tenants, which in turn creates
higher than average occupancy rates, as well as lower than average turnover.
 
    COMMUNICATION WITH TENANTS:  The Operating Partnership's property management
department emphasizes frequent communication with tenants to ensure first-class
service to the Properties. Property managers generally are located on site at
the Properties to provide convenient access to management and to ensure that the
Properties are well-maintained. Property management's primary responsibility is
ensuring that buildings are operated at peak efficiency in order to meet both
the Operating Partnership's and tenants' needs and expectations. The property
managers additionally budget and oversee capital improvements and building
system upgrades to enhance the Properties' competitive advantages in their
markets.
 
    Additionally, the Operating Partnership's leasing department develops and
maintains long-term relationships with its diverse tenant base, and coordinates
leasing, expansion, relocation and build-to-suit
 
                                       4
<PAGE>
opportunities within its portfolio. This approach allows the Operating
Partnership to offer office space in the appropriate size and location to
current or prospective tenants in any of its sub-markets.
 
GROWTH
 
    INTERNAL GROWTH:  The Operating Partnership's objectives are to maximize
growth in funds from operations and to enhance the value of its portfolio
through effective management, acquisition and development strategies. The
Operating Partnership seeks to maximize the value of its existing portfolio
through implementing operating strategies to produce increased effective rental
and occupancy rates and decreased concession and tenant installation costs. The
Operating Partnership believes that it has a unique opportunity for internal
growth through re-leasing space at higher effective rents with contractual rent
increases and developing or redeveloping space for its diverse base of high
credit tenants, which include AT&T Corporation, Allstate Insurance Company and
International Business Machines Corporation. In addition, the Operating
Partnership's management seeks volume discounts to take advantage of the
Operating Partnership's size and dominance in particular sub-markets, and
operating efficiencies through the use of in-house management, leasing,
marketing, financing, accounting, legal and construction functions. The
Operating Partnership believes these combined factors should provide the
Operating Partnership with sustainable internal growth over the next several
years.
 
    EXTERNAL GROWTH:  The Operating Partnership also believes that opportunities
exist to increase funds from operations by acquiring or developing properties
with attractive returns in sub-markets where, based on its expertise in leasing,
managing and operating properties, it is, or can become, a significant and
preferred owner and operator. The Operating Partnership will acquire, invest in
or develop additional properties that: (i) provide attractive initial yields
with significant potential for growth in cash flow from operations; (ii) are
well located, of high quality and competitive in their respective sub-markets;
(iii) are located in its existing sub-markets or in sub-markets in which the
Operating Partnership can become a significant and preferred owner or operator;
and (iv) have been under-managed or are otherwise capable of improved
performance through intensive management, capital improvements and/or leasing
that will result in increased occupancy and rental revenues.
 
    DEVELOPMENT:  In addition, the Operating Partnership owns 238 acres of land
held for development, on which it can build up to approximately 10 million
square feet of office space. The Operating Partnership may selectively develop
buildings where such development will result in a favorable risk-adjusted return
on investment in coordination with the above operating strategies. Such
development will primarily occur only when leases have been executed prior to
construction, in stable sub-markets where the demand for such space exceeds
available supply and where the Operating Partnership is, or can become, a
significant and preferred owner and operator.
 
FINANCIAL
 
    The Operating Partnership currently intends to maintain a ratio of debt to
total market capitalization (total debt of the Operating Partnership as a
percentage of the total market value of issued and outstanding units, including
interests redeemable therefor, plus total debt) of approximately 50 percent or
less. Although there is no limit in the Operating Partnership's organizational
documents on the amount of indebtedness that the Operating Partnership may
incur, the Operating Partnership has entered into certain financial agreements
which contain covenants that limit the Operating Partnership's ability to incur
indebtedness under certain circumstances. As of December 31, 1998, the Operating
Partnership's total debt constituted approximately 38.5 percent of the total
market capitalization of the Operating Partnership. The Operating Partnership
will utilize the most appropriate sources of capital for future acquisitions,
development, capital improvements and other investments, which may include funds
from operating activities, short-term and long-term borrowings (including draws
on the Operating Partnership's revolving credit facilities), and issuances of
debt securities or additional equity securities.
 
                                       5
<PAGE>
EMPLOYEES
 
    As of December 31, 1998, the Operating Partnership had no employees. The
Corporation had over 450 employees.
 
COMPETITION
 
    The leasing of real estate is highly competitive. The Properties compete for
tenants with lessors and developers of similar properties located in its
respective markets primarily on the basis of location, rent charged, services
provided, and the design and condition of the Properties. The Operating
Partnership also experiences competition when attempting to acquire desirable
real estate, including competition from domestic and foreign financial
institutions, other REITs, life insurance companies, pension trusts, trust
funds, partnerships and individual investors.
 
REGULATIONS
 
    Many laws and governmental regulations are applicable to the Properties and
changes in these laws and regulations, or their interpretation by agencies and
the courts, occur frequently.
 
    Under various laws and regulations relating to the protection of the
environment, an owner of real estate may be held liable for the costs of removal
or remediation of certain hazardous or toxic substances located on or in the
property. These laws often impose liability without regard to whether the owner
was responsible for, or even knew of, the presence of such substances. The
presence of such substances may adversely affect the owner's ability to rent or
sell the property or to borrow using such property as collateral and may expose
it to liability resulting from any release of, or exposure to, such substances.
Persons who arrange for the disposal or treatment of hazardous or toxic
substances at another location may also be liable for the costs of removal or
remediation of such substances at the disposal or treatment facility, whether or
not such facility is owned or operated by such person. Certain environmental
laws impose liability for release of asbestos-containing materials into the air,
and third parties may also seek recovery from owners or operators of real
properties for personal injury associated with asbestos-containing materials and
other hazardous or toxic substances. In connection with the ownership (direct or
indirect), operation, management and development of real properties, the
Operating Partnership may be considered an owner or operator of such properties
or as having arranged for the disposal or treatment of hazardous or toxic
substances and, therefore, potentially liable for removal or remediation costs,
as well as certain other related costs, including governmental penalties and
injuries to persons and property.
 
    There can be no assurance that (i) future laws, ordinances or regulations
will not impose any material environmental liability, (ii) the current
environmental condition of the Properties will not be affected by tenants, by
the condition of land or operations in the vicinity of the Properties (such as
the presence of underground storage tanks), or by third parties unrelated to the
Operating Partnership, or (iii) the Operating Partnership's assessments reveal
all environmental liabilities and that there are no material environmental
liabilities of which the Operating Partnership is aware. If compliance with the
various laws and regulations, now existing or hereafter adopted, exceeds the
Operating Partnership's budgets for such items, the Operating Partnership's
ability to make expected distributions to unitholders could be adversely
affected.
 
    There are no other laws or regulations which have a material effect on the
Operating Partnership's operations, other than typical federal, state and local
laws affecting the development and operation of real property, such as zoning
laws.
 
INDUSTRY SEGMENTS
 
    The Operating Partnership operates in only one industry segment-real estate.
The Operating Partnership does not have any foreign operations and its business
is not seasonal.
 
                                       6
<PAGE>
RECENT DEVELOPMENTS
 
    The Operating Partnership's funds from operations (after adjustment for
straight-lining of rents) for the year ended December 31, 1998 was $216.9
million as compared to $111.8 million for the year ended December 31, 1997. As a
result of the Operating Partnership's improved operating performance, in
September 1998, the Corporation announced a 10 percent increase in its regular
quarterly dividend and distribution, commencing with the third quarter of 1998,
from $0.50 per share ($2.00 per share of Common Stock on an annualized basis) to
$0.55 per share of Common Stock ($2.20 per share of Common Stock on an
annualized basis). The Corporation declared a cash dividend of $0.55 per share
on December 15, 1998 to shareholders of record on January 6, 1999. Also, on that
date, the Operating Partnership declared a cash distribution to the limited
partners in the Operating Partnership of $0.55 per Unit. The dividend and
distributions were paid on January 26, 1999.
 
    In 1998, the Operating Partnership:
 
    - acquired 52 operating properties aggregating 4.7 million square feet at a
      total cost of approximately $663.6 million,
 
    - placed in service four properties aggregating 218,600 square feet at a
      total cost of approximately $23.0 million,
 
    - acquired seven redevelopment properties/developable land parcels at a
      total cost of approximately $41.4 million, and
 
    - acquired interests in unconsolidated joint ventures with an investment of
      approximately $66.5 million at December 31, 1998.
 
    These transactions increased the total square footage of the Operating
Partnership's portfolio by 26.7 percent.
 
                                       7
<PAGE>
OPERATING PROPERTY ACQUISITIONS
 
    The Operating Partnership acquired the following operating properties during
the year ended December 31, 1998:
<TABLE>
<CAPTION>
ACQUISITION                                                                                       # OF
DATE                 PROPERTY/PORTFOLIO NAME                         LOCATION                    BLDGS.     SQUARE FEET
- -----------  ---------------------------------------  ---------------------------------------  -----------  ------------
<S>          <C>                                      <C>                                      <C>          <C>
OFFICE
- -----------
2/05/98      500 West Putnam Avenue(b)                Greenwich, Fairfield County, CT                   1       121,250
2/25/98      10 Mountainview Road                     Upper Saddle River, Bergen County, NJ             1       192,000
3/12/98      1250 Capital of Texas Highway South      Austin, Travis County, TX                         1       270,703
3/27/98      Prudential Business Campus(c)            Parsippany, Morris County, NJ                     5       703,451
3/27/98      Pacifica Portfolio- Phase I(d)(e)        Denver & Colorado Springs, CO                    10       620,017
3/30/98      Morris County Financial Center           Parsippany, Morris County, NJ                     2       301,940
5/13/98      3600 South Yosemite                      Denver, Denver County, CO                         1       133,743
5/22/98      500 College Road East(f)                 Princeton, Mercer County, NJ                      1       158,235
6/01/98      1709 New York Ave./1400 L Street N.W.    Washington, D.C.                                  2       325,000
6/03/98      400 South Colorado Boulevard             Denver, Denver County, CO                         1       125,415
6/08/98      Pacifica Portfolio--Phase II(d)(e)(g)    Denver & Colorado Springs, CO                     6       514,427
7/16/98      4200 Parliament Drive(h)                 Lanham, Prince George's County, MD                1       122,000
9/10/98      40 Richards Avenue(d)                    Norwalk, Fairfield County, CT                     1       145,487
9/15/98      Seven Skyline Drive(i)                   Hawthorne, Westchester County, NY                 1       109,000
                                                                                                       --
                                                                                                            ------------
  TOTAL OFFICE PROPERTY ACQUISITIONS:                                                                  34     3,842,668
                                                                                                       --
                                                                                                            ------------
OFFICE/FLEX
- -----------
1/30/98      McGarvey Portfolio(j)                    Moorestown, Burlington County, NJ                17       748,660
7/14/98      1510 Lancer Road(k)                      Moorestown, Burlington County, NJ                 1        88,000
                                                                                                       --
                                                                                                            ------------
  TOTAL OFFICE/FLEX PROPERTY ACQUISITIONS:                                                             18       836,660
                                                                                                       --
                                                                                                            ------------
TOTAL OPERATING PROPERTY ACQUISITIONS:                                                                 52     4,679,328
                                                                                                       --
                                                                                                       --
                                                                                                            ------------
                                                                                                            ------------
 
<CAPTION>
             INVESTMENT BY
ACQUISITION    OPERATING
DATE          PARTNERSHIP
- -----------  --------------
<S>          <C>
             (IN THOUSANDS)
OFFICE
- -----------
2/05/98        $   20,125
2/25/98            24,754
3/12/98            37,266
3/27/98           130,437
3/27/98            74,966
3/30/98            52,763
5/13/98            13,555
5/22/98            21,334
6/01/98            90,385
6/03/98            12,147
6/08/98            85,910
7/16/98            15,807
9/10/98            19,587
9/15/98            13,379
 
             --------------
  TOTAL OFF    $  612,415
 
             --------------
OFFICE/FLEX
- -----------
1/30/98        $   47,526
7/14/98             3,700
 
             --------------
  TOTAL OFF    $   51,226
 
             --------------
TOTAL OPERA    $  663,641
 
             --------------
             --------------
</TABLE>
 
PROPERTIES PLACED IN SERVICE
 
    The Operating Partnership placed in service the following properties through
the completion of development or redevelopment during the year ended December
31, 1998:
<TABLE>
<CAPTION>
DATE PLACED                                                                                        # OF
IN SERVICE                 PROPERTY NAME                              LOCATION                    BLDGS.     SQUARE FEET
- ------------  ---------------------------------------  ---------------------------------------  -----------  ------------
<S>           <C>                                      <C>                                      <C>          <C>
OFFICE
- ------------
1/15/98       224 Strawbridge Drive                    Moorestown, Burlington County, NJ                 1        74,000
8/01/98       228 Strawbridge Drive                    Moorestown, Burlington County, NJ                 1        74,000
                                                                                                        --
                                                                                                             ------------
  TOTAL OFFICE PROPERTIES PLACED IN SERVICE:                                                             2       148,000
                                                                                                        --
                                                                                                             ------------
OFFICE/FLEX
- ------------
6/08/98       Two Center Court                         Totowa, Passaic County, NJ                        1        30,600
10/23/98      650 West Avenue                          Stamford, Fairfield County, CT                    1        40,000
                                                                                                        --
                                                                                                             ------------
  TOTAL OFFICE/FLEX PROPERTIES PLACED IN SERVICE:                                                        2        70,600
                                                                                                        --
                                                                                                             ------------
TOTAL PROPERTIES PLACED IN SERVICE:                                                                      4       218,600
                                                                                                        --
                                                                                                        --
                                                                                                             ------------
                                                                                                             ------------
 
<CAPTION>
              INVESTMENT BY
DATE PLACED     OPERATING
IN SERVICE    PARTNERSHIP(A)
- ------------  --------------
<S>           <C>
              (IN THOUSANDS)
OFFICE
- ------------
1/15/98         $    7,796
8/01/98              7,986
 
              --------------
  TOTAL OFFI    $   15,782
 
              --------------
OFFICE/FLEX
- ------------
6/08/98         $    2,231
10/23/98             4,952
 
              --------------
  TOTAL OFFI    $    7,183
 
              --------------
TOTAL PROPER    $   22,965
 
              --------------
              --------------
</TABLE>
 
- ------------------------------
 
See footnotes to this schedule on subsequent page.
 
                                       8
<PAGE>
- ------------------------------
 
Footnotes to schedules on previous page:
 
(a) Unless otherwise noted, transactions were funded by the Operating
    Partnership with funds primarily made available through draws on the
    Operating Partnership's credit facilities.
 
(b) The acquisition was funded with cash as well as the assumption of mortgage
    debt (estimated fair value of approximately $12,104, with annual effective
    interest rate of 6.52 percent.)
 
(c) The acquisition was funded primarily from proceeds received from the sale of
    2,705,628 shares of common stock. Also included in the acquisition, but
    excluded from this schedule, is (i) Nine Campus Drive in which the Operating
    Partnership has a 50 percent interest through an unconsolidated joint
    venture (see "Investments in Unconsolidated Joint Ventures"), and (ii)
    developable land adjacent to the acquired portfolio (see "Redevelopment
    Properties/Developable Land Acquisitions.")
 
(d) The acquisition was funded with cash and the issuance of Units to the seller
    (see Note 9 to the Financial Statements).
 
(e) The Operating Partnership may be required to pay additional consideration
    due to earn-out provisions in the agreement. The Operating Partnership is
    under contract to acquire two remaining office buildings, encompassing
    95,360 square feet (for an aggregate price of approximately $12,300).
 
(f) The property was acquired subject to a ground lease, which is prepaid
    through 2031, and has two 10-year renewal options, at rent levels as defined
    in the lease agreement.
 
(g) Also included in the acquisition, but excluded from this schedule, is
    developable land adjacent to the acquired portfolio (see "Redevelopment
    Properties/Developable Land Acquisitions.")
 
(h) Includes land adjacent to the operating property, which may be sub-divided
    for future development.
 
(i) The property was acquired through the exercise of a purchase option obtained
    in the RM Transaction. The acquisition was funded with cash, net of the
    repayment by the seller of the remaining balance of the RM Note Receivable
    (see Note 7 to the Financial Statements).
 
(j) The acquisition was funded with cash as well as the assumption of mortgage
    debt (aggregate estimated fair value of approximately $8,354, with weighted
    average annual effective interest rate of 6.24 percent.) The Operating
    Partnership is under contract to acquire an additional four office/flex
    properties and has a right of first refusal to acquire six additional
    office/flex properties.
 
(k) The property was acquired through the exercise of a purchase option obtained
    in the acquisition of the McGarvey portfolio in January 1998.
 
REDEVELOPMENT PROPERTIES/DEVELOPABLE LAND ACQUISITIONS
 
    On January 23, 1998, the Operating Partnership acquired 10 acres of vacant
land in the Stamford Executive Park, located in Stamford, Fairfield County,
Connecticut for approximately $1.3 million, funded from the Operating
Partnership's cash reserves. In October 1998, the Operating Partnership
completed and placed in service a 40,000 square-foot office/flex property on the
acquired land (see "Properties Placed in Service.")
 
    On February 2, 1998, the Operating Partnership acquired 2115 Linwood Avenue,
a 68,000 square-foot vacant office building located in Fort Lee, Bergen County,
New Jersey. The building was acquired for approximately $5.2 million, which was
made available from drawing on one of the Operating Partnership's credit
facilities. The Operating Partnership is currently redeveloping the property for
future lease-up and operation.
 
    On March 27, 1998, as part of the purchase of the Prudential Business Campus
(see "Operating Property Acquisitions"), the Operating Partnership acquired
approximately 95 acres of vacant land adjacent to the operating properties for
approximately $27.5 million.
 
    On June 8, 1998, as part of the Pacifica portfolio-phase II acquisition (see
"Operating Property Acquisitions"), the Operating Partnership acquired vacant
land adjacent to the operating properties for approximately $2.0 million.
 
                                       9
<PAGE>
    On September 4, 1998, the Operating Partnership acquired approximately 128
acres of vacant land located at the Horizon Center Business Park, Hamilton
Township, Mercer County, New Jersey, through the exercise of a purchase option
obtained in the Operating Partnership's acquisition of the Horizon Center
Business Park in November 1995. The land was acquired for approximately $1.7
million, which was funded from the Operating Partnership's cash reserves.
 
    On November 10, 1998, the Operating Partnership acquired approximately 10.1
acres of land located at Three Vaughn Drive, Princeton, Mercer County, New
Jersey. The Operating Partnership acquired the land for approximately $2.1
million, which was funded from the Operating Partnership's cash reserves.
 
    On December 3, 1998, the Operating Partnership acquired approximately 2.7
acres of land located at 12 Skyline Drive, Hawthorne, Westchester County, New
York. The Operating Partnership acquired the land for approximately $1.5
million, which was funded from the Operating Partnership's cash reserves.
 
INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES
 
    The following is a summary of the Operating Partnership's net investment in
unconsolidated joint ventures as of December 31, 1998:
 
<TABLE>
<CAPTION>
                                                                                                     OPERATING
                                                                                                   PARTNERSHIP'S
                                                                                                        NET
UNCONSOLIDATED JOINT VENTURE                                                                         INVESTMENT
- ------------------------------------------------------------------------------------------------  ----------------
<S>                                                                                               <C>
                                                                                                   (IN THOUSANDS)
Pru-Beta 3......................................................................................     $   17,980
HPMC............................................................................................         17,578
G&G Martco......................................................................................         10,964
American Financial Exchange L.L.C...............................................................         10,983
Ramland Realty Associates L.L.C.................................................................          4,851
Ashford Loop Associates L.P.....................................................................          4,152
                                                                                                  ----------------
Total...........................................................................................     $   66,508
                                                                                                  ----------------
                                                                                                  ----------------
</TABLE>
 
    PRU-BETA 3 (NINE CAMPUS DRIVE):  On March 27, 1998, the Operating
Partnership acquired a 50 percent interest in an existing joint venture with The
Prudential Insurance Company of America ("Prudential"), known as Pru-Beta 3,
which owns and operates Nine Campus Drive, a 156,495 square-foot office
building, located in the Mack-Cali Business Campus (formerly Prudential Business
Campus) office complex in Parsippany, Morris County, New Jersey. The Operating
Partnership performs management and leasing services for the property owned by
the joint venture.
 
    HPMC (CONTINENTAL GRAND II/SUMMIT RIDGE/LAVA RIDGE):  On April 23, 1998, the
Operating Partnership entered into a joint venture agreement with HCG
Development, L.L.C. and Summit Partners I, L.L.C. to form HPMC Development
Partners, L.P. and, on July 21, 1998, entered into a second joint venture named
HPMC Lava Ridge Partners, L.P. with these same parties. HPMC Development
Partners, L.P.'s efforts have focused on two development projects, commonly
referred to as Continental Grand II and Summit Ridge. Continental Grand II is a
4.2 acre site located in El Segundo, Los Angeles County, California, acquired by
the venture upon which it has commenced construction of a 237,000 square-foot
office property. Summit Ridge is a 7.3 acre site located in San Diego, San Diego
County, California, acquired by the venture upon which it has commenced
construction of a 132,000 square-foot office/flex property.   HPMC Lava Ridge
Partners, L.P. has commenced construction of three two-story buildings
aggregating 183,200 square-feet of office space on a 12.1 acre site located in
Roseville, Placer County, California. The Operating Partnership is required to
make capital contributions to the ventures totaling up to $26.6 million,
pursuant to the partnership agreements. Among other things, the partnership
agreements provide for a preferred return on the Operating Partnership's
invested capital in each venture, in addition to 50 percent of such venture's
profit above such preferred returns, as defined in each agreement.
 
                                       10
<PAGE>
    G&G MARTCO (CONVENTION PLAZA):  On April 30, 1998, the Operating Partnership
acquired a 49.9 percent interest in an existing joint venture, known as G&G
Martco, which owns Convention Plaza, a 305,618 square-foot office building
located in San Francisco, San Francisco County, California. A portion of its
initial investment was financed through the issuance of Units (see Note 9 to the
Financial Statements), as well as funds drawn from the Operating Partnership's
credit facilities. The Operating Partnership performs management and leasing
services for the property owned by the joint venture.
 
    AMERICAN FINANCIAL EXCHANGE L.L.C.:  On May 20, 1998, the Operating
Partnership entered into a joint venture agreement with Columbia Development
Corp. to form American Financial Exchange L.L.C. The venture was initially
formed to acquire land for future development, located on the Hudson River
waterfront in Jersey City, Hudson County, New Jersey, adjacent to the Operating
Partnership's Harborside property. The Operating Partnership holds a 50 percent
interest in the joint venture. Among other things, the partnership agreement
provides for a preferred return on the Operating Partnership's invested capital
in the venture, in addition to the Operating Partnership's proportionate share
of the venture's profit, as defined in the agreement. The joint venture has
acquired land on which it has constructed a parking facility, which is currently
leased to a parking operator under a 10-year agreement. Such parking facility
serves a ferry service between the Operating Partnership's Harborside Financial
Center and Manhattan.
 
    RAMLAND REALTY ASSOCIATES L.L.C. (ONE RAMLAND ROAD):  On August 20, 1998,
the Operating Partnership entered into a joint venture agreement with S.B. New
York Realty Corp. to form Ramland Realty Associates L.L.C. The venture was
formed to own, manage and operate One Ramland Road, a 232,000 square-foot
office/flex building plus adjacent developable land, located in Orangeburg,
Rockland County, New York. The office/flex building is being redeveloped for
future lease-up and operation. The Operating Partnership holds a 50 percent
interest in the joint venture.
 
    ASHFORD LOOP ASSOCIATES L.P. (1001 SOUTH DAIRY ASHFORD/2100 WEST LOOP
SOUTH):  On September 18, 1998, the Operating Partnership entered into a joint
venture agreement with Prudential to form Ashford Loop Associates L.P. The
venture was formed to own, manage and operate 1001 South Dairy Ashford, a
130,000 square-foot office building acquired on September 18, 1998 and 2100 West
Loop South, a 168,000 square-foot office building acquired on November 25, 1998,
both located in Houston, Harris County, Texas. The Operating Partnership holds a
20 percent interest in the joint venture. The joint venture may be required to
pay additional consideration due to earn-out provisions in the acquisition
contracts. The Operating Partnership performs management and leasing services
for the properties owned by the joint venture.
 
FINANCING ACTIVITY
 
    During 1998, the Corporation issued approximately 8.0 million shares in
several offerings and sales of its common stock (at a weighted average price of
$37.38 per share) raising aggregate net proceeds of approximately $288.4
million. Concurrent with these offerings and sales, the Corporation purchased
from the Operating Partnership approximately 8.0 million Units, for
approximately $288.4 million. Additionally, during 1998, in conjunction with the
funding of several of its property acquisitions as well as redemption of certain
of the contingent units issued in the Mack Transaction, the Operating
Partnership issued a total of approximately 3.1 million Units and 19,694
preferred operating partnership units (convertible into 568,369 Units), with a
total value of approximately $126.3 million at time of issuance.
 
    In October 1998, the Operating Partnership entered into a forward treasury
rate lock agreement with a commercial bank. The agreement locked an interest
rate of 4.089 percent per annum for the three-year U.S. Treasury Note effective
November 4, 1999, on a notional amount of $50.0 million. The agreement will be
used to fix the Index Rate on $50.0 million of the Harborside mortgages, for
which the Operating Partnership's interest rate re-sets for three years
beginning November 4, 1999 to the interpolated three-year U.S. Treasury Note
plus 110 basis points (see Note 9 to the Financial Statements--"Harborside
Mortgages").
 
                                       11
<PAGE>
    In August 1998, the Board of Directors of the Corporation authorized a share
repurchase program under which the Corporation was permitted to purchase up to
$100.0 million of the Corporation's outstanding Common Stock. Purchases could be
made from time to time in open market transactions at prevailing prices or
through privately-negotiated transactions. Subsequently, the Corporation
purchased in the open market, for constructive retirement, 854,700 shares of its
outstanding Common Stock for an aggregate cost of approximately $25.1 million.
Concurrent with these purchases, the Corporation sold to the Operating
Partnership 854,700 Units for approximately $25.1 million.
 
    On April 30,1998, the Operating Partnership retired a $200 million term loan
which it obtained from Prudential Securities Credit Corp. on December 10, 1997.
Such loan had a one-year term and bore interest at 110 basis points over
one-month LIBOR.
 
    Also on April 30, 1998, The Operating Partnership obtained a loan in the
amount of $150 million from The Prudential Insurance Company of America. Such
loan has a seven year term and bears interest at an effective rate of 7.1
percent.
 
    On April 17, 1998, the Operating Partnership repaid in full and terminated
the Original Unsecured Facility and obtained a new unsecured revolving credit
facility (the "1998 Unsecured Facility") in the amount of $870.0 million from a
group of 26 lender banks. In July 1998, the 1998 Unsecured Facility was expanded
to $900.0 million with the addition of two new lender banks into the facility,
bringing the total number of participants to 28. In December 1998, the 1998
Unsecured Facility was further expanded to $1.0 billion. The 1998 Unsecured
Facility has a three-year term and bore interest at 110 basis points over LIBOR.
In November 1998, with the Operating Partnership's achievement of investment
grade unsecured debt ratings, the interest rate was reduced to 90 basis points
over LIBOR.
 
    The Operating Partnership has three investment grade credit ratings. Duff &
Phelps Credit Rating Co. ("DCR") and Standard & Poors Rating Services ("S&P")
have each assigned their BBB rating to prospective senior unsecured debt
offerings of the Operating Partnership. DCR and S&P have also assigned their
BBB- rating to prospective preferred stock offerings of the Company. Moody's
Investors Service has assigned its Baa3 rating to prospective senior unsecured
debt of the Operating Partnership and its Ba1 rating to prospective preferred
stock offerings of the Company.
 
                                       12
<PAGE>
RISK FACTORS
 
    Our results from operations and ability to pay distributions on our equity
and debt service on our indebtedness may be affected by the risk factors set
forth below. All investors should consider the following risk factors before
deciding to purchase securities of the Operating Partnership. The Operating
Partnership refers to itself as "we" or "our" in the following risk factors.
 
WE ARE DEPENDENT UPON THE ECONOMICS OF THE NORTHEASTERN OFFICE MARKETS.
 
    A majority of our revenues are derived from our properties located in the
Northeast, particularly in New Jersey, New York, Pennsylvania and Connecticut.
Adverse economic developments in these states could adversely impact the
operations of our properties and, therefore, our profitability. Because our
portfolio consists primarily of office and office/flex buildings (as compared to
a more diversified real estate portfolio), a decline in the economy and/or a
decline in the demand for office space may adversely affect our ability to make
distributions or payments to our investors.
 
OUR PERFORMANCE IS SUBJECT TO RISKS ASSOCIATED WITH THE REAL ESTATE INDUSTRY.
 
    GENERAL:  Our ability to make distributions or payments to our investors
depends on the ability of our properties to generate funds in excess of
operating expenses (including scheduled principal payments on debt and capital
expenditure requirements). Events or conditions that are beyond our control may
adversely affect our operations and the value of our properties. Such events or
conditions could include:
 
    - changes in the general economic climate;
 
    - changes in local conditions such as oversupply of office space or a
      reduction in demand for office space;
 
    - decreased attractiveness of our properties to potential tenants;
 
    - competition from other office and office/flex buildings;
 
    - our inability to provide adequate maintenance;
 
    - increased operating costs, including insurance premiums and real estate
      taxes, due to inflation and other factors which may not necessarily be
      offset by increased rents;
 
    - changes in laws and regulations (including tax, environmental and housing
      laws and regulations) and agency or court interpretations of such laws and
      regulations and the related costs of compliance;
 
    - changes in interest rate levels and the availability of financing;
 
    - the inability of a significant number of tenants to pay rent;
 
    - our inability to rent office space on favorable terms; and
 
    - civil unrest, earthquakes and other natural disasters or acts of God that
      may result in uninsured losses.
 
    FINANCIALLY DISTRESSED TENANTS MAY BE UNABLE TO PAY RENT:  If a tenant
defaults, we may experience delays and incur substantial costs in enforcing our
rights as landlord and protecting our investments. If a tenant files for
bankruptcy, a potential court judgment rejecting and terminating such tenant's
lease could adversely affect our ability to make distributions or payments to
our investors.
 
    ILLIQUIDITY OF REAL ESTATE LIMITS OUR ABILITY TO ACT QUICKLY:  Real estate
investments are relatively illiquid. Such illiquidity may limit our ability to
react quickly in response to changes in economic and other conditions. If we
want to sell an investment, we might not be able to dispose of that investment
in the time period we desire, and the sales price of that investment might not
recoup or exceed the amount of our
 
                                       13
<PAGE>
investment. The prohibition in the Internal Revenue Code of 1986, as amended,
and related regulations on a real estate investment trust holding property for
sale also may restrict our ability to sell property. In addition, we acquired a
significant number of our properties from individuals to whom we issued limited
partnership units as part of the purchase price. In connection with the
acquisition of these properties, in order to preserve such individual's tax
deferral, we contractually agreed not to sell or otherwise transfer the
properties for a specified period of time, subject to certain exceptions. The
above limitations on our ability to sell our investments could adversely affect
our ability to make distributions or payments to our investors.
 
    AMERICANS WITH DISABILITIES ACT COMPLIANCE COULD BE COSTLY:  Under the
Americans with Disabilities Act of 1990, all public accommodations and
commercial facilities must meet certain federal requirements related to access
and use by disabled persons. Compliance with the ADA requirements could involve
removal of structural barriers from certain disabled persons' entrances. Other
federal, state and local laws may require modifications to or restrict further
renovations of our properties with respect to such accesses. Although we believe
that our properties are substantially in compliance with present requirements,
noncompliance with the ADA or related laws or regulations could result in the
United States government imposing fines or private litigants being awarded
damages against us. Such costs may adversely affect our ability to make
distributions or payments to our investors.
 
    ENVIRONMENTAL PROBLEMS ARE POSSIBLE AND MAY BE COSTLY:  Various federal,
state and local laws and regulations subject property owners or operators to
liability for the costs of removal or remediation of certain hazardous or toxic
substances located on or in the property. These laws often impose liability
without regard to whether the owner or operator was responsible for or even knew
of the presence of such substances. The presence of or failure to properly
remediate hazardous or toxic substances may adversely affect our ability to
rent, sell or borrow against contaminated property. Various laws and regulations
also impose liability on persons who arrange for the disposal or treatment of
hazardous or toxic substances at another location for the costs of removal or
remediation of such substances at the disposal or treatment facility. These laws
often impose liability whether or not the person arranging for such disposal
ever owned or operated the disposal facility. Certain other environmental laws
and regulations impose liability on owners or operators of property for injuries
relating to the release of asbestos-containing materials into the air. As owners
and operators of property and as potential arrangers for hazardous substance
disposal, we may be liable under such laws and regulations for removal or
remediation costs, governmental penalties, property damage, personal injuries
and related expenses. Payment of such costs and expenses could adversely affect
our ability to make distributions or payments to our investors.
 
    COMPETITION FOR ACQUISITIONS MAY RESULT IN INCREASED PRICES FOR
PROPERTIES:  We plan to acquire additional properties in New Jersey, New York
and Pennsylvania and in the Northeast generally. We may be competing for
investment opportunities with entities that have greater financial resources and
more experienced managers. Several office building developers and real estate
companies may compete with us in seeking properties for acquisition, land for
development and prospective tenants. Such competition may adversely affect our
ability to make distributions or payments to our investors by:
 
    - reducing the number of suitable investment opportunities offered to us;
 
    - increasing the bargaining power of property owners;
 
    - interfering with our ability to attract and retain tenants;
 
    - increasing vacancies which lowers market rental rates and limits our
      ability to negotiate rental rates; and/or
 
    - adversely affecting our ability to minimize expenses of operation.
 
                                       14
<PAGE>
    DEVELOPMENT OF REAL ESTATE COULD BE COSTLY:  As part of our operating
strategy, we may acquire land for development under certain conditions. Included
among the risks of the real estate development business are the following, which
may adversely affect our ability to make distributions or payments to our
investors:
 
    - financing for development projects may not be available on favorable
      terms;
 
    - long-term financing may not be available upon completion of construction;
      and
 
    - failure to complete construction on schedule or within budget may increase
      debt service expense and construction costs.
 
DEBT FINANCING COULD ADVERSELY AFFECT OUR ECONOMIC PERFORMANCE
 
    SCHEDULED DEBT PAYMENTS AND REFINANCING COULD ADVERSELY AFFECT OUR FINANCIAL
CONDITION:  We are subject to the risks normally associated with debt financing.
These risks, including the following, may adversely affect our ability to make
distributions or payments to our investors:
 
    - our cash flow may be insufficient to meet required payments of principal
      and interest;
 
    - payments of principal and interest on borrowings may leave us with
      insufficient cash resources to pay operating expenses;
 
    - we may not be able to refinance indebtedness on our properties at
      maturity; and
 
    - if refinanced, the terms of refinancing may not be as favorable as the
      original terms of the related indebtedness.
 
    As of December 31, 1998, we had outstanding an aggregate of approximately
$743.2 million of mortgage indebtedness (in addition to borrowings under our
revolving credit facilities). As of December 31, 1998, we had outstanding
borrowings of $671.6 million under our revolving credit facilities (with
aggregate borrowing capacity of $1.1 billion). The outstanding borrowings were
comprised of $671.6 million from our unsecured $1.0 billion credit facility,
with no outstanding borrowings on our $100.0 million credit facility. We may
have to refinance the principal due on our indebtedness at maturity, and we may
not be able to refinance any indebtedness we incur in the future.
 
    If we are unable to refinance our indebtedness on acceptable terms, or at
all, events or conditions that may adversely affect our ability to make
distributions or payments to our investors include the following:
 
    - we may need to dispose of one or more of our properties upon
      disadvantageous terms;
 
    - prevailing interest rates or other factors at the time of refinancing
      could increase interest rates and, therefore, our interest expense;
 
    - if we mortgage property to secure payment of indebtedness and are unable
      to meet mortgage payments, the mortgagee could foreclose upon such
      property or appoint a receiver to receive an assignment of our rents and
      leases; and
 
    - foreclosures upon mortgaged property could create taxable income without
      accompanying cash proceeds and, therefore, hinder our ability to meet the
      real estate investment trust distribution requirements of the Internal
      Revenue Code.
 
    RISING INTEREST RATES MAY ADVERSELY AFFECT OUR CASH FLOW:  Outstanding
borrowings under our revolving credit facilities of approximately $671.6 million
(as of December 31, 1998) and approximately $80.2 million (as of December 31,
1998) of our mortgage indebtedness bear interest at variable rates. We may incur
additional indebtedness in the future that also bears interest at variable
rates. Variable rate debt creates higher debt service requirements if market
interest rates increase. Higher debt service requirements could adversely affect
our ability to make distributions or payments to our investors or cause us to
default under certain debt covenants.
 
                                       15
<PAGE>
    OUR DEGREE OF LEVERAGE COULD ADVERSELY AFFECT OUR CASH FLOW:  We fund
acquisition opportunities and development partially through short-term
borrowings (including our revolving credit facilities), as well as out of
undistributed cash. We expect to refinance projects purchased with short-term
debt either with long-term indebtedness or equity financing depending upon the
economic conditions at the time of refinancing. The Board of Directors of
Mack-Cali Realty Corporation, our general partner, has a general policy of
limiting the ratio of our indebtedness to total market capitalization (total
debt as a percentage of the total market value of the issued and outstanding
shares of Mack-Cali Realty Corporation's common stock, including interests
redeemable therefore, plus total debt) of 50 percent or less, although there is
no limit in Mack-Cali Realty Corporation's or our organizational documents on
the amount of indebtedness that we may incur. However, we have entered into
certain financial agreements which contain financial and operating covenants
that limit our ability under certain circumstances to incur additional secured
and unsecured indebtedness. The Board of Directors could alter or eliminate its
current policy on borrowing at any time at its discretion. If this policy were
changed, we could become more highly leveraged, resulting in an increase in debt
service that could adversely affect our cash flow and our ability to make
distributions or payments to our investors and could cause an increased risk of
default on our obligations.
 
    ANY UNSECURED INDEBTEDNESS THAT WE MAY ISSUE IS EFFECTIVELY SUBORDINATED TO
OUR SECURED INDEBTEDNESS AND INDEBTEDNESS OF OUR SUBSIDIARIES: Any unsecured
indebtedness that we may issue will be effectively subordinated to any of our
secured indebtedness to the extent of the value of the assets securing such
indebtedness and indebtedness of our subsidiaries. As of December 31, 1998, our
total secured indebtedness (including secured indebtedness issued by our
subsidiaries) was approximately $743.2 million. Consequently, in the event we
are involved in a bankruptcy, liquidation, dissolution, reorganization or
similar proceeding, the holders of any secured indebtedness will be entitled to
proceed against the collateral that secures any such secured indebtedness, and
such collateral will not be available for satisfaction of any amounts owned
under our unsecured indebtedness, including the notes. In addition, in the event
of a bankruptcy, liquidation, dissolution, reorganization or similar proceeding
of our subsidiaries, holders of indebtedness of our subsidiaries (whether
secured or unsecured) and trade creditors of our subsidiaries generally will be
entitled to payment of their claims from the assets of those subsidiaries before
any assets are made available for distribution to us.
 
WE ARE DEPENDENT ON OUR KEY PERSONNEL WHOSE CONTINUED SERVICE IS NOT GUARANTEED.
 
    We are dependent upon our executive officers for strategic business
direction and real estate experience. While we believe that we could find
replacements for these key personnel, loss of their services could adversely
affect our operations. We have entered into an employment agreement (including
non-competition provisions) which provides for a continuous five-year employment
term with each of Thomas A. Rizk, Mitchell E. Hersh, Brant B. Cali, John R.
Cali, Timothy M. Jones, Barry Lefkowitz and Roger W. Thomas. We do not have key
man life insurance for our executive officers.
 
A YEAR 2000 FAILURE COULD DISRUPT OUR OPERATIONS.
 
    The year 2000 problem is the result of computer programs and embedded chips
using a two-digit format, as opposed to four digits, to indicate the year. Such
computer systems may be unable to interpret dates beyond the year 1999, which
could cause a system failure or other computer errors, leading to disruptions in
operations. The failure to correct a material year 2000 problem could result in
an interruption in, or a failure of, certain normal business activities or
cooperations. Such failures could materially and adversely affect our results of
operations, liquidity and financial condition. Due to the general uncertainty
inherent in the year 2000 problem, resulting in part from the uncertainty of the
year 2000 readiness of third-party vendors and tenants, we are unable to
determine at this time whether the consequences of year 2000 failures will have
a material impact on our results of operations, liquidity or financial
condition. See "Item 7--Management's Discussion and Analysis of Financial
Condition and Results of Operations."
 
                                       16
<PAGE>
CONSEQUENCES OF FAILURE TO QUALIFY AS A REAL ESTATE INVESTMENT TRUST COULD
ADVERSELY AFFECT OUR FINANCIAL CONDITION.
 
    FAILURE TO MAINTAIN OWNERSHIP LIMITS COULD CAUSE OUR GENERAL PARTNER TO LOSE
ITS QUALIFICATION AS A REAL ESTATE INVESTMENT TRUST:  In order for Mack-Cali
Realty Corporation to maintain its qualification as a real estate investment
trust, not more than 50 percent in value of its outstanding stock may be
actually and/or constructively owned by five or fewer individuals (as defined in
the Internal Revenue Code to include certain entities). Mack-Cali Realty
Corporation has limited ownership of the outstanding shares of its common stock
by any single stockholder to 9.8 percent of the outstanding shares of its common
stock. The Board of Directors of Mack-Cali Realty Corporation could waive this
restriction if it was satisfied, based upon the advice of tax counsel or
otherwise, that such action would be in the best interests of Mack-Cali Realty
Corporation and would not affect its qualifications as a real estate investment
trust. Common stock of Mack-Cali Realty Corporation acquired or transferred in
breach of the limitation may be redeemed by Mack-Cali Realty Corporation for the
lesser of the price paid and the average closing price for the 10 trading days
immediately preceding redemption or sold at the direction of Mack-Cali Realty
Corporation. Mack-Cali Realty Corporation may elect to redeem such shares of
common stock for limited partnership units, which are nontransferable except in
very limited circumstances. Any transfer of shares of common stock which, as a
result of such transfer, causes Mack-Cali Realty Corporation to be in violation
of any ownership limit will be deemed void. Although Mack-Cali Realty
Corporation currently intends to continue to operate in a manner which will
enable Mack-Cali Realty Corporation to continue to qualify as a real estate
investment trust, it is possible that future economic, market, legal, tax or
other considerations may cause Mack-Cali Realty Corporation's Board of Directors
to revoke the election for Mack-Cali Realty Corporation to qualify as a real
estate investment trust. Under Mack-Cali Realty Corporation's organizational
documents, its Board of Directors can make such revocation without the consent
of Mack-Cali Realty Corporation's stockholders.
 
    In addition, the consent of the holders of at least 85 percent of our
partnership units is required: (1) to merge (or permit the merger of) us with
another unrelated person, pursuant to a transaction in which we are not the
surviving entity; (2) to dissolve, liquidate or wind us up; or (3) to convey or
otherwise transfer all or substantially all of our assets. Mack-Cali Realty
Corporation, as our general partner, owns approximately 77.8 percent of our
outstanding partnership units (assuming conversion of all preferred limited
partnership units).
 
    TAX LIABILITIES AS A CONSEQUENCE OF FAILURE TO QUALIFY AS A REAL ESTATE
INVESTMENT TRUST:  Mack-Cali Realty Corporation has elected to be treated and
has operated so as to qualify as a real estate investment trust for federal
income tax purposes since its taxable year ended December 31, 1994. Although
Mack-Cali Realty Corporation believes it will continue to operate in such
manner, we cannot guarantee that Mack-Cali Realty Corporation will do so.
Qualification as a real estate investment trust involves the satisfaction of
various requirements (some on an annual and quarterly basis) established under
highly technical and complex tax provisions of the Internal Revenue Code.
Because few judicial or administrative interpretations of such provisions exist
and qualification determinations are fact sensitive, we cannot assure you that
Mack-Cali Realty Corporation will qualify as a real estate investment trust for
any taxable year.
 
    If Mack-Cali Realty Corporation fails to qualify as a real estate investment
trust in any taxable year, it will be subject to the following:
 
    - it will not be allowed a deduction for dividends to shareholders;
 
    - it will be subject to federal income tax at regular corporate rates,
      including any alternative minimum tax, if applicable; and
 
    - unless it is entitled to relief under certain statutory provisions, it
      will not be permitted to qualify as a real estate investment trust for the
      four taxable years following the year during which it was disqualified.
 
                                       17
<PAGE>
    A loss of Mack-Cali Realty Corporation's status as a real estate investment
trust could have an adverse effect on us. Failure to qualify as a real estate
investment trust also would eliminate the requirement that Mack-Cali Realty
Corporation pay dividends to its shareholders.
 
    OTHER TAX LIABILITIES:  Even if Mack-Cali Realty Corporation qualifies as a
real estate investment trust, it is subject to certain federal, state and local
taxes on our income and property and, in some circumstances, certain other state
taxes. Our net income from third party management and tenant improvements, if
any, also may be subject to federal income tax.
 
    RISK OF CHANGES IN THE TAX LAW APPLICABLE TO REAL ESTATE INVESTMENT
TRUSTS:  Since the Internal Revenue Service, the United States Treasury
Department and Congress frequently review federal income tax legislation, we
cannot predict whether, when or to what extent new federal tax laws,
regulations, interpretations or rulings will be adopted. Any of such legislative
action may prospectively or retroactively modify our and Mack-Cali Realty
Corporation's tax treatment and, therefore, may adversely affect taxation of us,
Mack-Cali Realty Corporation and/or investors.
 
THERE MAY BE NO PUBLIC MARKET FOR OUR UNSECURED INDEBTEDNESS.
 
    We may issue debt securities for which there is no active trading market. If
traded after their initial issuance, such securities may trade at a discount
from their initial offering price, depending upon prevailing interest rates, the
market for similar securities, our financial condition and performance and other
factors beyond our control, including general economic conditions. We may not
list our debt securities on any securities exchange.
 
DISCLOSURE REGARDING FORWARD-LOOKING STATEMENTS.
 
    The Operating Partnership considers portions of this information to be
forward-looking statements. Although the Operating Partnership believes that the
expectations reflected in such forward-looking statements are based upon
reasonable assumptions, it can give no assurance that its expectations will be
achieved.
 
                                       18
<PAGE>
    ITEM 2.   PROPERTIES
 
    PROPERTY LIST
 
    As of December 31, 1998, the Operating Partnership's Properties consisted of
237 in-service office, office/flex and industrial/warehouse properties, ranging
from one to 19 stories, as well as two multi-family residential properties, two
stand-alone retail properties, two land leases and a redevelopment office
property. The Properties are located primarily in the Northeast. The Properties
are easily accessible from major thoroughfares and are in close proximity to
numerous amenities. The Properties contain a total of approximately 26.8 million
square feet, with the individual properties ranging from approximately 6,600 to
761,200 square feet. The Properties, managed by on-site employees, generally
have attractively landscaped sites, atriums and covered parking in addition to
quality design and construction. The Operating Partnership's tenants include
many service sector employers, including a large number of professional firms
and national and international businesses. The Operating Partnership believes
that all of its properties are well-maintained and do not require significant
capital improvements.
 
                                       19
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)          %            ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
OFFICE PROPERTIES
 
ATLANTIC COUNTY, NEW JERSEY
 
EGG HARBOR
100 Decadon Drive......................       1987      40,422        100.0          770        770           0.18           19.05
200 Decadon Drive......................       1991      39,922         99.8          501        477           0.12           12.57
 
BERGEN COUNTY, NEW JERSEY
 
FAIR LAWN
17-17 Route 208 North..................       1987     143,000         96.0        3,391      3,327           0.80           24.70
 
FORT LEE
One Bridge Plaza.......................       1981     200,000         98.2        4,686      4,539           1.11           23.86
 
LITTLE FERRY
200 Riser Road.........................       1974     286,628        100.0        1,858      1,858           0.44            6.48
 
MONTVALE
95 Chestnut Ridge Road.................       1975      47,700        100.0          565        565           0.13           11.84
135 Chestnut Ridge Road................       1981      66,150        100.0        1,217      1,217           0.29           18.40
 
PARAMUS
140 Ridgewood Avenue...................       1981     239,680        100.0        5,141      5,128           1.22           21.45
15 East Midland Avenue.................       1988     259,823        100.0        6,749      6,749           1.60           25.98
461 From Road..........................       1988     253,554         99.8        5,993      5,991           1.42           23.68
650 From Road..........................       1978     348,510         96.7        7,538      7,535           1.79           22.37
61 South Paramus Avenue................       1985     269,191         99.0        5,596      5,556           1.33           21.00
 
ROCHELLE PARK
120 Passaic Street.....................       1972      52,000        100.0          575        575           0.14           11.06
365 West Passaic Street................       1976     212,578         84.0        3,463      3,428           0.82           19.39
 
SADDLE RIVER
1 Lake Street..........................       1994     474,801        100.0        7,465      7,465           1.77           15.72
 
UPPER SADDLE RIVER
10 Mountainview Road(7)................       1986     192,000        100.0        3,053      2,952           0.72           18.72
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
OFFICE PROPERTIES
ATLANTIC COUNTY, NEW JERSEY
EGG HARBOR
100 Decadon Drive......................       19.05   Computer Sciences Corp. (80%), United States of America--GSA (20%)
 
200 Decadon Drive......................       11.97   Computer Sciences Corp. (45%), Advanced Casino Corp. (33%), Dimensions
 
                                                        International Inc. (15%)
 
BERGEN COUNTY, NEW JERSEY
FAIR LAWN
17-17 Route 208 North..................       24.24   Lonza, Inc. (63%), Boron-Lepore Assoc., Inc. (16%)
 
FORT LEE
One Bridge Plaza.......................       23.11   PricewaterhouseCoopers LLP (26%), Broadview Associates (16%), Bozell
 
                                                        Worldwide, Inc. (16%)
 
LITTLE FERRY
200 Riser Road.........................        6.48   Ford Motor Company (34%), Dassault Falcon Jet Corp. (33%), Sanyo Fisher
 
                                                        Service Corp. (33%)
 
MONTVALE
95 Chestnut Ridge Road.................       11.84   Roussel-UCLAF Holdings Corp. (100%)
 
135 Chestnut Ridge Road................       18.40   Alliance Funding Company (100%)
 
PARAMUS
140 Ridgewood Avenue...................       21.40   AT&T Wireless Services (46%), Smith Barney Shearson Inc. (19%)
 
15 East Midland Avenue.................       25.98   AT&T Wireless Services (98%)
 
461 From Road..........................       23.68   Toys 'R' Us--NJ Inc. (96%)
 
650 From Road..........................       22.36   Western Union Financial Services, Inc. (38%)
 
61 South Paramus Avenue................       20.85   Dun & Bradstreet Software Services, Inc. (11%)
 
ROCHELLE PARK
120 Passaic Street.....................       11.06   Electronic Data Systems Corp. (100%)
 
365 West Passaic Street................       19.20   United Retail Incorporated (26%), Catalina Marketing Corp. (10%),
 
                                                        Financial Telesis Inc. (10%)
 
SADDLE RIVER
1 Lake Street..........................       15.72   Prentice-Hall Inc. (100%)
 
UPPER SADDLE RIVER
10 Mountainview Road(7)................       18.10   Thomson Minwax Company (23%), Corning Life Sciences (15%), ITT Fluid
 
                                                        Technology (14%), Professional Detailing Inc. (14%), Neuromedical
 
                                                        Systems Inc. (14%), Innapharma Inc. (10%)
 
</TABLE>
 
                                       20
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)          %            ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
WOODCLIFF LAKE
400 Chestnut Ridge Road................       1982      89,200        100.0        2,120      2,120           0.50           23.77
470 Chestnut Ridge Road................       1987      52,500        100.0        1,192      1,192           0.28           22.70
530 Chestnut Ridge Road................       1986      57,204        100.0        1,166      1,166           0.28           20.38
50 Tice Boulevard......................       1984     235,000        100.0        4,372      3,732           1.04           18.60
300 Tice Boulevard.....................       1991     230,000        100.0        5,022      4,951           1.19           21.83
 
BURLINGTON COUNTY, NEW JERSEY
 
MOORESTOWN
224 Strawbridge Drive(7)...............       1984      74,000         63.4          800        734           0.19           17.05
228 Strawbridge Drive(7)...............       1984      74,000        100.0          597        459           0.14            8.07
 
ESSEX COUNTY, NEW JERSEY
 
MILLBURN
150 J.F. Kennedy Parkway...............       1980     247,476        100.0        6,572      6,565           1.56           26.56
 
ROSELAND
101 Eisenhower Parkway.................       1980     237,000         95.2        4,084      3,800           0.97           18.10
103 Eisenhower Parkway.................       1985     151,545         94.1        3,195      2,934           0.76           22.40
 
HUDSON COUNTY, NEW JERSEY
 
JERSEY CITY
95 Christopher Columbus Drive..........       1989     621,900        100.0       12,717     11,552           3.02           20.45
Harborside Financial Center Plaza I....       1983     400,000         98.8        3,264      3,264           0.77            8.26
Harborside Financial Center Plaza II...       1990     761,200        100.0       17,145     17,047           4.06           22.52
Harborside Financial Center Plaza III..       1990     725,600        100.0       16,341     16,247           3.87           22.52
 
MERCER COUNTY, NEW JERSEY
 
PRINCETON
5 Vaughn Drive.........................       1987      98,500         94.9        2,095      2,052           0.50           22.41
400 Alexander Road.....................       1987      70,550        100.0        1,270      1,081           0.30           18.00
103 Carnegie Center....................       1984      96,000        100.0        2,038      1,929           0.48           21.23
100 Overlook Center....................       1988     149,600         99.8        3,862      3,862           0.92           25.87
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
WOODCLIFF LAKE
400 Chestnut Ridge Road................       23.77   Timeplex, Inc. (100%)
 
470 Chestnut Ridge Road................       22.70   Andermatt LP (100%)
 
530 Chestnut Ridge Road................       20.38   KPMG Peat Marwick, LLP (100%)
 
50 Tice Boulevard......................       15.88   Syncsort, Inc. (22%)
 
300 Tice Boulevard.....................       21.53   Merck-Medco Managed Care LLC (20%), Xerox Corp. (14%), Chase Manhattan
 
                                                        Mortgage Corp. (12%), Comdisco, Inc. (11%), NYCE, Corp. (11%)
 
BURLINGTON COUNTY, NEW JERSEY
MOORESTOWN
224 Strawbridge Drive(7)...............       15.64   Allstate Insurance Co. (49%)
 
228 Strawbridge Drive(7)...............        6.20   Cendant Mortgage Corporation (100%)
 
ESSEX COUNTY, NEW JERSEY
MILLBURN
150 J.F. Kennedy Parkway...............       26.53   KPMG Peat Marwick, LLP (42%), Budd Larner Gross (23%), Coldwell Banker
 
                                                        Residential Real Estate (14%)
 
ROSELAND
101 Eisenhower Parkway.................       16.84   Arthur Andersen, LLP (31%), Brach, Eichler, Rosenberg (13%)
 
103 Eisenhower Parkway.................       20.57   Ravin, Sarasohn, Cook, Baumgarten (18%), Lum, Danzis, Drasco (16%),
 
                                                        Chelsea GCA Realty Corp. (15%), Salomon Smith Barney, Inc. (11%)
 
HUDSON COUNTY, NEW JERSEY
JERSEY CITY
95 Christopher Columbus Drive..........       18.58   DLJ Securities Corp. (Pershing) (72%), NTT Data Corp. (22%)
 
Harborside Financial Center Plaza I....        8.26   Bankers Trust Harborside, Inc. (96%)
 
Harborside Financial Center Plaza II...       22.39   Dow Jones Telerate Systems, Inc. (44%), Morgan Stanley Dean Witter (30%),
 
                                                        Lewco Sercurities (11%)
 
Harborside Financial Center Plaza III..       22.39   AICPA (34%), BTM Information Services, Inc. (19%)
 
MERCER COUNTY, NEW JERSEY
PRINCETON
5 Vaughn Drive.........................       21.95   U.S. Trust Co. of NJ (19%), Woodrow Wilson National Fellowship Foundation
 
                                                        (14%), Princeton Venture Research Corp. (14%), Villeroy & Boch Tableware
 
                                                        Ltd. (11%)
 
400 Alexander Road.....................       15.32   Berlitz International Inc. (100%)
 
103 Carnegie Center....................       20.09   Ronin Development Corp. (15%), R.G. Vanderweil Engineers (14%)
 
100 Overlook Center....................       25.87   Squibb-Novo Inc. (24%), Xerox Corp. (24%), IFP North America Inc. (14%)
 
</TABLE>
 
                                       21
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)          %            ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
MIDDLESEX COUNTY, NEW JERSEY
 
EAST BRUNSWICK
377 Summerhill Road....................       1977      40,000        100.0          373        373           0.09            9.33
 
PLAINSBORO
500 College Road East(7)...............       1984     158,235        100.0        2,060      2,060           0.49           21.21
 
SOUTH BRUNSWICK
3 Independence Way.....................       1983     111,300         87.3        1,913      1,912           0.45           19.69
 
WOODBRIDGE
581 Main Street........................       1991     200,000         94.0        3,078      3,043           0.73           16.37
 
MONMOUTH COUNTY, NEW JERSEY
 
NEPTUNE
3600 Route 66..........................       1989     180,000        100.0        2,411      2,411           0.57           13.39
 
WALL TOWNSHIP
1305 Campus Parkway....................       1988      23,350         92.3          402        391           0.10           18.65
1350 Campus Parkway....................       1990      79,747         97.5        1,324      1,233           0.31           17.03
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
MIDDLESEX COUNTY, NEW JERSEY
EAST BRUNSWICK
377 Summerhill Road....................        9.33   Greater New York Mutual Insurance Company (100%)
 
PLAINSBORO
500 College Road East(7)...............       21.21   Merrill Lynch Asset Mgmt (72%), Buchanan Ingersoll P.C. (17%)
 
SOUTH BRUNSWICK
3 Independence Way.....................       19.68   Merrill Lynch Pierce Fenner & Smith (72%)
 
WOODBRIDGE
581 Main Street........................       16.19   First Investors Management Company, Inc. (38%), Cast North America Ltd.
 
                                                        (11%)
 
MONMOUTH COUNTY, NEW JERSEY
NEPTUNE
3600 Route 66..........................       13.39   The United States Life Insurance Company (100%)
 
WALL TOWNSHIP
1305 Campus Parkway....................       18.14   Centennial Cellular Corp. (41%), McLaughlin, Bennett, Gelson (35%), NJ
 
                                                        Natural Energy Co. (10%)
 
1350 Campus Parkway....................       15.86   Meridan Health Realty Corp. (22%), New Jersey National Bank/Core States
 
                                                        (17%), Stephen E. Gertler Law Office (17%), Milestone Materials Inc.
 
                                                        (16%), Hospital Computer Systems Inc. (11%)
 
</TABLE>
 
                                       22
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
 
MORRIS COUNTY, NEW JERSEY
 
FLORHAM PARK
325 Columbia Parkway...................       1987     168,144        100.0        3,749      3,279           0.89           22.30
 
PARSIPPANY
1 Sylvan Way(7)........................       1989     150,557        100.0        2,427      2,381           0.58           21.24
2 Dryden Way(7)........................       1990       6,216        100.0           51         51           0.01           10.69
2 Hilton Court(7)......................       1991     181,592        100.0        4,745      4,745           1.12           34.06
5 Sylvan Way(7)........................       1989     151,383         93.0        2,576      2,576           0.61           24.11
7 Campus Drive(7)......................       1982     154,395        100.0        1,945      1,945           0.46           16.42
7 Sylvan Way(7)........................       1987     145,983        100.0        2,229      2,229           0.53           19.90
8 Campus Drive(7)......................       1987     215,265         92.8        3,495      3,491           0.83           22.81
600 Parsippany Road....................       1978      96,000        100.0        1,592      1,542           0.38           16.58
 
MORRIS PLAINS
201 Littleton Road.....................       1979      88,369        100.0        1,703      1,702           0.40           19.27
250 Johnson Road.......................       1977      75,000        100.0        1,090      1,090           0.26           14.53
 
MORRIS TOWNSHIP
340 Mt. Kemble Avenue..................       1985     387,000        100.0        5,530      5,530           1.31           14.29
412 Mt. Kemble Avenue..................       1986     475,100        100.0        6,902      6,902           1.64           14.53
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
MORRIS COUNTY, NEW JERSEY
FLORHAM PARK
325 Columbia Parkway...................       19.50   Bressler Amery & Ross (24%), Atlantic Health Systems (12%), Dun &
 
                                                        Bradstreet Inc. (12%), QWest Communications Corp. (11%)
 
PARSIPPANY
1 Sylvan Way(7)........................       20.84   Cendant Operations Inc. (99%)
 
2 Dryden Way(7)........................       10.69   Bright Horizons Childrens Center (100%)
 
2 Hilton Court(7)......................       34.06   Deloitte & Touche USA LLP (66%), Northern Telecom Inc. (16%)
 
5 Sylvan Way(7)........................       24.11   Integrated Communications (50%), Experian Information Solution (15%)
 
7 Campus Drive(7)......................       16.42   Nabisco Inc. (100%)
 
7 Sylvan Way(7)........................       19.90   Nabisco Inc. (100%)
 
8 Campus Drive(7)......................       22.78   Prudential Insurance Co. (31%), Bay Networks Inc. (27%), MCI
 
                                                        Telecommunications Corp. (18%), Ayco Company LP (13%)
 
600 Parsippany Road....................       16.06   Metropolitan Life Insurance Co. (36%), IBM Corporation (30%)
 
MORRIS PLAINS
201 Littleton Road.....................       19.26   Xerox Corp. (35%), Bozell Worldwide Inc. (34%), Willis Corroon Corp. of
 
                                                        New Jersey (20%), Chep USA (11%)
 
250 Johnson Road.......................       14.53   Electronic Data Systems Corp. (100%)
 
MORRIS TOWNSHIP
340 Mt. Kemble Avenue..................       14.29   AT&T Corp. (100%)
 
412 Mt. Kemble Avenue..................       14.53   AT&T Corp. (100%)
 
</TABLE>
 
                                       23
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
PASSAIC COUNTY, NEW JERSEY
 
CLIFTON
777 Passaic Avenue.....................       1983      75,000         76.8        1,036        891           0.25           17.99
 
TOTOWA
999 Riverview Drive....................       1988      56,066         95.1          937        914           0.22           17.57
 
WAYNE
201 Willowbrook Boulevard..............       1970     178,329         99.0        2,446      2,435           0.58           13.85
 
SOMERSET COUNTY, NEW JERSEY
 
BASKING RIDGE
222 Mt. Airy Road......................       1986      49,000        100.0          434        434           0.10            8.86
233 Mt. Airy Road......................       1987      66,000        100.0          762        720           0.18           11.55
 
BRIDGEWATER
721 Route 202/206......................       1989     192,741        100.0        3,900      3,900           0.92           20.23
 
UNION COUNTY, NEW JERSEY
 
CLARK
100 Walnut Avenue......................       1985     182,555        100.0        4,105      3,579           0.97           22.49
 
CRANFORD
6 Commerce Drive.......................       1973      56,000        100.0          996        912           0.24           17.79
11 Commerce Drive(6)...................       1981      90,000         96.2          881        742           0.21           10.18
12 Commerce Drive......................       1967      72,260         90.6          594        594           0.14            9.07
20 Commerce Drive......................       1990     176,600         87.0        3,090      2,689           0.73           20.11
65 Jackson Drive.......................       1984      82,778        100.0        1,636      1,233           0.39           19.76
 
NEW PROVIDENCE
890 Mountain Road......................       1977      80,000        100.0        2,030      2,028           0.48           25.38
 
DUTCHESS COUNTY, NEW YORK
 
FISHKILL
300 South Lake Drive...................       1987     118,727         99.8        2,026      2,023           0.48           17.10
 
NASSAU COUNTY, NEW YORK
 
NORTH HEMPSTEAD
111 East Shore Road....................       1980      55,575        100.0        1,528      1,528           0.36           27.49
600 Community Drive....................       1983     206,274        100.0        4,966      4,966           1.17           24.07
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
PASSAIC COUNTY, NEW JERSEY
CLIFTON
777 Passaic Avenue.....................       15.47   Motorola Inc. (19%)
 
TOTOWA
999 Riverview Drive....................       17.14   Bank of New York (56%), Commonwealth Land Title Insurance Co. (11%),
 
                                                        Bankers Mortgage Company (10%)
 
WAYNE
201 Willowbrook Boulevard..............       13.79   The Grand Union Co. (75%), Woodward-Clyde Consultants (24%)
 
SOMERSET COUNTY, NEW JERSEY
BASKING RIDGE
222 Mt. Airy Road......................        8.86   Lucent Technologies Inc. (100%)
 
233 Mt. Airy Road......................       10.91   AT&T Corp. (100%)
 
BRIDGEWATER
721 Route 202/206......................       20.23   Allstate Insurance Company (37%), Norris, McLaughlin & Marcus, PA (31%),
 
                                                        AT&T Corp. (20%)
 
UNION COUNTY, NEW JERSEY
CLARK
100 Walnut Avenue......................       19.61   BDSI, Inc. (41%), Allstate Insurance Company (13%), The Equitable Life
 
                                                        Assurance Society of the United States (10%)
 
CRANFORD
6 Commerce Drive.......................       16.29   Kendle International Inc. (32%), PSE&G--American Resurgence (18%),
 
                                                        Columbia National, Inc. (13%)
 
11 Commerce Drive(6)...................        8.57   Northeast Administrators Inc. (10%)
 
12 Commerce Drive......................        9.07   Dames & Moore (40%), Registrar & Transfer Co. (24%)
 
20 Commerce Drive......................       17.50   PSE&G--American Resurgence (26%), Quintiles Inc. (15%)
 
65 Jackson Drive.......................       14.90   Kraft General Foods, Inc. (35%), Allstate Insurance Co. (27%), Procter &
 
                                                        Gamble Distribution Co., Inc. (18%), Unum Life Insurance Co. (14%)
 
NEW PROVIDENCE
890 Mountain Road......................       25.35   Allstate Insurance Co. (58%), Dun & Bradstreet (26%), K Line America, Inc.
 
                                                        (16%)
 
DUTCHESS COUNTY, NEW YORK
FISHKILL
300 South Lake Drive...................       17.07   Allstate Insurance Company (16%)
 
NASSAU COUNTY, NEW YORK
NORTH HEMPSTEAD
111 East Shore Road....................       27.49   Administrators For The Professions, Inc. (100%)
 
600 Community Drive....................       24.07   CMP Media, Inc. (100%)
 
</TABLE>
 
                                       24
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
ROCKLAND COUNTY, NEW YORK
 
SUFFERN
400 Rella Boulevard....................       1988     180,000         96.5        3,269      3,191           0.78           18.82
 
WESTCHESTER COUNTY, NEW YORK
 
ELMSFORD
100 Clearbrook Road(6).................       1975      60,000        100.0          693        676           0.16           11.55
101 Executive Boulevard................       1971      50,000         94.2          877        861           0.21           18.62
570 Taxter Road........................       1972      75,000         91.4        1,431      1,414           0.34           20.88
 
HAWTHORNE
1 Skyline Drive........................       1980      20,400         99.0          274        270           0.06           13.57
2 Skyline Drive........................       1987      30,000         98.9          394        394           0.09           13.28
17 Skyline Drive.......................       1989      85,000        100.0        1,103      1,103           0.26           12.98
30 Saw Mill River Road.................       1982     248,400        100.0        5,216      4,919           1.24           21.00
7 Skyline Drive(7).....................       1987     109,000         97.8          634        634           0.15           20.10
 
TARRYTOWN
200 White Plains Road..................       1982      89,000         98.5        1,767      1,702           0.42           20.16
220 White Plains Road..................       1984      89,000         83.5        1,677      1,631           0.40           22.57
 
WHITE PLAINS
1 Barker Avenue........................       1975      68,000         95.9        1,482      1,469           0.35           22.73
3 Barker Avenue........................       1983      65,300        100.0        1,380      1,351           0.33           21.13
1 Water Street.........................       1979      45,700         99.8          899        893           0.21           19.71
11 Martine Avenue......................       1987     180,000         86.1        3,441      3,410           0.82           22.20
50 Main Street.........................       1985     309,000         97.9        7,265      7,133           1.72           24.02
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
ROCKLAND COUNTY, NEW YORK
SUFFERN
400 Rella Boulevard....................       18.37   The Prudential Insurance Co. (21%), Provident Savings F.A. (20%), Allstate
 
                                                        Insurance Co. (19%), John Alden Life Insurance Co. (11%)
 
WESTCHESTER COUNTY, NEW YORK
ELMSFORD
100 Clearbrook Road(6).................       11.27   MIM Corporation (18%), Amerihealth Inc. (13%)
 
101 Executive Boulevard................       18.28   Pennysaver Group Inc. (23%), MCS Business Solutions Inc. (11%)
 
570 Taxter Road........................       20.63   Lincoln Financial Adivsors Inc. (16%), New York State United Teachers
 
                                                        Association (10%)
 
HAWTHORNE
1 Skyline Drive........................       13.37   Boxx International Corp. (50%), Childtime Childcare Inc. (49%)
 
2 Skyline Drive........................       13.28   MW Samara (56%), Perini Corp. (43%)
 
17 Skyline Drive.......................       12.98   IBM Corp. (100%)
 
30 Saw Mill River Road.................       19.80   IBM Corp. (100%)
 
7 Skyline Drive(7).....................       20.10   E.M. Industries Inc. (42%), Cortlandt Group Inc. (14%)
 
TARRYTOWN
200 White Plains Road..................       19.41   Independent Health Associates (28%), Allmerica Financial (17%), NYS Dept.
 
                                                        of Environmental CNS (13%)
 
220 White Plains Road..................       21.95   Clientsoft Inc. (13%), Eagle Family Foods Inc. (11%)
 
WHITE PLAINS
1 Barker Avenue........................       22.53   O'Connor McGuinness Conte (19%), United Skys Realty Corp. (18%)
 
3 Barker Avenue........................       20.69   Bernard C. Harris Publishing Co. Inc. (56%)
 
1 Water Street.........................       19.58   Trigen Energy Co. (48%), Stewart Title Insurance Co. (16%)
 
11 Martine Avenue......................       22.00   McCarthy Fingar Donovan (11%), David Worby (11%), Dean Witter Reynolds
 
                                                        Inc. (11%)
 
50 Main Street.........................       23.58   Heineken USA Inc. (10%), National Economic Research (10%)
 
</TABLE>
 
                                       25
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
 
YONKERS
1 Executive Boulevard..................       1982     112,000        100.0        2,270      2,209           0.54           20.27
3 Executive Plaza......................       1987      58,000         65.6          890        888           0.21           23.39
 
CHESTER COUNTY, PENNSYLVANIA
 
BERWYN
1000 Westlakes Drive...................       1989      60,696        100.0        1,361      1,359           0.32           22.42
1055 Westlakes Drive...................       1990     118,487        100.0        2,298      2,298           0.54           19.39
1205 Westlakes Drive...................       1988     130,265         99.8        2,782      2,774           0.66           21.40
1235 Westlakes Drive...................       1986     134,902         98.4        2,827      2,824           0.67           21.30
DELAWARE COUNTY, PENNSYLVANIA
 
MEDIA
1400 Providence Road--Center I.........       1986     100,000         97.9        1,969      1,908           0.47           20.11
1400 Providence Road--Center II........       1990     160,000         99.9        3,062      2,927           0.73           19.16
 
LESTER
100 Stevens Drive......................       1986      95,000         99.7        2,074      2,073           0.49           21.90
200 Stevens Drive......................       1987     208,000         99.7        4,146      4,106           0.98           19.99
300 Stevens Drive......................       1992      68,000        100.0        1,441      1,438           0.34           21.19
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
YONKERS
1 Executive Boulevard..................       19.72   Wise Contact US Optical Corp. (12%), Pedal Holdings Inc. (12%), Protective
 
                                                        Tech International (11%), York, International Agency Inc. (11%)
 
3 Executive Plaza......................       23.34   Metropolitan Life Insurance (22%), Allstate Insurance Company (20%), City
 
                                                        & Suburban Federal Savings Bank (15%)
 
CHESTER COUNTY, PENNSYLVANIA
BERWYN
1000 Westlakes Drive...................       22.39   PNC Bank, NA (38%), Drinker Biddle & Reath (24%), Manchester, Inc. (14%)
 
1055 Westlakes Drive...................       19.39   Tokai Financial Services Inc. (92%)
 
1205 Westlakes Drive...................       21.34   Provident Mutual Life Insurance Co. (35%), Oracle Corp. (30%)
 
1235 Westlakes Drive...................       21.27   Pepper Hamilton & Scheetz (18%), Ratner & Prestia (16%)
 
DELAWARE COUNTY, PENNSYLVANIA
MEDIA
1400 Providence Road--Center I.........       19.49   General Services Admin (13%), Erie Insurance Company (11%)
 
1400 Providence Road--Center II........       18.31   Barnett International (36%)
 
LESTER
100 Stevens Drive......................       21.89   SAP America, Inc. (82%)
 
200 Stevens Drive......................       19.80   PNC Bank NA (52%), Keystone Mercy Health Plan (42%)
 
300 Stevens Drive......................       21.15   SAP America, Inc. (50%), Keystone Mercy Health Plan (28%)
 
</TABLE>
 
                                       26
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
 
MONTGOMERY COUNTY, PENNSYLVANIA
 
LOWER PROVIDENCE
1000 Madison Avenue....................       1990     100,700         96.5        1,650      1,650           0.39           16.98
 
PLYMOUTH MEETING
Five Sentry Parkway East...............       1984      91,600        100.0        1,456      1,454           0.35           15.90
Five Sentry Parkway West...............       1984      38,400        100.0          640        640           0.15           16.67
1150 Plymouth Meeting Mall.............       1970     167,748        100.0        3,193      3,178           0.76           19.03
 
FAIRFIELD COUNTY, CONNECTICUT
 
GREENWICH
500 West Putnam........................       1973     121,250        100.0        2,480      2,474           0.59           22.62
 
NORWALK
40 Richards Avenue(7)..................       1985     145,487         97.1          876        863           0.21           20.03
 
SHELTON
1000 Bridgeport Avenue.................       1986     133,000        100.0        2,453      2,433           0.58           18.44
 
DISTRICT OF COLUMBIA
 
WASHINGTON
1400 L Street, NW(7)...................       1987     159,000         86.2        3,165      3,164           0.75           39.38
1709 New York Avenue, NW(7)............       1972     166,000         94.4        3,731      3,731           0.88           40.61
 
PRINCE GEORGE'S COUNTY, MARYLAND
 
LANHAM
4200 Parliament Place(7)...............       1989     122,000         80.0        1,032      1,028           0.24           22.84
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
MONTGOMERY COUNTY, PENNSYLVANIA
LOWER PROVIDENCE
1000 Madison Avenue....................       16.98   Reality Online Inc. (37%), First Chicago Nat'l Proc. (21%), Danka Corp.
 
                                                        (14%), Seton Company (12%)
 
PLYMOUTH MEETING
Five Sentry Parkway East...............       15.87   Merck & Co. Inc. (77%), Selas Fluid Processing Corp. (23%)
 
Five Sentry Parkway West...............       16.67   Merck & Co. Inc. (70%), David Cutler Group (30%)
 
1150 Plymouth Meeting Mall.............       18.95   Computer Learning Centers, Inc. (18%), Ken-Crest Services (17%), ATC Group
 
                                                        Services Inc. (15%), ECC Management Services (13%)
 
FAIRFIELD COUNTY, CONNECTICUT
GREENWICH
500 West Putnam........................       22.57   Hachette Filipacchi Magazines (27%), Great Brands of Europe Inc. (13%),
 
                                                        Winklevoss Consultants Inc. (12%), Orthapaedic Associates (11%)
 
NORWALK
40 Richards Avenue(7)..................       19.73                                       --
 
SHELTON
1000 Bridgeport Avenue.................       18.29   Weseley Software Development (22%), William Carter Company (20%), Unilever
 
                                                        Home and Personal CA (15%), Toyota Motor Credit Corp. (11%), Land Star
 
                                                        System, Inc. (11%)
 
DISTRICT OF COLUMBIA
WASHINGTON
1400 L Street, NW(7)...................       39.37   Winston & Strawn (59%)
 
1709 New York Avenue, NW(7)............       40.61   Board of Gov/Federal Reserve (71%), United States of America--GSA (13%)
 
PRINCE GEORGE'S COUNTY, MARYLAND
LANHAM
4200 Parliament Place(7)...............       22.75   Group I Software Inc. (43%), State Farm Mutual Auto Ins. Co. (11%)
 
</TABLE>
 
                                       27
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
BEXAR COUNTY, TEXAS
 
SAN ANTONIO
111 Soledad............................       1918     248,153         90.7        2,346      2,320           0.56           10.42
1777 N.E. Loop 410.....................       1986     256,137         94.8        3,533      3,504           0.84           14.55
84 N.E. Loop 410.......................       1971     187,312         89.3        2,497      2,497           0.59           14.93
200 Concord Plaza Drive................       1986     248,700         98.8        4,290      4,280           1.02           17.46
 
COLLIN COUNTY, TEXAS
 
PLANO
555 Republic Place.....................       1986      97,889         94.7        1,389      1,379           0.33           14.98
 
DALLAS COUNTY, TEXAS
 
DALLAS
3030 LBJ Freeway(6)....................       1984     367,018         93.5        5,863      5,803           1.38           17.09
3100 Monticello........................       1984     173,837         93.7        2,577      2,571           0.61           15.82
8214 Westchester.......................       1983      95,509         96.2        1,418      1,417           0.34           15.43
 
IRVING
2300 Valley View.......................       1985     142,634         97.5        2,311      2,292           0.55           16.62
 
RICHARDSON
1122 Alma Road.........................       1977      82,576        100.0          607        607           0.14            7.35
 
HARRIS COUNTY, TEXAS
 
HOUSTON
10497 Town & Country Way...............       1981     148,434         91.5        1,886      1,869           0.45           13.89
14511 Falling Creek....................       1982      70,999         84.6          650        646           0.15           10.82
1717 St. James Place...................       1975     109,574         99.0        1,299      1,278           0.31           11.97
1770 St. James Place...................       1973     103,689         99.0        1,209      1,192           0.29           11.78
5225 Katy Freeway......................       1983     112,213         91.0        1,134      1,127           0.27           11.11
5300 Memorial..........................       1982     155,099         99.4        1,956      1,952           0.46           12.69
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
BEXAR COUNTY, TEXAS
SAN ANTONIO
111 Soledad............................       10.31   SBC Communications, Inc. (34%)
 
1777 N.E. Loop 410.....................       14.43                                       --
 
84 N.E. Loop 410.......................       14.93   Pacificare of Texas, Inc. (30%), KBL Cable, Inc. (26%), Kraft General
 
                                                      Foods Inc. (25%)
 
200 Concord Plaza Drive................       17.42   Merrill Lynch Pierce Fenner Smith (12%)
 
COLLIN COUNTY, TEXAS
PLANO
555 Republic Place.....................       14.88   William Smith Enterprises (22%), Texas Health Choice (17%), Dayton Hudson
 
                                                        Corporation (14%)
 
DALLAS COUNTY, TEXAS
DALLAS
3030 LBJ Freeway(6)....................       16.91   Club Corporation of America (32%)
 
3100 Monticello........................       15.78   Insignia Commercial, Inc. (23%), Time Marketing Corporation/Evans Group
 
                                                        (12%), Heath Insurance Brokers, Inc. (10%)
 
8214 Westchester.......................       15.42   Preston Business Center, Inc. (15%), Malone Mortgage Company of America,
 
                                                        Inc. (12%), State Bank & Trust Co. (11%)
 
IRVING
2300 Valley View.......................       16.48   Nokia, Inc. (38%), Alltel Information Services, Inc. (18%), Computer Task
 
                                                        Group, Inc. (12%), Tricon Restaurant Services (11%)
 
RICHARDSON
1122 Alma Road.........................        7.35   MCI Telecommunications Corp. (100%)
 
HARRIS COUNTY, TEXAS
HOUSTON
10497 Town & Country Way...............       13.76   Vastar Resources, Inc. (23%), Texas Ohio Gas, Inc. (11%)
 
14511 Falling Creek....................       10.75   Nationwide Mutual Insurance Company (12%)
 
1717 St. James Place...................       11.78   MCX Corp (14%), Home Loan Corporation (10%)
 
1770 St. James Place...................       11.61   Neosoft Inc. (10%)
 
5225 Katy Freeway......................       11.04                                       --
 
5300 Memorial..........................       12.66   Drypers Corporation (20%), Datavox, Inc. (20%), HCI Chemicals (USA) Ltd.
 
                                                        Inc. (15%)
 
</TABLE>
 
                                       28
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
 
POTTER COUNTY, TEXAS
 
AMARILLO
6900 IH--40 West.......................       1986      71,771         74.9          522        515           0.12            9.71
 
TARRANT COUNTY, TEXAS
 
EULESS
150 West Parkway.......................       1984      74,429         99.7        1,000        997           0.24           13.48
 
TRAVIS COUNTY, TEXAS
 
AUSTIN
1250 Capital of Texas Hwy. South(7)....       1985     270,703         99.5        4,369      4,360           1.04           20.07
 
MARICOPA COUNTY, ARIZONA
 
GLENDALE
5551 West Talavi Boulevard.............       1991     181,596        100.0        1,454      1,451           0.34            8.01
 
PHOENIX
19640 North 31st Street................       1990     124,171        100.0        1,584      1,572           0.38           12.76
20002 North 19th Avenue................       1986     119,301        100.0          679        679           0.16            5.69
 
SCOTTSDALE
9060 E. Via Linda Boulevard............       1984     111,200        100.0        2,161      2,161           0.51           19.43
 
SAN FRANCISCO COUNTY, CALIFORNIA
 
SAN FRANCISCO
760 Market Street......................       1908     267,446         87.7        4,512      4,490           1.07           19.24
 
ARAPAHOE COUNTY, COLORADO
 
AURORA
750 South Richfield Street(7)..........       1997     108,240        100.0        1,642      1,642           0.39           26.75
 
DENVER
400 South Colorado Boulevard(7)........       1983     125,415         94.5        1,048      1,041           0.25           15.22
 
ENGLEWOOD
5350 South Roslyn Street (6) (7).......       1982      63,754        100.0          816        815           0.19           16.68
9359 East Nichols Avenue(7)............       1997      72,610        100.0          509        509           0.12           12.36
 
BOULDER COUNTY, COLORADO
 
BROOMFIELD
105 South Technology Court(7)..........       1997      37,574        100.0          340        340           0.08           15.95
303 South Technology Court-A(7)........       1997      34,454        100.0          290        290           0.07           10.97
303 South Technology Court-B(7)........       1997      40,416        100.0          341        341           0.08           11.00
 
LOUISVILLE
1172 Century Drive(7)..................       1996      49,566        100.0          467        467           0.11           12.28
248 Centennial Parkway(7)..............       1996      39,266         93.1          370        370           0.09           13.19
285 Century Place(7)...................       1997      69,145        100.0          617        617           0.15           15.73
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
POTTER COUNTY, TEXAS
AMARILLO
6900 IH--40 West.......................        9.58   Sitel Corporation (16%)
 
TARRANT COUNTY, TEXAS
EULESS
150 West Parkway.......................       13.44   Warrantech Automotive, Inc. (34%), Landmark BankMid-Cities (18%), Mike
 
                                                        Bowman Realtors/Century 21 (17%)
 
TRAVIS COUNTY, TEXAS
AUSTIN
1250 Capital of Texas Hwy. South(7)....       20.03   Intelliquest Inc. (14%)
 
MARICOPA COUNTY, ARIZONA
GLENDALE
5551 West Talavi Boulevard.............        7.99   Honeywell, Inc. (100%)
 
PHOENIX
19640 North 31st Street................       12.66   American Express (100%)
 
20002 North 19th Avenue................        5.69   American Express (100%)
 
SCOTTSDALE
9060 E. Via Linda Boulevard............       19.43   Sentry Insurance (63%), Rite Aid Corporation (37%)
 
SAN FRANCISCO COUNTY, CALIFORNIA
SAN FRANCISCO
760 Market Street......................       19.14   Macy's c/o Federated Department Stores (19%)
 
ARAPAHOE COUNTY, COLORADO
AURORA
750 South Richfield Street(7)..........       26.75   T.R.W. Inc. (100%)
 
DENVER
400 South Colorado Boulevard(7)........       15.12   Community Health Plan (12%), Department of Revenue (12%), Norwest Bank
 
                                                        Colorado N.A. (11%), Senter GoldFarb & Rice (10%)
 
ENGLEWOOD
5350 South Roslyn Street (6) (7).......       16.66   Westland Enterprises (17%), Business World Inc. (17%)
 
9359 East Nichols Avenue(7)............       12.36   First Tennessee Bank NA (100%)
 
BOULDER COUNTY, COLORADO
BROOMFIELD
105 South Technology Court(7)..........       15.95   Sun Microsystems Inc. (100%)
 
303 South Technology Court-A(7)........       10.97   Sun Microsystems Inc. (100%)
 
303 South Technology Court-B(7)........       11.00   Sun Microsystems Inc. (100%)
 
LOUISVILLE
1172 Century Drive(7)..................       12.28   Skyconnect Inc. (40%), Evolving Systems Inc. (22%), MCI Systemhouse Corp.
 
                                                        (22%), RX Kinetix Inc. (16%)
 
248 Centennial Parkway(7)..............       13.19   Rock Bottom Restaurants Inc. (59%), Aircell Inc. (28%)
 
285 Century Place(7)...................       15.73   HBO & Company of Georgia (100%)
 
</TABLE>
 
                                       29
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                 PERCENTAGE                          OFFICE/FLEX, AND      1998
                                                       NET         LEASED        1998       1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE       AS OF        BASE     EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR        AREA       12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT    (SQ. FT.)      (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
DENVER COUNTY, COLORADO
 
DENVER
3600 South Yosemite(7).................       1974     133,743        100.0          812        812           0.19            9.51
 
DOUGLAS COUNTY, COLORADO
 
ENGLEWOOD
384 Inverness Drive South(7)...........       1985      51,523        100.0          603        594           0.14           15.26
400 Inverness Drive(7).................       1997     111,608         99.9        1,343      1,339           0.32           21.24
5975 South Quebec Street(7)............       1996     102,877         98.7        1,728      1,725           0.41           22.18
67 Inverness Drive East(7).............       1996      54,280        100.0          489        489           0.12           11.74
 
PARKER
9777 Pyramid Court(7)..................       1995     120,281        100.0        1,021      1,021           0.24           11.06
 
EL PASO COUNTY, COLORADO
 
COLORADO SPRINGS
1975 Research Parkway(7)...............       1997     115,250         95.7          719        710           0.17           11.49
 
JEFFERSON COUNTY, COLORADO
 
LAKEWOOD
141 Union Boulevard(7).................       1985      63,600         94.7          739        720           0.18           15.99
 
HILLSBOROUGH COUNTY, FLORIDA
 
TAMPA
501 Kennedy Boulevard..................       1982     297,429         89.7        3,402      3,389           0.81           12.75
 
POLK COUNTY, IOWA
 
WEST DES MOINES
2600 Westown Parkway...................       1988      72,265         98.2        1,088      1,079           0.26           15.33
 
DOUGLAS COUNTY, NEBRASKA
 
OMAHA
210 South 16th Street..................       1894     319,535         95.0        3,225      3,216           0.76           10.62
                                                    ----------        -----    ---------  ---------         ------      -----------
Total Office Properties................             22,420,331        97.11    $ 377,828  $ 370,248          89.56      $    18.51
                                                    ----------        -----    ---------  ---------         ------      -----------
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
DENVER COUNTY, COLORADO
DENVER
3600 South Yosemite(7).................        9.51   M.D.C. Holdings Inc. (100%)
 
DOUGLAS COUNTY, COLORADO
ENGLEWOOD
384 Inverness Drive South(7)...........       15.03   Quickpen International Corp. (37%), United States of America--GSA (19%)
 
400 Inverness Drive(7).................       21.17   Convergent Communications Inc. (26%), Summit Group Inc. (22%), Compuware
 
                                                        Corp. (17%), Ani Colorado Inc./Alliance Int'l (16%)
 
5975 South Quebec Street(7)............       22.14   Northern Telecom Inc. (43%), Silicon Graphics Inc. (28%)
 
67 Inverness Drive East(7).............       11.74   T-Netix Inc. (69%), Convergent Communications Inc. (31%)
 
PARKER
9777 Pyramid Court(7)..................       11.06   Evolving System Inc. (100%)
 
EL PASO COUNTY, COLORADO
COLORADO SPRINGS
1975 Research Parkway(7)...............       11.35   Bombardier Capital Florida (69%), Concert Management Services (18%)
 
JEFFERSON COUNTY, COLORADO
LAKEWOOD
141 Union Boulevard(7).................       15.58   Arbitration Forums Inc. (18%), Special District Management (11%)
 
HILLSBOROUGH COUNTY, FLORIDA
TAMPA
501 Kennedy Boulevard..................       12.70   Fowler, White, Gillen, Boggs, Villareal & Banker, PA (33%), Raytheon
 
                                                        Engineers & Constructors, Inc. (31%)
 
POLK COUNTY, IOWA
WEST DES MOINES
2600 Westown Parkway...................       15.20   St. Paul Fire and Marine Insurance Company (19%), MCI Telecommunications
 
                                                        Corp. (14%), New England Mutual Life Insurance Company (13%), American
 
                                                        Express Financial Advisors, Inc. (12%)
 
DOUGLAS COUNTY, NEBRASKA
OMAHA
210 South 16th Street..................       10.59   Union Pacific Railroad Company (70%)
 
                                         -----------
Total Office Properties................  $    18.16
                                         -----------
</TABLE>
 
                                       30
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
OFFICE/FLEX PROPERTIES
 
BURLINGTON COUNTY, NEW JERSEY
 
BURLINGTON
3 Terri Lane(7)........................       1991      64,500          82.8         486        486            0.12           9.89
5 Terri Lane(7)........................       1992      74,555         100.0         506        505            0.12           7.37
 
MOORESTOWN
1 Executive Drive(7)...................       1989      20,570          43.0         115        115            0.03          14.12
101 Commerce Drive(7)..................       1988      64,700         100.0         335        315            0.08           5.62
101 Executive Drive(7).................       1990      29,355          84.2         205        205            0.05           9.01
102 Executive Drive(7).................       1990      64,000          80.0         321        314            0.08           6.81
1256 North Church(7)...................       1984      63,495         100.0         316        289            0.07           5.41
1507 Lancer Drive(7)...................       1995      32,700         100.0          28         28            0.01           0.93
1510 Lancer Drive(7)...................       1998      88,000         100.0         171        171            0.04           4.15
201 Commerce Drive(7)..................       1986      38,400         100.0         178        178            0.04           5.04
225 Executive Drive(7).................       1990      50,600          85.8         243        233            0.06           6.08
30 Twosome Drive(7)....................       1997      39,675         100.0         205        205            0.05           5.61
40 Twosome Drive(7)....................       1996      40,265         100.0         255        255            0.06           6.88
50 Twosome Drive(7)....................       1997      34,075         100.0         248        248            0.06           7.91
840 North Lenola(7)....................       1995      38,300         100.0         250        250            0.06           7.09
844 North Lenola(7)....................       1995      28,670         100.0         196        196            0.05           7.43
97 Foster Road(7)......................       1982      43,200         100.0         170        170            0.04           4.27
 
WEST DEPTFORD
1451 Metropolitan Drive(7).............       1996      21,600         100.0         137        137            0.03           6.89
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
OFFICE/FLEX PROPERTIES
BURLINGTON COUNTY, NEW JERSEY
BURLINGTON
3 Terri Lane(7)........................        9.89   Tempel Steel Company (18%), Signature Home Care (16%), BCM Engineers Inc.
 
                                                       (15%), General Services Administrators (10%)
 
5 Terri Lane(7)........................        7.36   Actimed Laboratories Inc. (38%), Lykes Dispensing Systems Inc. (20%), West
 
                                                       Electronics Inc. (12%)
 
MOORESTOWN
1 Executive Drive(7)...................       14.12   T.T.I. (18%)
 
101 Commerce Drive(7)..................        5.29   Beckett Corporation (100%)
 
101 Executive Drive(7).................        9.01   Bayada Nurses Inc. (24%), Total Package Marketing Inc. (20%), National
 
                                                       Service Solutions (15%)
 
102 Executive Drive(7).................        6.66   Comtrex Systems Corp. (29%), Commonwealth Scientific Corp. (21%), Judge
 
                                                       Computer (20%), Judge Imaging Systems Inc. (10%)
 
1256 North Church(7)...................        4.94   Package Coordinators Inc. (50%), James C. Anderson Associates (30%), Ketec
 
                                                       Inc. (20%)
 
1507 Lancer Drive(7)...................        0.93   Tad's Delivery Service Inc. (31%)
 
1510 Lancer Drive(7)...................        4.15   Tad's Delivery Service Inc. (100%)
 
201 Commerce Drive(7)..................        5.04   Flow Thru Metals Inc. (25%), Franchise Stores Realty Corp. (25%), RE/Com
 
                                                       Group (25%), Tropicana Products Inc. (25%)
 
225 Executive Drive(7).................        5.83   Eastern Research Inc. (33%), Schermerhorn Brothers Inc. (19%), Bioclimatic
 
                                                       Inc. (14%), Band-It Index Inc. (11%)
 
30 Twosome Drive(7)....................        5.61   Hartman Cards Inc. (28%), Sagot Office Interiors Inc. (24%), Aramark
 
                                                       Sports/Entertainment (14%), The Closet Factory (12%), C&L Packaging Inc.
 
                                                       (12%), Mosler Inc. (10%)
 
40 Twosome Drive(7)....................        6.88   Vitalink Pharmacy Services (49%), A.D.P. Inc. (37%), Bellstar Inc. (14%)
 
50 Twosome Drive(7)....................        7.91   Wells Fargo (44%), Sussex Wine Merchants (30%), McCarthy Associates Inc.
 
                                                       (14%), Inacomp Financial Services (12%)
 
840 North Lenola(7)....................        7.09   Millar Elevator Service Co. (31%), Twin Pines Construction Co. (31%),
 
                                                       Technology Service Solutions (25%), Computer Integration Services (13%)
 
844 North Lenola(7)....................        7.43   First Union National Bank (41%), Curbell Inc. (34%), James J. Martin Inc.
 
                                                       (25%)
 
97 Foster Road(7)......................        4.27   Consumer Response Company Inc. (50%), Pioneer and Company Inc. (33%),
 
                                                       Colornet Inc. (17%)
 
WEST DEPTFORD
1451 Metropolitan Drive(7).............        6.89   Garlock Bearings Inc. (100%)
 
</TABLE>
 
                                       31
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
MERCER COUNTY, NEW JERSEY
 
HAMILTON TOWNSHIP
100 Horizon Drive......................       1989      13,275        100.0          226        226           0.05           17.02
200 Horizon Drive......................       1991      45,770         85.3          445        432           0.11           11.40
300 Horizon Drive......................       1989      69,780        100.0          912        903           0.22           13.07
500 Horizon Drive......................       1990      41,205         81.9          383        357           0.09           11.35
 
MONMOUTH COUNTY, NEW JERSEY
 
WALL TOWNSHIP
1320 Wykoff Avenue.....................       1986      20,336         28.6          143        143           0.03           24.59
1324 Wykoff Avenue.....................       1987      21,168         75.0          227        195           0.05           14.30
1325 Campus Parkway....................       1988      35,000         92.9          232        221           0.06            7.14
1340 Campus Parkway....................       1992      72,502         94.6          748        659           0.18           10.91
1345 Campus Parkway(7).................       1995      76,300        100.0          699        699           0.17            9.16
1433 Highway 34........................       1985      69,020         58.2          517        435           0.12           12.87
 
PASSAIC COUNTY, NEW JERSEY
 
TOTOWA
2 Center Court(7)......................       1998      30,600         99.3          149        116           0.04            8.65
11 Commerce Way........................       1989      47,025         77.8          403        392           0.10           11.02
20 Commerce Way........................       1992      42,540         85.9          371        371           0.09           10.15
29 Commerce Way........................       1990      48,930        100.0          465        420           0.11            9.50
40 Commerce Way........................       1987      50,576        100.0          552        458           0.13           10.91
45 Commerce Way........................       1992      51,207        100.0          475        445           0.11            9.28
60 Commerce Way........................       1988      50,333        100.0          406        352           0.10            8.07
80 Commerce Way........................       1996      22,500        100.0          268        166           0.06           11.91
100 Commerce Way.......................       1996      24,600        100.0          293        169           0.07           11.91
120 Commerce Way.......................       1994       9,024        100.0           87         85           0.02            9.64
140 Commerce Way.......................       1994      26,881         99.5          261        257           0.06            9.76
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
MERCER COUNTY, NEW JERSEY
HAMILTON TOWNSHIP
100 Horizon Drive......................       17.02   HIP of New Jersey Inc. (100%)
 
200 Horizon Drive......................       11.07   O.H.M. Remediation Services Corp. (85%)
 
300 Horizon Drive......................       12.94   State of NJ/DEP (50%), McFaul & Lyons Inc. (26%), Fluor Daniel GTI (24%)
 
500 Horizon Drive......................       10.58   Anacomp Inc. (30%), Lakeview Child Center Inc. (19%), NJ Builders Assoc.
 
                                                        (14%), Diedre Moire Corp. (11%)
 
MONMOUTH COUNTY, NEW JERSEY
WALL TOWNSHIP
1320 Wykoff Avenue.....................       24.59   Lucent Technologies Inc. (29%)
 
1324 Wykoff Avenue.....................       12.28   Collectors Alliance Inc. (53%), Supply-Saver, Inc. (22%)
 
1325 Campus Parkway....................        6.80   American Press Inc. (71%), Centennial Cellular Corp. (14%)
 
1340 Campus Parkway....................        9.61   Groundwater Environmental Services Inc. (33%), GEAC Computers Inc. (22%),
 
                                                        State Farm Co. (17%), Association For Retarded Citizens (11%), Digital
 
                                                        Lightwave, Inc. (11%)
 
1345 Campus Parkway(7).................        9.16   Depot America, Inc. (37%), Quadramed Corp. (24%), De Vine Corp. (11%)
 
1433 Highway 34........................       10.83   State Farm Mutual Insurance Co. (30%), New Jersey Natural Gas Co (11%)
 
PASSAIC COUNTY, NEW JERSEY
TOTOWA
2 Center Court(7)......................        6.73   Nomadic Display (36%), Electro Rent Corp. (33%), Alpine Electronics of
 
                                                        America (30%)
 
11 Commerce Way........................       10.71   Coram Alternative Site Services (56%), Olsten Health Services (11%),
 
                                                        Siemens Electromechanical (11%)
 
20 Commerce Way........................       10.15   Motorola Inc. (45%), Siemens Fiber Optics (41%)
 
29 Commerce Way........................        8.58   Sandvik Sorting Systems, Inc. (44%), Patterson Dental Supply Inc. (23%),
 
                                                        Fujitec America Inc. (22%), Wiltel Communications LLC (11%)
 
40 Commerce Way........................        9.06   Thomson Electron Tubes (43%), Intertek Testing Services Inc. (29%),
 
                                                        Snap-On, Inc. (14%), System 3R USA Inc. (14%)
 
45 Commerce Way........................        8.69   Ericsson Radio Systems Inc. (52%), Woodward-Clyde Consultants (27%),
 
                                                        Security Technologies, Inc. (10%), Oakwood Corporate Housing (10%)
 
60 Commerce Way........................        6.99   Relectronic Service Corp. (43%), Ericsson Inc. (29%), Maxlite S.K. America
 
                                                        (14%), HW Exhibits (14%)
 
80 Commerce Way........................        7.38   Hey Diddle Diddle Inc. (40%), Idexx Veterinary Services (37%), Inter-
 
                                                        American Safety Council (12%), Bell Atlantic (11%)
 
100 Commerce Way.......................        6.87   Minolta Business Systems, Inc. (34%), Pharmamerica Inc. (34%), CCH Inc.
 
                                                        (32%)
 
120 Commerce Way.......................        9.42   Deerfield Healthcare (100%)
 
140 Commerce Way.......................        9.61   Advanced Image System Inc. (20%), MSR Publications Inc. (19%), Holder
 
                                                        Group, Inc. (11%), Alpha Testing (10%), Dairygold (10%), Showa Tool USA,
 
                                                        Inc. (10%), Telsource, Inc. (10%), Universal Hospital Services (10%)
 
</TABLE>
 
                                       32
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
 
WESTCHESTER COUNTY, NEW YORK
 
ELMSFORD
1 Westchester Plaza....................       1967      25,000        100.0          292        284           0.07           11.68
2 Westchester Plaza....................       1968      25,000        100.0          407        407           0.10           16.28
3 Westchester Plaza....................       1969      93,500        100.0        1,094      1,093           0.26           11.70
4 Westchester Plaza....................       1969      44,700         92.4          573        549           0.14           13.87
5 Westchester Plaza....................       1969      20,000        100.0          276        274           0.07           13.80
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
WESTCHESTER COUNTY, NEW YORK
ELMSFORD
1 Westchester Plaza....................       11.36   British Apparel Collection (40%), American Greeting Corp. (20%), RS Knapp
 
                                                        (20%), Thin Film Concepts Inc. (20%)
 
2 Westchester Plaza....................       16.28   Board of Cooperative Education (80%), Kin-Tronics Inc. (10%), Squires
 
                                                        Productions Inc. (10%)
 
3 Westchester Plaza....................       11.69   Apria Healthcare Inc. (32%), Kangol Headware Inc. (28%), V-Band Corp.
 
                                                        (16%), Dental Concepts Inc. (12%)
 
4 Westchester Plaza....................       13.29   Metropolitan Life (38%), EEV Inc. (34%), Arsys Innotech Corp. (13%)
 
5 Westchester Plaza....................       13.70   Kramer Scientific Corp. (26%), Rokonet Industries USA Inc. (25%), UA
 
                                                        Plumbers Education Fund (25%), Fujitsu (12%), Furniture Etc. Inc. (12%)
 
</TABLE>
 
                                       33
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
6 Westchester Plaza....................       1968      20,000         78.0          201        198           0.05           12.88
7 Westchester Plaza....................       1972      46,200        100.0          617        615           0.15           13.35
8 Westchester Plaza....................       1971      67,200        100.0          889        803           0.21           13.23
11 Clearbrook Road.....................       1974      31,800        100.0          324        323           0.08           10.19
75 Clearbrook Road.....................       1990      32,720        100.0          816        816           0.19           24.94
150 Clearbrook Road....................       1975      74,900        100.0        1,014      1,006           0.24           13.54
175 Clearbrook Road....................       1973      98,900         65.8          897        862           0.21           13.78
200 Clearbrook Road....................       1974      94,000         99.7          793        781           0.19            8.46
250 Clearbrook Road....................       1973     155,000         83.6        1,124      1,123           0.27            8.67
50 Executive Boulevard.................       1969      45,200         97.2          383        379           0.09            8.72
77 Executive Boulevard.................       1977      13,000        100.0          180        179           0.04           13.85
85 Executive Boulevard.................       1968      31,000         99.4          387        384           0.09           12.56
300 Executive Boulevard................       1970      60,000         99.7          575        575           0.14            9.61
350 Executive Boulevard................       1970      15,400         98.8          243        243           0.06           15.97
399 Executive Boulevard................       1962      80,000         89.5          930        929           0.22           12.99
400 Executive Boulevard................       1970      42,200         99.9          532        526           0.13           12.62
500 Executive Boulevard................       1970      41,600         88.3          564        559           0.13           15.35
525 Executive Boulevard................       1972      61,700        100.0          838        832           0.20           13.58
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
6 Westchester Plaza....................       12.69   Signacon Controls Inc. (28%), Xerox Corp. (28%), Girard Rubber Co. (13%)
 
7 Westchester Plaza....................       13.31   Emigrant Savings Bank (69%), Fire End Croker Corp. (22%)
 
8 Westchester Plaza....................       11.95   Mamiya America Corp. (24%), Ciba Specialty Chemicals Corp. (19%), Kubra
 
                                                        Data Transfer Ltd. (15%)
 
11 Clearbrook Road.....................       10.16   Eastern Jungle Gym (27%), MCS Marketing Group Inc. (24%), Treetops Inc.
 
                                                        (21%), Creative Medical Supplies (14%), Westchester Party Rental Inc.
 
                                                        (14%)
 
75 Clearbrook Road.....................       24.94   Evening Out Inc. (100%)
 
150 Clearbrook Road....................       13.43   Court Sports I LLC (24%), Philips Medical (18%), Transwestern Publications
 
                                                        (12%)
 
175 Clearbrook Road....................       13.25   Hypres Inc (15%)
 
200 Clearbrook Road....................        8.33   Brunschwig & Fils Inc. (39%), Proftech Corp. (20%), WYSE Technology (15%)
 
250 Clearbrook Road....................        8.67   AFP Imaging Corp. (42%), The Artina Group Inc. (14%), Conri Services Inc.
 
                                                        (11%)
 
50 Executive Boulevard.................        8.63   MMO Music Group (71%), Medical Billing Associates (22%)
 
77 Executive Boulevard.................       13.77   Bright Horizons Children (55%), WNN Corp. (45%)
 
85 Executive Boulevard.................       12.46   VREX Inc. (49%), Westhab Inc. (18%), John Caufield Fiber Optical (13%),
 
                                                        Saturn II Systems Inc. (11%)
 
300 Executive Boulevard................        9.61   Varta Batteries Inc. (44%), Princeton Ski Outlet Corp. (43%), LMG
 
                                                        International Inc. (12%)
 
350 Executive Boulevard................       15.97   Copytex Corp. (99%)
 
399 Executive Boulevard................       12.97   American Banknote Holographic (74%), Wine Enthusiast Inc. (16%)
 
400 Executive Boulevard................       12.48   Baker Engineering NY Inc. (39%), North American Van Lines (25%)
 
500 Executive Boulevard................       15.22   Original Consumer (36%), Dover Elevator (16%), Angelica Corp. (16%),
 
                                                        Charles Martine Inc.(13%)
 
525 Executive Boulevard................       13.48   Vie De France Yamasaki Inc. (59%), New York Blood Center Inc. (21%)
 
</TABLE>
 
                                       34
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
HAWTHORNE
4 Skyline Drive........................       1987      80,600         96.8        1,137      1,044           0.27           14.57
8 Skyline Drive........................       1985      50,000         98.9          682        665           0.16           13.79
10 Skyline Drive.......................       1985      20,000        100.0          278        260           0.07           13.90
11 Skyline Drive.......................       1989      45,000        100.0          670        656           0.16           14.89
15 Skyline Drive.......................       1989      55,000        100.0          856        789           0.20           15.56
200 Saw Mill River Road................       1965      51,100         99.6          537        521           0.13           10.55
 
YONKERS
1 Odell Plaza..........................       1980     106,000         98.5        1,224      1,220           0.29           11.72
5 Odell Plaza..........................       1983      38,400         99.6          498        498           0.12           13.02
7 Odell Plaza..........................       1984      42,600         99.6          636        616           0.15           14.99
4 Executive Plaza......................       1986      80,000         99.9          989        937           0.23           12.37
6 Executive Plaza......................       1987      80,000         90.4        1,056      1,040           0.25           14.60
100 Corporate Boulevard................       1987      78,000         78.5        1,208      1,206           0.29           19.73
200 Corporate Boulevard South..........       1990      84,000         99.8        1,314      1,295           0.31           15.67
 
FAIRFIELD COUNTY, CONNECTICUT
 
STAMFORD
419 West Avenue........................       1986      88,000         99.7        1,534      1,528           0.36           17.48
500 West Avenue........................       1988      25,000        100.0          332        328           0.08           13.28
550 West Avenue........................       1990      54,000        100.0          753        743           0.18           13.94
650 West Avenue(7).....................       1998      40,000        100.0          105         85           0.02           13.69
                                                    ----------        -----    ---------  ---------         ------      -----------
Total Office/Flex Properties...........              3,941,952        93.76    $  40,385  $  38,972           9.62       $   11.23
                                                    ----------        -----    ---------  ---------         ------      -----------
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
HAWTHORNE
4 Skyline Drive........................       13.38   GEC Alsthom Int'l. (60%)
 
8 Skyline Drive........................       13.45   Cityscape Corp. (62%), Reveo Inc (29%)
 
10 Skyline Drive.......................       13.00   Bi-Tronics Inc./LCA Sales Corp. (52%), Phoenix Systems Int'l (32%), Galson
 
                                                        Corp. (16%)
 
11 Skyline Drive.......................       14.58   Cube Computer (41%), Bowthorpe Holdings (19%), Agathon Machine Inc. (12%),
 
                                                        Planned Parenthood (11%)
 
15 Skyline Drive.......................       14.35   Tellabs Inc. (33%), Emisphere Technology (24%), Minolta Copier Corp. (16%)
 
200 Saw Mill River Road................       10.24   Walter Degruyter Inc. (21%), Abscoa Industries Inc. (18%), Monohans
 
                                                        Plumbing Inc. (17%), Argents Air Express Ltd. (12%)
 
YONKERS
1 Odell Plaza..........................       11.68   Court Sports II LLC (19%), Gannet Satellite Info Network (11%)
 
5 Odell Plaza..........................       13.02   Voyerta Technologies Inc. (44%), Photo File Inc. (34%), Pharmerica Inc.
 
                                                        (22%)
 
7 Odell Plaza..........................       14.52   US Postal Service (41%), TT Systems Co. (24%), Bright Horizons (16%)
 
4 Executive Plaza......................       11.72   O.K. Industries (42%), E&B Giftware Inc. (22%), Universal Outdoor
 
                                                        Advertising (12%)
 
6 Executive Plaza......................       14.38   Cablevision Systems Corp. (40%), Yonkers Savings & Loan Assoc. (11%)
 
100 Corporate Boulevard................       19.70   MonteFiore Medical Center (19%), Sempra Energy Trading Corp. (13%), Minami
 
                                                        International Corp. (12%), Medigene Inc. (11%)
 
200 Corporate Boulevard South..........       15.45   Belmay Inc. (32%), Montefiore Medical Center (23%) Advanced Viral Research
 
                                                        Corp. (20%)
 
FAIRFIELD COUNTY, CONNECTICUT
STAMFORD
419 West Avenue........................       17.42   Fuji Medical Systems USA Inc. (80%)
 
500 West Avenue........................       13.12   Stamford Associates (26%), Convergent Communications (26%), Lead Trackers
 
                                                        Inc. (20%), Seneca Media Group Inc. (17%), M. Cohen and Sons Inc. (11%)
 
550 West Avenue........................       13.76   Lifecodes Corp. (68%), Davidoff of Geneva Inc. (32%)
 
650 West Avenue(7).....................       11.08   Davidoff of Geneva (CT) Inc. (100%)
 
                                         -----------
Total Office/Flex Properties...........   $   10.81
                                         -----------
</TABLE>
 
                                       35
<PAGE>
<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OF
                                                                                                        TOTAL 1998
                                                                                                          OFFICE,
                                                                                                     OFFICE/FLEX, AND      1998
                                                       NET       PERCENTAGE                 1998        INDUSTRIAL/       AVERAGE
                                                     RENTABLE   LEASED AS OF   1998 BASE  EFFECTIVE   WAREHOUSE BASE     BASE RENT
                                           YEAR     AREA (SQ.     12/31/98       RENT       RENT           RENT         PER SQ. FT.
PROPERTY LOCATION                          BUILT       FT.)        (%)(1)      ($000)(2)  ($000)(3)         (%)           ($)(4)
- ---------------------------------------  ---------  ----------  -------------  ---------  ---------  -----------------  -----------
<S>                                      <C>        <C>         <C>            <C>        <C>        <C>                <C>
INDUSTRIAL/WAREHOUSE PROPERTIES
 
WESTCHESTER COUNTY, NEW YORK
 
ELMSFORD
1 Warehouse Lane.......................       1957       6,600        100.0           57         56           0.01            8.64
2 Warehouse Lane.......................       1957      10,900        100.0          114        113           0.03           10.46
3 Warehouse Lane.......................       1957      77,200        100.0          269        269           0.06            3.48
4 Warehouse Lane.......................       1957     195,500         88.9        1,855      1,826           0.44           10.67
5 Warehouse Lane.......................       1957      75,100         94.8          678        672           0.16            9.52
6 Warehouse Lane.......................       1982      22,100        100.0          504        504           0.12           22.81
                                                    ----------        -----    ---------  ---------         ------      -----------
Total Industrial/Warehouse Properties..                387,400        93.39%   $   3,477  $   3,440           0.82      $     9.61
                                                    ----------        -----    ---------  ---------         ------      -----------
Total Office, Office/Flex, and
  Industrial/ Warehouse Properties.....             26,749,683        96.56%   $ 421,690  $ 412,660         100.00      $    17.35
                                                    ----------        -----    ---------  ---------         ------      -----------
                                                    ----------        -----    ---------  ---------         ------      -----------
 
<CAPTION>
 
                                            1998
                                           AVERAGE
                                          EFFECTIVE
                                          RENT PER
                                           SQ. FT.    TENANTS LEASING 10% OR MORE OF NET RENTABLE AREA PER PROPERTY AS OF
 
PROPERTY LOCATION                          ($)(5)     12/31/98
 
- ---------------------------------------  -----------  --------------------------------------------------------------------------
 
<S>                                      <C>          <C>
INDUSTRIAL/WAREHOUSE PROPERTIES
WESTCHESTER COUNTY, NEW YORK
ELMSFORD
1 Warehouse Lane.......................        8.48   JP Trucking Service Inc. (100%)
 
2 Warehouse Lane.......................       10.37   RJ Bruno Roofing Inc. (55%), Savin Engineers PC (41%)
 
3 Warehouse Lane.......................        3.48   United Parcel Service (100%)
 
4 Warehouse Lane.......................       10.51   San Mar Laboratories Inc. (63%), Westinghouse Air Brake Co. (14%)
 
5 Warehouse Lane.......................        9.44   F&V Distribution Co. (62%), E & H Tire Buying Service (19%)
 
6 Warehouse Lane.......................       22.81   Conway Central Express (100%)
 
                                         -----------
Total Industrial/Warehouse Properties..  $     9.51
                                         -----------
Total Office, Office/Flex, and
  Industrial/ Warehouse Properties.....  $    16.99
                                         -----------
                                         -----------
</TABLE>
 
- ----------------------------------------
 
(1) Based on all leases in effect as of December 31, 1998.
 
(2) Total base rent for 1998, determined in accordance with generally accepted
    accounting principles ("GAAP"). Substantially all of the leases provide for
    annual base rents plus recoveries and escalation charges based upon the
    tenant's proportionate share of and/or increases in real estate taxes and
    certain operating costs, as defined, and the pass through of charges for
    electrical usage.
 
(3) Total base rent for 1998 minus total 1998 amortization of tenant
    improvements, leasing commissions and other concessions and costs,
    determined in accordance with GAAP.
 
(4) Base rent for 1998 divided by net rentable square feet leased at December
    31, 1998. For those properties acquired by the Operating Partnership during
    1998, amounts presented are annualized, as per Note 7.
 
(5) Effective rent for 1998 divided by net rentable square feet leased at
    December 31, 1998. For those properties acquired by the Operating
    Partnership during 1998, amounts presented are annualized, as per Note 7.
 
(6) Excludes office space leased by the Operating Partnership from base rent,
    effective rent and per square foot amounts.
 
(7) As this property was acquired or placed in service by the Operating
    Partnership during 1998, the amounts represented in 1998 base rent and 1998
    effective rent reflect only that portion of the year during which the
    Operating Partnership owned or placed the property in service. Accordingly,
    these amounts may not be indicative of the property's full year results. For
    comparison purposes, the amounts represented in 1998 average base rent per
    sq. ft. and 1998 average effective rent per sq. ft. for this property have
    been calculated by taking 1998 base rent and 1998 effective rent for such
    property and annualizing these partial-year results, dividing such
    annualized amounts by the net rentable square feet leased at December 31,
    1998. These annualized per square foot amounts may not be indicative of the
    property's results had the Operating Partnership owned or placed such
    property in service for the entirety of 1998.
 
                                       36
<PAGE>
RETAIL PROPERTIES
 
    The Operating Partnership owned two stand-alone retail properties as of
December 31, 1998, described below:
 
    The Operating Partnership owns an 8,000 square foot restaurant, constructed
in 1986, located at 2 Executive Plaza in the South Westchester Executive Park in
Yonkers, Westchester County, New York. The restaurant is 100 percent leased to
Magic at Yonkers, Inc. for use as a Red Robin restaurant under a 25-year lease.
The lease currently provides for fixed annual base rent of $265,000, with
fully-reimbursed real estate taxes, and operating expenses escalated based on
the consumer price index ("CPI") over a base year CPI. The lease, which expires
in June 2012, includes scheduled rent increases in July 2002 to approximately
$300,000 annually, and in July 2007 to approximately $345,000 annually. The
lease also provides for additional rent calculated as a percentage of sales over
a specified sales amount, as well as for two five-year renewal options. 1998
total base rent for the property, calculated in accordance with GAAP, was
approximately $301,356.
 
    The Operating Partnership also owns a 9,300 square foot restaurant,
constructed in 1984, located at 230 White Plains Road, Tarrytown, Westchester
County, New York. The restaurant is 100 percent leased to TGI Fridays under a
10-year lease which provides for fixed annual base rent of approximately
$195,000, with fully-reimbursed real estate taxes, and operating expenses
escalated based on CPI over a base year CPI. The lease, which expires in August
2004, also provides for additional rent calculated as a percentage of sales over
a specified sales amount, as well as for four five-year renewal options. 1998
total base rent for the property, calculated in accordance with GAAP, was
approximately $195,000.
 
LAND LEASES
 
    The Operating Partnership owned two land leases as of December 31, 1998,
described below:
 
    The Operating Partnership leases land to Star Enterprises, where a 2,264
square-foot Texaco gas station was constructed, located at 1 Enterprise
Boulevard in Yonkers, Westchester County, New York. The 15-year, triple-net land
lease provided for annual rent of approximately $125,000 through January 1998,
with an increase to approximately $145,000 annual rent through April 30, 2005.
The lease also provides for two five-year renewal options. 1998 total base rent
under this lease, calculated in accordance with GAAP, was approximately
$143,972.
 
    The Operating Partnership also leases five acres of land to Rake Realty,
where a 103,500 square-foot office building exists, located at 700 Executive
Boulevard, Elmsford, Westchester County, New York. The 22-year, triple-net land
lease provides for fixed annual rent plus a CPI adjustment every five years, and
expires in November 2000. 1998 total base rent under this lease, calculated in
accordance with GAAP, was approximately $96,456. The lease also provides for
several renewal options which could extend the lease term for an additional 30
years.
 
MULTI-FAMILY RESIDENTIAL PROPERTIES
 
    The Operating Partnership owned two multi-family residential properties, as
of December 31, 1998, described below:
 
    TENBY CHASE APARTMENTS, DELRAN, BURLINGTON COUNTY, NEW JERSEY:  The
Operating Partnership's multi-family residential property, known as the Tenby
Chase Apartments, was built in 1970. The property contains 327 units, comprised
of 196 one-bedroom units and 131 two-bedroom units, with an average size of
approximately 1,235 square feet per unit. The property had an average monthly
rental rate of approximately $721 per unit during 1998 and was approximately
98.2 percent leased as of December 31, 1998. The property had 1998 total base
rent of approximately $2.8 million, which represented approximately 0.6 percent
of the Company's 1998 total base rent. The average occupancy rate for the
property in each of 1998, 1997 and 1996 was 96.0 percent, 95.5 percent, and 95.3
percent, respectively.
 
                                       37
<PAGE>
    25 MARTINE AVENUE, WHITE PLAINS, WESTCHESTER COUNTY, NEW YORK:  The
Operating Partnership's multi-family residential property, acquired in the RM
Transaction and known as 25 Martine Avenue, was built in 1987. The property
contains 124 residential units, comprised of 18 studio units, 71 one-bedroom
units and 35 two-bedroom units, with an average size of approximately 722 square
feet per unit. The property had an average monthly rental rate of approximately
$1,497 per unit during 1998 and was 97.6 percent leased as of December 31, 1998.
The property also has retail space. The property had 1998 total base rent of
approximately $2.3 million, which represented approximately 0.5 percent of the
Company's 1998 total base rent. The average occupancy rate for the property in
each of 1998, 1997 and 1996 was 96.4 percent, 97.6 percent, and 96.4 percent,
respectively.
 
REDEVELOPMENT OFFICE PROPERTY
 
    As of December 31, 1998, the Operating Partnership owned 2115 Linwood
Avenue, a 68,000 square-foot vacant office building located in Fort Lee, Bergen
County, New Jersey, which the Company is redeveloping for future lease-up and
operation.
 
OCCUPANCY
 
    The table below sets forth the year-end percentage of square feet leased in
the Operating Partnership's in-service Properties for the last five years:
 
<TABLE>
<CAPTION>
                                 PERCENTAGE OF
YEAR ENDED DECEMBER 31,     SQUARE FEET LEASED (%)
- -------------------------  -------------------------
<S>                        <C>
1998.............                       96.6
1997.............                       95.8
1996.............                       96.4
1995.............                       92.5
1994.............                       93.2
</TABLE>
 
                                       38
<PAGE>
SIGNIFICANT TENANTS
 
    The following table sets out a schedule of the Operating Partnership's 20
largest tenants, for wholly-owned properties as of December 31, 1998, based upon
annualized base rents:
<TABLE>
<CAPTION>
                                                                          PERCENTAGE OF                     PERCENTAGE OF
                                                        ANNUALIZED    OPERATING PARTNERSHIP    SQUARE         OPERATING
                                        NUMBER OF      BASE RENTAL       ANNUALIZED BASE        FEET         PARTNERSHIP
                                       PROPERTIES       REVENUE(1)     RENTAL REVENUE (%)      LEASED     LEASED SQ.FT. (%)
                                     ---------------  --------------  ---------------------  ----------  -------------------
<S>                                  <C>              <C>             <C>                    <C>         <C>
AT&T Corporation...................             5     $   13,825,038              3.2           971,501             3.8
Donaldson, Lufkin & Jenrette
  Securities Corp..................             1          7,943,706              1.8           420,672             1.7
AT&T Wireless Services.............             2          7,826,368              1.8           365,593             1.4
International Business Machines
  Corporation......................             6          7,639,928              1.8           396,912             1.6
Dow Jones Telerate Systems Inc.....             1          7,436,452              1.7           373,132             1.5
Nabisco Inc. ......................             3          5,921,014              1.4           321,735             1.3
Allstate Insurance Company.........             9          5,829,329              1.3           270,796             1.1
Prentice-Hall Inc. ................             1          5,794,893              1.3           474,801             1.9
Toys "R" Us--NJ, Inc. .............             1          5,342,672              1.2           242,518             1.0
American Institute of Certified
  Public Accountants (AICPA).......             1          4,981,357              1.1           249,768             1.0
CMP Media Inc......................             1          4,826,107              1.1           206,274             0.8
Board of Gov./Federal
  Reserve..........................             1          4,432,397              1.0           117,008             0.5
Winston & Strawn...................             1          3,765,833              0.9            94,283             0.4
KPMG Peat Marwick, LLP.............             2          3,510,412              0.8           161,760             0.6
Bankers Trust Harborside Inc.......             1          3,272,500              0.8           385,000             1.5
Morgan Stanley Dean Witter.........             1          3,188,532              0.7           179,131             0.7
Deloitte & Touche USA LLP..........             1          3,162,933              0.7           118,864             0.5
NTT Data Corporation...............             1          3,036,880              0.7           136,960             0.5
PNC Bank N.A. .....................             3          2,967,979              0.7           146,459             0.6
Cendant Operations Inc. ...........             1          2,854,614              0.7           135,934             0.5
                                                      --------------              ---        ----------             ---
Totals.............................                   $  107,558,944             24.7         5,769,101            22.9
                                                      --------------              ---        ----------             ---
                                                      --------------              ---        ----------             ---
 
<CAPTION>
                                        YEAR OF
                                         LEASE
                                      EXPIRATION
                                     -------------
<S>                                  <C>
AT&T Corporation...................         2009(2)
Donaldson, Lufkin & Jenrette
  Securities Corp..................         2009
AT&T Wireless Services.............         2007
International Business Machines
  Corporation......................         2007(3)
Dow Jones Telerate Systems Inc.....         2006(4)
Nabisco Inc. ......................         2000(5)
Allstate Insurance Company.........         2009(6)
Prentice-Hall Inc. ................         2014
Toys "R" Us--NJ, Inc. .............         2012
American Institute of Certified
  Public Accountants (AICPA).......         2012
CMP Media Inc......................         2014
Board of Gov./Federal
  Reserve..........................         2009(7)
Winston & Strawn...................         2003
KPMG Peat Marwick, LLP.............         2007(8)
Bankers Trust Harborside Inc.......         2003
Morgan Stanley Dean Witter.........         2008
Deloitte & Touche USA LLP..........         2000
NTT Data Corporation...............         2005
PNC Bank N.A. .....................         2003(9)
Cendant Operations Inc. ...........         2008
Totals.............................
</TABLE>
 
- ------------------------
 
(1) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998 annualized base rental revenue is based on the first
    month's billing times 12. As annualized base rental revenue is not derived
    from historical GAAP results, historical results for the year ended December
    31, 1998 may differ from those set forth above.
 
(2) 39,183 square feet expire February 2000; 66,268 square feet expire December
    2000; 3,950 square feet expire August 2002; 475,100 square feet expire
    January 2008; 387,000 square feet expire January 2009.
 
(3) 6,542 square feet expire April 1999; 29,157 square feet expire October 2000;
    85,000 square feet expire December 2000; 26,749 square feet expire January
    2002; 1,065 square feet expire November 2002; 248,399 square feet expire
    December 2007.
 
(4) 39,985 square feet expire June 1999; 283,260 square feet expire June 2000;
    4,700 square feet expire March 2001; 45,187 square feet expire June 2006.
 
(5) 21,357 square feet expire March 1999; 300,378 square feet expire December
    2000.
 
(6) 22,444 square feet expire July 2001; 70,517 square feet expire June 2002;
    71,030 square feet expire September 2002; 18,882 square feet expire April
    2003; 2,867 square feet expire January 2004; 36,305 square feet expire
    January 2005; 6,108 square feet expire August 2006; 31,143 square feet
    expire April 2008; 11,500 square feet expire January 2009.
 
(7) 94,719 square feet expire May 2005; 22,289 square feet expire June 2009.
 
(8) 104,556 square feet expire September 2002; 57,204 square feet expire July
    2007.
 
(9) 23,337 square feet expire October 1999; 107,320 square feet expire February
    2000; 15,802 square feet expire August 2003.
 
                                       39
<PAGE>
SCHEDULE OF LEASE EXPIRATIONS
 
    The following table sets forth a schedule of the lease expirations for the
total of the wholly-owned office, office/flex and industrial/warehouse
properties beginning January 1, 1999, assuming that none of the tenants
exercises renewal options:
 
<TABLE>
<CAPTION>
                                                                                              AVERAGE ANNUAL
                                                              PERCENTAGE OF                    RENT PER NET     PERCENTAGE OF
                                               NET RENTABLE   TOTAL LEASED      ANNUALIZED       RENTABLE        ANNUAL BASE
                                               AREA SUBJECT    SQUARE FEET     BASE RENTAL      SQUARE FOOT      RENT UNDER
                                  NUMBER OF    TO EXPIRING   REPRESENTED BY   REVENUE UNDER     REPRESENTED       EXPIRING
           YEAR OF                 LEASES         LEASES        EXPIRING         EXPIRING       BY EXPIRING        LEASES
          EXPIRATION            EXPIRING (1)   (SQ. FT.)(1)  LEASES (%) (2)     LEASES (3)        LEASES             (%)
- ------------------------------  -------------  ------------  ---------------  --------------  ---------------  ---------------
<S>                             <C>            <C>           <C>              <C>             <C>              <C>
1999..........................          561      2,248,282            8.8     $   39,556,954     $   17.59              9.1
2000..........................          500      4,207,612           16.5         71,008,335         16.88             16.4
2001..........................          485      2,881,985           11.3         46,854,713         16.26             10.8
2002..........................          374      3,188,941           12.5         55,613,195         17.44             12.8
2003..........................          360      3,747,096           14.7         63,456,710         16.93             14.6
2004..........................           98      1,518,445            6.0         24,623,059         16.22              5.7
2005..........................           72      1,253,643            4.9         24,969,295         19.92              5.8
2006..........................           39        747,973            2.9         14,129,895         18.89              3.3
2007..........................           32      1,161,650            4.6         22,198,687         19.11              5.1
2008..........................           32      1,416,405            5.6         22,077,078         15.59              5.1
2009..........................           18      1,104,856            4.3         19,393,870         17.55              4.5
2010 and thereafter...........           28      1,962,960            7.9         29,696,020         15.13              6.8
                                      -----    ------------         -----     --------------        ------            -----
Totals/Weighted Average.......        2,599     25,439,848          100.0(4)  $  433,577,811     $   17.04            100.0
                                      -----    ------------         -----     --------------        ------            -----
                                      -----    ------------         -----     --------------        ------            -----
</TABLE>
 
- ------------------------
 
(1) Includes office, office/flex, industrial/warehouse and stand-alone retail
    property tenants only. Excludes leases for amenity, retail, parking and
    month-to-month tenants. Some tenants have multiple leases.
 
(2) Excludes all space vacant as of December 31, 1998.
 
(3) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rental revenue is based on the
    first month's billing times 12. As annualized base rental revenue is not
    derived from historical GAAP results, historical results for the year ended
    December 31, 1998 may differ from those set forth above.
 
(4) Reconciliation to Operating Partnership's total net rentable square footage
    is as follows:
 
<TABLE>
<CAPTION>
                                                                                  SQUARE FEET   PERCENTAGE OF TOTAL
                                                                                  ------------  -------------------
<S>                                                                               <C>           <C>
Square footage leased to commercial tenants.....................................    25,439,848            95.1%
Square footage used for corporate offices, management offices, building use,
  retail tenants, food services, other anciliary service tenants and occupancy
  adjustments...................................................................       407,609             1.5
Square footage vacant...........................................................       919,526             3.4
                                                                                  ------------           -----
Total net rentable square footage (does not include residential, land lease,
  retail or not-in-service properties)..........................................    26,766,983           100.0%
                                                                                  ------------           -----
                                                                                  ------------           -----
</TABLE>
 
                                       40
<PAGE>
SCHEDULE OF LEASE EXPIRATIONS: OFFICE PROPERTIES
 
    The following table sets forth a schedule of the lease expirations for the
Office Properties beginning January 1, 1999, assuming that none of the tenants
exercises renewal options:
 
<TABLE>
<CAPTION>
                                                                                              AVERAGE ANNUAL
                                                              PERCENTAGE OF                    RENT PER NET     PERCENTAGE OF
                                               NET RENTABLE   TOTAL LEASED      ANNUALIZED       RENTABLE        ANNUAL BASE
                                               AREA SUBJECT    SQUARE FEET     BASE RENTAL      SQUARE FOOT      RENT UNDER
                                  NUMBER OF    TO EXPIRING   REPRESENTED BY   REVENUE UNDER     REPRESENTED       EXPIRING
YEAR OF                            LEASES         LEASES        EXPIRING         EXPIRING       BY EXPIRING        LEASES
EXPIRATION                      EXPIRING (1)   (SQ. FT.)(1)  LEASES (%) (2)     LEASES (3)        LEASES             (%)
- ------------------------------  -------------  ------------  ---------------  --------------  ---------------  ---------------
<S>                             <C>            <C>           <C>              <C>             <C>              <C>
1999..........................          479      1,768,091            8.3     $   34,655,892     $   19.60              8.9
2000..........................          419      3,515,089           16.5         63,697,337         18.12             16.4
2001..........................          400      2,254,109           10.6         39,609,773         17.57             10.2
2002..........................          299      2,509,326           11.7         48,215,382         19.21             12.4
2003..........................          302      3,172,457           14.9         57,869,143         18.24             14.9
2004..........................           78      1,220,194            5.7         21,135,616         17.32              5.4
2005..........................           57      1,062,346            5.0         22,897,475         21.55              5.9
2006..........................           32        554,481            2.6         10,838,389         19.55              2.8
2007..........................           27      1,049,969            4.9         20,625,703         19.64              5.3
2008..........................           30      1,314,545            6.2         21,612,570         16.44              5.6
2009..........................           15      1,057,956            5.0         18,757,850         17.73              4.8
2010 and thereafter...........           25      1,878,272            8.6         28,580,471         15.22              7.4
                                      -----    ------------         -----     --------------        ------            -----
Totals/Weighted Average.......        2,163     21,356,835          100.0     $  388,495,601     $   18.19            100.0
                                      -----    ------------         -----     --------------        ------            -----
                                      -----    ------------         -----     --------------        ------            -----
</TABLE>
 
- ------------------------
 
(1) Includes office tenants only. Excludes leases for amenity, retail, parking
    and month-to-month office tenants. Some tenants have multiple leases.
 
(2) Excludes all space vacant as of December 31, 1998.
 
(3) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rental revenue is based on the
    first month's billing times 12. As annualized base rental revenue is not
    derived from historical GAAP results, historical results for the year ended
    December 31, 1998 may differ from those set forth above.
 
                                       41
<PAGE>
SCHEDULE OF LEASE EXPIRATIONS: OFFICE/FLEX PROPERTIES
 
    The following table sets forth a schedule of the lease expirations for the
Office/flex Properties beginning January 1, 1999, assuming that none of the
tenants exercises renewal options:
 
<TABLE>
<CAPTION>
                                                                                                AVERAGE ANNUAL
                                                 NET RENTABLE   PERCENTAGE OF                    RENT PER NET
                                                 AREA SUBJECT   TOTAL LEASED      ANNUALIZED       RENTABLE       PERCENTAGE OF
                                                 TO EXPIRING     SQUARE FEET     BASE RENTAL      SQUARE FOOT      ANNUAL BASE
                                   NUMBER OF        LEASES     REPRESENTED BY   REVENUE UNDER     REPRESENTED      RENT UNDER
YEAR OF                             LEASES        (SQ. FT.)       EXPIRING         EXPIRING       BY EXPIRING       EXPIRING
EXPIRATION                       EXPIRING (1)        (1)       LEASES (%) (2)     LEASES (3)        LEASES           LEASES
- ------------------------------  ---------------  ------------  ---------------  --------------  ---------------  ---------------
<S>                             <C>              <C>           <C>              <C>             <C>              <C>
1999..........................            77         471,356           12.7      $  4,810,642      $   10.21             11.7
2000..........................            76         626,479           16.9         6,651,722          10.62             16.2
2001..........................            81         599,329           16.2         6,676,885          11.14             16.2
2002..........................            74         669,465           18.1         7,293,268          10.89             17.7
2003..........................            55         483,165           13.0         5,161,814          10.68             12.5
2004..........................            14         132,031            3.6         1,697,843          12.86              4.1
2005..........................            15         191,297            5.2         2,071,820          10.83              5.0
2006..........................             7         193,492            5.2         3,291,506          17.01              8.0
2007..........................             5         111,681            3.0         1,572,984          14.08              3.8
2008..........................             2         101,860            2.8           464,508           4.56              1.1
2009..........................             3          46,900            1.3           636,020          13.56              1.5
2010 and thereafter...........             2          76,688            2.0           850,549          11.09              2.2
                                         ---     ------------         -----     --------------        ------            -----
Totals/Weighted Average.......           411       3,703,743          100.0      $ 41,179,561      $   11.12            100.0
                                         ---     ------------         -----     --------------        ------            -----
                                         ---     ------------         -----     --------------        ------            -----
</TABLE>
 
- ------------------------
 
(1) Includes office/flex tenants only. Excludes leases for amenity, retail,
    parking and month-to-month office/flex tenants. Some tenants have multiple
    leases.
 
(2) Excludes all space vacant as of December 31, 1998.
 
(3) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rental revenue is based on the
    first month's billing times 12. As annualized base rental revenue is not
    derived from historical GAAP results, historical results for the year ended
    December 31, 1998 may differ from those set forth above.
 
                                       42
<PAGE>
SCHEDULE OF LEASE EXPIRATIONS: INDUSTRIAL/WAREHOUSE PROPERTIES
 
    The following table sets forth a schedule of the lease expirations for the
Industrial/Warehouse Properties beginning January 1, 1999, assuming that none of
the tenants exercises renewal options:
 
<TABLE>
<CAPTION>
                                                                                                  AVERAGE ANNUAL
                                                   NET RENTABLE   PERCENTAGE OF                    RENT PER NET     PERCENTAGE OF
                                                   AREA SUBJECT   TOTAL LEASED      ANNUALIZED       RENTABLE        ANNUAL BASE
                                                   TO EXPIRING     SQUARE FEET     BASE RENTAL      SQUARE FOOT      RENT UNDER
                                    NUMBER OF         LEASES     REPRESENTED BY   REVENUE UNDER     REPRESENTED       EXPIRING
YEAR OF                              LEASES         (SQ. FT.)       EXPIRING         EXPIRING       BY EXPIRING        LEASES
EXPIRATION                        EXPIRING (1)         (1)       LEASES (%) (2)     LEASES (3)        LEASES             (%)
- ------------------------------  -----------------  ------------  ---------------  --------------  ---------------  ---------------
<S>                             <C>                <C>           <C>              <C>             <C>              <C>
1999..........................              5            8,835            2.4      $     90,420      $   10.23              2.6
2000..........................              5           66,044           18.2           659,276           9.98             19.2
2001..........................              4           28,547            7.9           568,055          19.90             16.5
2002..........................              1           10,150            2.8           104,545          10.30              3.0
2003..........................              3           91,474           25.3           425,753           4.65             12.4
2004..........................              5          156,920           43.4         1,594,600          10.16             46.3
                                           --
                                                   ------------         -----     --------------        ------            -----
Totals/Weighted Average.......             23          361,970          100.0      $  3,442,649      $    9.51            100.0
                                           --
                                           --
                                                   ------------         -----     --------------        ------            -----
                                                   ------------         -----     --------------        ------            -----
</TABLE>
 
- ------------------------
 
(1) Includes industrial/warehouse tenants only. Excludes leases for amenity,
    retail, parking and month-to-month industrial/warehouse. Some tenants have
    multiple leases.
 
(2) Excludes all space vacant as of December 31, 1998.
 
(3) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rent revenue is based on the first
    month's billing times 12. As annualized base rental revenue is not derived
    from historical GAAP results, the historical results for the year ended
    December 31, 1998 may differ from those set forth above.
 
SCHEDULE OF LEASE EXPIRATIONS: STAND-ALONE RETAIL PROPERTIES
 
    The following table sets forth a schedule of the lease expirations for the
stand-alone retail properties beginning January 1, 1999, assuming that none of
the tenants exercises renewal options:
 
<TABLE>
<CAPTION>
                                                                                                   AVERAGE ANNUAL
                                                                   PERCENTAGE OF                    RENT PER NET     PERCENTAGE OF
                                                   NET RENTABLE    TOTAL LEASED      ANNUALIZED       RENTABLE        ANNUAL BASE
                                                   AREA SUBJECT     SQUARE FEET     BASE RENTAL      SQUARE FOOT      RENT UNDER
                                    NUMBER OF       TO EXPIRING   REPRESENTED BY   REVENUE UNDER     REPRESENTED       EXPIRING
YEAR OF                              LEASES           LEASES         EXPIRING         EXPIRING       BY EXPIRING        LEASES
EXPIRATION                        EXPIRING (1)     (SQ. FT.) (1)    LEASES (%)       LEASES (2)        LEASES             (%)
- ------------------------------  -----------------  -------------  ---------------  --------------  ---------------  ---------------
<S>                             <C>                <C>            <C>              <C>             <C>              <C>
2004..........................              1            9,300            53.8      $    195,000      $   20.97             42.4
2010..........................              1            8,000            46.2           265,000          33.13             57.6
                                            -
                                                        ------           -----     --------------        ------            -----
Totals/Weighted Average.......              2           17,300           100.0      $    460,000      $   26.59            100.0
                                            -
                                            -
                                                        ------           -----     --------------        ------            -----
                                                        ------           -----     --------------        ------            -----
</TABLE>
 
- ------------------------
 
(1) Includes stand-alone retail property tenants only.
 
(2) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rental revenue is based on the
    first month's billing times 12. As annualized base rental revenue is not
    derived from historical GAAP results, historical results for the year ended
    December 31, 1998 may differ from those set forth above.
 
                                       43
<PAGE>
INDUSTRY DIVERSIFICATION
 
    The following table lists the Operating Partnership's 30 largest industry
classifications (NAICS) for its Properties, based on annualized base rent:
 
<TABLE>
<CAPTION>
                                                                           PERCENTAGE                      PERCENTAGE
                                                       ANNUALIZED          OF COMPANY          SQUARE      OF COMPANY
                                                       BASE RENTAL       ANNUALIZED BASE        FEET         LEASED
INDUSTRY CLASSIFICATION (NAICS)                       REVENUE(1)(2)    RENTAL REVENUE (%)    LEASED (2)    SQ. FT. (%)
- ---------------------------------------------------  ---------------  ---------------------  -----------  -------------
<S>                                                  <C>              <C>                    <C>          <C>
Manufacturing......................................   $  42,053,778               9.7         2,659,489          10.5
Securities, Commodity Contracts & Other
  Financial........................................      39,884,148               9.2         2,161,142           8.5
Telecommunications.................................      32,094,189               7.4         2,086,370           8.2
Computer System Design Svcs........................      31,629,774               7.3         1,745,622           6.9
Insurance Carriers & Related Activities............      30,595,287               7.1         1,647,337           6.5
Legal Services.....................................      23,218,635               5.4         1,156,108           4.5
Credit Intermediation & Related Activities.........      23,143,458               5.3         1,447,412           5.7
Wholesale Trade....................................      20,339,326               4.7         1,428,770           5.6
Information Services...............................      19,299,991               4.5           956,470           3.8
Health Care & Social Assistance....................      16,709,332               3.9           940,970           3.7
Accounting/Tax Prep................................      14,730,504               3.4           712,492           2.8
Other Professional.................................      13,300,651               3.1           853,559           3.4
Retail Trade.......................................      11,750,806               2.7           706,635           2.8
Transportation.....................................      11,020,770               2.5           794,014           3.1
Arts, Entertainment & Recreation...................      10,242,449               2.4           784,346           3.1
Public Administration..............................       8,703,697               2.0           311,210           1.2
Publishing Industries..............................       8,600,074               2.0           429,573           1.7
Other Services (except Public Adminsitration)......       8,267,854               1.9           702,168           2.8
Advertising/Related Services.......................       6,906,212               1.6           356,097           1.4
Real Estate & Rental & Leasing.....................       6,624,316               1.5           381,873           1.5
Management of Companies & Finance..................       6,528,595               1.5           381,392           1.5
Data Processing Services...........................       6,126,999               1.4           286,533           1.1
Architectural/Engineering..........................       5,940,726               1.4           375,371           1.5
Scientific Research/Development....................       5,052,728               1.2           323,815           1.3
Monetary Authorities--Central Banks................       4,520,606               1.0           266,340           1.0
Management/Scientific..............................       4,370,192               1.0           228,168           0.9
Educational Services...............................       4,194,159               1.0           254,678           1.0
Construction.......................................       3,911,270               0.9           234,335           0.9
Admin & Support, Waste Mgt. & Remediation Svcs.....       3,395,234               0.8           260,519           1.0
Utilities..........................................       3,250,727               0.7           170,797           0.7
Other..............................................       7,171,324               1.5           396,243           1.4
                                                     ---------------            -----        -----------        -----
Totals.............................................   $ 433,577,811             100.0        25,439,848         100.0
                                                     ---------------            -----        -----------        -----
                                                     ---------------            -----        -----------        -----
</TABLE>
 
- ------------------------------
 
(1) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rental revenue is based on the
    first month's billing times 12. As annualized base rental revenue is not
    derived from historical GAAP results, the historical results for the year
    ended December 31, 1998 may differ from those set forth above.
 
(2) Includes office, office/flex, industrial/warehouse and stand-alone retail
    property tenants only. Excludes leases for amenity, retail, parking and
    month-to-month tenants. Some tenants have multiple leases.
 
(3) The Operating Partnership's tenants are classified according to the U.S.
    Government's new North American Industrial Classification System (NAICS)
    which is replacing the Standard Industrial Code (SIC) system.
 
                                       44
<PAGE>
MARKET DIVERSIFICATION
 
    The following table lists the Company's 20 largest markets, by Metropolitan
Statistical Area (MSA), based on annualized base rent:
 
<TABLE>
<CAPTION>
                                                                PERCENTAGE OF
                                              ANNUALIZED           COMPANY            TOTAL          PERCENTAGE
                                              BASE RENTAL      ANNUALIZED BASE     SQUARE FEET        OF TOTAL
MARKET (MSA)                                REVENUE (1)(2)   RENTAL REVENUE (%)        (2)         SQUARE FEET (%)
- ------------------------------------------  ---------------  -------------------  --------------  -----------------
<S>                                         <C>              <C>                  <C>             <C>
Bergen-Passaic, NJ........................   $  76,274,305             17.6           4,423,130            16.5
Newark, NJ (Essex-Morris Counties)........      69,282,808             16.0           3,671,218            13.7
New York, NY (Westchester County).........      65,948,814             15.2           4,308,220            16.1
Jersey City, NJ...........................      43,335,031             10.0           2,508,700             9.4
Philadelphia, PA-NJ.......................      35,472,514              8.2           2,458,458             9.2
Denver, CO................................      16,299,545              3.8           1,007,931             3.8
Trenton, NJ (Mercer County)...............      14,278,963              3.3             742,915             2.8
Dallas, TX................................      14,208,226              3.3             959,463             3.6
Washington, DC-MD-VA......................      12,607,712              2.9             447,000             1.7
Middlesex-Somerset-Hunterdon, NJ..........      11,180,747              2.6             659,041             2.5
San Antonio, TX...........................      11,086,913              2.6             940,302             3.5
Stamford-Norwalk, CT......................       8,387,008              1.9             461,250             1.7
Houston, TX...............................       8,020,341              1.8             700,008             2.6
Monmouth-Ocean, NJ........................       6,724,616              1.6             577,423             2.2
Nassau-Suffolk, NY........................       6,215,482              1.4             261,849             1.0
Phoenix-Mesa, AZ..........................       6,067,186              1.4             536,268             2.0
Austin-San Marcos, TX.....................       5,322,896              1.2             270,703             1.0
Boulder-Longmont, CO......................       3,450,304              0.8             270,421             1.0
San Francisco, CA.........................       3,376,861              0.8             267,446             1.0
Omaha, NE-IA..............................       2,968,193              0.7             319,535             1.2
Other.....................................      13,069,346              2.9             975,702             3.5
                                            ---------------           -----       --------------          -----
    Totals................................   $ 433,577,811            100.0          26,766,983           100.0
                                            ---------------           -----       --------------          -----
                                            ---------------           -----       --------------          -----
</TABLE>
 
- ------------------------
 
(1) Annualized base rental revenue is based on actual December 1998 billings
    times 12. For leases in effect at December 31, 1998 whose rent commences
    after December 31, 1998, annualized base rental revenue is based on the
    first month's billing times 12. As annualized base rental revenue is not
    derived from historical GAAP results, the historical results for the year
    ended December 31, 1998 may differ from those set forth above.
 
(2) Includes office, office/flex, industrial/warehouse and stand-alone retail
    property tenants only. Excludes leases for amenity, retail, parking and
    month-to-month tenants. Some tenants have multiple leases.
 
THE OPERATING PARTNERSHIP'S REAL ESTATE MARKETS
 
    The Operating Partnership's Properties are located primarily in the
Northeast, including a predominant presence in New Jersey, New York and
Pennsylvania. The following is a discussion of the markets within which
substantially all of the Operating Partnership's properties are located:
 
NORTHERN NEW JERSEY
 
    The Northern New Jersey market consists of Bergen, Essex, Hudson, Morris and
Passaic Counties. Northern New Jersey's five counties are part of the greater
New York metropolitan area, are less than a 45 minute drive from Manhattan, and
are widely regarded as major centers for corporate and international business.
The region has direct access to New York City by public transportation and
extensive road
 
                                       45
<PAGE>
networks. In addition to being home to the two largest cities in New Jersey,
Newark and Jersey City, Newark International Airport and the New York/New Jersey
Harbor are also located within the five-county boundary. Overall vacancy rates
have declined in the Northern New Jersey market for six out of the last seven
years as a direct result of an increase in leasing activity and net absorption
levels. Build-to-suit activity is present, and selective speculative
construction exists. The Operating Partnership owns and operates approximately
10.1 million square feet of office and office/flex space in Northern New Jersey.
 
CENTRAL NEW JERSEY
 
    The Central New Jersey market consists of Union, Somerset, Hunterdon,
Middlesex, Mercer and Monmouth Counties. Encompassing approximately 2,000 square
miles in six counties, Central New Jersey is notable for its proximity to major
highway arteries, including Interstates 78 and 287, Route 1, the Garden State
Parkway and the New Jersey Turnpike. This market continues to be a prime
location for Fortune 500 headquarters, research & development operations and
information businesses. Central New Jersey vacancy rates are decreasing while
average asking rents are increasing. This is, in part, attributable to the
increase in demand, measured by leasing activity, which rose predominantly due
to corporate expansions. The Operating Partnership owns and operates
approximately 2.7 million square feet of office and office/flex space in the
Central New Jersey counties of Union, Middlesex, Somerset, Mercer and Monmouth.
 
SUBURBAN PHILADELPHIA, PENNSYLVANIA
 
    The Suburban Philadelphia market consists of six counties in Pennsylvania on
the west side of the Delaware River and eight counties in New Jersey on the east
side of the Delaware River. The Pennsylvania counties consist of Bucks, Chester,
Delaware, Montgomery, Lehigh and Northampton Counties. These six counties
surround the City of Philadelphia, are home to many affluent communities, and
are regarded as major centers for corporate and international business. The
areas are served by an extensive highway network allowing easy access to
Philadelphia International Airport and the Port of Philadelphia. Over the last
few years the overall vacancy rate in this region has declined as a result of
strong leasing activity and moderate new construction. The New Jersey counties
consist of Burlington, Camden, Atlantic, Ocean, Gloucester, Salem, Cumberland
and Cape May Counties. This market has extensive geographic boundaries,
stretching from the Delaware River to the Atlantic Ocean and Atlantic City. This
region is mainly suburban and is home to many affluent communities, and Atlantic
City, one of the nation's largest centers for gaming/tourism. The Operating
Partnership owns and operates approximately 2.5 million square feet of office
and office/flex space and a 327-unit multi-family residential complex in
Suburban Philadelphia.
 
WESTCHESTER COUNTY, NEW YORK
 
    Westchester County, New York, is located immediately north of New York City
and is accessible to New York City by public transportation and through an
extensive road network. Westchester County has a population of almost 900,000
and is considered to be one of the most prestigious counties surrounding New
York City. The Operating Partnership owns and operates approximately 3.7 million
square feet of office and office/flex space, 387,400 square feet of
industrial/warehouse space, a 124-unit multi-family residential property, two
stand-alone retail properties, and two land leases in Westchester County, New
York.
 
ROCKLAND COUNTY, NEW YORK
 
    Rockland County, New York is located north of the New Jersey/New York border
directly adjacent to Bergen County. Rockland County has excellent highway access
to both New York City via Interstate 87 and to New Jersey via Interstate 287.
The Operating Partnership owns or has an interest in approximately 412,000
square feet of office and office/flex space in Rockland County.
 
                                       46
<PAGE>
FAIRFIELD COUNTY, CONNECTICUT
 
    Fairfield County, Connecticut is the county in Connecticut closest in
proximity with New York City. It has direct access to New York City via public
transportation and through an extensive road network. The county is home to 10
Fortune 500 headquarters and there has been a substantial decline in vacancy
during the past three years. The Operating Partnership owns and operates
approximately 606,000 square feet of office and office/flex space in Fairfield
County.
 
DALLAS-FORT WORTH, TEXAS
 
    The Dallas-Fort Worth market includes Dallas, Tarrant and portions of Collin
and Denton Counties. The market includes the central business districts of both
Dallas and Fort Worth and the suburban areas primarily to the north of those
cities. Dallas-Forth Worth International Airport is one of the busiest airports
in the nation and is important to the growth of the area. This area is home to
the headquarters of numerous Fortune 500 high-technology and telecommunications
companies. The Operating Partnership owns and operates approximately 1.0 million
square feet of office space in Dallas, Tarrant and Collin Counties.
 
HOUSTON, TEXAS
 
    The Houston market is comprised primarily of the city of Houston and its
surrounding suburbs. Houston is a major location of Fortune 500 companies'
headquarters. Houston is also a major port serving the southern portion of the
United States. The Operating Partnership owns and operates approximately 1.0
million square feet of office space in the Houston market.
 
SAN ANTONIO, TEXAS
 
    The San Antonio market consists primarily of Bexar County. San Antonio is
located at the cross roads of two major arteries, Interstate 35 and Interstate
10, and is a primary location of military facilities. San Antonio is the third
largest metropolitan area in Texas, behind Dallas and Houston. The Operating
Partnership owns and operates approximately 940,000 square feet of office space
in Bexar County.
 
PHOENIX, ARIZONA
 
    The Phoenix market is comprised primarily of the city of Phoenix and several
suburbs to the north and west, including Scottsdale. Phoenix is the focal point
of Arizona, in addition to being the state capital. It is the location of
numerous corporate headquarters and regional headquarter facilities. The Phoenix
market has been considered one of the most rapidly growing markets in the
county. The Operating Partnership owns and operates approximately 536,000 square
feet of office space in the Phoenix market.
 
DENVER, COLORADO
 
    The Denver Market is comprised primarily of the city of Denver and several
suburbs to the north, east, and south. Denver is the focal point of Colorado, in
addition to being the state capital. It is the location of numerous corporate
headquarters, with a large emergence of high-technology and telecommunication
industries. Its new airport could become a major transportation artery for the
near-western states. The Operating Partnership owns and operates approximately
1.3 million square feet of office space in the Denver market.
 
                                       47
<PAGE>
ITEM 3. LEGAL PROCEEDINGS
 
    There are no material pending legal proceedings, other than ordinary routine
litigation incidental to its business, to which the Operating Partnership is a
party or to which any of its Properties is subject.
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
    Not applicable.
 
PART II
 
ITEM 5. MARKET FOR REGISTRANT'S COMMON STOCK AND RELATED STOCKHOLDER MATTERS
 
    The Operating Partnership currently has no securities listed on any
securities exchange.
 
MARKET INFORMATION
 
    Not applicable
 
HOLDERS
 
    On March 1, 1999, the Operating Partnership had 123 owners of limited
partnership units.
 
RECENT SALES OF UNREGISTERED SECURITIES
 
    Reference is made to Notes 3 (1997 Transactions) and 11 of the Consolidated
Financial Statements contained in Item 14 of this Form 10-K for a description of
equity issuances of common and preferred units in the Operating Partnership (and
warrants exercisable for common units) which are redeemable, under certain
circumstances, for shares of Common Stock in the Corporation. All of such equity
issuances were issued to the holders directly by the Corporation without the use
of an underwriter or placement agent and without registration under the
Securities Act of 1933, as amended, pursuant to the private placement exemption
contained in Section 4(2) of such act.
 
DIVIDENDS AND DISTRIBUTIONS
 
    The distributions payable at December 31, 1998 represents distributions
payable to common unitholders of record on January 6, 1999 (66,353,322 units),
and preferred distributions to preferred unitholders (250,256 preferred units)
for the fourth quarter 1998. The fourth quarter 1998 common unit distribution of
$0.55 per common unit (pro-rated for units issued during the quarter), as well
as the fourth quarter preferred unit distribution of $16.875 per preferred unit,
were approved by the General Partner on December 15, 1998 and paid on January
26, 1999.
 
    The distributions payable at December 31, 1997 represent distributions
payable to common unitholders of record on January 5, 1998 (55,953,766 common
units) and preferred distributions to preferred unitholders (230,562 preferred
units) for the fourth quarter 1997. The fourth quarter 1997 common unit
distribution of $0.50 per common unit (pro-rated for units issued during the
quarter), as well as the pro-rated fourth quarter preferred unit distribution
aggregating $888, were approved by the General Partner on December 17, 1997 and
paid on January 16, 1998.
 
                                       48
<PAGE>
ITEM 6.  SELECTED FINANCIAL DATA
 
Mack-Cali Realty, L.P. and Subsidiaries
 
    The following table sets forth selected financial data on a consolidated
basis for the Operating Partnership and on a combined basis for the Cali Group.
The consolidated selected Operating, Balance sheet and Cash flow data of the
Operating Partnership as of December 31, 1998, 1997, 1996, 1995 and 1994, and
for the periods then ended, and the combined selected Operating and Cash flow
data of the Cali Group for the period ended August 30, 1994 have been derived
from financial statements audited by PricewaterhouseCoopers LLP, independent
accountants.
<TABLE>
<CAPTION>
                                                                        THE OPERATING PARTNERSHIP
                                                      --------------------------------------------------------------
                                                                                                         AUGUST 31,
                                                                  YEAR ENDED DECEMBER 31,                 1994 TO
                                                      ------------------------------------------------  DECEMBER 31,
                                                         1998         1997         1996        1995         1994
                                                      -----------  -----------  ----------  ----------  ------------
<S>                                                   <C>          <C>          <C>         <C>         <C>
OPERATING DATA
(in thousands, except per share data)
Total revenues......................................  $   493,699  $    23,135  $   13,180  $   11,060   $    4,039
Operating and other expenses........................  $   149,704  $     1,870  $      251  $       74   $       62
General and administrative..........................  $    25,572  $    15,061  $    5,637  $    3,343   $    1,081
Depreciation and amortization.......................  $    78,916  $       279  $       52  $       81   $       39
Interest expense....................................  $    88,043  $     9,670  $    4,672  $    1,175   $      301
Non-recurring merger-related charges................           --  $    46,519          --          --           --
Equity in net income of Majority-Owned
  Unconsolidated Property Partnerships..............           --  $    89,846  $   34,611  $   10,759   $    2,434
Income (loss) before extraordinary item.............  $   151,464  $    39,852  $   37,179  $   17,146   $    4,990
Basic earnings per unit--before extraordinary item..  $      2.13  $      0.22  $     1.76  $     1.23   $     0.38
Diluted earnings per unit--before extraordinary
  item..............................................  $      2.11  $      0.21  $     1.72  $     1.20   $     0.37
Distributions declared per common unit..............  $      2.10  $      1.90  $     1.75  $     1.66   $     0.54
Basic weighted average units outstanding............       63,438       43,356      21,171      13,986       13,302
Diluted weighted average units outstanding..........       63,893       44,409      21,651      14,254       13,325
 
<CAPTION>
                                                      THE CALI GROUP
                                                      ---------------
                                                        JANUARY 1,
                                                          1994 TO
                                                        AUGUST 30,
                                                           1994
                                                      ---------------
<S>                                                   <C>
OPERATING DATA
(in thousands, except per share data)
Total revenues......................................     $  33,637
Operating and other expenses........................     $  11,155
General and administrative..........................     $   2,228
Depreciation and amortization.......................     $   5,093
Interest expense....................................     $  13,969
Non-recurring merger-related charges................            --
Equity in net income of Majority-Owned
  Unconsolidated Property Partnerships..............            --
Income (loss) before extraordinary item.............     $    (110)
Basic earnings per unit--before extraordinary item..
Diluted earnings per unit--before extraordinary
  item..............................................
Distributions declared per common unit..............
Basic weighted average units outstanding............
Diluted weighted average units outstanding..........
</TABLE>
<TABLE>
<CAPTION>
                                                                        THE OPERATING PARTNERSHIP
                                                      --------------------------------------------------------------
                                                                               DECEMBER 31,
                                                      --------------------------------------------------------------
                                                         1998         1997         1996        1995         1994
                                                      -----------  -----------  ----------  ----------  ------------
<S>                                                   <C>          <C>          <C>         <C>         <C>
BALANCE SHEET DATA
(in thousands)
Rental property, before accumulated depreciation and
  amortization......................................  $ 3,467,799  $    65,592  $      712  $      570   $      463
Investments in Unconsolidated Majority-Owned
  Property Partnerships.............................           --  $ 1,821,614  $  488,585  $  182,724   $   57,010
Total assets........................................  $ 3,452,194  $ 1,901,174  $  776,220  $  268,918   $  148,849
Mortgages and loans payable.........................  $ 1,420,931  $   322,100  $   29,805  $   46,700   $    7,000
Total liabilities...................................  $ 1,526,974  $   364,489  $   47,877  $   55,027   $   11,635
Redeemable Partnership Units........................           --  $   522,812  $   83,052  $   61,045   $   44,830
Partners' capital...................................  $ 1,925,220  $ 1,013,873  $  645,291  $  152,846   $   92,384
 
<CAPTION>
<S>                                                   <C>
BALANCE SHEET DATA
(in thousands)
Rental property, before accumulated depreciation and
  amortization......................................
Investments in Unconsolidated Majority-Owned
  Property Partnerships.............................
Total assets........................................
Mortgages and loans payable.........................
Total liabilities...................................
Redeemable Partnership Units........................
Partners' capital...................................
</TABLE>
 
                                       49
<PAGE>
<TABLE>
<CAPTION>
                                                                        THE OPERATING PARTNERSHIP
                                                      --------------------------------------------------------------
                                                                                                         AUGUST 31,
                                                                  YEAR ENDED DECEMBER 31,                 1994 TO
                                                      ------------------------------------------------  DECEMBER 31,
                                                         1998         1997         1996        1995         1994
                                                      -----------  -----------  ----------  ----------  ------------
<S>                                                   <C>          <C>          <C>         <C>         <C>
OTHER DATA
  (in thousands)
Cash flows provided by operating activities.........  $   208,761  $    66,661  $   39,382  $   21,056   $    6,367
Cash flows (used in) provided by investing
  activities........................................  $  (749,067) $  (975,574) $ (305,891) $ (126,216)  $   (8,947)
Cash flows provided by (used in) financing
  activities........................................  $   543,411  $   706,368  $  470,893  $   99,863   $    8,974
Funds from operations (1), before distributions to
  preferred unitholders.............................  $   216,949  $   111,752  $   45,220  $   27,397   $    8,404
Funds from operations (1), after distributions to
  preferred unitholders.............................  $   200,636  $   110,864  $   45,220  $   27,397   $    8,404
 
<CAPTION>
                                                      THE CALI GROUP
                                                      ---------------
                                                        JANUARY 1,
                                                          1994 TO
                                                        AUGUST 30,
                                                           1994
                                                      ---------------
<S>                                                   <C>
OTHER DATA
  (in thousands)
Cash flows provided by operating activities.........     $   6,328
Cash flows (used in) provided by investing
  activities........................................     $   1,975
Cash flows provided by (used in) financing
  activities........................................     $  (1,038)
Funds from operations (1), before distributions to
  preferred unitholders.............................
Funds from operations (1), after distributions to
  preferred unitholders.............................
</TABLE>
 
- ------------------------------
 
(1) The Operating Partnership considers funds from operations (after adjustment
    for straight-lining of rents) one measure of REIT performance. Funds from
    operations ("FFO") is defined as net income (loss) before distribution to
    preferred unitholders computed in accordance with generally accepted
    accounting principles ("GAAP"), excluding gains (or losses) from debt
    restructuring, other extraordinary and significant non-recurring items and
    sales of property, plus real estate-related depreciation and amortization.
    Funds from operations should not be considered as an alternative for net
    income as an indication of the Operating Parntership's performance or to
    cash flows as a measure of liquidity. Funds from operations presented herein
    is not necessarily comparable to funds from operations presented by other
    real estate companies due to the fact that not all real estate companies use
    the same definition. However, the Operating Partnership's funds from
    operations is comparable to the funds from operations of real estate
    companies that use the current definition of the National Association of
    Real Estate Investment Trusts ("NAREIT"), after the adjustment for
    straight-lining of rents. Refer to "Management's Discussion and Analysis of
    Financial Condition and Results of Operations," contained elsewhere in this
    Report, for the calculation of FFO for the periods presented.
 
                                       50
<PAGE>
                ITEM 7: MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
    The following discussion should be read in conjunction with the Consolidated
Financial Statements of Mack-Cali Realty, L.P. and subsidiaries and the notes
thereto. Certain defined terms used herein have the meaning ascribed to them in
the Consolidated Financial Statements.
 
    The following comparisons for the year ended December 31, 1998 ("1998"), as
compared to the year ended December 31, 1997 ("1997") and for 1997, as compared
to the year ended December 31, 1996 ("1996") make reference to the following:
(i) the effect of the "Same-Store Properties," which represents all properties
owned by the Operating Partnership at December 31, 1996 (for the 1998 versus
1997 comparison), and which represents all properties owned by the Operating
Partnership at December 31, 1995 (for the 1997 versus 1996 comparison), (ii) the
effect of the acquisition of the RM Properties on January 31, 1997, (iii) the
effect of the acquisition of the Mack Properties on December 11, 1997, and (iv)
the effect of the "Acquired Properties," which represents all properties
acquired by the Operating Partneship from January 1, 1997 through December 31,
1998, excluding RM Properties and Mack Properties (for the 1998 versus 1997
comparison), and which represents all properties acquired by the Operating
Partnership from January 1, 1996 through December 31, 1997, excluding RM
Properties and Mack Properties (for the 1997 versus 1996 comparison) and (v) the
effect of the "Disposition" which refers to the Operating Partnership's sale of
its Essex Road Property on March 20, 1996.
 
    For 1998, the results of operations of the Operating Partnership and the
Property Partnerships are included in the Operating Partnership on a
consolidated basis. Prior to January 1, 1998, such results of operations were
accounted for by the Operating Partnership under the equity method of accounting
and reflected in its consolidated financial statements as Equity in Net Income
of Unconsolidated Majority-Owned Property Partnerships. Accordingly, to present
meaningful comparisons, the following discussion compares such consolidated 1998
results to the 1997 results of the Operating Partnership and Property
Partnerships on a combined basis and the 1997 results of the Operating
Partnership and Property Partnerships on a combined basis to the 1996 results of
the Operating Partnership and Property Partnerships on a combined basis (such
combining financial schedules are presented in the tables below).
 
                                       51
<PAGE>
 
<TABLE>
<CAPTION>
                                                                          YEAR ENDED DECEMBER 31, 1997
                                                               ---------------------------------------------------
                                                                MACK-CALI    MACK-CALI
                                                                 REALTY,      PROPERTY
                                                                  L.P.      PARTNERSHIPS  ELIMINATIONS   COMBINED
                                                               -----------  ------------  ------------  ----------
<S>                                                            <C>          <C>           <C>           <C>
                                                                                 (IN THOUSANDS)
REVENUES
Base rents...................................................   $     524    $  205,903    $     (212)  $  206,215
Escalations and recoveries from tenants......................          84        31,060           (14)      31,130
Management fees from Property Partnerships...................       6,532            --        (6,532)          --
Parking and other............................................       2,268         4,642            --        6,910
Interest income..............................................      13,727             6        (8,187)       5,546
                                                               -----------  ------------  ------------  ----------
  Total revenues.............................................      23,135       241,611       (14,945)     249,801
                                                               -----------  ------------  ------------  ----------
EXPENSES
Real estate taxes............................................          68        25,924            --       25,992
Utilities....................................................          57        18,203           (14)      18,246
Operating services...........................................       1,745        29,167            --       30,912
Management fees to Operating Partnership.....................          --         6,532        (6,532)          --
General and administrative...................................      15,061         1,013          (212)      15,862
Depreciation and amortization................................         279        36,546            --       36,825
Interest expense.............................................       9,670        34,380        (4,972)      39,078
Non-recurring merger-related charges.........................      46,519            --            --       46,519
                                                               -----------  ------------  ------------  ----------
  Total expenses.............................................      73,399       151,765       (11,730)     213,434
                                                               -----------  ------------  ------------  ----------
(Loss) income before equity in net income of unconsolidated
  majority-owned Property Partnerships and extraordinary
  item.......................................................     (50,264)       89,846        (3,215)      36,367
Equity in net income of unconsolidated majority-owned
  Property Partnerships......................................      89,846            --       (89,846)          --
                                                               -----------  ------------  ------------  ----------
Income (loss) before extraordinary item......................      39,582        89,846       (93,061)      36,367
Extraordinary item--loss on early retirement of debt.........      (7,200)       (6,746)        9,961       (3,985)
                                                               -----------  ------------  ------------  ----------
Net income...................................................      32,382        83,100       (83,100)      32,382
Preferred unit distribution..................................        (888)           --            --         (888)
Beneficial conversion feature................................     (29,361)           --            --      (29,361)
                                                               -----------  ------------  ------------  ----------
Net income (loss) available to common unitholders............   $   2,133    $   83,100    $  (83,100)  $    2,133
                                                               -----------  ------------  ------------  ----------
                                                               -----------  ------------  ------------  ----------
</TABLE>
 
                                       52
<PAGE>
 
<TABLE>
<CAPTION>
                                                                          YEAR ENDED DECEMBER 31, 1996
                                                               ---------------------------------------------------
                                                                MACK-CALI    MACK-CALI
                                                                 REALTY,      PROPERTY
                                                                  L.P.      PARTNERSHIPS  ELIMINATIONS   COMBINED
                                                               -----------  ------------  ------------  ----------
<S>                                                            <C>          <C>           <C>           <C>
                                                                                 (IN THOUSANDS)
REVENUES
Base rents...................................................   $      --    $   77,134    $     (212)  $   76,922
Escalations and recoveries from tenants......................          --        14,443           (14)      14,429
Management fees from Property Partnerships...................       2,862            --        (2,862)          --
Parking and other............................................         285         1,919            --        2,204
Interest income..............................................      10,033             3        (8,119)       1,917
                                                               -----------  ------------  ------------  ----------
  Total revenues.............................................      13,180        93,499       (11,207)      95,472
                                                               -----------  ------------  ------------  ----------
EXPENSES
Real estate taxes............................................          --         9,395            --        9,395
Utilities....................................................          14         8,138           (14)       8,138
Operating services...........................................         237        11,892            --       12,129
Management fees to Operating Partnership.....................          --         2,862        (2,862)          --
General and administrative...................................       5,637           375          (212)       5,800
Depreciation and amortization................................          52        14,679            --       14,731
Interest expense.............................................       4,672        17,205        (8,119)      13,758
                                                               -----------  ------------  ------------  ----------
  Total expenses.............................................      10,612        64,546       (11,207)      63,951
                                                               -----------  ------------  ------------  ----------
Income before equity in net income of unconsolidated
  majority-owned Property Partnerships, gain on sale of
  rental property and extraordinary item.....................       2,568        28,953            --       31,521
Equity in net income of unconsolidated majority-owned
  Property Partnerships......................................      34,611            --       (34,611)          --
                                                               -----------  ------------  ------------  ----------
Income (loss) before gain on sale of rental property and
  extraordinary item.........................................      37,179        28,953       (34,611)      31,521
Gain on sale of rental property..............................          --         5,658            --        5,658
                                                               -----------  ------------  ------------  ----------
Income (loss) before extraordinary item......................      37,179        34,611       (34,611)      37,179
Extraordinary item--loss on early retirement of debt.........        (561)         (287)          287         (561)
                                                               -----------  ------------  ------------  ----------
Net income (loss) available to common unitholders............   $  36,618    $   34,324    $  (34,324)  $   36,618
                                                               -----------  ------------  ------------  ----------
                                                               -----------  ------------  ------------  ----------
</TABLE>
 
     YEAR ENDED DECEMBER 31, 1998 COMPARED TO YEAR ENDED DECEMBER 31, 1997
 
    Total revenues increased by $243.9 million, or 97.6 percent, for 1998 over
1997. Base rents increased by $221.3 million, or 107.3 percent, of which an
increase of $138.9 million, or 67.3 percent, was due to the Mack Properties, an
increase of $75.1 million, or 36.4 percent, was attributable to the Acquired
Properties, an increase of $5.5 million, or 2.7 percent, was due to the RM
Properties, and an increase of $1.8 million, or 0.9 percent, was due to
occupancy and rental rate changes at the Same-Store Properties. Escalations and
recoveries from tenants increased by $20.8 million, or 67.0 percent, of which an
increase of $11.1 million, or 35.9 percent, was due to the Mack Properties, an
increase of $9.1 million, or 29.1 percent, was attributable to the Acquired
Properties, an increase of $0.4 million, or 1.3 percent, at the Same-Store
Properties, and an increase of $0.2 million, or 0.7 percent, due to the RM
Properties. Parking and other income increased by $3.8 million, or 55.0 percent,
of which $3.3 million, or 48.3 percent, is attributable to the Same-Store
Properties, and an increase of $0.5 million, or 6.7 percent, due to the RM
Properties. Interest income decreased by $3.1 million, or 56.3 percent, due
primarily to investment of the funds held from the Operating Partnership's
October 1997 common stock offering in 1997. Additionally, the Operating
Partnership recognized $1.1 million from equity in earnings of unconsolidated
joint ventures in 1998.
 
                                       53
<PAGE>
    Total expenses for 1998 increased by $128.8 million, or 60.3 percent, as
compared to 1997. Real estate taxes increased by $22.3 million, or 85.8 percent,
for 1998 over 1997, of which an increase of $11.7 million, or 44.9 percent, was
due to the Mack Properties, an increase of $8.8 million, or 33.8 percent, was
attributable to the Acquired Properties, an increase of $1.0 million, or 3.9
percent, due to the RM Properties, and an increase of $0.8 million, or 3.2
percent, attributable to the Same-Store Properties. Additionally, operating
services increased by $32.1 million, or 103.7 percent, and utilities increased
by $20.2 million, or 110.7 percent, for 1998 over 1997. The aggregate increase
in operating services and utilities of $52.3 million, or 106.3 percent, consists
of an increase of $33.9 million, or 69.0 percent, due to the Mack Properties, an
increase of $18.3 million, or 37.2 percent, attributable to the Acquired
Properties and an increase of $0.9 million, or 1.8 percent, due to the RM
Properties, offset by a decrease of $0.8 million, or 1.7 percent, attributable
to the Same-Store Properties. General and administrative expense increased $9.7
million, or 61.2 percent, of which $6.6 million, or 41.4 percent, is due
primarily to an increase in payroll and related costs as a result of the
Operating Partnership's expansion in late 1997 and 1998 and $3.1 million, or
19.8 percent, is attributable to additional costs related to the Mack
Properties. Depreciation and amortization increased by $42.1 million, or 114.3
percent, for 1998 over 1997, of which $22.6 million, or 61.1 percent, was due to
the Mack Properties, an increase of $16.2 million, or 44.0 percent, relates to
depreciation on the Acquired Properties, an increase of $1.8 million, or 5.0
percent, due to the RM Properties, and an increase of $1.5 million, or 4.2
percent, due to the Same-Store Properties. Interest expense increased by $48.9
million, or 125.3 percent, for 1998 over 1997, of which $23.4 million, or 60.0
percent, was due to assumed mortgages from the Mack Properties, an increase of
$23.2 million, or 59.5 percent, due to net additional drawings from the
Operating Partnership's credit facilities as a result of Operating Partnership
acquisitions and the $200 million Prudential Term Loan obtained in December
1997, as well as changes in LIBOR, $1.2 million, or 3.0 percent, was
attributable to assumed mortgages on Acquired Properties, and an increase of
$1.1 million, or 2.8 percent, due to the TIAA Mortgage. Non-recurring
merger-related charges of $46.5 million were incurred in 1997, as a result of
the Mack Transaction.
 
    Net income available to common unitholders increased by $130.4 million for
1998, from $2.1 million in 1997 to $132.5 million in 1998. The increase was due
to the factors discussed above including the effect of the beneficial conversion
of $29.4 million in 1997, preferred dividends of $0.9 million in 1997, and an
extraordinary item of $4.0 million, related to early retirement of debt in 1997,
offset by preferred dividends of $16.3 million in 1998 and an extraordinary item
of $2.7 million, related to early retirement of debt in 1998.
 
     YEAR ENDED DECEMBER 31, 1997 COMPARED TO YEAR ENDED DECEMBER 31, 1996
 
    Total revenues increased $154.3 million, or 161.6 percent, for 1997 over
1996. Base rents increased $129.3 million, or 168.1 percent, of which an
increase of $61.4 million, or 79.7 percent, was attributable to the Acquired
Properties, an increase of $58.4 million, or 75.9 percent, due to the RM
Properties, an increase of $8.0 million, or 10.4 percent, due to the Mack
Properties and an increase of $1.8 million, or 2.4 percent, due to occupancy and
rental rate changes at the Same-Store Properties, offset by a decrease of $0.3
million, or 0.3 percent, due to the Disposition. Escalations and recoveries
increased $16.7 million, or 115.7 percent, of which an increase of $11.2
million, or 77.4 percent, was attributable to the Acquired Properties, an
increase of $4.9 million, or 34.2 percent, due to the RM Properties, an increase
of $0.5 million, or 3.7 percent, due to the Mack Properties, and an increase of
$0.1 million, or 0.4 percent, due to occupancy changes at the Same-Store
Properties. Parking and other income increased $4.7 million, or 213.5 percent,
of which $4.0 million, or 182.1 percent, was attributable to the RM Properties
and $0.8 million, or 37.6 percent, was attributable to the Acquired Properties,
offset by a decrease of $0.1 million, or 6.2 percent, due to the Same-Store
Properties. Interest income increased $3.6 million, or 189.3 percent, due
primarily to investment of the funds held from the Operating Partnership's
October 1997 common stock offering.
 
                                       54
<PAGE>
    Total expenses for 1997 increased $149.4 million, or 233.7 percent, as
compared to 1996. Real estate taxes increased $16.6 million, or 176.7 percent,
for 1997 over 1996, of which an increase of $6.6 million, or 69.6 percent, was
attributable to the Acquired Properties, an increase of $9.0 million, or 95.9
percent, due to the RM Properties, an increase of $0.6 million, or 6.6 percent,
due to the Mack Properties, and an increase of $0.5 million, or 5.1 percent,
attributable to the Same-Store Properties, offset by a decrease of $0.1 million,
or 0.5 percent, due to the Disposition. Additionally, operating services
increased $18.7 million, or 154.9 percent, and utilities increased $10.1
million, or 124.2 percent, for 1997 over 1996. The aggregate increase in
operating services and utilities of $28.8 million, or 142.6 percent, consists of
$15.5 million, or 76.7 percent, attributable to the Acquired Properties, an
increase of $12.9 million, or 63.8 percent, due to the RM Properties, and an
increase of $1.7 million, or 8.2 percent, due to the Mack Properties, offset by
a decrease of $1.1 million, or 5.3 percent, attributable to the Same-Store
Properties and a decrease of $0.2 million, or 0.8 percent, due to the
Disposition. General and administrative expense increased $10.1 million, or
173.5 percent, of which $7.1 million, or 121.1 percent, is due primarily to an
increase in payroll and related costs as a result of the Operating Partnership's
expansion in late 1996 and 1997 and $3.0 million, or 52.4 percent, is
attributable to additional costs related to the RM Properties. Depreciation and
amortization increased $22.1 million, or 150.0 percent, for 1997 over 1996, of
which $10.4 million, or 70.4 percent, relates to depreciation on the Acquired
Properties, an increase of $10.0 million, or 67.7 percent, attributable to the
RM Properties, an increase of $1.0 million, or 6.6 percent, due to the Mack
Properties, and an increase of $0.8 million, or 5.8 percent, due to the
Same-Store Properties, offset by a decrease of $0.1 million, or 0.5 percent, due
to the Disposition. Interest expense increased $25.3 million, or 184.0 percent,
for 1997 over 1996, of which $12.2 million, or 88.6 percent, was attributable to
the TIAA Mortgage, $9.1 million, or 66.5 percent, due to the Harborside
Mortgages, an increase of $1.4 million, or 9.9 percent, due to assumed mortgages
from the Mack Properties, and an increase of $8.3 million, or 60.1 percent, due
to net additional drawings from the Operating Partnership's credit facilities as
a result of Operating Partnership acquisitions and the $200 million Prudential
Term Loan obtained in December 1997, as well as changes in LIBOR, offset by a
decrease of $5.7 million, or 41.1 percent, due to the August 1997 prepayment of
the Mortgage Financing. Non-recurring merger-related charges of $46.5 million
were incurred in 1997, as a result of the Mack Transaction.
 
    Net income available to common unitholders decreased by $34.5 million for
1997, from $36.6 million in 1996 to $2.1 million in 1997. The decrease was due
to the factors discussed above including the effect of the beneficial conversion
feature of $29.4 million and distributions to preferred unitholders of $0.9
million in 1997, a gain on the sale of the Disposition property of $5.7 million
in 1996 and the recognition in 1997 of an extraordinary loss of $4.0 million,
offset by the recognition in 1996 of an extraordinary loss of $0.6 million.
 
LIQUIDITY AND CAPITAL RESOURCES
 
STATEMENT OF CASH FLOWS
 
    During the year ended December 31, 1998, the Operating Partnership generated
$208.8 million in cash flows from operating activities, and together with $1.5
billion in borrowings from the Operating Partnership's credit facilities and
funds from additional mortgage debt, $288.4 million in net proceeds from
Mack-Cali Realty Corporation's ("Corporation") common stock offerings, $20.0
million received from a repayment of a mortgage note receivable, $5.5 million in
proceeds from stock options exercised, $1.7 million in distributions received
from unconsolidated joint ventures, and $0.8 million in restricted cash, used an
aggregate of approximately $2.0 billion to acquire properties, land parcels and
pay for other tenant improvements and building improvements totaling $692.8
million, repay outstanding borrowings on its credit facilities and other
mortgage debt of $1.1 billion, pay quarterly distributions of $139.8 million,
invest $58.8 million in unconsolidated joint ventures, repurchase 854,700 shares
of the Corporation's outstanding
 
                                       55
<PAGE>
common stock for $25.1 million, provide $20.0 million for a mortgage note
receivable, pay financing costs of $10.1 million, and redeem 82,880 common units
for $3.2 million.
 
CAPITALIZATION
 
    During 1998, the Corporation issued approximately 8.0 million shares in
several offerings and sales of its common stock (at a weighted average price of
$37.38 per share) raising aggregate net proceeds of approximately $288.4
million. Additionally, during 1998, in conjunction with the funding of several
of its property acquisitions as well as redemption of certain of the contingent
units issued in the Mack Transaction, the Operating Partnership issued a total
of approximately 3.1 million Common Units and 19,694 Preferred Units
(convertible into 568,369 Common Units), with a total value of approximately
$126.3 million at time of issuance.
 
    In August 1998, the Board of Directors of the Corporation authorized a share
repurchase program under which the Corporation was permitted to purchase up to
$100.0 million of the Corporation's outstanding common stock. Purchases could be
made from time to time in open market transactions at prevailing prices or
through privately negotiated transactions. Subsequently, the Corporation
purchased, for constructive retirement, 854,700 shares of its outstanding common
stock for an aggregate cost of approximately $25.1 million. Concurrent with
these purchases, the Corporation sold to the Operating Partnership 854,700
Common Units for approximately $25.1 million.
 
    At December 31, 1998, the Operating Partnership's total mortgages and loans
payable of $1.4 billion (weighted average interest rate of 6.93 percent) was
comprised of $751.8 million of credit line borrowings and other variable rate
mortgage debt (average rate of 6.61 percent), fixed rate mortgage debt of $663.0
million (average rate of 7.32 percent), and a Contingent Obligation of $6.2
million. The Operating Partnership's total mortgage debt of approximately $743.2
million was comprised of $663.0 million in fixed rate debt and $80.2 million of
variable rate mortgage debt with a weighted average annual interest rate of 65
basis points over LIBOR.
 
    At year-end, the Operating Partnership had outstanding borrowings of $671.6
million under its revolving credit facilities (with aggregate borrowing capacity
of $1.1 billion). The outstanding borrowings were comprised of $671.6 million
from its unsecured $1.0 billion facility ("1998 Unsecured Facility"), with no
outstanding borrowings on its $100.0 million credit facility with Prudential
Securities Corp. ("Prudential Facility"). The 1998 Unsecured Facility, with 28
lender banks, carries an interest rate of 90 basis points over LIBOR and matures
in April 2001. The Prudential Facility carries an interest rate of 110 basis
points over LIBOR and matures in December 1999.
 
    The terms of the 1998 Unsecured Facility include certain restrictions and
covenants which limit, among other things, the payment of dividends (as
discussed below), the incurrence of additional indebtedness, the incurrence of
liens and the disposition of assets, and which require compliance with financial
ratios relating to the maximum leverage ratio, the maximum amount of secured
indebtedness, the minimum amount of tangible net worth, the minimum amount of
debt service coverage, the minimum amount of fixed charge coverage, the maximum
amount of unsecured indebtedness, the minimum amount of unencumbered property
debt service coverage and certain investment limitations. The dividend
restriction referred to above provides that, except to enable the Corporation to
continue to qualify as a REIT under the Code, the Corporation will not during
any four consecutive fiscal quarters make distributions with respect to common
stock or other equity interests in an aggregate amount in excess of 90 percent
of funds from operations for such period, subject to certain other adjustments.
The 1998 Unsecured Facility also requires a 17.5 basis point fee on the unused
balance payable quarterly in arrears.
 
    The Operating Partnership has three investment grade credit ratings. Duff &
Phelps Credit Rating Co. ("DCR") and Standard & Poors Rating Services ("S&P")
have each assigned their BBB rating to prospective senior unsecured debt
offerings of the Operating Partnership. DCR and S&P have also assigned their
BBB- rating to prospective preferred stock offerings of the Corporation. Moody's
Investors
 
                                       56
<PAGE>
Service has assigned its Baa3 rating to prospective senior unsecured debt of the
Operating Partnership and its Ba1 rating to prospective preferred stock
offerings of the Corporation.
 
    In May 1995, the Operating Partnership entered into an interest rate swap
agreement with a commercial bank. The swap agreement fixes the Operating
Partnership's one-month LIBOR base for 6.285 percent per annum on a notional
amount of $24.0 million through August 1999.
 
    In October 1998, the Operating Partnership entered into a forward treasury
rate lock agreement with a commercial bank. The agreement locked an interest
rate of 4.089 percent per annum for the three-year U.S. Treasury Note effective
November 4, 1999, on a notional amount of $50.0 million. The agreement will be
used to fix the Index Rate on $50.0 million of the Harborside Mortgages, for
which the Operating Partnership's interest rate re-sets for three years
beginning November 4, 1999 to the interpolated three-year U.S. Treasury Note
plus 110 basis points (see Note 9 to the Financial Statements--"Harborside
Mortgages").
 
    As of December 31, 1998, the Operating Partnership had 167 unencumbered
properties, totaling 16.5 million square feet, representing 61.4 percent of the
Operating Partnership's total portfolio on a square footage basis. An additional
55 properties, aggregating 5.4 million square feet (20.3 percent of Operating
Partnership's portfolio) are currently encumbered by $335.3 million of mortgage
debt, which may be converted to unsecured debt at the Operating Partnership's
option. The Operating Partnership is currently reviewing its options to convert
any of the mortgage debt to unsecured debt.
 
    The Operating Partnership has an effective shelf registration statement with
the SEC for an aggregate of $2.0 billion in debt securities, preferred stock and
preferred stock represented by depositary shares. The Operating Partnership
presently has not issued any securities under these registration statements.
 
    Historically, rental revenue has been the principal source of funds to pay
operating expenses, debt service and capital expenditures, excluding
non-recurring capital expenditures. Management believes that the Operating
Partnership will have access to the capital resources necessary to expand and
develop its business. To the extent that the Operating Partnership's cash flow
from operating activities is insufficient to finance its non-recurring capital
expenditures such as property acquisition costs and other capital expenditures,
the Operating Partnership expects to finance such activities through borrowings
under its credit facilities and other debt and equity financing.
 
    The Operating Partnership expects to meet its short-term liquidity
requirements generally through its working capital and net cash provided by
operating activities, along with the 1998 Unsecured Facility and the Prudential
Facility. The Operating Partnership is frequently examining potential property
acquisitions and, at any given time, one or more of such acquisitions may be
under consideration. Accordingly, the ability to fund property acquisitions is a
major part of the Operating Partnership's financing requirements. The Operating
Partnership expects to meet its financing requirements through funds generated
from operating activities, long-term or short term borrowings (including draws
on the Operating Partnership's credit facilities) and the issuance of debt
securities or additional equity securities. In addition, the Operating
Partnership anticipates utilizing the 1998 Unsecured Facility and the Prudential
Facility primarily to fund property acquisitions.
 
    The Operating Partnership's total debt at December 31, 1998 had a weighted
average term to maturity of approximately 4.2 years. The Operating Partnership
expects to increase the average term to maturity on its debt in 1999. The
Operating Partnership has commitments to refinance $35.9 million of its
mortgages which mature in the first quarter of 1999 with $45.5 million of new
mortgage debt. The Operating Partnership does not intend to reserve funds to
retire its TIAA Mortgage, Harborside Mortgages, $150.0 Million Prudential
Mortgage Loan, its other property mortgages or other long-term mortgages and
loans payable upon maturity. Instead, the Operating Partnership will seek to
refinance such debt at maturity or retire such debt through the issuance of
additional debt or equity instruments. The Operating Partnership is considering
refinancing a portion of its outstanding borrowings from the 1998 Unsecured
Facility. The
 
                                       57
<PAGE>
Operating Partnership is reviewing various refinancing options, including the
issuance of unsecured public debt, preferred stock, and/or obtaining additional
mortgage debt, some or all of which may be completed during 1999. The Operating
Partnership anticipates that its available cash and cash equivalents and cash
flows from operating activities, together with cash available from borrowings
and other sources, will be adequate to meet the Operating Partnership's capital
and liquidity needs both in the short and long-term. However, if these sources
of funds are insufficient or unavailable, the Operating Partnership's ability to
make the expected distribution discussed below may be adversely affected.
 
    To maintain its qualification as a REIT, the Corporation must make annual
distributions to its stockholders of at least 95 percent of its REIT taxable
income, determined without regard to the dividends paid deduction and by
excluding net capital gains. The Corporation currently relies on the
distributions it receives from the Operating Partnership to make its
distributions to its stockholders. Moreover, the Operating Partnership intends
to continue to make regular quarterly distributions to its unitholders which,
based upon current policy, in the aggregate would equal approximately $128.2
million on an annualized basis. However, any such distribution would only be
paid out of available cash after meeting operating requirements, scheduled debt
service on mortgages and loans payable, and preferred unit distributions.
 
FUNDS FROM OPERATIONS
 
    The Operating Partnership considers funds from operations ("FFO"), after
adjustment for straight-lining of rents, one measure of REIT performance. Funds
from operations is defined as net income (loss) before distribution to preferred
unitholders, computed in accordance with generally accepted accounting
principles ("GAAP"), excluding gains (or losses) from debt restructuring, other
extraordinary and significant non-recurring items, and sales of property, plus
real estate-related depreciation and amortization. Funds from operations should
not be considered as an alternative to net income as an indication of the
Operating Partnership's performance or to cash flows as a measure of liquidity.
Funds from operations presented herein is not necessarily comparable to funds
from operations presented by other real estate companies due to the fact that
not all real estate companies use the same definition. However, the Operating
Partnership's funds from operations is comparable to the funds from operations
of real estate companies that use the current definition of the National
Association of Real Estate Investment Trusts ("NAREIT"), after the adjustment
for straight-lining of rents.
 
    NAREIT's definition of funds from operations indicates that the calculation
should be made before any extraordinary item (determined in accordance with
GAAP), and before any deduction of significant non-recurring events that
materially distort the comparative measurement of the Operating Partnership's
performance.
 
                                       58
<PAGE>
    Funds from operations for the years ended December 31, 1998 and 1997, as
calculated in accordance with NAREIT's definition as published in March 1995,
are summarized in the following table (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                                    YEAR ENDED DECEMBER 31,
                                                                             -------------------------------------
                                                                                1998         1997         1996
                                                                             -----------  -----------  -----------
<S>                                                                          <C>          <C>          <C>
Income before non-recurring merger-related charges, gain on sale of rental
  property, distribution to preferred unitholders, beneficial conversion
  feature and extraordinary item...........................................  $   151,464  $    82,886  $    31,521
Add: Real estate-related depreciation and amortization (1).................       79,169       36,599       14,677
Deduct: Rental income adjustment for straight-lining of rents (1)..........      (13,684)      (7,733)        (978)
                                                                             -----------  -----------  -----------
Funds from operations, after adjustment for straight-lining of rents,
  before distributions to preferred unitholders............................  $   216,949  $   111,752  $    45,220
Deduct: Distributions to preferred unitholders.............................      (16,313)        (888)          --
                                                                             -----------  -----------  -----------
Funds from operations, after adjustment for straight-lining of rents, after
  distributions to preferred unitholders...................................  $   200,636  $   110,864  $    45,220
                                                                             -----------  -----------  -----------
                                                                             -----------  -----------  -----------
Cash flows provided by operating activities................................  $   208,761  $    66,661  $    39,382
Cash flows used in investing activities....................................  $  (749,067) $  (975,574) $  (305,891)
Cash flows provided by financing activities................................  $   543,411  $   706,368  $   470,893
                                                                             -----------  -----------  -----------
Basic weighted average units outstanding (2)...............................       63,438       43,356       21,172
                                                                             -----------  -----------  -----------
Diluted weighted average units outstanding (2).............................       70,867       44,604       21,652
                                                                             -----------  -----------  -----------
</TABLE>
 
- ------------------------
 
(1) Includes FFO adjustments in 1998 related to the Operating Partnership's
    investments in unconsolidated joint ventures and in 1997, investments in
    unconsolidated majority-owned property partnerships.
 
(2) See calculations for the amounts presented in the reconciliation below.
 
    The following schedule reconciles the Operating Partnership's basic weighted
average units to the diluted weighted average units presented above:
 
<TABLE>
<CAPTION>
                                                                                           YEAR ENDED DECEMBER 31,
                                                                                       -------------------------------
                                                                                         1998       1997       1996
                                                                                       ---------  ---------  ---------
<S>                                                                                    <C>        <C>        <C>
Basic weighted average units:........................................................     63,438     43,356     21,172
Add: Weighted average preferred units
  (after conversion to common units).................................................      6,974        383         --
Stock options........................................................................        411        579        264
Stock warrants.......................................................................         44         33         --
Redeemable partnership units.........................................................         --        253        216
                                                                                       ---------  ---------  ---------
Diluted weighted average units:......................................................     70,867     44,604     21,652
                                                                                       ---------  ---------  ---------
                                                                                       ---------  ---------  ---------
</TABLE>
 
INFLATION
 
    The Operating Partnership's leases with the majority of its tenants provide
for recoveries and escalation charges based upon the tenant's proportionate
share of, and/or increases in, real estate taxes and certain operating costs,
which reduce the Operating Partnership's exposure to increases in operating
costs resulting from inflation.
 
                                       59
<PAGE>
DISRUPTION IN OPERATIONS DUE TO YEAR 2000 PROBLEMS
 
GENERAL
 
    The Year 2000 problem is the result of computer programs and embedded chips
using a two-digit format, as opposed to four digits, to indicate the year. Such
computer systems may be unable to interpret dates beyond the year 1999, which
could cause a system failure or other computer errors, leading to disruptions in
operations. We have developed a three-phase Year 2000 project (the "Project") to
determine our Year 2000 systems compliance. Phase I is to identify those systems
with which we have exposure to Year 2000 problems. Phase II is the development
and implementation of action plans to be Year 2000 compliant in all areas by
early 1999. Phase III, to be completed by mid-1999, is the final testing of each
major area of exposure to assure compliance. We have identified three major
areas critical for successful Year 2000 compliance: (i) our central accounting
and operating computer system at our Cranford, New Jersey headquarters and local
networks and related systems in our regional offices, (ii) inquiries of our
tenants and key vendors as to their Year 2000 readiness and (iii) assessment of
our individual buildings as to the Year 2000 readiness of their operating
systems. We believe that progress in all such areas is proceeding on schedule
and that we will experience no material adverse effect as a result of the Year
2000 problem. There can, however, be no assurance that this will be the case.
Set forth below is a more detailed analysis of the Project and its anticipated
impact on us.
 
CENTRAL ACCOUNTING AND OPERATING SYSTEMS
 
    We have completed a review of key computer hardware and software and other
equipment, and have modified, upgraded or replaced all identified hardware and
equipment in our corporate and regional offices that we believe may be affected
by problems associated with Year 2000. Such hardware includes desktop and laptop
computers, servers, printers, telecopier machines and telephones. We, as part of
our routine modernization efforts, have completed necessary upgrades to
identified secondary software systems, such as word processing, spreadsheet
applications, telephone voicemail systems and computer calendar programs. The
software supplier of our accounting system is currently completing its Year 2000
upgrade and is scheduled to supply us with Year 2000 compliant software by March
31, 1999 at no cost to us. We are confident that such software will be delivered
as indicated. We anticipate internal testing of such software to be completed by
June 1999.
 
TENANT COMPLIANCE
 
    We believe that the completion of the Project as scheduled will minimize
Year 2000 related problems in our internal operations. However, we may still be
adversely impacted by Year 2000 related issues as a result of problems outside
our control, such as the inability of tenants to pay rent when due. In order to
gauge such risk, we sent questionnaires to each of our then existing tenants in
August 1998 to assess their Year 2000 compliance status. The responses to these
questionnaires continue to be received, reviewed and evaluated. Based on the
responses received, we do not anticipate any material adverse impact on the
orderly payment of monthly rent. Therefore, while there can be no assurance that
Year 2000 problems of tenants will not have a material adverse effect on our
operating results or financial condition, the information available to us
indicates such an occurrence is not likely.
 
PROPERTY COMPLIANCE
 
    Our property managers have completed Phase I of the Project, a building by
building survey of all of our properties to determine whether building support
systems such as heat, power, light, security, garages and elevators will be
affected by the advent of the Year 2000. Most of such systems either are already
Year 2000 compliant or contain no computerized parts. Our property managers are
currently completing Phase II of the Project, the development and implementation
of action plans to modify, upgrade or replace non-compliant building systems.
Once installed, these building systems will be tested for compliance pursuant to
Phase III of the Project.
 
                                       60
<PAGE>
    We have communicated with vendors of building systems or other services to
our buildings regarding their Year 2000 compliance. In many instances, we will
rely on the written representations from these
vendors regarding the Year 2000 compliance of their product or service. We are
also relying on assurances requested from utility providers of their Year 2000
compliance and their continued ability to provide uninterrupted service to our
buildings. We anticipate incurring a total of approximately $1.0 million in
costs to modify, upgrade and/or replace identified building support systems for
Year 2000 compliance.
 
WORST CASE EXPOSURE
 
    We are aware that it is generally believed that the Year 2000 problem, if
uncorrected, may result in a worldwide economic crisis. We are unable to
determine whether such predictions are true or false. However, if such
predictions prove true, we assume that all companies (including ours) will
experience the effects in one way or another. The most reasonably likely worst
case scenario we anticipate in connection with the Year 2000 problem relates to
the failure of the upgrade to our accounting system to effectively become Year
2000 compliant. We believe that such an event is unlikely, but an occurrence of
the foregoing might have a material adverse impact on our operations. We cannot
currently assess the financial impact of such a worst case scenario.
 
CONTINGENCY PLANS
 
    We are developing contingency plans to address the Year 2000 non-compliance
of (i) critical building support systems and (ii) our accounting system.
 
    CRITICAL BUILDING SYSTEMS.  We believe that the failure of any of the
following critical building support systems due to Year 2000 problems could have
a material adverse impact on the performance of an individual building: security
systems, elevator systems or fire/life safety systems. We believe that in the
event of a Year 2000 related failure in a building security system, we would be
able to maintain adequate security at the building through the use of security
guards. We believe that in the event of a Year 2000 related failure in a
building elevator system, adequate access would exist at most of our buildings
through existing stairways. We believe that in the event of a Year 2000 related
failure in a building fire/life safety system, our property management staff
would be able to manually operate such system.
 
    ACCOUNTING SOFTWARE.  We believe that failure of the Year 2000 compliance
upgrade to our accounting software might have a material adverse impact on our
operations. However, we believe that financial data within any given fiscal year
will remain intact and retrievable. We believe that alternative accounting
software and/or manual bookkeeping would minimize the impact of a Year 2000
related failure of our current accounting software.
 
RISKS
 
    The failure to correct a material Year 2000 problem could result in an
interruption in, or a failure of, certain normal business activities or
operations. Such failures could materially and adversely affect our results of
operations, liquidity and financial condition. Due to the general uncertainty
inherent in the Year 2000 problem, resulting in part from the uncertainty of the
Year 2000 readiness of third-party vendors and tenants, we are unable to
determine at this time whether the consequences of Year 2000 failures will have
a material impact on our results of operations, liquidity or financial
condition. The Project is expected to significantly reduce our level of
uncertainty about the Year 2000 problem. We believe that, with the
implementation and completion of the Project as scheduled, the possibility of
significant interruptions of normal operations should be reduced.
 
ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
 
    Approximately $669.1 million of the Operating Partnership's long-term debt
bears interest at fixed rates, and therefore the fair value of these instruments
is affected by changes in the market interest rates. The following table
presents principal cash flows (in thousands) based upon maturity dates of the
debt obligations and the related weighted-average interest rates by expected
maturity dates for the fixed rate
 
                                       61
<PAGE>
debt. The interest rate on the variable rate debt as of December 31, 1998 ranged
from LIBOR plus 0.65% to LIBOR plus 0.90%.
 
DECEMBER 31, 1998
 
<TABLE>
<CAPTION>
LONG-TERM
DEBT, INCLUDING                                                                                                     FAIR
CURRENT PORTION                      1999       2000       2001       2002       2003     THEREAFTER     TOTAL      VALUE
- ---------------------------------  ---------  ---------  ---------  ---------  ---------  -----------  ---------  ---------
<S>                                <C>        <C>        <C>        <C>        <C>        <C>          <C>        <C>
Fixed Rate.......................  $  47,450  $   9,069  $   8,003  $  11,783  $ 211,286   $ 381,536   $ 669,127  $ 679,156
Average Interest Rate............      7.65%      7.30%      7.28%      7.10%      7.31%       7.23%
 
Variable Rate....................  $   8,000             $ 671,600                         $  72,204   $ 751,804  $ 751,804
</TABLE>
 
ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
    The response to this item is submitted as a separate section of this Form
10-K. See Item 14.
 
ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE
 
    None.
 
                                    PART III
 
ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
    The information required by Item 10 is incorporated by reference from the
Corporation's definitive proxy statement for its annual meeting of shareholders
to be held on May 19, 1999.
 
ITEM 11.  EXECUTIVE COMPENSATION
 
    The information required by Item 11 is incorporated by reference from the
Corporation's definitive proxy statement for its annual meeting of shareholders
to be held on May 19, 1999.
 
ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
    The information required by Item 12 is incorporated by reference from the
Corporation's definitive proxy statement for its annual meeting of shareholders
to be held on May 19, 1999.
 
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
    The information required by Item 13 is incorporated by reference from the
Corporation's definitive proxy statement for its annual meeting of shareholders
to be held on May 19, 1999.
 
                                       62
<PAGE>
                                    PART IV
 
ITEM 14.  EXHIBITS, FINANCIAL STATEMENTS, SCHEDULES AND REPORTS ON FORM 8-K
 
<TABLE>
<S>        <C>
(A)1.      Financial Statements and Report of PricewaterhouseCoopers LLP, Independent
           Accountants
           Consolidated Balance Sheets as of December 31, 1998 and 1997
           Consolidated Statements of Operations for the Years Ended December 31, 1998, 1997 and
           1996
           Consolidated Statement of Changes in Partners' Capital for the Years Ended December
           31, 1998, 1997 and 1996
           Consolidated Statements of Cash Flows for the Years Ended December 31, 1998, 1997 and
           1996
           Notes to Consolidated Financial Statements
(A)2.      FINANCIAL STATEMENT SCHEDULE
           Schedule III--Real Estate Investments and Accumulated Depreciation as of December 31,
           1998
           All other schedules are omitted because they are not required or the required
           information is shown in the financial statements or notes thereto.
(A)3.      EXHIBITS
           The following exhibits are filed herewith or are incorporated by reference to
           exhibits previously filed:
</TABLE>
 
<TABLE>
<CAPTION>
 EXHIBIT NO.                                              EXHIBIT TITLE
- -------------  ---------------------------------------------------------------------------------------------------
<C>            <S>
    10.1       Agreement of Limited Partnership of HPMC Development Partners, L.P., dated as of April 23, 1998, by
               and among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali California Development
               Associates L.P.
    10.2       Supplement to Agreement of Limited Partnership of HPMC Development Partners, L.P., dated as of
               April 23, 1998, by and among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali
               California Development Associates L.P.
    10.3       First Amendment to Agreement of Limited Partnership of HPMC Development Partners, L.P., dated as of
               October 8, 1998, by and among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali
               California Development Associates L.P.
    10.4       Agreement of Limited Partnership of HPMC Lava Ridge Partners, L.P., dated as of July 21, 1998, by
               and among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali California Development
               Associates L.P.
    10.5       Amendment No. 1 to Revolving Credit Agreement dated July 20, 1998, by and among Mack-Cali Realty,
               L.P. and The Chase Manhattan Bank, Fleet National Bank and Other Lenders Which May Become Parties
               Thereto
    10.6       Agreement No. 2 to Revolving Credit Agreement, dated as of December 30, 1998, among Mack-Cali
               Realty, L.P. and The Chase Manhattan Bank, Fleet National Bank and Other Lenders Which May Become
               Parties Thereto
     23        Consent of PricewaterhouseCoopers LLP, independent accountants
     27        Financial Data Schedule
</TABLE>
 
<TABLE>
<S>        <C>
(B)        REPORTS ON FORM 8-K
           None.
</TABLE>
 
<TABLE>
<S>        <C>
(D)        The documents listed below have been filed by the Operating Partnership on
           Registration Statement Form S-3 (File No. 333-57103) with the Commission and are
           incorporated by reference:
           (i)  The combined financial statements of Mack-Cali Realty, L.P. and Mack-Cali
           Property Partnerships as of December 31, 1997 and 1996 and the three years in the
                period ended December 31, 1997 and Report of Independent Accountants.
</TABLE>
 
                                       63
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Partners of Mack-Cali Realty, L.P.
 
    In our opinion, the consolidated financial statements listed in the index
appearing under Item 14 (a) (1) on page 63 present fairly, in all material
respects, the financial position of Mack-Cali Realty L.P. and its subsidiaries
at December 31, 1998 and 1997, and the results of their operations and their
cash flows for each of the three years in the period ended December 31, 1998, in
conformity with generally accepted accounting principles. In addition, in our
opinion, the financial statement schedule listed in the index appearing under
Item 14(a)(2) on page 63 presents fairly, in all material respects, the
information set forth therein when read in conjunction with the related
consolidated financial statements. These financial statements and financial
statement schedule are the responsibility of the Operating Partnership's
management; our responsibility is to express an opinion on these financial
statements and financial statement schedule based on our audits. We conducted
our audits of these statements in accordance with generally accepted auditing
standards which require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for the opinion expressed above.
 
/s/ PRICEWATERHOUSECOOPERS LLP
- ---------------------------------
 
PricewaterhouseCoopers LLP
 
New York, New York
February 23, 1999
 
                                       64
<PAGE>
                    MACK-CALI REALTY, L.P. AND SUBSIDIARIES
 
                          CONSOLIDATED BALANCE SHEETS
 
                (DOLLARS IN THOUSANDS, EXCEPT PER UNIT AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                               DECEMBER 31,
                                                                                        --------------------------
<S>                                                                                     <C>           <C>
                                                                                            1998          1997
                                                                                        ------------  ------------
                                                      ASSETS
Rental property
  Land and leasehold interests........................................................  $    510,534  $      9,881
  Buildings and improvements..........................................................     2,887,115        52,113
  Tenant improvements.................................................................        64,464            --
  Furniture, fixtures and equipment...................................................         5,686         3,598
                                                                                        ------------  ------------
                                                                                           3,467,799        65,592
Less--accumulated depreciation and amortization.......................................      (177,934)         (644)
                                                                                        ------------  ------------
  Total rental property...............................................................     3,289,865        64,948
Cash and cash equivalents.............................................................         5,809         2,176
Investments in unconsolidated majority-owned Property Partnerships....................            --     1,821,614
Investments in unconsolidated joint ventures..........................................        66,508            --
Unbilled rents receivable.............................................................        41,038             6
Deferred charges and other assets, net................................................        39,020         4,666
Restricted cash.......................................................................         6,026            --
Accounts receivable, net of allowance for doubtful accounts of $670 and $327..........         3,928           514
Mortgage note receivable..............................................................            --         7,250
                                                                                        ------------  ------------
Total assets..........................................................................  $  3,452,194  $  1,901,174
                                                                                        ------------  ------------
                                                                                        ------------  ------------
                                        LIABILITIES AND PARTNERS' CAPITAL
Mortgages and loans payable...........................................................  $  1,420,931  $    322,100
Distributions payable.................................................................        40,564        28,089
Accounts payable and accrued expenses.................................................        33,253        11,814
Rents received in advance and security deposits.......................................        29,980         1,115
Accrued interest payable..............................................................         2,246         1,371
                                                                                        ------------  ------------
  Total liabilities...................................................................     1,526,974       364,489
                                                                                        ------------  ------------
Commitments and contingencies
Redeemable Partnership Units:
  Preferred units, none and 230,562 units outstanding at redemption value.............            --       272,815
  Limited partners, none and 6,097,477 common units outstanding at redemption value...            --       249,997
                                                                                        ------------  ------------
  Total redeemable partnership units..................................................            --       522,812
                                                                                        ------------  ------------
PARTNERS' CAPITAL:
  Preferred units, 250,256 and none units outstanding.................................       223,330            --
  General partner, 57,266,137 and 49,856,289 common units outstanding.................     1,387,674     1,005,349
  Limited partners, 9,086,585 and none common units outstanding.......................       305,692            --
  Unit warrants, 2,000,000 and 2,000,000 outstanding..................................         8,524         8,524
                                                                                        ------------  ------------
  Total partners' capital.............................................................     1,925,220     1,013,873
                                                                                        ------------  ------------
Total liabilities and partners' capital...............................................  $  3,452,194  $  1,901,174
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       65
<PAGE>
                    MACK-CALI REALTY, L.P. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
 
                    (IN THOUSANDS, EXCEPT PER UNIT AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                      YEAR ENDED DECEMBER 31,
                                                                                  --------------------------------
<S>                                                                               <C>         <C>        <C>
                                                                                     1998       1997       1996
                                                                                  ----------  ---------  ---------
                                          REVENUES
Base rents......................................................................  $  427,528  $     524  $      --
Escalations and recoveries from tenants.........................................      51,981         84         --
Management fees from Property Partnerships......................................          --      6,532      2,862
Parking and other...............................................................      10,712      2,268        285
Interest income.................................................................       2,423     13,727     10,033
Equity in earnings of unconsolidated joint ventures.............................       1,055         --         --
                                                                                  ----------  ---------  ---------
    Total revenues..............................................................     493,699     23,135     13,180
                                                                                  ----------  ---------  ---------
                                          EXPENSES
Real estate taxes...............................................................      48,297         68         --
Utilities.......................................................................      38,440         57         14
Operating services..............................................................      62,967      1,745        237
General and administrative......................................................      25,572     15,061      5,637
Depreciation and amortization...................................................      78,916        279         52
Interest expense................................................................      88,043      9,670      4,672
Non-recurring merger-related charges............................................          --     46,519         --
                                                                                  ----------  ---------  ---------
    Total expenses..............................................................     342,235     73,399     10,612
                                                                                  ----------  ---------  ---------
Income (loss) before equity in net income of unconsolidated
  majority-owned Property Partnerships and extraordinary item...................     151,464    (50,264)     2,568
Equity in net income of unconsolidated majority-owned Property Partnerships.....          --     89,846     34,611
                                                                                  ----------  ---------  ---------
Income before extraordinary item................................................     151,464     39,582     37,179
Extraordinary item--loss on early retirement of debt............................      (2,670)    (7,200)      (561)
                                                                                  ----------  ---------  ---------
Net income......................................................................     148,794     32,382     36,618
Preferred unit distributions....................................................     (16,313)      (888)        --
Beneficial conversion feature...................................................          --    (29,361)        --
                                                                                  ----------  ---------  ---------
Net income available to common unitholders......................................  $  132,481  $   2,133  $  36,618
                                                                                  ----------  ---------  ---------
                                                                                  ----------  ---------  ---------
BASIC EARNINGS PER UNIT:
Income before extraordinary item................................................  $     2.13  $    0.22  $    1.76
Extraordinary item--loss on early retirement of debt............................       (0.04)     (0.17)     (0.03)
                                                                                  ----------  ---------  ---------
Net income......................................................................  $     2.09  $    0.05  $    1.73
                                                                                  ----------  ---------  ---------
                                                                                  ----------  ---------  ---------
DILUTED EARNINGS PER UNIT:
Income before extraordinary item................................................  $     2.11  $    0.21  $    1.72
Extraordinary item--loss on early retirement of debt............................       (0.04)     (0.16)     (0.03)
                                                                                  ----------  ---------  ---------
Net income......................................................................  $     2.07  $    0.05  $    1.69
                                                                                  ----------  ---------  ---------
                                                                                  ----------  ---------  ---------
Distributions declared per common unit..........................................  $     2.10  $    1.90  $    1.75
                                                                                  ----------  ---------  ---------
Basic weighted average units outstanding........................................      63,438     43,356     21,172
Diluted weighted average units outstanding......................................      63,893     44,409     21,652
                                                                                  ----------  ---------  ---------
</TABLE>
 
  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.
 
                                       66
<PAGE>
                    MACK-CALI REALTY, L.P. AND SUBSIDIARIES
 
             CONSOLIDATED STATEMENT OF CHANGES IN PARTNERS' CAPITAL
 
                                 (IN THOUSANDS)
<TABLE>
<CAPTION>
                                                     GENERAL      LIMITED
                                     PREFERRRED      PARTNER      PARTNER     PREFERRED    GENERAL     LIMITED      UNIT
                                        UNITS         UNITS        UNITS     UNITHOLDERS   PARTNER    PARTNERS    WARRANTS
                                    -------------  -----------  -----------  -----------  ----------  ---------  -----------
<S>                                 <C>            <C>          <C>          <C>          <C>         <C>        <C>
Balance at January 1, 1996........           --        15,105           --    $      --   $  152,846  $      --   $      --
Net income........................           --            --           --           --       31,944         --          --
Distributions.....................           --            --           --           --      (37,666)        --          --
Contributions--net proceeds from
  common stock offerings..........           --        20,987           --           --      518,219         --          --
Redemption of limited partner
  units for shares of common
  stock...........................           --           101           --           --        1,073         --          --
Contributions--proceeds from stock
  options exercised...............           --           126           --           --        2,001         --          --
Adjustment to reflect preferred
  unitholders'and limited
  partners' capital at redemption
  value...........................           --            --           --           --      (23,126)        --          --
                                            ---    -----------       -----   -----------  ----------  ---------  -----------
Balance as December 31, 1996......                     36,319           --           --      645,291         --          --
Net income........................           --            --           --           --        1,405         --          --
Distributions.....................           --            --           --           --      (76,311)        --          --
Contributions--net proceeds from
  common stock offerings..........           --        13,000           --           --      489,116         --          --
Redemption of limited partner
  units for shares of common
  stock...........................           --             1           --           --           17         --          --
Contributions--proceed from stock
  options exercised...............           --           337           --           --        7,187         --          --
Issuance of Stock Awards Rights
  and Stock Purchase Rights.......           --           351           --           --       12,526         --          --
Beneficial conversion feature.....           --            --           --           --       26,801         --          --
Issuance of 2,000 Unit Warrants...           --            --           --           --           --         --       8,524
Repurchase of common stock........           --          (152)          --           --       (4,680)        --          --
Adjustment to reflect preferred
  unitholders' and limited
  partners' capital at redemption
  value...........................           --            --           --           --      (96,003)        --          --
                                            ---    -----------       -----   -----------  ----------  ---------  -----------
Balance at December 31, 1997......           --        49,856           --           --    1,005,349         --       8,524
Net income........................           --            --           --        6,046      116,578      6,643          --
Distributions.....................           --            --           --       (8,417)    (119,950)    (9,204)         --
Contributions--net proceeds from
  common stock offerings..........           --         7,968           --           --      288,393         --          --
Redemption of limited partner
  units for shares of common
  stock...........................           --            29           (7)          --        1,029       (181)         --
Contributions--proceeds from stock
  options exercised...............           --           268           --           --        5,475         --          --
Issuance of units in connection
  with acquisitions...............           --            --        1,367           --           --     41,559          --
Issuance of Preferred Units.......            2            --           --        2,258           --         --          --
Repurchase of common stock........           --          (855)          --           --      (25,058)        --          --
Adjustment to reflect preferred
  unitholders'and limited
  partners' capital at redemption
  value...........................           --            --           --           --      115,858         --          --
Reclassification of previously
  redeemable partnership units....          248            --        7,727      223,443           --    266,875          --
                                            ---    -----------       -----   -----------  ----------  ---------  -----------
Balance at December 31, 1998......          250        57,266        9,087    $ 223,330   $1,387,674  $ 305,692   $   8,524
                                            ---    -----------       -----   -----------  ----------  ---------  -----------
                                            ---    -----------       -----   -----------  ----------  ---------  -----------
 
<CAPTION>
 
                                      TOTAL
                                    ----------
<S>                                 <C>
Balance at January 1, 1996........  $  152,846
Net income........................      31,944
Distributions.....................     (37,666)
Contributions--net proceeds from
  common stock offerings..........     518,219
Redemption of limited partner
  units for shares of common
  stock...........................       1,073
Contributions--proceeds from stock
  options exercised...............       2,001
Adjustment to reflect preferred
  unitholders'and limited
  partners' capital at redemption
  value...........................     (23,126)
                                    ----------
Balance as December 31, 1996......     645,291
Net income........................       1,405
Distributions.....................     (76,311)
Contributions--net proceeds from
  common stock offerings..........     489,116
Redemption of limited partner
  units for shares of common
  stock...........................          17
Contributions--proceed from stock
  options exercised...............       7,187
Issuance of Stock Awards Rights
  and Stock Purchase Rights.......      12,526
Beneficial conversion feature.....      26,801
Issuance of 2,000 Unit Warrants...       8,524
Repurchase of common stock........      (4,680)
Adjustment to reflect preferred
  unitholders' and limited
  partners' capital at redemption
  value...........................     (96,003)
                                    ----------
Balance at December 31, 1997......   1,013,873
Net income........................     129,267
Distributions.....................    (137,571)
Contributions--net proceeds from
  common stock offerings..........     288,393
Redemption of limited partner
  units for shares of common
  stock...........................         848
Contributions--proceeds from stock
  options exercised...............       5,475
Issuance of units in connection
  with acquisitions...............      41,559
Issuance of Preferred Units.......       2,258
Repurchase of common stock........     (25,058)
Adjustment to reflect preferred
  unitholders'and limited
  partners' capital at redemption
  value...........................     115,858
Reclassification of previously
  redeemable partnership units....     490,318
                                    ----------
Balance at December 31, 1998......  $1,925,220
                                    ----------
                                    ----------
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       67
<PAGE>
                    MACK-CALI REALTY, L.P. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                       YEAR ENDED DECEMBER 31,
                                                                              -----------------------------------------
                                                                                  1998           1997          1996
                                                                              -------------  -------------  -----------
<S>                                                                           <C>            <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net income..................................................................  $     148,794  $      32,382  $    36,618
Adjustments to reconcile net income to net cash provided by operating
  activities:
  Depreciation and amortization.............................................         78,916            279           52
    Amortization of stock compensation......................................             --         12,526           --
    Amortization of premium on loans receivable.............................             --            924        1,585
    Amortization of deferred financing costs................................          1,580            585          263
    Equity in earnings of unconsolidated joint ventures.....................         (1,055)            --           --
    Extraordinary item--loss on early retirement of debt....................          2,670          7,200          561
Changes in operating assets and liabilities:
    Increase in unbilled rents receivable...................................        (13,600)            (6)          --
    Increase in deferred charges and other assets, net......................        (17,811)        (1,035)         425
    (Increase) decrease in accounts receivable, net.........................           (192)            24           81
    Increase in accounts payable and accrued expenses.......................          2,117         11,414          (21)
    Increase in rents received in advance and security deposits.............          8,585          1,115           --
    (Decrease) increase in accrued interest payable.........................         (1,243)         1,253         (182)
                                                                              -------------  -------------  -----------
  Net cash provided by operating activities.................................  $     208,761  $      66,661  $    39,382
                                                                              -------------  -------------  -----------
                                                                              -------------  -------------  -----------
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to rental property................................................  $    (692,766) $     (46,100) $      (142)
Issuance of mortgage note receivable........................................        (20,000)       (11,600)          --
Repayment of mortgage note receivable.......................................         20,000             --           --
Decrease in loans receivable from
Property Partnerships.......................................................             --         77,802           --
Distributions in excess of equity in net income of majority-owned Property
  Partnerships..............................................................             --        136,144       57,358
Contributions to Property Partnerships......................................             --     (1,131,820)    (363,506)
Investments in unconsolidated joint ventures................................        (58,844)            --           --
Distributions from unconsolidated joint ventures............................          1,725             --           --
Decrease in restricted cash.................................................            818             --          399
                                                                              -------------  -------------  -----------
  Net cash used in investing activities.....................................  $    (749,067) $    (975,574) $  (305,891)
                                                                              -------------  -------------  -----------
                                                                              -------------  -------------  -----------
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages and loans payable...................................  $   1,525,758  $     669,180  $   272,113
Repayments of mortgages and loans payable...................................     (1,098,065)      (376,885)    (289,007)
Redemption of common units..................................................         (3,163)            --           --
Payment of financing costs..................................................        (10,110)        (3,095)          --
Purchase of treasury units..................................................        (25,058)        (4,680)          --
Net proceeds from common stock offerings....................................        288,393        489,116      518,219
Proceeds from stock options exercised.......................................          5,475          7,187        2,001
Payment of distributions....................................................       (139,819)       (74,455)     (32,433)
                                                                              -------------  -------------  -----------
  Net cash provided by financing activities.................................  $     543,411  $     706,368  $   470,893
                                                                              -------------  -------------  -----------
                                                                              -------------  -------------  -----------
Net increase (decrease) in cash and cash equivalents........................  $       3,105  $    (202,545) $   204,384
Cash and cash equivalents, beginning of period..............................  $       2,704  $     204,721          337
                                                                              -------------  -------------  -----------
Cash and cash equivalents, end of period....................................  $       5,809  $       2,176  $   204,721
                                                                              -------------  -------------  -----------
                                                                              -------------  -------------  -----------
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       68
<PAGE>
                    MACK-CALI REALTY, L.P. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (DOLLARS IN THOUSANDS, EXCEPT PER UNIT AMOUNTS)
 
1. ORGANIZATION AND BASIS OF PRESENTATION
 
ORGANIZATION
 
    Mack-Cali Realty, L.P., a Delaware limited partnership, and subsidiaries
(the "Operating Partnership"), was formed on August 31, 1994 to conduct the
business of leasing, management, acquisition, development, construction, and
tenant-related services for its sole general partner, Mack-Cali Realty
Corporation (the "Corporation" or "General Partner") and subsidiaries. The
Operating Partnership, through its operating divisions and subsidiaries,
including the Mack-Cali Property Partnerships (the "Property Partnerships"), as
described below, is the entity through which all of the General Partner's
operations are conducted.
 
    The Property Partnerships, not a legal entity, consist of partnerships which
are engaged in the ownership and operation of the Properties (as hereinafter
defined) of the Operating Partnership, excluding certain Properties which are
wholly-owned by the Operating Partnership. Prior to January 1, 1998 the Property
Partnerships were owned 99 percent by the Operating Partnership as a
non-controlling limited partner, and one percent by the General Partner, as a
controlling general partner. During 1998, the Operating Partnership obtained
control of the Property Partnerships pursuant to agreements with the General
Partner.
 
    The General Partner is a fully-integrated, self-administered, self-managed
real estate investment trust ("REIT"). The General Partner controls the
Operating Partnership as its sole general partner, and owned an 86.3 percent and
89.1 percent common unit interest in the Operating Partnership at December 31,
1998 and 1997, respectively.
 
    The General Partner's business is the ownership of interests in and
operation of the Operating Partnership, and all of the General Partner's
expenses are incurred for the benefit of the Operating Partnership. The General
Partner is reimbursed by the Operating Partnership for all expenses it incurs
relating to the ownership and operation of the Operating Partnership. The
Operating Partnership earns a management fee of between three percent and five
percent of revenues, as defined, for its management of the Property
Partnerships.
 
    As of December 31, 1998, the Operating Partnership owned or had interests in
249 properties plus developable land (collectively, the "Properties"). The
Properties aggregate approximately 27.8 million square feet, and are comprised
of 157 office and 80 office/flex buildings totaling approximately 27.4 million
square feet (which included four office properties and one office/flex property,
aggregating 1.0 million square feet, owned by unconsolidated joint ventures in
which the Operating Partnership has investment interests), six
industrial/warehouse buildings totaling approximately 387,400 square feet, two
multi-family residential complexes consisting of 453 units, two stand-alone
retail properties and two land leases. The Properties are located in 12 states,
primarily in the Northeast, plus the District of Columbia.
 
BASIS OF PRESENTATION
 
    The accompanying consolidated financial statements include all accounts of
the Operating Partnership and its subsidiaries, including the Property
Partnerships. During 1998, the Operating Partnership obtained control of the
Property Partnerships pursuant to agreements with the General Partner, as
discussed above. Accordingly, the accounts of the Property Partnerships are
consolidated with the financial statements of the Operating Partnership
effective January 1, 1998. Prior to January 1, 1998, the Operating Partnership
accounted for the Property Partnerships under the equity method of accounting.
All significant intercompany accounts and transactions have been eliminated. See
"Investments in Unconsolidated
 
                                       69
<PAGE>
1. ORGANIZATION AND BASIS OF PRESENTATION (CONTINUED)
Majority-Owned Property Partnerships" and "Investments in Unconsolidated Joint
Ventures" in Note 2 for the Operating Partnership's accounting treatment of
unconsolidated partnership and joint venture interests.
 
    The preparation of financial statements in conformity with generally
accepted accounting principles ("GAAP") requires management to make estimates
and assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
2. SIGNIFICANT ACCOUNTING POLICIES
 
    RENTAL PROPERTY
 
    Rental properties are stated at cost less accumulated depreciation and
amortization. Costs directly related to the acquisition and development of
rental properties are capitalized. Capitalized development costs include
interest, property taxes, insurance and other project costs incurred during the
period of construction. Ordinary repairs and maintenance are expensed as
incurred; major replacements and betterments, which improve or extend the life
of the asset, are capitalized and depreciated over their estimated useful lives.
Fully-depreciated assets are removed from the accounts.
 
    Properties are depreciated using the straight-line method over the estimated
useful lives of the assets. The estimated useful lives are as follows:
 
<TABLE>
<S>                                            <C>
Leasehold interests                            Remaining lease term
- --------------------------------------------------------------------------------------------
 
Buildings and improvements                     5 to 40 years
- --------------------------------------------------------------------------------------------
 
Tenant improvements                            The shorter of the term of the related lease
                                               or useful life
- --------------------------------------------------------------------------------------------
 
Furniture, fixtures and equipment              5 to 10 years
- --------------------------------------------------------------------------------------------
</TABLE>
 
    On a periodic basis, management assesses whether there are any indicators
that the value of the real estate properties may be impaired. A property's value
is impaired only if management's estimate of the aggregate future cash flows
(undiscounted and without interest charges) to be generated by the property are
less than the carrying value of the property. To the extent an impairment has
occurred, the loss shall be measured as the excess of the carrying amount of the
property over the fair value of the property. Management does not believe that
the value of any of its rental properties is impaired.
 
    REDEEMABLE PARTNERSHIP UNITS
 
    Prior to August 21, 1998, the Operating Partnership accounted for the
outstanding common and preferred units not held by the Corporation as redeemable
partnership units. These units are classified outside of permanent partners'
capital in the accompanying December 31, 1997 balance sheet. These units were
initially recorded at their fair value and subsequently adjusted based on the
fair value at the balance sheet date as measured by the closing price of the
Corporation's common stock on that date multiplied by the total number of units
outstanding (see Note 11).
 
    Effective August 21, 1998, pursuant to an amendment to the Operating
Partnership agreement, in which the Operating Partnership obtained control over
the redemption rights of the units, these units were
 
                                       70
<PAGE>
2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
reclassified as a component of permanent partners' capital. The fair value of
the reclassified units was measured by the closing price of the Corporation's
common stock on that date multiplied by the total number of units outstanding.
 
    INVESTMENTS IN UNCONSOLIDATED MAJORITY-OWNED PROPERTY PARTNERSHIPS
 
    Prior to January 1, 1998, the Operating Partnership accounted for its
non-controlling 99 percent limited partner interest in the Property Partnerships
under the equity method of accounting. These investments were recorded initially
at cost, as Investments in Unconsolidated Majority-Owned Property Partnerships,
and subsequently adjusted for contributions and distributions and equity in
income. During 1998, the Operating Partnership obtained control of the Property
Partnerships pursuant to agreements with the General Partner. Accordingly, the
accounts of the Property Partnerships are consolidated with the Operating
Partnership effective January 1, 1998.
 
    INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES
 
    The Operating Partnership accounts for its investments in unconsolidated
joint ventures under the equity method of accounting as the Operating
Partnership exercises significant influence, but does not control these
entities. These investments are recorded initially at cost, as Investments in
Unconsolidated Joint Ventures, and subsequently adjusted for equity in earnings
(loss) and cash contributions and distributions. See Note 5.
 
    CASH AND CASH EQUIVALENTS
 
    All highly liquid investments with a maturity of three months or less when
purchased are considered to be cash equivalents.
 
    DEFERRED FINANCING COSTS
 
    Costs incurred in obtaining financing are capitalized and amortized on a
straight-line basis, which approximates the effective interest method, over the
term of the related indebtedness. Amortization of such costs is included in
interest expense and was $1,580, $585 and $263 for the years ended December 31,
1998, 1997 and 1996, respectively.
 
    DEFERRED LEASING COSTS
 
    Costs incurred in connection with leases are capitalized and amortized on a
straight-line basis over the terms of the related leases and included in
depreciation and amortization. Unamortized deferred leasing costs are charged to
amortization expense upon early termination of the lease. Certain employees
provide leasing services to the Properties and receive compensation based on
space leased. Such compensation, which is capitalized and amortized,
approximated $3,509, for the year ended December 31, 1998 and $1,859 and $490,
for the Property Partnerships for the years ended December 31, 1997 and 1996,
respectively.
 
    REVENUE RECOGNITION
 
    Base rental revenue is recognized on a straight-line basis over the terms of
the respective leases. Unbilled rents receivable represents the amount by which
straight-line rental revenue exceeds rents currently billed in accordance with
the lease agreements. Parking revenue includes income from parking spaces leased
to tenants. Rental income on residential property under operating leases having
terms generally of one year or less is recognized when earned.
 
                                       71
<PAGE>
2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    Reimbursements are received from tenants for certain costs as provided in
the lease agreements. These costs generally include real estate taxes,
utilities, insurance, common area maintenance and other recoverable costs (see
Note 15).
 
    INCOME AND OTHER TAXES
 
    The Operating Partnership is a partnership and, as a result, all income and
losses of the partnership are allocated to the partners for inclusion in their
respective income tax returns. Accordingly, no provision or benefit for income
taxes has been made in the accompanying financial statements.
 
    As of December 31, 1998, the net basis of the rental property for Federal
income tax purposes was lower than the net assets as reported in the Operating
Partnership's financial statements by approximately $975,683. The Operating
Partnership's taxable income for the years ended December 31, 1998, 1997 and
1996 was approximately $154,245, $68,800 and $34,558, respectively. The
differences between book income and taxable income primarily result from
differences in depreciation expense, the recording of rental income, the
nondeductibility of certain expenses for tax purposes, differences in revenue
recognition and the rules for tax purposes of a property exchange and issuance
of preferred convertible partnership units.
 
    INTEREST RATE CONTRACTS
 
    Interest rate contracts are utilized by the Operating Partnership to reduce
interest rate risks. The Operating Partnership does not hold or issue derivative
financial instruments for trading purposes. The differentials to be received or
paid under contracts designated as hedges are recognized in income over the life
of the contracts as adjustments to interest expense.
 
    In certain situations, the Operating Partnership uses forward treasury lock
agreements to mitigate the potential effects of changes in interest rates for
prospective transactions. Gains and losses are deferred and amortized as
adjustments to interest expense over the remaining life of the associated debt
to the extent that such debt remains outstanding.
 
    EARNINGS PER UNIT
 
    In accordance with the Statement of Financial Accounting Standards No. 128
("FASB No. 128"), the Operating Partnership presents both basic and diluted
earnings per unit ("EPU"). Basic EPU excludes dilution and is computed by
dividing net income available to common unitholders by the weighted average
number of units outstanding for the period. Diluted EPU reflects the potential
dilution that could occur if securities or other contracts to issue common units
were exercised or converted into common units, where such exercise or conversion
would result in a lower EPU amount.
 
    DISTRIBUTIONS PAYABLE
 
    The distributions payable at December 31, 1998 represents distributions
payable to common unitholders of record on January 6, 1999 (66,353,322 units),
and preferred distributions to preferred unitholders (250,256 preferred units)
for the fourth quarter 1998. The fourth quarter 1998 common unit distribution of
$0.55 per common unit (pro-rated for units issued during the quarter), as well
as the fourth quarter preferred unit distribution of $16.875 per preferred unit,
were approved by the General Partner on December 15, 1998 and paid on January
26, 1999.
 
    The distributions payable at December 31, 1997 represent distributions
payable to common unitholders of record on January 5, 1998 (55,953,766 common
units) and preferred distributions to preferred unitholders (230,562 preferred
units) for the fourth quarter 1997. The fourth quarter 1997 common unit
distribution of $0.50 per common unit (pro-rated for units issued during the
quarter), as well
 
                                       72
<PAGE>
2. SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
as the pro-rated fourth quarter preferred unit distribution aggregating $888,
were approved by the General Partner on December 17, 1997 and paid on January
16, 1998.
 
    EXTRAORDINARY ITEM
 
    Extraordinary item represents the effect resulting from the early settlement
of certain debt obligations, including related deferred financing costs,
prepayment penalties, yield maintenance payments and other related items.
 
    UNDERWRITING COMMISSIONS AND COSTS
 
    Underwriting commissions and costs incurred in connection with the
Corporation's stock offerings, and subsequent reinvestment in general partner
units are reflected as a reduction of these unit values.
 
    STOCK OPTIONS
 
    The Corporation accounts for stock-based compensation using the intrinsic
value method prescribed in Accounting Principles Board Opinion No. 25,
"Accounting for Stock Issued to Employees," and related Interpretations ("APB
No. 25"). Under APB No. 25, compensation cost is measured as the excess, if any,
of the quoted market price of the Corporation's stock at the date of grant over
the exercise price of the option granted. Compensation cost for stock options,
if any, is recognized ratably over the vesting period. The Corporation's policy
is to grant options with an exercise price equal to the quoted closing market
price of the Corporation's stock on the business day preceding the grant date.
Accordingly, no compensation cost has been recognized for the Corporation's
stock option plans. The Operating Partnership provides additional pro forma
disclosures as required under Statement of Financial Accounting Standards No.
123, "Accounting for Stock-Based Compensation" ("FASB No. 123"). See Note 10.
 
    NON-RECURRING CHARGES
 
    The Operating Partnership considers non-recurring charges as costs incurred
specific to significant non-recurring events that would materially distort the
comparative measurement of the Operating Partnership's performance.
 
                                       73
<PAGE>
3. ACQUISITIONS/TRANSACTIONS
 
1998 TRANSACTIONS
 
OPERATING PROPERTY ACQUISITIONS
 
    The Operating Partnership acquired the following operating properties during
the year ended December 31, 1998:
 
<TABLE>
<CAPTION>
                                                                                                                   INVESTMENT BY
ACQUISITION                                                                                # OF       RENTABLE       OPERATING
   DATE            PROPERTY/PORTFOLIO NAME                      LOCATION                  BLDGS.     SQUARE FEET  PARTNERSHIP (A)
- -----------  -----------------------------------  ------------------------------------  -----------  -----------  ---------------
<S>          <C>                                  <C>                                   <C>          <C>          <C>
    Office
- -----------
   2/05/98   500 West Putnam Avenue (b)           Greenwich, Fairfield County, CT                1      121,250      $  20,125
   2/25/98   10 Mountainview Road                 Upper Saddle River, Bergen County,             1      192,000         24,754
                                                  NJ
   3/12/98   1250 Capital of Texas Highway South  Austin, Travis County, TX                      1      270,703         37,266
   3/27/98   Prudential Business Campus (c)       Parsippany, Morris County, NJ                  5      703,451        130,437
   3/27/98   Pacifica Portfolio- Phase I (d) (e)  Denver & Colorado Springs, CO                 10      620,017         74,966
   3/30/98   Morris County Financial Center       Parsippany, Morris County, NJ                  2      301,940         52,763
   5/13/98   3600 South Yosemite                  Denver, Denver County, CO                      1      133,743         13,555
   5/22/98   500 College Road East (f)            Princeton, Mercer County, NJ                   1      158,235         21,334
   6/01/98   1709 New York Ave./1400 L Street     Washington, D.C.                               2      325,000         90,385
             N.W.
   6/03/98   400 South Colorado Boulevard         Denver, Denver County, CO                      1      125,415         12,147
   6/08/98   Pacifica Portfolio--Phase II (d)     Denver & Colorado Springs, CO                  6      514,427         85,910
             (e) (g)
   7/16/98   4200 Parliament Drive (h)            Lanham, Prince George's County, MD             1      122,000         15,807
   9/10/98   40 Richards Avenue (d)               Norwalk, Fairfield County, CT                  1      145,487         19,587
   9/15/98   Seven Skyline Drive (i)              Hawthorne, Westchester County, NY              1      109,000         13,379
                                                                                               ---   -----------  ---------------
                                                  TOTAL OFFICE PROPERTY ACQUISITIONS:           34    3,842,668      $ 612,415
                                                                                               ---   -----------  ---------------
Office/flex
- -----------
   1/30/98   McGarvey Portfolio (j)               Moorestown, Burlington County, NJ             17      748,660      $  47,526
   7/14/98   1510 Lancer Road (k)                 Moorestown, Burlington County, NJ              1       88,000          3,700
                                                                                               ---   -----------  ---------------
                                             TOTAL OFFICE/FLEX PROPERTY ACQUISITIONS:           18      836,660      $  51,226
                                                                                               ---   -----------  ---------------
                                               TOTAL OPERATING PROPERTY ACQUISITIONS:           52    4,679,328      $ 663,641
                                                                                               ---   -----------  ---------------
                                                                                               ---   -----------  ---------------
</TABLE>
 
PROPERTIES PLACED IN SERVICE
 
    The Operating Partnership placed in service the following properties through
the completion of development or redevelopment during the year ended December
31, 1998:
 
<TABLE>
<CAPTION>
                                                                                                                   INVESTMENT BY
DATE PLACED                                                                                # OF       RENTABLE       OPERATING
IN SERVICE              PROPERTY NAME                           LOCATION                  BLDGS.     SQUARE FEET  PARTNERSHIP (A)
- -----------  -----------------------------------  ------------------------------------  -----------  -----------  ---------------
<S>          <C>                                  <C>                                   <C>          <C>          <C>
    Office
- -----------
   1/15/98   224 Strawbridge Drive                Moorestown, Burlington County, NJ              1       74,000      $   7,796
   8/01/98   228 Strawbridge Drive                Moorestown, Burlington County, NJ              1       74,000          7,986
                                                                                               ---   -----------  ---------------
                                           TOTAL OFFICE PROPERTIES PLACED IN SERVICE:            2      148,000      $  15,782
                                                                                               ---   -----------  ---------------
Office/flex
- -----------
   6/08/98   Two Center Court                     Totowa, Passaic County, NJ                     1       30,600      $   2,231
  10/23/98   650 West Avenue                      Stamford, Fairfield County, CT                 1       40,000          4,952
                                                                                               ---   -----------  ---------------
                                      TOTAL OFFICE/FLEX PROPERTIES PLACED IN SERVICE:            2       70,600      $   7,183
                                                                                               ---   -----------  ---------------
                                                  TOTAL PROPERTIES PLACED IN SERVICE:            4      218,600      $  22,965
                                                                                               ---   -----------  ---------------
                                                                                               ---   -----------  ---------------
</TABLE>
 
- ------------------------
 
SEE FOOTNOTES TO THESE SCHEDULES ON SUBSEQUENT PAGE.
 
                                       74
<PAGE>
3. ACQUISITIONS/TRANSACTIONS (CONTINUED)
    Footnotes to "1998 Transactions" schedules on previous page.
 
    (a) Unless otherwise noted, transactions were funded by the Operating
       Partnership with funds primarily made available through draws on the
       Operating Partnership's credit facilities.
 
    (b) The acquisition was funded with cash as well as the assumption of
       mortgage debt (estimated fair value of approximately $12,104, with annual
       effective interest rate of 6.52 percent.)
 
    (c) The acquisition was funded primarily from proceeds received from the
       sale of 2,705,628 shares of common stock (see Note 10). Also included in
       the acquisition, but excluded from this schedule, is (i) Nine Campus
       Drive, which the Operating Partnership has a 50 percent interest through
       an unconsolidated joint venture (see Note 5), and (ii) developable land
       adjacent to the acquired portfolio (see "Redevelopment
       Properties/Developable Land Acquisitions.")
 
    (d) The acquisition was funded with cash and the issuance of common units to
       the seller (see Note 11).
 
    (e) The Operating Partnership may be required to pay additional
       consideration due to earn-out provisions in the agreement. William L.
       Mack, a director and equity holder of the Operating Partnership, was an
       indirect owner of an interest in certain of the buildings contained in
       the Pacifica portfolio. The Operating Partnership is under contract to
       acquire two remaining office buildings, encompassing 95,360 square feet
       (for an aggregate price of approximately $12,300).
 
    (f) The property was acquired subject to a ground lease, which is prepaid
       through 2031, and has two 10-year renewal options, at rent levels as
       defined in the lease agreement.
 
    (g) Also included in the acquisition, but excluded from this schedule, is
       developable land adjacent to the acquired portfolio (see "Redevelopment
       Properties/Developable Land Acquisitions.")
 
    (h) Includes land adjacent to the operating property, which may be
       sub-divided for future development.
 
    (i) The property was acquired through the exercise of a purchase option
       obtained in the RM Transaction. The acquisition was funded with cash, net
       of the repayment by the seller of the remaining balance of the RM Note
       Receivable (see Note 8).
 
    (j) The acquisition was funded with cash as well as the assumption of
       mortgage debt (aggregate estimated fair value of approximately $8,354,
       with weighted average annual effective interest rate of 6.24 percent.)
       The Operating Partnership is under contract to acquire an additional four
       office/ flex properties and has a right of first refusal to acquire six
       additional office/flex properties.
 
    (k) The property was acquired through the exercise of a purchase option
       obtained in the acquisition of the McGarvey portfolio in January 1998.
 
    REDEVELOPMENT PROPERTIES/DEVELOPABLE LAND ACQUISITIONS
 
    On January 23, 1998, the Operating Partnership acquired 10 acres of vacant
land in the Stamford Executive Park, located in Stamford, Fairfield County,
Connecticut for approximately $1,341 funded from the Operating Partnership's
cash reserves. In October 1998, the Operating Partnership completed and placed
in service a 40,000 square-foot office/flex property on the acquired land (see
"Properties Placed in Service.")
 
    On February 2, 1998, the Operating Partnership acquired 2115 Linwood Avenue,
a 68,000 square-foot vacant office building located in Fort Lee, Bergen County,
New Jersey. The building was acquired for approximately $5,164, which was made
available from drawing on one of the Operating Partnership's credit
 
                                       75
<PAGE>
3. ACQUISITIONS/TRANSACTIONS (CONTINUED)
facilities. The Operating Partnership is currently redeveloping the property for
future lease-up and operation.
 
    On March 27, 1998, as part of the purchase of the Prudential Business Campus
(see "Operating Property Acquisitions"), the Operating Partnership acquired
approximately 95 acres of vacant land adjacent to the operating properties for
approximately $27,500.
 
    On June 8, 1998, as part of the Pacifica portfolio-phase II acquisition (see
"Operating Property Acquisitions"), the Operating Partnership acquired vacant
land adjacent to the operating properties for approximately $2,006.
 
    On September 4, 1998, the Operating Partnership acquired approximately 128
acres of vacant land located at the Horizon Center Business Park, Hamilton
Township, Mercer County, New Jersey, through the exercise of a purchase option
obtained in the Operating Partnership's acquisition of the Horizon Center
Business Park in November 1995. The land was acquired for approximately $1,698,
which was funded from the Operating Partnership's cash reserves.
 
    On November 10, 1998, the Operating Partnership acquired approximately 10.1
acres of land located at Three Vaughn Drive, Princeton, Mercer County, New
Jersey. The Operating Partnership acquired the land for approximately $2,146,
which was funded from the Operating Partnership's cash reserves.
 
    On December 3, 1998, the Operating Partnership acquired approximately 2.7
acres of land located at 12 Skyline Drive, Hawthorne, Westchester County, New
York. The Operating Partnership acquired the land for approximately, $1,540,
which was funded from the Operating Partnership's cash reserves.
 
    1997 TRANSACTIONS
 
    On January 31, 1997, the Operating Partnership acquired 65 properties,
aggregating approximately 4.1 million square feet, ("RM Properties") from Robert
Martin Company, LLC and affiliates ("RM") for a total cost of approximately
$450,000. The cost of the transaction ("RM Transaction") was financed through
the assumption of $185,283 of mortgage indebtedness, the payment of
approximately $220,000 in cash, substantially all of which was obtained from the
Operating Partnerhip's cash reserves, and the issuance of 1,401,225 common
units, valued at $43,788.
 
    On December 11, 1997, the Operating Partnership acquired 54 office
properties, aggregating approximately 9.2 million square feet, ("Mack
Properties") from the Mack Company and Patriot American Office Group, pursuant
to a Contribution and Exchange Agreement ("Agreement"), for a total cost of
approximately $1,102,024 ("Mack Transaction"). With the completion of the Mack
Transaction on December 11, 1997, the Cali Realty Corporation name was changed
to Mack-Cali Realty Corporation, and the name of the Operating Partnership was
changed from Cali Realty, L.P. to Mack-Cali Realty, L.P.
 
    The total cost of the Mack Transaction was financed as follows: (i) $498,757
in cash made available from the Operating Partnership's cash reserves and from
the $200,000 Prudential Term Loan (see Note 9), (ii) $291,879 in debt assumed by
the Property Partnerships ("Mack Mortgages"), (iii) the issuance of 1,965,886
common units, valued at approximately $66,373, (iv) the issuance of 15,237
Series A preferred units and 215,325 Series B preferred units, valued at
approximately $236,491 (collectively, the "Preferred Units"), (v) warrants to
purchase 2,000,000 common units ("Unit Warrants"), valued at approximately
$8,524, and (vi) the issuance of Contingent Units (see Note 11).
 
    In accordance with the Agreement, Thomas A. Rizk remained Chief Executive
Officer and resigned as President of the Corporation, and Mitchell E. Hersh was
appointed as President and Chief Operating Officer. The Corporation's other
officers retained their existing positions and responsibilities, except that
 
                                       76
<PAGE>
3. ACQUISITIONS/TRANSACTIONS (CONTINUED)
Brant Cali resigned as Chief Operating Officer and John R. Cali resigned as
Chief Administrative Officer. Brant Cali and John R. Cali remained as officers
of the Corporation as Executive Vice Presidents.
 
    Entering into new employment agreements with the Corporation after the Mack
Transaction were Thomas A. Rizk, Mitchell E. Hersh, Brant Cali and John R. Cali.
Entering into amended and restated employment agreements were Roger W. Thomas,
as Executive Vice President, General Counsel and Secretary, Barry Lefkowitz, as
Executive Vice President and Chief Financial Officer and Timothy M. Jones, as
Executive Vice President.
 
    In connection with the Mack Transaction, under each of the Corporation's
executive officer's then existing employment agreements, due to a change of
control of the Corporation (as defined in each employment agreement), each of
the aforementioned officers received the benefit of the acceleration of (i) the
immediate vesting and issuance of his restricted stock, including tax gross-up
payments associated therewith, (ii) the forgiveness of his Stock Purchase Rights
loan, including tax gross-up payments associated therewith, and (iii) the
vesting of his unvested employee stock options and warrants. Additionally, under
each of Thomas Rizk's, Brant Cali's and John R. Cali's employment agreements
with the Corporation, each of these officers became entitled to receive certain
severance-type payments, as a result of certain provisions in each of their
agreements, triggered as result of the Mack Transaction. Finally, certain
officers and employees of the Corporation were given transaction-based payments
as a reward for their efforts and performance in connection with the Mack
Transaction. The total expense associated with the acceleration of vesting of
restricted stock, the forgiveness of Stock Purchase Rights loans, and the
payment of certain severance-type payments, as well as performance payments and
related tax-obligation payments, which were approved by the Corporation's Board
of Directors and which took place simultaneous with completion of the Mack
Transaction, totaled $45,769. Such expenses are included in non-recurring
merger-related charges for the year ended December 31, 1997, (see Note 10).
 
    In 1997, the Operating Partnership also acquired 13 additional office and
office/flex properties, aggregating approximately 1.5 million square feet, in
nine separate transactions with separate sellers, for an aggregate cost of
approximately $204,446. Such acquisitions were funded primarily from drawings on
the Operating Partnership's credit facilities.
 
    1996 TRANSACTIONS
 
    In 1996, the Operating Partnership acquired 15 office properties and placed
in service two office/flex properties totaling approximately 3.3 million square
feet, for a total cost of approximately $451,623. The acquired and placed in
service properties are all located in New Jersey and Pennsylvania. Concurrently
with the acquisition of 103 Carnegie Center in Princeton, Mercer County, New
Jersey, the Operating Partnership sold its office building at 15 Essex Road in
Paramus, Bergen County, New Jersey. The concurrent transactions with unrelated
parties qualified as a tax-free exchange, as the Operating Partnership used
substantially all of the proceeds from the sale of 15 Essex Road to acquire 103
Carnegie Center.
 
    With respect to the acquisitions completed prior to January 1, 1998, except
for four Properties aggregating $61,994 which are wholly-owned by the Operating
Partnership, all acquisitions were made by the Property Partnerships, in which
the Operating Partnership owns a 99 percent limited partnership interest.
 
4. INVESTMENTS IN UNCONSOLIDATED MAJORITY-OWNED PROPERTY PARTNERSHIPS
 
    Prior to January 1, 1998, the Operating Partnership accounted for its
non-controlling 99 percent limited partner interests in the Property
Partnerships under the equity method of accounting. During 1998, the Operating
Partnership obtained control of the Property Partnerships pursuant to agreements
with the
 
                                       77
<PAGE>
4. INVESTMENTS IN UNCONSOLIDATED MAJORITY-OWNED PROPERTY PARTNERSHIPS
(CONTINUED)
General Partner. Accordingly, the accounts of the Property Partnerships are
consolidated with the Operating Partnership effective January 1, 1998. The
following is the summarized financial data of the Property Partnerships:
 
<TABLE>
<CAPTION>
                                                                                                      DECEMBER 31
                                                                                                          1997
                                                                                                      ------------
<S>                                                                                                   <C>
ASSETS:
Rental property, net................................................................................   $2,461,535
Other assets........................................................................................       52,349
                                                                                                      ------------
Total assets........................................................................................   $2,513,884
                                                                                                      ------------
                                                                                                      ------------
LIABILITIES AND PARTNERS' CAPITAL:
Mortgages and loans payable.........................................................................   $  650,550
Other liabilities...................................................................................       41,720
Partners' capital...................................................................................    1,821,614
                                                                                                      ------------
Total liabilities and partners' capital.............................................................   $2,513,884
                                                                                                      ------------
                                                                                                      ------------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                              YEAR ENDED DECEMBER
                                                                                                      31,
                                                                                             ---------------------
<S>                                                                                          <C>         <C>
                                                                                                1997       1996
                                                                                             ----------  ---------
Rental and other revenues..................................................................  $  241,611  $  93,499
Operating and other expenses...............................................................     (80,839)   (32,662)
Interest expense...........................................................................     (34,380)   (17,205)
Depreciation and amortization..............................................................     (36,546)   (14,679)
Gain on sale of rental property............................................................          --      5,658
Extraordinary item.........................................................................      (6,746)      (287)
                                                                                             ----------  ---------
Net income.................................................................................  $   83,100  $  34,324
                                                                                             ----------  ---------
                                                                                             ----------  ---------
</TABLE>
 
5. INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES
 
    PRU-BETA 3 (NINE CAMPUS DRIVE)
 
    On March 27, 1998, the Operating Partnership acquired a 50 percent interest
in an existing joint venture with The Prudential Insurance Company of America
("Prudential"), known as Pru-Beta 3, which owns and operates Nine Campus Drive,
a 156,495 square-foot office building, located in the Prudential Business Campus
office complex in Parsippany, Morris County, New Jersey, (see Note 3). The
Operating Partnership performs management and leasing services for the property
owned by the joint venture and received $114 in fees for such services in 1998.
 
    HPMC (CONTINENTAL GRAND II/SUMMIT RIDGE/LAVA RIDGE)
 
    On April 23, 1998, the Operating Partnership entered into a joint venture
agreement with HCG Development, L.L.C. and Summit Partners I, L.L.C. to form
HPMC Development Partners, L.P. and, on July 21, 1998, entered into a second
joint venture named HPMC Lava Ridge Partners, L.P. with these same parties. HPMC
Development Partners, L.P.'s efforts have focused on two development projects,
commonly referred to as Continental Grand II and Summit Ridge. Continental Grand
II is a 4.2 acre site located in El Segundo, Los Angeles County, California,
acquired by the venture upon which it has commenced construction of a 237,000
square-foot office property. Summit Ridge is a 7.3 acre site located in San
Diego,
 
                                       78
<PAGE>
5. INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES (CONTINUED)
San Diego County, California, acquired by the venture upon which it has
commenced construction of a 132,000 square-foot office/flex property. HPMC Lava
Ridge Partners, L.P. has commenced construction of three two-story buildings
aggregating 183,200 square-feet of office space on a 12.1 acre site located in
Roseville, Placer County, California. The Operating Partnership is required to
make capital contributions to the ventures totaling up to $26,566, pursuant to
the partnership agreements. Among other things, the partnership agreements
provide for a preferred return on the Operating Partnership's invested capital
in each venture, in addition to 50 percent of such venture's profit above the
preferred returns, as defined in each agreement.
 
    G&G MARTCO (CONVENTION PLAZA)
 
    On April 30, 1998, the Operating Partnership acquired a 49.9 percent
interest in an existing joint venture, known as G&G Martco, which owns
Convention Plaza, a 305,618 square-foot office building, located in San
Francisco, San Francisco County, California. A portion of its initial investment
was financed through the issuance of common units (see Note 11) as well as funds
drawn from the Operating Partnership's credit facilities. The Operating
Partnership performs management and leasing services for the property owned by
the joint venture and received $20 in fees for such services in 1998.
 
    AMERICAN FINANCIAL EXCHANGE L.L.C.
 
    On May 20, 1998, the Operating Partnership entered into a joint venture
agreement with Columbia Development Corp. to form American Financial Exchange
L.L.C. The venture was initially formed to acquire land for future development,
located on the Hudson River waterfront in Jersey City, Hudson County, New
Jersey, adjacent to the Operating Partnership's Harborside property. The
Operating Partnership holds a 50 percent interest in the joint venture. Among
other things, the partnership agreement provides for a preferred return on the
Operating Partnership's invested capital in the venture, in addition to the
Operating Partnership's proportionate share of the venture's profit, as defined
in the agreement. The joint venture acquired land on which it constructed a
parking facility, which is currently leased to a parking operator under a
10-year agreement. Such parking facility serves a ferry service between the
Operating Partnership's Harborside property and Manhattan.
 
    RAMLAND REALTY ASSOCIATES L.L.C. (ONE RAMLAND ROAD)
 
    On August 20, 1998, the Operating Partnership entered into a joint venture
agreement with S.B. New York Realty Corp. to form Ramland Realty Associates
L.L.C. The venture was formed to own, manage and operate One Ramland Road, a
232,000 square-foot office/flex building plus adjacent developable land, located
in Orangeburg, Rockland County, New York. The office/flex building is being
redeveloped for future lease-up and operation. The Operating Partnership holds a
50 percent interest in the joint venture.
 
    ASHFORD LOOP ASSOCIATES L.P. (1001 SOUTH DAIRY ASHFORD/2100 WEST LOOP SOUTH)
 
    On September 18, 1998, the Operating Partnership entered into a joint
venture agreement with Prudential to form Ashford Loop Associates L.P. The
venture was formed to own, manage and operate 1001 South Dairy Ashford, a
130,000 square-foot office building acquired on September 18, 1998 and 2100 West
Loop South, a 168,000 square-foot office building acquired on November 25, 1998,
both located in Houston, Harris County, Texas. The Operating Partnership holds a
20 percent interest in the joint venture. The joint venture may be required to
pay additional consideration due to earn-out provisions in the acquisition
contracts. The Operating Partnership performs management and leasing services
for the properties owned by the joint venture and received $30 in fees for such
services in 1998.
 
                                       79
<PAGE>
SUMMARIES OF UNCONSOLIDATED JOINT VENTURES
 
    The following is a summary of the financial position of the unconsolidated
joint ventures in which the Operating Partnership has investment interests as of
December 31, 1998:
 
<TABLE>
<CAPTION>
                                                                                  AMERICAN
                                                                         G&G      FINANCIAL    RAMLAND    ASHFORD    COMBINED
                                              PRU-BETA 3     HPMC      MARTCO     EXCHANGE     REALTY      LOOP       TOTAL
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
<S>                                           <C>          <C>        <C>        <C>          <C>        <C>        <C>
ASSETS:
Rental property, net........................   $  22,711   $  30,278  $  11,099   $  10,621   $   8,467  $  19,166  $  102,342
Other assets................................       3,995       1,097      4,058         389       1,101        378      11,018
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
Total assets................................   $  26,706   $  31,375  $  15,157   $  11,010   $   9,568  $  19,544  $  113,360
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
Liabilities and partners'/ members' capital:
Mortgage payable............................   $      --   $     632  $  39,762   $      --   $      --  $      --  $   40,394
Other liabilities...........................         484       3,522      2,096          79           6        509       6,696
Partners'/members' capital..................      26,222      27,221    (26,701)     10,931       9,562     19,035      66,270
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
Total liabilities and partners'/members'
  capital...................................   $  26,706   $  31,375  $  15,157   $  11,010   $   9,568  $  19,544  $  113,360
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
Operating Partnership's net investment in
  unconsolidated joint ventures.............   $  17,980   $  17,578  $  10,964   $  10,983   $   4,851  $   4,152  $   66,508
                                              -----------  ---------  ---------  -----------  ---------  ---------  ----------
</TABLE>
 
The following is a summary of the results of operations of the unconsolidated
joint ventures for the period in which the Operating Partnership has investment
interests during the year ended December 31, 1998:
<TABLE>
<CAPTION>
                                                                                          AMERICAN
                                                                                 G&G      FINANCIAL      RAMLAND       ASHFORD
                                                    PRU-BETA 3      HPMC       MARTCO     EXCHANGE       REALTY         LOOP
                                                    -----------  -----------  ---------  -----------  -------------  -----------
<S>                                                 <C>          <C>          <C>        <C>          <C>            <C>
Total revenues....................................   $   3,544    $      --   $   4,103   $     490     $      --     $     659
Operating and other expenses......................      (1,124)          --      (1,704)        (35)           --          (286)
Depreciation and amortization.....................      (1,000)          --        (604)         --            --           (76)
Interest expense..................................          --           --      (2,097)         --            --            --
                                                    -----------         ---   ---------       -----           ---         -----
Net income (loss).................................   $   1,420    $      --   $    (302)  $     455     $      --     $     297
                                                    -----------         ---   ---------       -----           ---         -----
                                                    -----------         ---   ---------       -----           ---         -----
Operating Partnership's equity in earnings (loss)
  of unconsolidated joint ventures................   $     723    $      --   $    (182)  $     455     $      --     $      59
                                                    -----------         ---   ---------       -----           ---         -----
 
<CAPTION>
 
                                                     COMBINED
                                                       TOTAL
                                                    -----------
<S>                                                 <C>
Total revenues....................................   $   8,796
Operating and other expenses......................      (3,149)
Depreciation and amortization.....................      (1,680)
Interest expense..................................      (2,097)
                                                    -----------
Net income (loss).................................   $   1,870
                                                    -----------
                                                    -----------
Operating Partnership's equity in earnings (loss)
  of unconsolidated joint ventures................   $   1,055
                                                    -----------
</TABLE>
 
6. DEFERRED CHARGES AND OTHER ASSETS
 
<TABLE>
<CAPTION>
                                                                                                   DECEMBER 31,
                                                                                               --------------------
<S>                                                                                            <C>        <C>
                                                                                                 1998       1997
                                                                                               ---------  ---------
Deferred leasing costs.......................................................................  $  35,151  $      45
Deferred financing costs.....................................................................      9,962      3,187
                                                                                               ---------  ---------
                                                                                                  45,113      3,232
Accumulated amortization.....................................................................    (13,527)      (490)
                                                                                               ---------  ---------
Deferred charges, net........................................................................     31,586      2,742
Prepaid expenses and other assets............................................................      7,434      1,924
                                                                                               ---------  ---------
Total deferred charges and other assets, net.................................................  $  39,020  $   4,666
                                                                                               ---------  ---------
                                                                                               ---------  ---------
</TABLE>
 
                                       80
<PAGE>
7. RESTRICTED CASH
 
    Restricted cash includes security deposits for the Operating Partnership's
residential properties and certain commercial properties, and escrow and reserve
funds for debt service, real estate taxes, property insurance, capital
improvements, tenant improvements, and leasing costs established pursuant to
certain mortgage financing arrangements, and is comprised of the following:
 
<TABLE>
<CAPTION>
                                                                                                         DECEMBER 31,
                                                                                                    ----------------------
<S>                                                                                                 <C>        <C>
                                                                                                      1998        1997
                                                                                                    ---------     -----
Security deposits.................................................................................  $   5,696   $      --
Escrow and other reserve funds....................................................................        330          --
                                                                                                    ---------         ---
Total restricted cash.............................................................................  $   6,026   $      --
                                                                                                    ---------         ---
                                                                                                    ---------         ---
</TABLE>
 
8. MORTGAGE NOTE RECEIVABLE
 
    In connection with the RM Transaction on January 31, 1997, the Operating
Partnership provided a $11,600 non-recourse mortgage loan ("RM Note Receivable")
to entities controlled by the RM principals, which bore interest at an annual
rate of 450 basis points over one-month London Inter-Bank Offered Rate ("LIBOR")
(5.75 percent at December 31, 1998). The RM Note Receivable, which was secured
by two properties under purchase options ("Option Properties") and guaranteed by
certain of the RM principals, was scheduled to mature on February 1, 2000. In
conjunction with the acquisition of one of the Option Properties on August 15,
1997, the sellers of the property, certain RM principals, prepaid $4,350 of the
RM Note Receivable. The RM Note Receivable was subsequently prepaid in full in
connection with the acquisition of the second Option Property on September 15,
1998 (see Note 3). The Operating Partnership received a prepayment fee of $152
with the retirement of the RM Note Receivable.
 
    On March 6, 1998, prior to the completion of the Pacifica portfolio-phase I
acquisition, the Operating Partnership provided a $20,000 mortgage loan to an
entity controlled by certain principals of Pacifica Holding Company. The
mortgage loan was secured by an office property in California and bore interest
at an annual rate of 9.25 percent. The mortgage loan was subsequently prepaid in
full by the borrower on June 10, 1998. The Operating Partnership received a
prepayment fee of $200 with the retirement of the mortgage loan.
 
9. MORTGAGES AND LOANS PAYABLE
 
<TABLE>
<CAPTION>
                                                                                                DECEMBER 31,
                                                                                          ------------------------
<S>                                                                                       <C>           <C>
                                                                                              1998         1997
                                                                                          ------------  ----------
Prudential Mortgages....................................................................  $    210,265  $  200,000
TIAA Mortgage...........................................................................       185,283          --
Harborside Mortgages....................................................................       150,000          --
Mitsubishi Mortgages....................................................................        72,204          --
CIGNA Mortgages.........................................................................        46,989          --
Other Mortgages.........................................................................        78,440          --
Revolving Credit Facilities.............................................................       671,600     122,100
Contingent Obligation...................................................................         6,150          --
                                                                                          ------------  ----------
Total mortgages and loans payable.......................................................  $  1,420,931  $  322,100
                                                                                          ------------  ----------
                                                                                          ------------  ----------
</TABLE>
 
                                       81
<PAGE>
9. MORTGAGES AND LOANS PAYABLE (CONTINUED)
PRUDENTIAL MORTGAGES
 
    The Operating Partnership has mortgage debt from Prudential and its
subsidiaries ("Prudential Mortgages") aggregating $210,265 and $200,000 as of
December 31, 1998 and 1997, respectively, comprised of the following:
 
    On April 30, 1998, the Operating Partnership obtained a $150,000,
interest-only, non-recourse mortgage loan from Prudential ("$150,000 Prudential
Mortgage Loan"). The loan, which is secured by 12 of the Operating Partnership's
properties, has an effective annual interest rate of 7.10 percent and a
seven-year term. The Operating Partnership has the option to convert the
mortgage loan to unsecured debt as a result of the achievement of an investment
grade credit rating. The mortgage loan is prepayable in whole or in part subject
to certain provisions, including yield maintenance. The proceeds of the new loan
were used, along with funds drawn from one of the Operating Partnership's credit
facilities, to retire the Prudential Term Loan (as defined below), as well as
approximately $48,224 of certain other mortgages.
 
    The Operating Partnership also has certain other non-recourse mortgage debt,
aggregating $60,265 and $62,205 in principal as of December 31, 1998 and 1997,
respectively, with Prudential. Such mortgages, which are secured by three
properties, bear interest at a weighted average fixed rate of 8.25 percent per
annum. The mortgages require monthly payments of interest and principal, and
mature between October 2003 and October 2005.
 
    On December 10, 1997, the Operating Partnership obtained a $200,000 term
loan ("Prudential Term Loan") from Prudential Securities Corp. ("PSC"). The
proceeds of the loan were used to fund a portion of the cash consideration in
completion of the Mack Transaction. The loan had a one-year term and interest
payments were required monthly at an interest rate of 110 basis points over
one-month LIBOR. The Prudential Term Loan was retired in April 1998,
simultaneous with the Operating Partnership obtaining the $150,000 Prudential
Mortgage Loan. On account of prepayment fees, loan origination fees, legal fees
and other costs incurred in the retirement of the Prudential Term Loan, an
extraordinary loss of $52 was recorded for the year ended December 31, 1998.
 
TIAA MORTGAGE
 
    In connection with the RM Transaction, on January 31, 1997, one of the
Property Partnerships assumed a $185,283 non-recourse mortgage loan with
Teachers Insurance and Annuity Association of America ("TIAA"), with interest
only payable monthly at a fixed annual rate of 7.18 percent (the "TIAA
Mortgage"). The TIAA Mortgage is secured and cross-collateralized by 43 of the
RM Properties and matures in December 2003. The Property Partnership has the
option to convert, without any yield maintenance obligation or prepayment
premium, the TIAA Mortgage to unsecured public debt as a result of the
achievement of an investment grade credit rating. The TIAA Mortgage is
prepayable in whole or in part subject to certain provisions, including yield
maintenance which is 100 basis points over United States Treasury obligations of
similar maturity to the remaining maturity of the TIAA Mortgage at the time
prepayment is being sought.
 
                                       82
<PAGE>
HARBORSIDE MORTGAGES
 
    In connection with the acquisition of Harborside Financial Center
("Harborside") on November 4, 1996, one of the Property Partnerships assumed
existing mortgage debt and was provided seller-financed mortgage debt
aggregating $150,000. The existing non-recourse mortgage financing, with a
principal balance of $101,852 and $104,768 as of December 31, 1998 and 1997,
respectively, bears interest at an annual fixed rate of 7.32 percent and matures
in January 2006. The seller-provided mortgage financing, with a principal
balance of $48,148 and $45,232 as of December 31, 1998 and 1997, respectively,
matures in January 2006 and currently bears interest at an annual rate of 6.99
percent. The interest rate on the seller-provided financing will be reset at the
end of the third and sixth loan years based on the yield of the interpolated
three-year treasury note at that time with spreads of 110 basis points in years
four through six and 130 basis points in years seven through maturity. See
"Interest Rate Contracts."
 
MITSUBISHI MORTGAGES
 
    The Property Partnerships have non-recourse, variable-rate mortgage debt
aggregating $72,204 in principal as of December 31, 1998 and 1997 with
Mitsubishi Trust and Banking Corporation ("Mitsubishi Mortgages"). Such
mortgages assumed in the Mack Transaction, which are secured by two of the Mack
Properties, bear interest at a variable rate of 65 basis points over LIBOR and
mature between January 2008 and January 2009.
 
CIGNA MORTGAGES
 
    The Property Partnerships have non-recourse mortgage debt aggregating
$46,989 and $86,650 in principal as of December 31, 1998 and 1997, respectively,
with Connecticut General Life Insurance Company ("CIGNA Mortgages"). Such
mortgages assumed in the Mack Transaction, which are secured by three of the
Mack Properties, bear interest at a weighted average annual fixed rate of 7.79
percent and require monthly payments of interest and principal on various term
amortization schedules. The various mortgages mature between March 1999 and
October 2003. In 1998, the Operating Partnership retired certain of the CIGNA
Mortgages with an aggregate principal balance of $37,773, of which $27,886 was
made available from the $150,000 Prudential Mortgage Loan and $9,887 from
drawing on the Operating Partnership's credit facilities.
 
OTHER MORTGAGES
 
    The Property Partnerships have mortgage debt aggregating $78,440 and $88,474
in principal as of December 31, 1998 and 1997, respectively, with six different
lenders, all of which were assumed in the Mack Transaction as well as certain
1998 property acquisitions, and are secured by 11 individual properties ("Other
Mortgages"). The Other Mortgages bear interest at a weighted average annual
fixed effective rate of 6.95 percent. Certain of the mortgages require monthly
payments of principal, in addition to interest on various term amortization
schedules. The Other Mortgages mature between May 1999 and October 2005.
Variable rate debt included in Other Mortgages at December 31, 1997, aggregating
$20,338, which bore interest at 115 basis points over LIBOR, was retired in
April 1998, simultaneous with the Operating Partnership obtaining the $150,000
Prudential Mortgage Loan. On account of prepayment fees, legal fees and other
costs incurred in the retirement of certain of the Other Mortgages in April
1998, an extraordinary loss of $140 was recorded for the year ended December 31,
1998.
 
REVOLVING CREDIT FACILITIES
 
    ORIGINAL UNSECURED FACILITY
 
    On August 6, 1997, the Operating Partnership obtained an unsecured revolving
credit facility ("Original Unsecured Facility") in the amount of $400,000 from a
group of 13 lender banks. The facility carried a three-year term and bore
interest at 125 basis points over one-month LIBOR.
 
                                       83
<PAGE>
    The terms of the Original Unsecured Facility included certain restrictions
and covenants which limited, among other things, dividend payments and
additional indebtedness and which required compliance with specified financial
ratios and other financial measurements. The facility also required a fee on the
unused balance payable quarterly in arrears, at a rate ranging from one-eighth
of one percent to one-quarter of one percent of such balance, depending on the
level of borrowings outstanding in relation to the total facility commitment.
 
    The Operating Partnership had outstanding borrowings of $122,100 at December
31, 1997, under the Original Unsecured Facility. The Original Unsecured Facility
was repaid in full and retired in connection with the Operating Partnership
obtaining the 1998 Unsecured Facility in April 1998, as described below. On
account of prepayment fees, loan origination fees, legal fees and other costs
incurred in the retirement of the Original Unsecured Facility, an extraordinary
loss of $2,478 was recorded for the year ended December 31, 1998.
 
    1998 UNSECURED FACILITY
 
    On April 17, 1998, the Operating Partnership repaid in full and terminated
the Original Unsecured Facility and obtained a new unsecured revolving credit
facility ("1998 Unsecured Facility") in the amount of $870,000 from a group of
26 lender banks. In July 1998, the 1998 Unsecured Facility was expanded to
$900,000 with the addition of two new lender banks into the facility, bringing
the total number of participants to 28. In December 1998, the 1998 Unsecured
Facility was further expanded to $1,000,000. The 1998 Unsecured Facility has a
three-year term and bore interest at 110 basis points over LIBOR. In November
1998, with the Operating Partnership's achievement of investment grade unsecured
debt ratings, the interest rate was reduced to 90 basis points over LIBOR.
 
    The terms of the 1998 Unsecured Facility include certain restrictions and
covenants which limit, among other things, the payment of dividends (as
discussed below), the incurrence of additional indebtedness, the incurrence of
liens and the disposition of assets, and which require compliance with financial
ratios relating to the maximum leverage ratio, the maximum amount of secured
indebtedness, the minimum amount of tangible net worth, the minimum amount of
debt service coverage, the minimum amount of fixed charge coverage, the maximum
amount of unsecured indebtedness, the minimum amount of unencumbered property
debt service coverage and certain investment limitations. The dividend
restriction referred to above provides that, except to enable the Corporation to
continue to qualify as a REIT under the Code, the Corporation will not during
any four consecutive fiscal quarters make distributions with respect to common
stock or other equity interests in an aggregate amount in excess of 90 percent
of funds from operations for such period, subject to certain other adjustments.
The 1998 Unsecured Facility also requires a 17.5 basis point fee on the unused
balance payable quarterly in arrears.
 
    The lending group for the 1998 Unsecured Facility consists of: The Chase
Manhattan Bank, as administrative agent; Fleet National Bank, as syndication
agent; PNC Bank, N.A. and NationsBank, as documentation agents; Bankers Trust,
Commerzbank, AG, The First National Bank of Chicago and First Union National
Bank, as managing agents; Creditanstalt Corporate Finance, Inc., Dresdner Bank,
AG, European American Bank, HypoBank, Societe Generale and Summit Bank, as
co-agents; and Kredietbank, N.V., Key Bank N.A., Mellon Bank, N.A., The Bank of
New York, Citizens Bank of Rhode Island, Crestar Bank, DG Bank Deutsche, The
Tokai Bank Limited, USTrust, Bayerische Landesbank Girozentrale, LaSalle
National Bank, Erste Bank, BankLeumi USA and Bank One, Arizona, NA.
 
    PRUDENTIAL FACILITY
 
    The Operating Partnership has a revolving credit facility ("Prudential
Facility") from PSC in the amount of $100,000, which currently bears interest at
110 basis points over one-month LIBOR, with a maturity date of December 31,
1999. The Prudential Facility is a recourse liability of the Operating
Partnership and is secured by the Operating Partnership's equity interest in
Harborside. The Prudential
 
                                       84
<PAGE>
Facility limits the ability of the Operating Partnership to make any
distributions during any fiscal quarter in an amount in excess of 100 percent of
the Operating Partnership's available funds from operations for the immediately
preceding fiscal quarter (except to the extent such excess distributions or
dividends are attributable to gains from the sale of the Operating Partnership's
assets or are required for the Corporation to maintain its status as a REIT
under the Code); provided, however, that the Operating Partnership may make
distributions and pay dividends in excess of 100 percent of available funds from
operations for the preceding fiscal quarter for not more than three consecutive
quarters. In addition to the foregoing, the Prudential Facility limits the liens
placed upon the subject property and certain collateral, the use of proceeds
from the Prudential Facility, and the maintenance of ownership of the subject
property and assets derived from said ownership. The Operating Partnership had
no outstanding borrowings at December 31, 1998 and 1997 under the Prudential
Facility.
 
CONTINGENT OBLIGATION
 
    As part of the Harborside acquisition in November 1996, a Property
Partnership agreed to make payments (with an estimated net present value of
approximately $5,252 at acquisition date) to the seller for development rights
("Contingent Obligation") if and when the Property Partnership commences
construction on the acquired site during the next several years. However, the
agreement provides, among other things, that even if the Property Partnership
does not commence construction, the seller may nevertheless require the Property
Partnership to acquire these rights during the six-month period after the end of
the sixth year. After such period, the seller's option lapses, but any
development in years 7 through 30 will require a payment, on an increasing
scale, for the development rights. The Property Partnership is currently in the
pre-development phase of a long-range plan to develop the Harborside site on a
multi-property, multi-use basis.
 
    For the year ended December 31, 1998, interest was imputed on the Contingent
Obligation, thereby increasing the balance of the Contingent Obligation from
$5,734 as of December 31, 1997 to $6,150 as of December 31, 1998.
 
MORTGAGE FINANCING
 
    Concurrent with the Corporation's initial public offering in August 1994
("IPO"), the Corporation's initial operating subsidiaries, which are certain
entities included in the Property Partnerships, issued five-year mortgage notes
with an aggregate principal balance of $144,500 secured and cross-collateralized
by the original properties included in the IPO ("Original Properties") to an
affiliate ("PSI") of Prudential Securities Inc. PSI then issued commercial
mortgage pay-through bonds ("Bonds") collateralized by the mortgage notes. Bonds
with an aggregate principal balance of $70,000 were purchased by unrelated third
parties. Bonds with an aggregate principal balance of $74,500 were purchased by
the Operating Partnership. As a result, the Corporation's combined initial
mortgage financing was $70,000 (the "Mortgage Financing"). Approximately $38,000
of the $70,000 was guaranteed under certain conditions by certain partners of
the Cali Group partnerships which owned the Original Properties. The Mortgage
Financing required monthly payments of interest only, with all principal and any
accrued but unpaid interest due in August 1999. $62,000 of loans bore interest
equal to a fixed rate of 8.02 percent per annum and the remaining $82,500 bore
interest at floating rates ranging from 100 basis points over one-month LIBOR to
290 basis points over one month LIBOR with a lifetime interest rate cap of 11.6
percent. Pursuant to the terms of the loans, the Property Partnerships were
required to escrow $143 per month for tenant improvements and leasing
commissions and $53 per month for capital improvements.
 
    In advance of the sale of 15 Essex Road, on March 12, 1996, $5,492 of the
loan was prepaid. On August 12, 1997, the Property Partnerships retired certain
Mortgage Financing and the Bonds held by the Operating Partnership with funds
made available primarily from drawing on the Original Unsecured Facility. On
account of prepayment fees, loan origination fees, legal fees and other costs
incurred in the retirement of the Mortgage Financing, an extraordinary loss of
$6,746 (including the prepayment of $3,425
 
                                       85
<PAGE>
paid to the Operating Partnership described below), was recorded by the Property
Partnerships for the year ended December 31, 1997. Prepayment fees of $3,425
were paid to the Operating Partnership to retire the $74,500 Bonds held by the
Operating Partnership, which was recorded by the Operating Partnership as
interest income in the accompanying financial statements.
 
INTEREST RATE CONTRACTS
 
    On May 24, 1995, the Operating Partnership entered into an interest rate
swap agreement with a commercial bank. The swap agreement fixes the Operating
Partnership's one-month LIBOR base to 6.285 percent per annum on a notional
amount of $24,000 through August 1999.
 
    On January 23, 1996, the Operating Partnership entered into an interest rate
swap agreement with a commercial bank. The swap agreement fixed the Operating
Partnership's one-month LIBOR base to 5.265 percent per annum on a notional
amount of $26,000. The swap agreement expired in January 1999.
 
    On November 20, 1997, the Operating Partnership entered into a forward
treasury rate lock agreement with a commercial bank. The agreement locked an
interest rate of 5.88 percent per annum for the interpolated seven-year U.S.
Treasury Note effective March 1, 1998, on a notional amount of $150,000. The
agreement was used to fix the interest rate on the $150,000 Prudential Mortgage
Loan. The Operating Partnership settled the agreement on March 2, 1998 for
$2,035 which is being amortized to interest expense over the term of the
$150,000 Prudential Mortgage Loan.
 
    On October 1, 1998, the Operating Partnership entered into a forward
treasury rate lock agreement with a commercial bank. The agreement locked an
interest rate of 4.089 percent per annum for the three-year U.S. Treasury Note
effective November 4, 1999, on a notional amount of $50,000. The agreement will
be used to fix the Index Rate on $50,000 of the Harborside mortgages, for which
the Operating Partnership's interest rate re-sets for three years beginning
November 4, 1999 to the three-year U.S. Treasury Note plus 110 basis points (see
"Harborside Mortgages").
 
    The Operating Partnership is exposed to credit loss in the event of
non-performance by the other parties to the interest rate contracts. However,
the Operating Partnership does not anticipate non-performance by either of the
counter parties. The Operating Partnership is also exposed to market risk from
movement in interest rates pertaining to the forward treasury rate lock
agreement.
 
SCHEDULED PRINCIPAL PAYMENTS
 
    Scheduled principal payments and related weighted average interest rates on
the mortgages and loans payable, as of December 31, 1998, are as follows:
 
<TABLE>
<CAPTION>
                                                                                                  WEIGHTED AVG.
                                                SCHEDULED     PRINCIPAL                         INTEREST RATE OF
YEAR                                           AMORTIZATION   MATURITIES        TOTAL         FUTURE REPAYMENTS(A)
- ---------------------------------------------  ------------  ------------  ----------------  -----------------------
<S>                                            <C>           <C>           <C>               <C>
1999.........................................   $    3,653   $     51,797  $         55,450              7.36%
2000.........................................        3,651          5,418             9,069              7.30%
2001.........................................        3,792        675,811           679,603              6.66%
2002.........................................        3,969          7,814            11,783              7.10%
2003.........................................        4,315        206,971           211,286              7.31%
Thereafter...................................        5,279        448,461           453,740              7.10%
                                               ------------  ------------  ----------------               ---
Totals/Weighted Average......................   $   24,659   $  1,396,272  $      1,420,931              6.93%
                                               ------------  ------------  ----------------               ---
                                               ------------  ------------  ----------------               ---
</TABLE>
 
- ------------------------
 
    (a) Assumes LIBOR rate at December 31, 1998 of 5.75 percent in calculating
       credit line and other variable rate debt interest rates.
 
                                       86
<PAGE>
LOAN COMMITMENTS
 
    The Operating Partnership has obtained mortgage commitments amounting to
$45,500 to refinance two of the CIGNA Mortgages with principal balances
aggregating $35,940 maturing in 1999. The new mortgages will have a weighted
average effective interest rate of 6.91 percent per annum, versus the average
rate of 7.60 percent per annum for the maturing mortgages.
 
CASH PAID FOR INTEREST & INTEREST CAPITALIZED
 
    Cash paid for interest for the years ended December 31, 1998, 1997 and 1996
was $92,441, $8,417 and $4,591, respectively. Interest capitalized by the
Operating Partnership for the years ended 1998, 1997 and 1996 was $3,547, $820
and $118, respectively.
 
10. PARTNERS' CAPITAL
 
    Partners' capital in the accompanying financial statements of the Operating
Partnership, prior to August 21, 1998, relates to common units held by the
Corporation in the Operating Partnership, in addition to certain unit warrants
in the Operating Partnership issued in conjunction with the Mack Transaction.
Subsequent to August 21, 1998, partners' capital also includes common units held
by the limited partners and Preferred Units held by the preferred unitholders.
 
    Net income allocated to the preferred unitholders and limited partners in
the accompanying Statement of Partners' Capital reflects their pro-rata share of
net income and distributions subsequent to August 21, 1998. Net income and
distributions for the period prior to August 21, 1998 is included in the changes
in redeemable partnership units (see Note 11).
 
COMMON STOCK
 
    On May 15, 1997, the stockholders of the Corporation approved an increase in
the authorized shares of common stock in the Corporation to 190,000,000.
 
    On October 15, 1997, the Corporation completed an underwritten public offer
and sale of 13,000,000 shares (the "1997 Offering") of its common stock. The
Corporation received approximately $489,116 in net proceeds (after offering
costs) from the 1997 Offering. The Corporation used $160,000 of such proceeds to
repay outstanding borrowings on its Original Unsecured Facility and the
remainder of the proceeds to fund a portion of the purchase price of the Mack
Transaction, for other potential acquisitions, and for general corporate
purposes.
 
    On February 25, 1998, the Corporation completed an underwritten public offer
and sale of 2,500,000 shares of its common stock and used the net proceeds,
which totaled approximately $92,194 (after offering costs) to pay down a portion
of its outstanding borrowings under the Operating Partnership's credit
facilities and fund the acquisition of 10 Mountainview Road (see Note 3).
 
    On March 18, 1998, in connection with the acquisition of Prudential Business
Campus, the Corporation completed an offer and sale of 2,705,628 shares of its
common stock using the net proceeds of approximately $99,899 (after offering
costs) in the funding of such acquisition (see Note 3).
 
    On March 27, 1998, the Corporation completed an underwritten public offer
and sale of 650,407 shares of its common stock and used the net proceeds, which
totaled approximately $23,690 (after offering costs) to pay down a portion of
its outstanding borrowings under the Operating Partnership's credit facilities.
 
    On April 29, 1998, the Corporation completed an underwritten offer and sale
of 994,228 shares of its common stock and used the net proceeds, which totaled
approximately $34,570 (after offering costs), primarily to pay down a portion of
its outstanding borrowings under the Operating Partnership's credit facilities.
 
                                       87
<PAGE>
    On May 29, 1998, the Corporation completed an underwritten offer and sale of
984,615 shares of its common stock and used the net proceeds, which totaled
approximately $34,100 (after offering costs), primarily to pay down a portion of
its outstanding borrowings under the Operating Partnership's credit facilities.
 
    On December 31, 1998, the Corporation completed an offer and sale of 132,710
shares of its common stock, using the net proceeds of approximately $3,940 for
general corporate purposes.
 
    The proceeds of the above offerings were contributed by the Corporation to
the Operating Partnership in exchange for units.
 
    On August 6, 1998, the Board of Directors of the Corporation authorized a
share repurchase program ("Repurchase Program") under which the Corporation was
permitted to purchase up to $100,000 of the Corporation's outstanding common
stock. Purchases could be made from time to time in open market transactions at
prevailing prices or through privately negotiated transactions. For the year
ended December 31, 1998, the Corporation purchased, for constructive retirement,
854,700 shares of its outstanding common stock for an aggregate cost of
approximately $25,058. Concurrent with these purchases, the Corporation sold to
the Operating Partnership 854,700 common units for approximately $25,058.
 
REGISTRATION STATEMENT
 
    The Operating Partnership filed a shelf registration statement with the
Securities and Exchange Commission ("SEC") for an aggregate of $2.0 billion in
debt securities, preferred stock and preferred stock represented by depositary
shares, which was declared effective in September 1998.
 
STOCK OPTION PLANS
 
    In 1994, and as subsequently amended, the Corporation established the
Mack-Cali Employee Stock Option Plan ("Employee Plan") and the Mack-Cali
Director Stock Option Plan ("Director Plan") under which a total of 5,380,188
shares (subject to adjustment) of the Corporation's common stock have been
reserved for issuance (4,980,188 shares under the Employee Plan and 400,000
shares under the Director Plan). Stock options granted under the Employee Plan
in 1994 and 1995 become exercisable over a three-year period and those options
granted under the Employee Plan in 1998, 1997 and 1996 become exercisable over a
five-year period. All stock options granted under the Director Plan become
exercisable in one year. All options were granted at the fair market value at
the dates of grant and have terms of ten years. As of December 31, 1998 and
1997, the stock options outstanding had a weighted average remaining contractual
life of approximately 8.5 and 9.0 years, respectively.
 
    As a result of certain provisions contained in certain of the Corporation's
executive officers' employment agreements, on December 11, 1997, the Mack
Transaction triggered the accelerated vesting of unvested stock options held by
such officers on that date.
 
                                       88
<PAGE>
    Information regarding the Corporation's stock option plans is summarized
below:
 
<TABLE>
<CAPTION>
                                                                                                          WEIGHTED
                                                                                               SHARES      AVERAGE
                                                                                               UNDER      EXERCISE
                                                                                              OPTIONS       PRICE
                                                                                             ----------  -----------
<S>                                                                                          <C>         <C>
Outstanding at January 1, 1995.............................................................     625,000   $   17.23
    Granted................................................................................     230,200       17.69
    Exercised..............................................................................          --          --
    Lapsed or canceled.....................................................................      (3,588)      17.25
                                                                                             ----------  -----------
Outstanding at December 31, 1995...........................................................     851,612       17.36
    Granted................................................................................     809,700       23.97
    Exercised..............................................................................    (126,041)      17.25
    Lapsed or canceled.....................................................................      (7,164)      19.52
                                                                                             ----------  -----------
Outstanding at December 31, 1996...........................................................   1,528,107       20.86
    Granted................................................................................   2,126,538       37.35
    Exercised..............................................................................    (337,282)      21.33
    Lapsed or canceled.....................................................................     (30,073)      22.62
                                                                                             ----------  -----------
Outstanding at December 31, 1997...........................................................   3,287,290       31.47
    Granted................................................................................   1,048,620       35.90
    Exercised..............................................................................    (267,660)      20.47
    Lapsed or canceled.....................................................................    (128,268)      36.61
                                                                                             ----------  -----------
Outstanding at December 31, 1998...........................................................   3,939,982   $   33.22
                                                                                             ----------  -----------
                                                                                             ----------  -----------
Options exercisable at December 31, 1997...................................................   1,004,618   $   25.22
Options exercisable at December 31, 1998...................................................   1,334,137   $   27.84
                                                                                             ----------  -----------
Available for grant at December 31, 1997...................................................   1,629,575
Available for grant at December 31, 1998...................................................     709,223
                                                                                             ----------  -----------
</TABLE>
 
    The weighted average fair value of options granted during 1998, 1997 and
1996 were $5.59, $6.66 and $2.41 per option, respectively. The fair value of
each significant option grant is estimated on the date of grant using the
Black-Scholes model. The following weighted average assumptions are included in
the Corporation's fair value calculations of stock options:
 
<TABLE>
<CAPTION>
                                                                                             1998       1997       1996
                                                                                           ---------  ---------  ---------
<S>                                                                                        <C>        <C>        <C>
Expected life (in years).................................................................          6          6          6
Risk-free interest rate..................................................................       5.41%      5.84%      6.11%
Volatility...............................................................................      23.37%     23.76%     19.14%
Dividend yield...........................................................................       5.78%      5.29%      7.58%
</TABLE>
 
STOCK WARRANTS
 
    On January 31, 1997, in conjunction with the completion of the RM
Transaction, the Corporation granted a total of 400,000 warrants to purchase an
equal number of shares of common stock ("Stock Warrants") at $33 per share (the
market price at date of grant) to Timothy Jones, Brad Berger and certain other
Corporation employees formerly with RM. Such warrants vest equally over a
three-year period and have a term of ten years. The unvested warrants held by
Timothy Jones and Brad Berger became immediately exercisable on December 11,
1997 as a result of provisions contained in their employment agreements, which
were triggered by the Mack Transaction.
 
    On December 12, 1997, in conjunction with the completion of the Mack
Transaction, the Corporation granted a total of 514,976 Stock Warrants to
purchase an equal number of shares of common stock at
 
                                       89
<PAGE>
$38.75 per share (the market price at date of grant) to Mitchell Hersh, and
certain Corporation executives formerly with the Patriot American Office Group.
Such warrants vest equally over a five-year period and have a term of ten years.
 
    As of December 31, 1998, there were 914,976 Stock Warrants outstanding, of
which 565,991 were exercisable. As of December 31, 1998, no vested Stock
Warrants were exercised or canceled.
 
    The weighted-average fair value of warrants granted during 1997 were $6.27
per warrant. No warrants were granted in 1998 or 1996. The fair value of each
warrant grant is estimated on the date of grant using the Black-Scholes model.
The following weighted average assumptions are included in the Corporation's
fair value calculation of warrants granted during 1997:
 
<TABLE>
<S>                                                                    <C>
Expected life (in years).............................................          6
Risk-free interest rate..............................................       5.96%
Volatility...........................................................      22.77%
Dividend yield.......................................................       5.29%
</TABLE>
 
FASB NO. 123
 
    Under the above models, the value of stock options and warrants granted
during 1998, 1997 and 1996 totaled approximately $5,281, $19,750 and $1,955,
respectively, which would be amortized ratably on a pro forma basis over the
appropriate vesting period. Had the Operating Partnership determined
compensation cost for these granted securities in accordance with FASB No. 123,
the Operating Partnership's pro forma net income (loss) and basic income (loss)
per unit and diluted income (loss) per unit share would have been $125,964,
$1.99 and $1.97 in 1998, ($2,425), ($0.06) and ($0.06) in 1997 and $36,115,
$1.71 and $1.67 in 1996, respectively.
 
STOCK COMPENSATION
 
    In January 1997, the Corporation entered into employment contracts with
seven of its key executives which provided for, among other things, compensation
in the form of stock awards ("Restricted Stock Awards") and Corporation-financed
stock purchase rights ("Stock Purchase Rights"), and associated tax obligation
payments. In connection with the Restricted Stock Awards, the executives were to
receive 199,070 shares of the Corporation's common stock vesting over a
five-year period contingent on the Corporation meeting certain performance
objectives. Additionally, pursuant to the terms of the Stock Purchase Rights,
the Corporation provided fixed rate, non-recourse loans, aggregating $4,750, to
such executives to finance their purchase of 152,000 shares of the Corporation's
common stock, which the Corporation agreed to forgive ratably over five years,
subject to continued employment. Such loans were for amounts equal to the fair
market value of the associated shares at the date of grant. Subsequently, from
April 18, 1997 through April 24, 1997, the Corporation purchased, for
constructive retirement, 152,000 shares of its outstanding common stock for
$4,680. The excess of the purchase price over par value was recorded as a
reduction to additional paid-in capital. Concurrent with this purchase, the
Corporation sold to the Operating Partnership 152,000 common units for $4,680.
 
    The value of the Restricted Stock Awards and the balance of the loans
related to the Stock Purchase Rights at the grant date were recorded as
unamortized stock compensation in stockholders' equity. As a result of
provisions contained in certain of the Corporation's executive officers'
employment agreements, which were triggered by the Mack Transaction on December
11, 1997, the loans provided by the Corporation under the Stock Purchase Rights
were forgiven by the Corporation, and the vesting and issuance of the restricted
stock issued under the Restricted Stock Awards was accelerated, and related tax
 
                                       90
<PAGE>
obligation payments were made. As a result, the accelerated cost of $16,788
affecting the stock compensation described above was included in non-recurring
merger-related charges for the year ended December 31, 1997. With such
accelerated vestings, there was no remaining balance in unamortized stock
compensation as of December 31, 1997.
 
    Included in general and administrative expense for the year ended December
31, 1997 was $2,257 relating to the normal cost of Restricted Stock Awards and
Stock Purchase Rights.
 
EARNINGS PER UNIT
 
    FASB No. 128 requires a dual presentation of basic and diluted EPU on the
face of the income statement for all companies with complex capital structures
even where the effect of such dilution is not material. Basic EPU excludes
dilution and is computed by dividing net income available to common unitholders
by the weighted average number of units outstanding for the period. Diluted EPU
reflects the potential dilution that could occur if securities or other
contracts to issue common units were exercised or converted into common units.
 
    The following information presents the Operating Partnership's results for
the years ended December 31, 1998, 1997 and 1996 in accordance with FASB No.
128.
<TABLE>
<CAPTION>
                                                                          YEAR ENDED DECEMBER 31,
                                              --------------------------------------------------------------------------------
<S>                                           <C>          <C>           <C>          <C>            <C>          <C>
                                                        1998                        1997                       1996
                                              -------------------------  --------------------------  -------------------------
 
<CAPTION>
                                               BASIC EPU   DILUTED EPU    BASIC EPU    DILUTED EPU    BASIC EPU   DILUTED EPU
                                              -----------  ------------  -----------  -------------  -----------  ------------
<S>                                           <C>          <C>           <C>          <C>            <C>          <C>
Net income..................................   $ 132,481    $  132,481    $   2,133     $   2,133     $  36,618    $   36,618
Weighted average units......................      63,438        63,893       43,356        44,409        21,171        21,651
                                              -----------  ------------  -----------       ------    -----------  ------------
Per Unit....................................   $    2.09    $     2.07    $    0.05     $    0.05     $    1.73    $     1.69
                                              -----------  ------------  -----------       ------    -----------  ------------
                                              -----------  ------------  -----------       ------    -----------  ------------
</TABLE>
 
    The following schedule reconciles the units used in the basic EPU
calculation to the units used in the diluted EPU calculation.
 
<TABLE>
<CAPTION>
                                                                                           YEAR ENDED DECEMBER 31,
                                                                                       -------------------------------
<S>                                                                                    <C>        <C>        <C>
                                                                                         1998       1997       1996
                                                                                       ---------  ---------  ---------
Basic EPU Units:.....................................................................     63,438     43,356     21,172
Add: Stock options...................................................................        411        579        264
    Restricted Stock Awards..........................................................         --        188         --
    Stock Warrants...................................................................         44         33         --
    Redeemable Partnership Units.....................................................         --        253        216
                                                                                       ---------  ---------  ---------
Diluted EPU Units:...................................................................     63,893     44,409     21,652
                                                                                       ---------  ---------  ---------
                                                                                       ---------  ---------  ---------
</TABLE>
 
    The Preferred Units issued in 1998 and 1997 and Contingent Units issued in
1997 were not included in the computation of diluted EPU as such units were
anti-dilutive during the period.
 
    Pursuant to the Repurchase Program, during 1998, the Corporation purchased
for constructive retirement, 854,700 shares of its outstanding common stock for
approximately $25,058.
 
11. REDEEMABLE PARTNERSHIP UNITS
 
    The outstanding preferred and common units, excluding those common units
held by the Corporation, have been classified as redeemable partnership units
outside of permanent partners' capital in the accompanying December 31, 1997
balance sheet of the Operating Partnership. These units were initially recorded
at fair value and subsequently adjusted based on the fair value at the balance
sheet date as measured by the closing price of the Corporation's common stock on
that date multiplied by the total number of units outstanding.
 
                                       91
<PAGE>
11. REDEEMABLE PARTNERSHIP UNITS (CONTINUED)
    Effective August 21, 1998, pursuant to an amendment to the Operating
Partnership's partnership agreement, in which the Operating Partnership obtained
the control over the redemption rights of the units, these units were
reclassified as a component of permanent partners' capital. The fair value of
the reclassified units was measured by the closing price of the Corporation's
common stock on that date multiplied by the total number of units outstanding.
 
PREFERRED UNITS
 
    As described in Note 3, in connection with the funding of the Mack
Transaction, the Operating Partnership issued 15,237 Series A Preferred Units
and 215,325 Series B Preferred Units, with an aggregate value of $236,491. The
Preferred Units have a stated value of $1,000 per unit and are preferred as to
assets over any class of common units or other class of preferred units of the
Operating Partnership, based on circumstances per the applicable unit
certificates.
 
    The quarterly distribution on each Preferred Unit (representing 6.75 percent
of the Preferred Unit stated value of $1,000 on an annualized basis) is an
amount equal to the greater of (i) $16.875 or (ii) the quarterly distribution
attributable to a Preferred Unit determined as if such unit had been converted
into common units, subject to adjustment for customary anti-dilution rights.
Each of the Series A Preferred Units may be converted at any time into common
units at a conversion price of $34.65 per unit, and, after the one year
anniversary of the date of the Series A Preferred Units' initial issuance,
common units received pursuant to such conversion may be redeemed into common
stock. Each of the Series B Preferred Units may be converted at any time into
common units at a conversion price of $34.65 per unit, and, after the three year
anniversary of the date of the Series B Preferred Units' initial issuance,
common units received pursuant to such conversion may be redeemed into common
stock. Each of the common units are redeemable after one year for an equal
number of shares of common stock.
 
    The Preferred Units, issued in the Mack Transaction, are convertible into
common units at $34.65 per common unit, which is an amount less than the
$39.0625 closing stock price on the date of closing of the Mack Transaction.
Accordingly, the Operating Partnership recorded, on December 11, 1997, the
financial value ascribed to the beneficial conversion feature inherent in the
Preferred Units upon issuance, which totaled $29,361, and was recorded as
beneficial conversion feature in partners' capital. The beneficial conversion
feature was amortized in full as the Preferred Units were immediately
convertible upon issuance; such amortization was included in the Statement of
Operations for the year ended December 31, 1997.
 
    During 1998, the Operating Partnership issued 19,694 additional Preferred
Units (11,895 of Series A and 7,799 of Series B), convertible into 568,369
common units and valued at approximately $20,200, in connection with the
achievement of certain performance goals at the Mack Properties in redemption of
an equivalent number of contingent Preferred Units. Such Preferred Units carry
the identical terms as those issued in the Mack Transaction. As of December 31,
1998, there are no contingent Preferred Units outstanding, as all contingent
Preferred Units were redeemed for Preferred Units.
 
    In January 1999, 20,952 Series A Preferred Units were converted into 604,675
common units.
 
COMMON UNITS
 
    Certain individuals and entities own common units in the Operating
Partnership. A common unit and a share of common stock of the General Partner
have substantially the same economic characteristics in as much as they
effectively share equally in the net income or loss of the Operating
Partnership.
 
    Common units are redeemable by the common unitholders (other than the
General Partner) at their option, subject to certain restrictions, on the basis
of one common unit for either one share of common
 
                                       92
<PAGE>
11. REDEEMABLE PARTNERSHIP UNITS (CONTINUED)
stock or cash equal to the fair market value of a share at the time of the
redemption. The General Partner has the option to deliver shares of common stock
in exchange for all or any portion of the cash requested. When a unitholder
redeems a common unit for common stock of the Corporation, limited partner's
capital is reduced and the General Partner's capital is increased. Effective
August 21, 1998, the partnership agreement was amended to vest this right in the
Operating Partnership, rather than in the General Partnership (see Note 2).
Common units held by the General Partner are not redeemable.
 
    During 1998, the Operating Partnership redeemed a total of 82,880 common
units in exchange for an aggregate of $3,163 in cash. Additionally, the
Operating Partnership redeemed an aggregate of 29,300 common units for an
equivalent number of shares of common stock in the General Partner.
 
    As described in Note 3, the Operating Partnership issued an aggregate of
3,408,532 common units in 1997 in connection with the completion of the RM
Transaction, the Mack Transaction and a 1997 single-property acquisition.
 
    On March 26, 1998, in connection with the Pacifica portfolio-phase I
acquisition, the Operating Partnership issued 100,175 common units, valued at
approximately $3,779.
 
    On April 30, 1998, in connection with the acquisition of a 49.9 percent
interest in the G&G Martco joint venture (see Note 5), the Operating Partnership
issued 218,105 common units, valued at approximately $8,334.
 
    On June 8, 1998, in connection with the Pacifica portfolio-phase II
acquisition, the Operating Partnership issued 585,263 common units, valued at
approximately $20,753.
 
    On July 20, 1998, in connection with the expansion of one of the Mack
Properties, the Operating Partnership issued 52,245 common units, valued at
approximately $1,632.
 
    On September 10, 1998, in connection with the acquisition of 40 Richards
Avenue, the Operating Partnership issued 414,114 common units, valued at
approximately $12,615.
 
    During 1998, the Operating Partnership also issued 1,731,386 common units,
valued at approximately $58,936, in connection with the achievement of certain
performance goals at the Mack Properties in redemption of an equivalent number
of contingent common units. There were 275,046 contingent common units
outstanding as of December 31, 1998.
 
    In January 1999, the Operating Partnership redeemed an aggregate of
1,000,000 common units for an equivalent number of shares of common stock in the
Corporation.
 
CONTINGENT COMMON & PREFERRED UNITS
 
    In conjunction with the completion of the Mack Transaction (see Note 3),
2,006,432 contingent common units, 11,895 Series A contingent Preferred Units
and 7,799 Series B contingent Preferred Units were issued as contingent
non-participating units. Such Contingent Units have no voting, distribution or
other rights until such time as they are redeemed into common units, Series A
Preferred Units, and Series B Preferred Units, respectively. Redemption of such
Contingent Units shall occur upon the achievement of certain performance goals
relating to certain of the Mack Properties, specifically the achievement of
certain leasing activity. When Contingent Units are redeemed for common and
Preferred Units, an adjustment to the purchase price of certain of the Mack
Properties is recorded, based on the value of the units issued. On account of
certain of the performance goals having been achieved during 1998, the Operating
Partnership redeemed 1,731,386 contingent common units and 19,694 contingent
Preferred Units and issued an equivalent number of common and Preferred Units,
as indicated above.
 
                                       93
<PAGE>
11. REDEEMABLE PARTNERSHIP UNITS (CONTINUED)
There were no contingent Preferred Units outstanding and 275,046 contingent
common units outstanding as of December 31, 1998.
 
UNIT WARRANTS
 
    As described in Note 3, in connection with the funding of the Mack
Transaction, the Operating Partnership granted warrants to purchase 2,000,000
common units. The Unit Warrants are exercisable at any time after one year from
the date of their issuance and prior to the fifth anniversary date thereof at an
exercise price of $37.80 per common unit.
 
CHANGES IN REDEEMABLE PARTNERSHIP UNITS
 
    The following table sets forth the changes in redeemable partnership units
for the years presented:
 
<TABLE>
<CAPTION>
                                                                         LIMITED
                                                           PREFERRED     PARTNER     PREFERRED    LIMITED
                                                             UNITS        UNITS     UNITHOLDERS   PARTNERS     TOTAL
                                                          -----------  -----------  -----------  ----------  ----------
<S>                                                       <C>          <C>          <C>          <C>         <C>
Balance at January 1, 1996..............................          --        2,791    $      --   $   61,045  $   61,045
  Net income............................................          --           --           --        4,674       4,674
  Distributions.........................................          --           --           --       (4,720)     (4,720)
  Redemption of units for shares of common stock........          --         (101)          --       (1,073)     (1,073)
  Adjustment to reflect preferred unitholders' and
    limited partners' capital at redemption value.......          --           --           --       23,126      23,126
                                                          -----------  -----------  -----------  ----------  ----------
Balance at December 31, 1996............................          --        2,690           --       83,052      83,052
  Net income............................................          --           --       30,249          728      30,977
  Distributions.........................................          --           --         (888)      (7,790)     (8,678)
  Beneficial conversion feature.........................                               (29,361)       2,560     (26,801)
  Issuance of units in connection with acquisitions.....          --        3,408           --      111,785     111,785
  Redemption of units for shares of common stock........          --           (1)          --          (17)        (17)
  Issuance of Preferred Units...........................         231           --      236,491           --     236,491
  Adjustment to reflect preferred unitholders' and
    limited partners' capital at redemption value.......          --           --       36,324       59,679      96,003
                                                          -----------  -----------  -----------  ----------  ----------
Balance at December 31, 1997............................         231        6,097      272,815      249,997     522,812
  Net income............................................          --           --       10,267        9,260      19,527
  Distributions.........................................          --           --       (7,896)      (6,827)    (14,723)
  Issuance of units in connection with acquisitions.....          --        1,735           --       64,628      64,628
  Redemption of units for shares of common stock........          --          (22)          --         (848)       (848)
  Redemption of units...................................          --          (83)          --       (3,163)     (3,163)
  Issuance of Preferred Units...........................          17           --       17,943           --      17,943
  Adjustment to reflect preferred unitholders' and
    limited partners' capital at redemption value.......          --           --      (69,686)     (46,172)   (115,858)
                                                          -----------  -----------  -----------  ----------  ----------
  Reclassification of redeemable partnership units as
    permanent partners' capital.........................        (248)      (7,727)    (223,443)    (266,875)   (490,318)
                                                          -----------  -----------  -----------  ----------  ----------
Balance at December 31, 1998............................          --           --    $      --   $       --  $       --
                                                          -----------  -----------  -----------  ----------  ----------
                                                          -----------  -----------  -----------  ----------  ----------
</TABLE>
 
                                       94
<PAGE>
12. EMPLOYEE BENEFIT PLAN
 
    All employees of the Corporation who meet certain minimum age and period of
service requirements are eligible to participate in a 401(k) defined
contribution plan (the "Plan"). The Plan allows eligible employees to defer up
to 15 percent of their annual compensation. The amounts contributed by employees
are immediately vested and non-forfeitable. The Corporation, at management's
discretion, may match employee contributions, although no employer contributions
have been made to date.
 
13. DISCLOSURE OF FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    The following disclosure of estimated fair value was determined by
management using available market information and appropriate valuation
methodologies. However, considerable judgement is necessary to interpret market
data and develop estimated fair value. Accordingly, the estimates presented
herein are not necessarily indicative of the amounts the Operating Partnership
and the Property Partnerships could realize on disposition of the financial
instruments at December 31, 1998 and 1997. The use of different market
assumptions and/or estimation methodologies may have a material effect on the
estimated fair value amounts.
 
    Cash equivalents, receivables, accounts payable, and accrued expenses and
other liabilities are carried at amounts which reasonably approximate their fair
values.
 
    Mortgages and loans payable had an aggregate carrying value of $1,420,931
and $322,100 as of December 31, 1998 and 1997, respectively, which approximates
their estimated aggregate fair value (excluding prepayment penalties) based upon
then current interest rates for debt with similar terms and remaining
maturities.
 
    The estimated amount to be received/(paid) to settle the Operating
Partnership's interest rate contracts, at December 31, 1998 and 1997, based on
quoted market prices of comparable contracts, was $339 and ($1,404),
respectively.
 
    Disclosure about fair value of financial instruments is based on pertinent
information available to management as of December 31, 1998 and 1997. Although
management is not aware of any factors that would significantly affect the fair
value amounts, such amounts have not been comprehensively revalued for purposes
of these financial statements since December 31, 1998 and current estimates of
fair value may differ significantly from the amounts presented herein.
 
14. COMMITMENTS AND CONTINGENCIES
 
TAX ABATEMENT AGREEMENTS
 
    GROVE STREET PROPERTY
 
    Pursuant to an agreement with the City of Jersey City, New Jersey, as
amended, expiring in 2004, the Operating Partnership is required to make
payments in lieu of property taxes ("PILOT") on its property at 95 Christopher
Columbus Drive, Jersey City, Hudson County, New Jersey. Such PILOT, as defined,
is $1,267 per annum through May 31, 1999 and $1,584 per annum through May 31,
2004.
 
    HARBORSIDE FINANCIAL CENTER PROPERTY
 
    Pursuant to an agreement with the City of Jersey City, New Jersey obtained
by the former owner of the Harborside property in 1988 and assumed by the
Property Partnerships as part of the acquisition of the property in November
1996, the Property Partnerships are required to make PILOT payments on its
Harborside property. The agreement, which commenced in 1990, is for a term of 15
years. Such PILOT is equal to two percent of Total Project Costs, as defined, in
year one and increases by $75 per annum
 
                                       95
<PAGE>
14. COMMITMENTS AND CONTINGENCIES (CONTINUED)
through year fifteen. Total Project Costs, as defined, are $145,644. Such PILOT
totaled $2,570, $2,502 and $393 for the years ended December 31, 1998, 1997 and
1996, respectively
 
GROUND LEASE AGREEMENTS
 
    Future minimum rental payments under the terms of all non-cancelable ground
leases, under which the Operating Partnership or Property Partnerships are the
lessees, as of December 31, 1998, are as follows:
 
<TABLE>
<CAPTION>
YEAR                                                                                  AMOUNT
- -----------------------------------------------------------------------------------  ---------
<S>                                                                                  <C>
1999...............................................................................  $     422
2000...............................................................................        425
2001...............................................................................        427
2002...............................................................................        427
2003...............................................................................        427
Thereafter.........................................................................     21,934
                                                                                     ---------
Total..............................................................................  $  24,062
                                                                                     ---------
                                                                                     ---------
</TABLE>
 
OTHER CONTINGENCIES
 
    On December 10, 1997, a Shareholder's Derivative Action was filed in
Maryland Court on behalf of a shareholder. The complaint questioned certain
executive compensation decisions made by the Corporation's Board of Directors in
connection with the Mack Transaction. The Board's compensation decisions were
discussed in the proxy materials distributed in connection with the Mack
Transaction and were approved by in excess of 99 percent of the voting
shareholders. Although the Corporation believed that this lawsuit was factually
and legally baseless, the Corporation on May 4, 1998 agreed to a settlement
which included making certain changes to employment agreements of certain of its
executive officers. The Corporation incurred $750 in costs associated with this
action, which was provided for at December 31, 1997.
 
    The Operating Partnership is a defendant in other certain litigation arising
in the normal course of business activities. Management does not believe that
the resolution of these matters will have a materially adverse effect upon the
Operating Partnership and the Property Partnerships.
 
15. TENANT LEASES
 
    The Properties are leased to tenants under operating leases with various
expiration dates through 2016. Substantially all of the leases provide for
annual base rents plus recoveries and escalation charges based upon the tenant's
proportionate share of and/or increases in real estate taxes and certain
operating costs, as defined, and the pass through of charges for electrical
usage.
 
                                       96
<PAGE>
15. TENANT LEASES (CONTINUED)
    Future minimum rentals to be received under non-cancelable operating leases
at December 31, 1998 are as follows:
 
<TABLE>
<CAPTION>
YEAR                                                                                 AMOUNT
- --------------------------------------------------------------------------------  ------------
<S>                                                                               <C>
1999............................................................................  $    432,060
2000............................................................................       391,417
2001............................................................................       329,843
2002............................................................................       281,748
2003............................................................................       220,576
Thereafter......................................................................       825,762
                                                                                  ------------
Total...........................................................................  $  2,481,406
                                                                                  ------------
                                                                                  ------------
</TABLE>
 
16. SEGMENT REPORTING
 
    The Operating Partnership has adopted Statement of Financial Accounting
Standards No. 131, Disclosures about Segments of an Enterprise and Related
Information ("FASB No. 131"), which establishes standards for the way that
public business enterprises report information about operating segments in
annual financial statements and require that those enterprises report selected
information about operating segments in interim financial reports issued to
shareholders.
 
    The Operating Partnership operates in one business segment--real estate. The
Operating Partnership provides leasing, management, acquisition, development,
construction and tenant-related services for its portfolio. The Operating
Partnership does not have any foreign operations. The accounting policies of the
segment are the same as those described in Note 2, excluding straight-line rent
adjustments and depreciation and amortization.
 
                                       97
<PAGE>
16. SEGMENT REPORTING (CONTINUED)
    The Operating Partnership evaluates performance based upon net operating
income from the combined properties in the segment. Prior period segment
information conforms to current year presentation.
 
<TABLE>
<CAPTION>
                                                                                                    TOTAL
                                                                    TOTAL      CORPORATE &        OPERATING
                                                                   SEGMENT      OTHER (E)        PARTNERSHIP
                                                                 ------------  ------------  --------------------
<S>                                                              <C>           <C>           <C>
TOTAL CONTRACT REVENUES (A):
    1998.......................................................  $    475,096   $    4,919      $   480,015 (f)
    1997.......................................................       234,434        7,634          242,068 (g)
    1996.......................................................        92,548        1,946           94,494 (h)
TOTAL OPERATING AND INTEREST EXPENSES (B):
    1998.......................................................  $    162,612   $  100,707      $      263,319
    1997.......................................................        81,058       49,032             130,090
    1996.......................................................        32,664       16,556              49,220
NET OPERATING INCOME (C):
    1998.......................................................  $    312,484   $  (95,788)     $   216,696 (f)
    1997.......................................................       153,376      (41,398)         111,978 (g)
    1996.......................................................        59,884      (14,610)          45,274 (h)
TOTAL ASSETS:
    1998.......................................................  $  3,430,865   $   21,329      $    3,452,194
    1997.......................................................     2,583,738        9,706           2,593,444
    1996.......................................................       822,989      203,339           1,026,328
TOTAL LONG-LIVED ASSETS (D):
    1998.......................................................  $  3,393,313   $    4,098      $    3,397,411
    1997.......................................................     2,550,961        2,960           2,553,921
    1996.......................................................       804,139          308             804,447
</TABLE>
 
- ------------------------
 
    (a) Total contract revenues represents all revenues during the period
       (including the Operating Partnership's equity in earnings of
       unconsolidated joint ventures), excluding adjustments for straight-lining
       of rents and the Operating Partnership's share of straight-line rent
       adjustments from unconsolidated joint ventures. All interest income is
       excluded from the segment amounts and is classified in Corporate and
       Other for all periods.
 
    (b) Total operating and interest expenses represents the sum of real estate
       taxes, utilities, operating services, general and administrative and
       interest expense. All interest expense (including for property-level
       mortgages) is excluded from the segment amounts and is classified in
       Corporate and Other for all periods. Amounts presented exclude
       depreciation and amortization of $78,916, $36,825 and $14,731 for 1998,
       1997 and 1996, respectively, and non-recurring merger-related charges of
       $46,519 in 1997.
 
    (c) Net operating income represents total contract revenues [as defined in
       Note (a)] less total operating and interest expenses [as defined in Note
       (b)] for the period.
 
    (d) Long-lived assets is comprised of total rental property, unbilled rents
       receivable and investments in unconsolidated joint ventures.
 
    (e) Corporate & Other represents all corporate-level items (including
       interest income, interest expense and non-property general and
       administrative expense) as well as intercompany eliminations necessary to
       reconcile to consolidated Operating Partnership totals.
 
    (f) Excludes $13,575 of adjustments for straight-lining of rents and $109
       for the Operating Partnership's share of straight-line rent adjustments
       from unconsolidated joint ventures.
 
                                       98
<PAGE>
16. SEGMENT REPORTING (CONTINUED)
    (g) Excludes $7,733 of adjustments for straight-lining of rents.
 
    (h) Excludes $978 of adjustments for straight-lining of rents.
 
17. IMPACT OF RECENTLY-ISSUED ACCOUNTING STANDARDS
 
    In June 1998, the FASB issued Statement of Financial Accounting Standards
No. 133, Accounting for Derivative Instruments and Hedging Activities ("FASB No.
133"). FASB No. 133 is effective for all fiscal quarters of all fiscal years
beginning after June 15, 1999 (January 1, 2000 for the Operating Partnership).
FASB No. 133 requires that all derivative instruments be recorded on the balance
sheet at their fair value. Changes in the fair value of derivatives are recorded
each period in current earnings or other comprehensive income, depending on
whether a derivative is designated as part of a hedge transaction and, if it is,
the type of hedge transaction. Management of the Operating Partnership
anticipates that, due to its limited use of derivative instruments, the adoption
of FASB No. 133 will not have a significant effect on the Operating
Partnership's results of operations or its financial position.
 
18. PRO FORMA FINANCIAL INFORMATION (UNAUDITED)
 
    The following pro forma financial information for the years ended December
31, 1998 and 1997 are presented as if the RM Transaction, the Mack Transaction
and all other acquisitions and common stock offerings completed in 1998 and 1997
had all occurred on January 1, 1997. The pro forma financial information
excludes any deduction for the non-recurring merger-related charges and
beneficial conversion feature charge included in the Operating Partnership's
historical information for the year ended December 31, 1997. In management's
opinion, all adjustments necessary to reflect the effects of these transactions
have been made.
 
    This pro forma financial information is not necessarily indicative of what
the actual results of operations of the Operating Partnership would have been
assuming such transactions had been completed as of January 1, 1997, nor do they
represent the results of operations of future periods.
 
<TABLE>
<CAPTION>
                                                                                                  YEAR ENDED
                                                                                                 DECEMBER 31,
                                                                                            ----------------------
<S>                                                                                         <C>         <C>
                                                                                               1998        1997
                                                                                            ----------  ----------
Total revenues............................................................................  $  522,661  $   93,587
Operating and other expenses..............................................................     157,698      21,622
General and administrative................................................................      26,901      18,346
Depreciation and amortization.............................................................      83,410      12,000
Interest expense..........................................................................     102,828      55,938
                                                                                            ----------  ----------
Income (loss) before equity in net income of unconsolidated majority-owned Property
  Partnerships, extraordinary item and Preferred Unit distributions.......................     151,824     (14,319)
Equity in net income of unconsolidated majority-owned Property Partnerships...............          --     184,639
                                                                                            ----------  ----------
Income before extraordinary item and Preferred Unit distributions.........................     151,824     170,320
Preferred Units distributions.............................................................     (16,313)    (15,563)
                                                                                            ----------  ----------
Income before extraordinary item available to common unitholders..........................  $  135,511  $  154,757
                                                                                            ----------  ----------
                                                                                            ----------  ----------
Basic earnings per unit...................................................................  $     2.06  $     2.38
Diluted earnings per unit.................................................................  $     2.04  $     2.36
                                                                                            ----------  ----------
Basic weighted average units outstanding..................................................      65,884      64,926
Diluted weighted average units outstanding................................................      66,338      65,538
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
                                       99
<PAGE>
19. CONDENSED QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
 
    The following summarizes the condensed quarterly financial information for
the Operating Partnership:
 
<TABLE>
<CAPTION>
QUARTER ENDED 1998:                                            DECEMBER 31   SEPTEMBER 30   JUNE 30     MARCH 31
- -------------------------------------------------------------  ------------  ------------  ----------  ----------
<S>                                                            <C>           <C>           <C>         <C>
Total revenues...............................................   $  134,941    $  130,894   $  122,041  $  105,823
Equity in net income of unconsolidated majority-owned
  Property Partnerships......................................           --            --           --          --
Operating and other expenses.................................       41,444        40,595       36,598      31,067
General and administrative...................................        6,864         6,118        6,394       6,196
Depreciation and amortization................................       22,379        21,213       19,093      16,231
Interest expense.............................................       23,896        23,881       21,786      18,480
                                                               ------------  ------------  ----------  ----------
Income before extraordinary item.............................       40,358        39,087       38,170      33,849
Extraordinary item--loss on early retirement debt............           --            --       (2,670)         --
                                                               ------------  ------------  ----------  ----------
Net income...................................................   $   40,358    $   39,087   $   35,500  $   33,849
                                                               ------------  ------------  ----------  ----------
                                                               ------------  ------------  ----------  ----------
BASIC EARNINGS PER UNIT:
Income before extraordinary item.............................   $     0.55    $     0.53   $     0.53  $     0.52
Extraordinary item--loss on early retirement of debt.........           --            --        (0.04)         --
                                                               ------------  ------------  ----------  ----------
Net income...................................................   $     0.55    $     0.53   $     0.49  $     0.52
                                                               ------------  ------------  ----------  ----------
                                                               ------------  ------------  ----------  ----------
DILUTED EARNINGS PER UNIT:
Income before extraordinary item.............................   $     0.55    $     0.53   $     0.53  $     0.51
Extraordinary item--loss on early retirement of debt.........           --            --        (0.04)         --
                                                               ------------  ------------  ----------  ----------
Net income...................................................   $     0.55    $     0.53   $     0.49  $     0.51
                                                               ------------  ------------  ----------  ----------
                                                               ------------  ------------  ----------  ----------
Distributions declared per common unit.......................   $     0.55    $     0.55   $     0.50  $     0.50
                                                               ------------  ------------  ----------  ----------
</TABLE>
 
<TABLE>
<CAPTION>
QUARTER ENDED 1997                                             DECEMBER 31   SEPTEMBER 30   JUNE 30     MARCH 31
- -------------------------------------------------------------  ------------  ------------  ----------  ----------
<S>                                                            <C>           <C>           <C>         <C>
Total revenues...............................................   $    6,602    $    6,831   $    4,549  $    5,153
Equity in net income of unconsolidated majority-owned
Property Partnerships........................................       26,221        24,072       21,516      18,037
Operating and other expenses.................................          189           432          384         865
General and administrative...................................        4,720         3,593        3,609       3,139
Depreciation and amortization................................          240            13           13          13
Interest expense.............................................        2,893         3,677        2,022       1,078
Non-recurring merger-related charges.........................       46,519            --           --          --
                                                               ------------  ------------  ----------  ----------
(Loss) income before extraordinary item......................      (21,738)       23,188       20,037      18,095
Extraordinary item--loss on early retirement of debt.........           --        (7,200)          --          --
                                                               ------------  ------------  ----------  ----------
Net (loss) income............................................   $  (21,738)   $   15,988   $   20,037  $   18,095
                                                               ------------  ------------  ----------  ----------
                                                               ------------  ------------  ----------  ----------
BASIC EARNINGS PER UNIT:
(Loss) income before extraordinary item......................   $    (1.00)   $     0.57   $     0.49  $     0.45
Extraordinary item--loss on early retirement of debt.........           --         (0.18)          --          --
                                                               ------------  ------------  ----------  ----------
Net (loss) income............................................   $    (1.00)   $     0.39   $     0.49  $     0.45
                                                               ------------  ------------  ----------  ----------
                                                               ------------  ------------  ----------  ----------
DILUTED EARNINGS PER UNIT:
(Loss) income before extraordinary item......................   $    (1.00)   $     0.56   $     0.48  $     0.44
Extraordinary item--loss on early retirement of debt.........           --         (0.18)          --          --
                                                               ------------  ------------  ----------  ----------
Net (loss) income............................................   $    (1.00)   $     0.38   $     0.48  $     0.44
                                                               ------------  ------------  ----------  ----------
                                                               ------------  ------------  ----------  ----------
Distributions declared per common unit.......................   $     0.50    $     0.50   $     0.45  $     0.45
                                                               ------------  ------------  ----------  ----------
</TABLE>
 
                                      100
<PAGE>
EXHIBIT INDEX:
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER    EXHIBIT TITLE
- ---------  --------------------------------------------------------------------------------------------------------
<S>        <C>
10.1       Agreement of Limited Partnership HPMC Development Partners, L.P., dated as of April 23, 1998, by and
           among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali California Development Associates
           L.P.
 
10.2       Supplement to Agreement of Limited Partnership of HPMC Development Partners, L.P., dated as of April 23,
           1998, by and among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali California
           Development Associates L.P.
 
10.3       First Amendment to Agreement of Limited Partnership of HPMC Development Partners, L.P., dated as of
           October 8, 1998, by and among HCG Development, L.L.C., Summit Partners I, L.L.C. and Mack-Cali
           California Development Associates L.P.
 
10.4       Agreement of Limited Partnership of HPMC Lava Ridge Partners, L.P., dated as of July 21, 1998, by and
           among HCG Development L.L.C., Summit Partners I, L.L.C. and Mack-Cali California Development Associates
           L.P.
 
10.5       Amendment No. 1 to Revolving Credit Agreement dated July 20, 1998, by and among Mack-Cali Realty, L.P.
           and The Chase Manhattan Bank, Fleet National Bank and Other Lenders Which May Become Parties Thereto
 
10.6       Amendment No. 2 to Revolving Credit Agreement, dated as of December 30, 1998, among Mack-Cali Realty,
           L.P. and The Chase Manhattan Bank, Fleet National Bank and Other Lenders Which May Become Parties
           Thereto
 
23         Consent of PricewaterhouseCoopers LLP, independent accountants
 
27         Financial Data Schedule
</TABLE>
 
                                      101
<PAGE>
                             MACK-CALI REALTY, L.P.
 
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.
 
                                MACK-CALI REALTY, L.P.
                                ---------------------------
                                (REGISTRANT)
                                By: Mack-Cali Realty
                                Corporation, its
                                General Partner
 
     Date: March 2, 1999        /s/ BARRY LEFKOWITZ
                                ---------------------------
                                Barry Lefkowitz
                                EXECUTIVE VICE PRESIDENT
                                AND CHIEF FINANCIAL OFFICER
 
    Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated:
 
<TABLE>
<CAPTION>
             NAME                         TITLE                    DATE
- ------------------------------  --------------------------  -------------------
 
<C>                             <S>                         <C>
       /s/ JOHN J. CALI
- ------------------------------  CHAIRMAN OF THE BOARD          March 2, 1999
         John J. Cali
 
      /s/ THOMAS A. RIZK
- ------------------------------  CHIEF EXECUTIVE OFFICER        March 2, 1999
        Thomas A. Rizk              AND DIRECTOR
 
    /s/ MITCHELL E. HERSH       PRESIDENT, CHIEF OPERATING
- ------------------------------    OFFICER                      March 2, 1999
      Mitchell E. Hersh             AND DIRECTOR
 
     /s/ BARRY LEFKOWITZ        EXECUTIVE VICE PRESIDENT
- ------------------------------      AND CHIEF FINANCIAL        March 2, 1999
       Barry Lefkowitz            OFFICER
 
  /s/ BRENDAN T. BYRNE, ESQ.
- ------------------------------  DIRECTOR                       March 2, 1999
    Brendan T. Byrne, Esq.
 
     /s/ MARTIN D. GRUSS
- ------------------------------  DIRECTOR                       March 2, 1999
       Martin D. Gruss
</TABLE>
 
                                      102
<PAGE>
<TABLE>
<CAPTION>
             NAME                         TITLE                    DATE
- ------------------------------  --------------------------  -------------------
 
<C>                             <S>                         <C>
     /s/ JEFFREY B. LANE
- ------------------------------  DIRECTOR                       March 2, 1999
       Jeffrey B. Lane
 
      /s/ EARLE I. MACK
- ------------------------------  DIRECTOR                       March 2, 1999
        Earle I. Mack
 
     /s/ WILLIAM L. MACK
- ------------------------------  DIRECTOR                       March 2, 1999
       William L. Mack
 
     /s/ PAUL A. NUSSBAUM
- ------------------------------  DIRECTOR                       March 2, 1999
       Paul A. Nussbaum
 
   /s/ ALAN G. PHILIBOSIAN
- ------------------------------  DIRECTOR                       March 2, 1999
     Alan G. Philibosian
 
    /s/ DR. IRVIN D. REID
- ------------------------------  DIRECTOR                       March 2, 1999
      Dr. Irvin D. Reid
 
       /s/ VINCENT TESE
- ------------------------------  DIRECTOR                       March 2, 1999
         Vincent Tese
 
     /s/ MARTIN S. BERGER
- ------------------------------  DIRECTOR                       March 2, 1999
       Martin S. Berger
</TABLE>
 
                                      103
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
ATLANTIC COUNTY, NEW JERSEY
EGG HARBOR
- -----------------------------------------------------
100 Decadon Drive (O)................................  1987      1995            --      $   300    $ 3,282         $   130
200 Decadon Drive (O)................................  1991      1995            --          369      3,241             162
 
BERGEN COUNTY, NEW JERSEY
FAIR LAWN
- -----------------------------------------------------
17-17 Rte 208 North (O)..............................  1987      1995       $17,586        3,067     19,415             394
FORT LEE
- -----------------------------------------------------
2115 Linwood Avenue (O)..............................  1981      1998            --          474      4,419           2,543
One Bridge Plaza (O).................................  1981      1996            --        2,439     24,462           1,376
LITTLE FERRY
- -----------------------------------------------------
200 Riser Road (O)...................................  1974      1997         6,849        3,888     15,551             231
MONTVALE
- -----------------------------------------------------
135 Chestnut Ridge Road (O)..........................  1981      1997            --        2,587     10,350              27
95 Chestnut Ridge Road (O)...........................  1975      1997         2,135        1,227      4,907              44
PARAMUS
- -----------------------------------------------------
140 Ridgewood Avenue (O).............................  1981      1997        15,392        7,932     31,463             150
15 East Midland Avenue (O)...........................  1988      1997        24,790       10,374     41,497              25
461 From Road (O)....................................  1988      1997        29,223       13,194     52,778              54
61 South Paramus Avenue (O)..........................  1985      1997        15,776        9,005     36,018           2,639
650 From Road (O)....................................  1978      1997        23,316       10,487     41,949             194
ROCHELLE PARK
- -----------------------------------------------------
120 Passaic Street (O)...............................  1972      1997            --        1,354      5,415               6
365 West Passaic Street (O)..........................  1976      1997         7,468        4,148     16,592             661
SADDLE RIVER
- -----------------------------------------------------
1 Lake Street (O)....................................  1994      1997        35,789       13,952     55,812               7
UPPER SADDLE RIVER
- -
10 Mountainview Road (O).............................  1986      1998            --        3,683        835          20,991
WOODCLIFF LAKE
- -----------------------------------------------------
300 Tice Boulevard (O)...............................  1991      1996            --        5,424     29,688             388
400 Chestnut Ridge Road (O)..........................  1982      1997        14,983        4,201     16,802               1
470 Chestnut Ridge Road (O)..........................  1987      1997         4,087        2,346      9,385               2
50 Tice Boulevard (O)................................  1984      1994            --        4,500         --          25,703
530 Chestnut Ridge Road (O)..........................  1986      1997         4,032        1,860      7,441               3
 
BURLINGTON COUNTY, NEW JERSEY
BURLINGTON
- -----------------------------------------------------
3 Terri Lane (F).....................................  1991      1998         2,104          652      3,433             840
5 Terri Lane (F).....................................  1992      1998         2,372          564      3,792           1,265
DELRAN
- -----------------------------------------------------
Tenby Chase Apartments (M)...........................  1970      1994            --          396         --           5,208
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
ATLANTIC COUNTY, NEW JERSEY
EGG HARBOR
- -----------------------------------------------------
100 Decadon Drive (O)................................  $   300    $ 3,412      $ 3,712   $    273
200 Decadon Drive (O)................................      369      3,403        3,772        300
BERGEN COUNTY, NEW JERSEY
FAIR LAWN
- -----------------------------------------------------
17-17 Rte 208 North (O)..............................    3,067     19,809       22,876      1,949
FORT LEE
- -----------------------------------------------------
2115 Linwood Avenue (O)..............................      474      6,962        7,436         --
One Bridge Plaza (O).................................    2,439     25,838       28,277      1,434
LITTLE FERRY
- -----------------------------------------------------
200 Riser Road (O)...................................    3,888     15,782       19,670        408
MONTVALE
- -----------------------------------------------------
135 Chestnut Ridge Road (O)..........................    2,588     10,376       12,964        270
95 Chestnut Ridge Road (O)...........................    1,227      4,951        6,178        128
PARAMUS
- -----------------------------------------------------
140 Ridgewood Avenue (O).............................    7,932     31,613       39,545        526
15 East Midland Avenue (O)...........................   10,374     41,522       51,896      1,083
461 From Road (O)....................................   13,194     52,832       66,026      1,378
61 South Paramus Avenue (O)..........................    9,005     38,657       47,662        946
650 From Road (O)....................................   10,487     42,143       52,630      1,096
ROCHELLE PARK
- -----------------------------------------------------
120 Passaic Street (O)...............................    1,354      5,421        6,775        141
365 West Passaic Street (O)..........................    4,148     17,253       21,401        435
SADDLE RIVER
- -----------------------------------------------------
1 Lake Street (O)....................................   13,953     55,818       69,771      1,457
UPPER SADDLE RIVER
- -
10 Mountainview Road (O).............................    4,240     21,269       25,509        651
WOODCLIFF LAKE
- -----------------------------------------------------
300 Tice Boulevard (O)...............................    5,424     30,076       35,500      1,572
400 Chestnut Ridge Road (O)..........................    4,201     16,803       21,004        436
470 Chestnut Ridge Road (O)..........................    2,346      9,387       11,733        245
50 Tice Boulevard (O)................................    4,500     25,703       30,203     10,401
530 Chestnut Ridge Road (O)..........................    1,860      7,444        9,304        194
BURLINGTON COUNTY, NEW JERSEY
BURLINGTON
- -----------------------------------------------------
3 Terri Lane (F).....................................      658      4,267        4,925        151
5 Terri Lane (F).....................................      569      5,052        5,621        198
DELRAN
- -----------------------------------------------------
Tenby Chase Apartments (M)...........................      396      5,208        5,604      3,283
</TABLE>
 
                                      104
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
MOORESTOWN
- -----------------------------------------------------
1 Executive Drive (F)................................  1989      1998            --          226      1,453              95
101 Commerce Drive (F)...............................  1988      1998            --          422      3,528             237
101 Executive Drive (F)..............................  1990      1998         1,200          241      2,262              46
102 Executive Drive (F)..............................  1990      1998            --          353      3,607             117
1256 North Church (F)................................  1984      1998            --          354      3,098             227
1507 Lancer Drive (F)................................  1995      1998            --          119      1,106              37
1510 Lancer Drive (F)................................  1998      1998            --          732      2,928              15
201 Commerce Drive (F)...............................  1986      1998         1,121          254      1,694              74
224 Strawbridge Drive (O)............................  1984      1997            --          766      4,334           2,698
225 Executive Drive (F)..............................  1990      1998         1,353          323      2,477              91
228 Strawbridge Drive (O)............................  1984      1997            --          767      4,333           2,885
130 Twosome Drive (F)................................  1997      1998            --          234      1,954              38
40 Twosome Drive (F).................................  1996      1998            --          297      2,393              51
50 Twosome Drive (F).................................  1997      1998            --          301      2,330              35
MOORESTOWN
- -----------------------------------------------------
840 North Lenola Road (F)............................  1995      1998            --          329      2,366              39
844 North Lenola Road (F)............................  1995      1998            --          239      1,714              29
97 Foster Road (F)...................................  1982      1998            --          208      1,382              44
WEST DEPTFORD
- -----------------------------------------------------
1451 Metropolitan Drive (F)..........................  1996      1998            --          203      1,189              23
 
ESSEX COUNTY, NEW JERSEY
MILLBURN
- -----------------------------------------------------
150 J.F.K. Parkway (O)...............................  1980      1997        27,696       12,606     50,425              55
ROSELAND
- -----------------------------------------------------
101 Eisenhower Parkway (O)...........................  1980      1994            --          228         --          14,149
103 Eisenhower Parkway (O)...........................  1985      1994            --           --         --          14,113
 
HUDSON COUNTY, NEW JERSEY
JERSEY CITY
- -----------------------------------------------------
95 Christopher Columbus Drive (O)....................  1989      1994            --        6,205         --          80,392
Harborside Financial Center Plaza I (O)..............  1983      1996        48,148        3,923     51,013              --
Harborside Financial Center Plaza II (O).............  1990      1996        54,001       17,655    101,546             987
Harborside Financial Center Plaza III (O)............  1990      1996        54,001       17,655    101,878             993
 
MERCER COUNTY, NEW JERSEY
HAMILTON TOWNSHIP
- -----------------------------------------------------
100 Horizon Drive (F)................................  1989      1995            --          205      1,676              --
200 Horizon Drive (F)................................  1991      1995            --          205      3,027              --
300 Horizon Drive (F)................................  1989      1995            --          379      4,355               8
500 Horizon Drive (F)................................  1990      1995            --          379      3,395             100
PRINCETON
- -----------------------------------------------------
5 Vaughn Drive (O)...................................  1987      1995            --          657      9,800             371
400 Alexander Road (O)...............................  1987      1995            --          344      3,917           2,413
103 Carnegie Center (O)..............................  1984      1996            --        2,566      7,868             498
100 Overlook Center (O)..............................  1988      1997            --        2,378     21,754              52
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
MOORESTOWN
- -----------------------------------------------------
1 Executive Drive (F)................................      228      1,546        1,774         60
101 Commerce Drive (F)...............................      425      3,762        4,187        139
101 Executive Drive (F)..............................      243      2,306        2,549         82
102 Executive Drive (F)..............................      356      3,721        4,077        122
1256 North Church (F)................................      356      3,323        3,679        123
1507 Lancer Drive (F)................................      120      1,142        1,262         37
1510 Lancer Drive (F)................................      734      2,941        3,675         37
201 Commerce Drive (F)...............................      258      1,764        2,022         70
224 Strawbridge Drive (O)............................      767      7,031        7,798        126
225 Executive Drive (F)..............................      326      2,565        2,891         97
228 Strawbridge Drive (O)............................      767      7,218        7,985        170
130 Twosome Drive (F)................................      235      1,991        2,226         89
40 Twosome Drive (F).................................      300      2,441        2,741         89
50 Twosome Drive (F).................................      304      2,362        2,666         99
MOORESTOWN
- -----------------------------------------------------
840 North Lenola Road (F)............................      333      2,401        2,734         94
844 North Lenola Road (F)............................      241      1,741        1,982         68
97 Foster Road (F)...................................      211      1,423        1,634         47
WEST DEPTFORD
- -----------------------------------------------------
1451 Metropolitan Drive (F)..........................      206      1,209        1,415         51
ESSEX COUNTY, NEW JERSEY
MILLBURN
- -----------------------------------------------------
150 J.F.K. Parkway (O)...............................   12,606     50,480       63,086      1,317
ROSELAND
- -----------------------------------------------------
101 Eisenhower Parkway (O)...........................      228     14,149       14,377      7,363
103 Eisenhower Parkway (O)...........................    2,300     11,813       14,113      5,033
HUDSON COUNTY, NEW JERSEY
JERSEY CITY
- -----------------------------------------------------
95 Christopher Columbus Drive (O)....................    6,205     80,392       86,597     21,666
Harborside Financial Center Plaza I (O)..............    3,923     51,013       54,936      2,763
Harborside Financial Center Plaza II (O).............   17,841    102,347      120,188      5,570
Harborside Financial Center Plaza III (O)............   17,821    102,705      120,526      5,569
MERCER COUNTY, NEW JERSEY
HAMILTON TOWNSHIP
- -----------------------------------------------------
100 Horizon Drive (F)................................      205      1,676        1,881        133
200 Horizon Drive (F)................................      205      3,027        3,232        240
300 Horizon Drive (F)................................      379      4,363        4,742        348
500 Horizon Drive (F)................................      379      3,495        3,874        306
PRINCETON
- -----------------------------------------------------
5 Vaughn Drive (O)...................................      657     10,171       10,828        886
400 Alexander Road (O)...............................      344      6,330        6,674        665
103 Carnegie Center (O)..............................    2,566      8,366       10,932        656
100 Overlook Center (O)..............................    2,378     21,806       24,184        635
</TABLE>
 
                                      105
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
MIDDLESEX COUNTY, NEW JERSEY
EAST BRUNSWICK
- -----------------------------------------------------
377 Summerhill Road (O)..............................  1977      1997            --          649      2,594             143
PLAINSBORO
- -----------------------------------------------------
500 College Road East (O)............................  1984      1998            --          614     20,626             148
SOUTH BRUNSWICK
- -----------------------------------------------------
3 Independence Way (O)...............................  1983      1997            --        1,997     11,391              79
WOODBRIDGE
- -----------------------------------------------------
581 Main Street (O)..................................  1991      1997        17,500        3,237     12,949          12,406
 
MONMOUTH COUNTY, NEW JERSEY
NEPTUNE
- -----------------------------------------------------
3600 Route 66 (O)....................................  1989      1995            --        1,098     18,146              40
WALL TOWNSHIP
- -----------------------------------------------------
1305 Campus Parkway (O)..............................  1988      1995            --          335      2,560              79
1320 Wykoff Avenue (F)...............................  1986      1995            --          255      1,285              19
1324 Wykoff Avenue (F)...............................  1987      1995            --          230      1,439             109
1325 Campus Parkway (F)..............................  1988      1995            --          270      2,928              61
1340 Campus Parkway (F)..............................  1992      1995            --          489      4,621             279
1350 Campus Parkway (O)..............................  1990      1995            --          454      7,134             407
1433 Highway 34 (F)..................................  1985      1995            --          889      4,321             303
1345 Campus Parkway (F)..............................  1995      1997            --        1,023      5,703              21
 
MORRIS COUNTY, NEW JERSEY
FLORHAM PARK
- -----------------------------------------------------
325 Columbia Parkway (O).............................  1987      1994            --        1,564         --          15,596
MORRIS PLAINS
- -----------------------------------------------------
201 Littleton Road (O)...............................  1979      1997            --        2,407      9,627              94
250 Johnson Road (O).................................  1977      1997         2,292        2,004      8,016             155
MORRIS TOWNSHIP
- -----------------------------------------------------
340 Mt. Kemble Avenue (O)............................  1985      1997        32,178       13,624     54,496              39
412 Mt. Kemble Avenue (O)............................  1986      1997        40,025       15,737     62,954              30
PARSIPPANY
- -----------------------------------------------------
2 Dryden Way (O).....................................  1990      1998            --          778        420              13
2 Hilton Court (O)...................................  1991      1998            --        1,971     32,007              83
600 Parsippany Road (O)..............................  1978      1994            --        1,257      5,594             569
7 Campus Drive (O)...................................  1982      1998            --        1,932     27,788             106
7 Sylvan Way (O).....................................  1987      1998            --        2,084     26,083              35
8 Campus Drive (O)...................................  1987      1998            --        1,865     35,456             142
5 Sylvan Way (O).....................................  1989      1998            --        1,160     25,214             169
1 Sylvan Way (O).....................................  1989      1998            --        1,689     24,699             681
 
PASSAIC COUNTY, NEW JERSEY
CLIFTON
- -----------------------------------------------------
777 Passaic Avenue (O)...............................  1983      1994            --           --         --           7,135
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
MIDDLESEX COUNTY, NEW JERSEY
EAST BRUNSWICK
- -----------------------------------------------------
377 Summerhill Road (O)..............................      649      2,737        3,386         69
PLAINSBORO
- -----------------------------------------------------
500 College Road East (O)............................      614     20,774       21,388        376
SOUTH BRUNSWICK
- -----------------------------------------------------
3 Independence Way (O)...............................    1,997     11,470       13,467        381
WOODBRIDGE
- -----------------------------------------------------
581 Main Street (O)..................................    8,115     20,477       28,592        381
MONMOUTH COUNTY, NEW JERSEY
NEPTUNE
- -----------------------------------------------------
3600 Route 66 (O)....................................    1,098     18,186       19,284      1,443
WALL TOWNSHIP
- -----------------------------------------------------
1305 Campus Parkway (O)..............................      335      2,639        2,974        242
1320 Wykoff Avenue (F)...............................      255      1,304        1,559        103
1324 Wykoff Avenue (F)...............................      230      1,548        1,778        141
1325 Campus Parkway (F)..............................      270      2,989        3,259        248
1340 Campus Parkway (F)..............................      489      4,900        5,389        411
1350 Campus Parkway (O)..............................      454      7,541        7,995        677
1433 Highway 34 (F)..................................      889      4,624        5,513        458
1345 Campus Parkway (F)..............................    1,024      5,723        6,747        274
MORRIS COUNTY, NEW JERSEY
FLORHAM PARK
- -----------------------------------------------------
325 Columbia Parkway (O).............................    1,564     15,596       17,160      5,558
MORRIS PLAINS
- -----------------------------------------------------
201 Littleton Road (O)...............................    2,407      9,721       12,128        252
250 Johnson Road (O).................................    2,004      8,171       10,175        210
MORRIS TOWNSHIP
- -----------------------------------------------------
340 Mt. Kemble Avenue (O)............................   13,624     54,535       68,159      1,423
412 Mt. Kemble Avenue (O)............................   15,738     62,983       78,721      1,644
PARSIPPANY
- -----------------------------------------------------
2 Dryden Way (O).....................................      778        433        1,211         18
2 Hilton Court (O)...................................    1,971     32,090       34.061        741
600 Parsippany Road (O)..............................    1,257      6,163        7,420        685
7 Campus Drive (O)...................................    1,932     27,894       29,826        617
7 Sylvan Way (O).....................................    2,084     26,118       28,202        616
8 Campus Drive (O)...................................    1,865     35,598       37,463        784
5 Sylvan Way (O).....................................    1,160     25,383       26,543        541
1 Sylvan Way (O).....................................    1,689     25,380       27,069        554
PASSAIC COUNTY, NEW JERSEY
CLIFTON
- -----------------------------------------------------
777 Passaic Avenue (O)...............................    1,100      6,035        7,135      2,449
</TABLE>
 
                                      106
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
TOTOWA
- -----------------------------------------------------
11 Commerce Way (F)..................................  1989      1995            --          586      2,986              67
120 Commerce Way (F).................................  1994      1995            --          228         --           1,197
140 Commerce Way (F).................................  1994      1995            --          229         --           1,197
2 Center Court (F)...................................  1998      1998            --          191         --           2,537
20 Commerce Way (F)..................................  1992      1995            --          516      3,108              28
29 Commerce Way (F)..................................  1990      1995            --          586      3,092             227
40 Commerce Way (F)..................................  1987      1995            --          516      3,260             379
45 Commerce Way (F)..................................  1992      1995            --          536      3,379             138
60 Commerce Way (F)..................................  1988      1995            --          526      3,257             232
80 Commerce Way (F)..................................  1996      1996            --          227         --           1,648
100 Commerce Way (F).................................  1996      1996            --          226         --           1,647
999 Riverview Drive (O)..............................  1988      1995            --          476      6,024             132
WAYNE
- -----------------------------------------------------
201 Willowbrook Boulevard (O)........................  1970      1997        10,918        3,103     12,410             418
 
SOMERSET COUNTY, NEW JERSEY
BASKING RIDGE
- -----------------------------------------------------
222 Mt. Airy Road (O)................................  1986      1996            --          775      3,636              17
233 Mt. Airy Road (O)................................  1987      1996            --        1,034      5,033              16
BRIDGEWATER
- -----------------------------------------------------
721 Route 202/206 (O)................................  1989      1997        23,000        6,730     26,919             101
 
UNION COUNTY, NEW JERSEY
CLARK
- -----------------------------------------------------
100 Walnut Avenue (O)................................  1985      1994            --           --         --          17,608
CRANFORD
- -----------------------------------------------------
11 Commerce Drive (O)................................  1981      1994            --          470         --           6,088
12 Commerce Drive (O)................................  1967      1997            --          887      3,549              26
20 Commerce Drive (O)................................  1990      1994            --        2,346         --          21,991
6 Commerce Drive (O).................................  1973      1994            --          250         --           2,704
65 Jackson Drive (O).................................  1984      1994            --          541         --           7,006
NEW PROVIDENCE
- -----------------------------------------------------
890 Mountain Road (O)................................  1977      1997         8,027        2,796     11,185           4,037
 
DUTCHESS COUNTY, NEW YORK
FISHKILL
- -----------------------------------------------------
300 South Lake Drive (O).............................  1987      1997            --        2,258      9,031              86
 
NASSAU COUNTY, NEW YORK
NORTH HEMPSTEAD
- -----------------------------------------------------
111 East Shore Road (O)..............................  1980      1997         8,000        2,093      8,370              94
600 Community Drive (O)..............................  1983      1997            --       11,018     44,070              12
 
ROCKLAND COUNTY, NEW YORK
SUFFERN
- -----------------------------------------------------
400 Rella Boulevard (O)..............................  1988      1995            --        1,090     13,412             975
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
TOTOWA
- -----------------------------------------------------
11 Commerce Way (F)..................................      586      3,053        3,639        248
120 Commerce Way (F).................................      228      1,197        1,425         95
140 Commerce Way (F).................................      229      1,197        1,426         96
2 Center Court (F)...................................      191      2,537        2,728         56
20 Commerce Way (F)..................................      516      3,136        3,652        248
29 Commerce Way (F)..................................      586      3,319        3,905        324
40 Commerce Way (F)..................................      516      3,639        4,155        362
45 Commerce Way (F)..................................      536      3,517        4,053        327
60 Commerce Way (F)..................................      526      3,489        4,015        346
80 Commerce Way (F)..................................      227      1,648        1,875        203
100 Commerce Way (F).................................      226      1,647        1,873        202
999 Riverview Drive (O)..............................      476      6,156        6,632        515
WAYNE
- -----------------------------------------------------
201 Willowbrook Boulevard (O)........................    3,103     12,828       15,931        325
SOMERSET COUNTY, NEW JERSEY
BASKING RIDGE
- -----------------------------------------------------
222 Mt. Airy Road (O)................................      775      3,653        4,428        228
233 Mt. Airy Road (O)................................    1,034      5,049        6,083        305
BRIDGEWATER
- -----------------------------------------------------
721 Route 202/206 (O)................................    6,730     27,020       33,750        703
UNION COUNTY, NEW JERSEY
CLARK
- -----------------------------------------------------
100 Walnut Avenue (O)................................    1,822     15,786       17,608      6,395
CRANFORD
- -----------------------------------------------------
11 Commerce Drive (O)................................      470      6,088        6,558      3,021
12 Commerce Drive (O)................................      887      3,575        4,462         93
20 Commerce Drive (O)................................    2,346     21,991       24,337      5,727
6 Commerce Drive (O).................................      250      2,704        2,954      1,545
65 Jackson Drive (O).................................      542      7,005        7,547      2,919
NEW PROVIDENCE
- -----------------------------------------------------
890 Mountain Road (O)................................    3,600     14,418       18,018        361
DUTCHESS COUNTY, NEW YORK
FISHKILL
- -----------------------------------------------------
300 South Lake Drive (O).............................    2,258      9,117       11,375        245
NASSAU COUNTY, NEW YORK
NORTH HEMPSTEAD
- -----------------------------------------------------
111 East Shore Road (O)..............................    2,093      8,464       10,557        228
600 Community Drive (O)..............................   11,018     44,082       55,100      1,194
ROCKLAND COUNTY, NEW YORK
SUFFERN
- -----------------------------------------------------
400 Rella Boulevard (O)..............................    1,090     14,387       15,477      1,397
</TABLE>
 
                                      107
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
WESTCHESTER COUNTY, NEW YORK
ELMSFORD
- -----------------------------------------------------
1 Warehouse Lane (I).................................  1957      1997           161            3        268             100
1 Westchester Plaza (F)..............................  1967      1997         1,320          199      2,023              29
100 Clearbrook Road (O)..............................  1975      1997         1,281          220      5,366             463
101 Executive Boulevard (O)..........................  1971      1997         3,600          267      5,838              73
11 Clearbrook Road (F)...............................  1974      1997         1,367          149      2,159               5
150 Clearbrook Road (F)..............................  1975      1997         4,464          497      7,030              51
175 Clearbrook Road (F)..............................  1973      1997         4,826          655      7,473             210
2 Warehouse Lane (I).................................  1957      1997           402            4        672               5
2 Westchester Plaza (F)..............................  1968      1997         1,760          234      2,726               1
200 Clearbrook Road (F)..............................  1974      1997         4,263          579      6,620              85
250 Clearbrook Road (F)..............................  1973      1997         5,630          867      8,647             229
3 Warehouse Lane (I).................................  1957      1997         1,166           21      1,948               1
3 Westchester Plaza (F)..............................  1969      1997         5,080          655      7,936              --
300 Executive Boulevard (F)..........................  1970      1997         2,403          460      3,609              --
350 Executive Boulevard (F)..........................  1970      1997            --          100      1,793              --
399 Executive Boulevard (F)..........................  1962      1997         4,560          531      7,191              12
4 Warehouse Lane (I).................................  1957      1997         8,044           84     13,393              63
4 Westchester Plaza (F)..............................  1969      1997         2,400          320      3,729              59
400 Executive Boulevard (F)..........................  1970      1997         2,403        2,202      1,846             118
5 Warehouse Lane (I).................................  1957      1997         2,855           19      4,804               4
5 Westchester Plaza (F)..............................  1969      1997         1,200          118      1,949              --
50 Executive Boulevard (F)...........................  1969      1997         1,680          237      2,617              --
500 Executive Boulevard (F)..........................  1970      1997         2,643          258      4,183               1
525 Executive Boulevard (F)..........................  1972      1997            --          345      5,499               8
570 Taxter Road (O)..................................  1972      1997         3,847          438      6,078              40
6 Warehouse Lane (I).................................  1982      1997         2,654           10      4,419               6
6 Westchester Plaza (F)..............................  1968      1997         1,280          164      1,998              21
7 Westchester Plaza (F)..............................  1972      1997         2,720          286      4,321               9
700 Executive Boulevard (L)..........................   N/A      1997            --          970         --              --
75 Clearbrook Road (F)...............................  1990      1997            --        2,314      4,716              --
77 Executive Boulevard (F)...........................  1977      1997         3,982           34      1,104               6
8 Westchester Plaza (F)..............................  1971      1997         3,378          447      5,262             634
85 Executive Boulevard (F)...........................  1968      1997         1,562          155      2,507              12
HAWTHORNE
- -----------------------------------------------------
1 Skyline Drive (O)..................................  1980      1997            --           66      1,711              11
10 Skyline Drive (F).................................  1985      1997         1,729          134      2,799              78
11 Skyline Drive (F).................................  1989      1997            --           --      4,788              66
15 Skyline Drive (F).................................  1989      1997            --           --      7,449             305
17 Skyline Drive (O).................................  1989      1997            --           --      7,269              65
2 Skyline Drive (O)..................................  1987      1997            --          109      3,128              10
200 Saw Mill River Road (F)..........................  1965      1997         2,172          353      3,353              68
30 Saw Mill River Road (O)...........................  1982      1997        21,553        2,355     34,254           2,802
4 Skyline Drive (F)..................................  1987      1997            --          363      7,513             371
7 Skyline Drive (O)..................................  1987      1998            --          330     13,013              36
8 Skyline Drive (F)..................................  1985      1997         2,734          212      4,410              85
TARRYTOWN
- -----------------------------------------------------
200 White Plains Road (O)............................  1982      1997         5,150          378      8,367             557
220 White Plains Road (O)............................  1984      1997         5,030          367      8,112             156
230 White Plains Road (R)............................  1984      1997         1,158          124      1,845              --
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
WESTCHESTER COUNTY, NEW YORK
ELMSFORD
- -----------------------------------------------------
1 Warehouse Lane (I).................................        3        368          371         13
1 Westchester Plaza (F)..............................      199      2,052        2,251        101
100 Clearbrook Road (O)..............................      220      5,829        6,049        273
101 Executive Boulevard (O)..........................      267      5,911        6,178        290
11 Clearbrook Road (F)...............................      149      2,164        2,313        104
150 Clearbrook Road (F)..............................      497      7,081        7,578        338
175 Clearbrook Road (F)..............................      655      7,683        8,338        396
2 Warehouse Lane (I).................................        4        677          681         32
2 Westchester Plaza (F)..............................      234      2,727        2,961        131
200 Clearbrook Road (F)..............................      579      6,705        7,284        324
250 Clearbrook Road (F)..............................      867      8,876        9,743        424
3 Warehouse Lane (I).................................       21      1,949        1,970         93
3 Westchester Plaza (F)..............................      655      7,936        8,591        380
300 Executive Boulevard (F)..........................      460      3,609        4,069        173
350 Executive Boulevard (F)..........................      100      1,793        1,893         86
399 Executive Boulevard (F)..........................      531      7,203        7,734        345
4 Warehouse Lane (I).................................       85     13,455       13,540        651
4 Westchester Plaza (F)..............................      320      3,788        4,108        188
400 Executive Boulevard (F)..........................    2,202      1,964        4,166         88
5 Warehouse Lane (I).................................       19      4,808        4,827        232
5 Westchester Plaza (F)..............................      118      1,949        2,067         93
50 Executive Boulevard (F)...........................      237      2,617        2,854        125
500 Executive Boulevard (F)..........................      258      4,184        4,442        200
525 Executive Boulevard (F)..........................      345      5,507        5,852        265
570 Taxter Road (O)..................................      438      6,118        6,556        301
6 Warehouse Lane (I).................................       10      4,425        4,435        212
6 Westchester Plaza (F)..............................      164      2,019        2,183         99
7 Westchester Plaza (F)..............................      286      4,330        4,616        211
700 Executive Boulevard (L)..........................      970         --          970         --
75 Clearbrook Road (F)...............................    2,314      4,716        7,030        226
77 Executive Boulevard (F)...........................       34      1,110        1,144         53
8 Westchester Plaza (F)..............................      447      5,896        6,343        321
85 Executive Boulevard (F)...........................      155      2,519        2,674        120
HAWTHORNE
- -----------------------------------------------------
1 Skyline Drive (O)..................................       66      1,722        1,788         82
10 Skyline Drive (F).................................      134      2,877        3,011        148
11 Skyline Drive (F).................................       --      4,854        4,854        239
15 Skyline Drive (F).................................       --      7,754        7,754        454
17 Skyline Drive (O).................................       --      7,334        7,334        348
2 Skyline Drive (O)..................................      109      3,138        3,247        150
200 Saw Mill River Road (F)..........................      353      3,421        3,774        168
30 Saw Mill River Road (O)...........................    2,356     37,055       39,411      1,921
4 Skyline Drive (F)..................................      363      7,884        8,247        460
7 Skyline Drive (O)..................................      330     13,049       13,379        108
8 Skyline Drive (F)..................................      212      4,495        4,707        229
TARRYTOWN
- -----------------------------------------------------
200 White Plains Road (O)............................      378      8,924        9,302        492
220 White Plains Road (O)............................      367      8,268        8,635        418
230 White Plains Road (R)............................      124      1,845        1,969         88
</TABLE>
 
                                      108
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
WHITE PLAINS
- -----------------------------------------------------
1 Barker Avenue (O)..................................  1975      1997            --          207      9,629             143
1 Water Street (O)...................................  1979      1997         3,298          211      5,382             107
11 Martine Avenue (O)................................  1987      1997        15,465          127     26,833           1,900
25 Martine Avenue (M)................................  1987      1997            --          120     11,366             129
3 Barker Avenue (O)..................................  1983      1997            --          122      7,864             337
50 Main Street (O)...................................  1985      1997        27,918          564     48,105           1,425
YONKERS
- -----------------------------------------------------
1 Enterprise Boulevard (L)...........................   N/A      1997            --        1,380         --              --
1 Executive Boulevard (O)............................  1982      1997           684        1,104     11,904             386
1 Odell Plaza (F)....................................  1980      1997            --        1,206      6,815              47
100 Corporate Boulevard (F)..........................  1987      1997         6,211          602      9,910              62
2 Executive Plaza (R)................................  1986      1997         7,722           89      2,439              --
200 Corporate Boulevard South (F)....................  1990      1997            --          502      7,575             137
3 Executive Plaza (O)................................  1987      1997            --          385      6,256              --
4 Executive Plaza (F)................................  1986      1997         1,528          584      6,134             275
5 Odell Plaza (F)....................................  1983      1997            --          331      2,988              --
6 Executive Plaza (F)................................  1987      1997            --          546      7,246              --
7 Odell Plaza (F)....................................  1984      1997            --          419      4,418              59
 
CHESTER COUNTY, PENNSYLVANIA
BERWYN
- -----------------------------------------------------
1000 Westlakes Drive (O).............................  1989      1997            --          619      9,016              97
1055 Westlakes Drive (O).............................  1990      1997            --        1,951     19,046             200
1205 Westlakes Drive (O).............................  1988      1997            --        1,323     20,098             287
1235 Westlakes Drive (O).............................  1986      1997            --        1,417     21,215             332
 
DELAWARE COUNTY, PENNSYLVANIA
LESTER
- -----------------------------------------------------
100 Stevens Drive (O)................................  1986      1996            --        1,349     10,018             114
200 Stevens Drive (O)................................  1987      1996            --        1,644     20,186             296
300 Stevens Drive (O)................................  1992      1996            --          491      9,490              76
MEDIA
- -----------------------------------------------------
1400 Providence Rd--Center I (O).....................  1986      1996            --        1,042      9,054             616
1400 Providence Rd.--Center II (O)...................  1990      1996            --        1,543     16,464             797
 
MONTGOMERY COUNTY, PENNSYLVANIA
LOWER PROVIDENCE
- -----------------------------------------------------
1000 Madison Avenue (O)..............................  1990      1997            --        1,713     12,559              88
PLYMOUTH MEETING
- -----------------------------------------------------
Five Sentry East (O).................................  1984      1996            --          642      7,992             403
Five Sentry West (O).................................  1984      1996            --          268      3,334              34
1150 Plymouth Meeting Mall (O).......................  1970      1997            --          125        499          20,355
 
FAIRFIELD COUNTY, CONNECTICUT
GREENWICH
- -----------------------------------------------------
500 West Putnam Avenue (O)...........................  1973      1998        11,471        3,300     16,734             200
NORWARK
- -----------------------------------------------------
40 Richards Avenue (O)...............................  1985      1998            --        1,087     18,399             143
SHELTON
- -----------------------------------------------------
1000 Bridgeport Avenue (O)...........................  1986      1997            --          773     14,934              12
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
WHITE PLAINS
- -----------------------------------------------------
1 Barker Avenue (O)..................................      207      9,772        9,979        477
1 Water Street (O)...................................      211      5,489        5,700        263
11 Martine Avenue (O)................................      127     28,733       28,860      1,295
25 Martine Avenue (M)................................      120     11,495       11,615        545
3 Barker Avenue (O)..................................      122      8,201        8,323        413
50 Main Street (O)...................................      564     49,530       50,094      2,401
YONKERS
- -----------------------------------------------------
1 Enterprise Boulevard (L)...........................    1,380         --        1,380         --
1 Executive Boulevard (O)............................    1,105     12,289       13,394        635
1 Odell Plaza (F)....................................    1,206      6,862        8,068        328
100 Corporate Boulevard (F)..........................      602      9,972       10,574        477
2 Executive Plaza (R)................................       89      2,439        2,528        117
200 Corporate Boulevard South (F)....................      502      7,712        8,214        283
3 Executive Plaza (O)................................      385      6,256        6,641        301
4 Executive Plaza (F)................................      584      6,409        6,993        342
5 Odell Plaza (F)....................................      331      2,988        3,319        143
6 Executive Plaza (F)................................      546      7,246        7,792        347
7 Odell Plaza (F)....................................      419      4,477        4,896        236
CHESTER COUNTY, PENNSYLVANIA
BERWYN
- -----------------------------------------------------
1000 Westlakes Drive (O).............................      619      9,113        9,732        425
1055 Westlakes Drive (O).............................    1,951     19,246       21,197        904
1205 Westlakes Drive (O).............................    1,323     20,385       21,708        947
1235 Westlakes Drive (O).............................    1,418     21,546       22,964        979
DELAWARE COUNTY, PENNSYLVANIA
LESTER
- -----------------------------------------------------
100 Stevens Drive (O)................................    1,349     10,132       11,481        507
200 Stevens Drive (O)................................    1,644     20,482       22,126      1,016
300 Stevens Drive (O)................................      491      9,566       10,057        479
MEDIA
- -----------------------------------------------------
1400 Providence Rd--Center I (O).....................    1,042      9,670       10,712        676
1400 Providence Rd.--Center II (O)...................    1,544     17,260       18,804      1,258
MONTGOMERY COUNTY, PENNSYLVANIA
LOWER PROVIDENCE
- -----------------------------------------------------
1000 Madison Avenue (O)..............................    1,714     12,646       14,360        418
PLYMOUTH MEETING
- -----------------------------------------------------
Five Sentry East (O).................................      642      8,395        9,037        445
Five Sentry West (O).................................      268      3,368        3,636        184
1150 Plymouth Meeting Mall (O).......................      125     20,854       20,979        407
FAIRFIELD COUNTY, CONNECTICUT
GREENWICH
- -----------------------------------------------------
500 West Putnam Avenue (O)...........................    3,300     16,934       20,234        352
NORWARK
- -----------------------------------------------------
40 Richards Avenue (O)...............................    1,087     18,542       19,629        157
SHELTON
- -----------------------------------------------------
1000 Bridgeport Avenue (O)...........................      773     14,946       15,719        505
</TABLE>
 
                                      109
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
STAMFORD
- -----------------------------------------------------
419 West Avenue (F)..................................  1986      1997            --        4,538      9,246               5
500 West Avenue (F)..................................  1988      1997            --          415      1,679              --
550 West Avenue (F)..................................  1990      1997            --        1,975      3,856               4
650 West Avenue (F)..................................  1998      1998            --        1,328         --           3,624
 
BEXAR COUNTY, TEXAS
SAN ANTONIO
- -----------------------------------------------------
111 Soledad (O)......................................  1918      1997            --        2,004      8,017              58
1777 N.E. Loop 410 (O)...............................  1986      1997            --        3,119     12,477             364
84 N.E. Loop 410 (O).................................  1971      1997            --        2,295     10,382              97
200 Concord Plaza Drive (O)..........................  1986      1997            --        2,387     31,825             318
 
COLLIN COUNTY, TEXAS
PLANO
- -----------------------------------------------------
555 Republic Place (O)...............................  1986      1997            --          942      3,767               2
 
DALLAS COUNTY, TEXAS
DALLAS
- -----------------------------------------------------
3030 LBJ Freeway (O).................................  1984      1997            --        6,098     24,366             734
3100 Monticello (O)..................................  1984      1997            --        1,940      7,762           4,084
8214 Westchester (O).................................  1983      1997            --        1,705      6,819              67
IRVING
- -----------------------------------------------------
2300 Valley View (O).................................  1985      1997            --        1,913      7,651             342
RICHARDSON
- -----------------------------------------------------
1122 Alma Road (O)...................................  1977      1997            --          754      3,015             100
 
HARRIS COUNTY, TEXAS
HOUSTON
- -----------------------------------------------------
10497 Town & Country Way (O).........................  1981      1997            --        1,619      6,476              79
14511 Falling Creek (O)..............................  1982      1997            --          434      1,738              99
1717 St. James Place (O).............................  1975      1997            --          909      3,636             116
1770 St. James Place (O).............................  1973      1997            --          730      2,920             173
5225 Katy Freeway (O)................................  1983      1997            --        1,403      5,610             156
5300 Memorial (O)....................................  1982      1997            --        1,283      7,269              81
 
POTTER COUNTY, TEXAS
AMARILLO
- -----------------------------------------------------
6900 IH--40 West (O).................................  1986      1997            --          287      1,147              48
 
TARRANT COUNTY, TEXAS
EULESS
- -----------------------------------------------------
150 West Park Way (O)................................  1984      1997            --          852      3,410              56
 
TRAVIS COUNTY, TEXAS
AUSTIN
- -----------------------------------------------------
1250 Capital of Texas Hwy. South (O).................  1985      1998            --        4,121     32,935             345
 
ARAPAHOE COUNTY, COLORADO
AURORA
- -----------------------------------------------------
750 South Richfield Street (O).......................  1997      1998            --        2,680     23,125              27
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
STAMFORD
- -----------------------------------------------------
419 West Avenue (F)..................................    4,538      9,251       13,789        445
500 West Avenue (F)..................................      415      1,679        2,094         80
550 West Avenue (F)..................................    1,975      3,860        5,835        185
650 West Avenue (F)..................................    1,328      3,624        4,952         30
BEXAR COUNTY, TEXAS
SAN ANTONIO
- -----------------------------------------------------
111 Soledad (O)......................................    2,004      8,075       10,079        212
1777 N.E. Loop 410 (O)...............................    3,119     12,841       15,960        346
84 N.E. Loop 410 (O).................................    2,296     10,478       12,774        271
200 Concord Plaza Drive (O)..........................    2,393     32,137       34,530        840
COLLIN COUNTY, TEXAS
PLANO
- -----------------------------------------------------
555 Republic Place (O)...............................      942      3,769        4,711         98
DALLAS COUNTY, TEXAS
DALLAS
- -----------------------------------------------------
3030 LBJ Freeway (O).................................    6,098     25,100       31,198        685
3100 Monticello (O)..................................    2,511     11,275       13,786        257
8214 Westchester (O).................................    1,705      6,886        8,591        178
IRVING
- -----------------------------------------------------
2300 Valley View (O).................................    1,913      7,993        9,906        200
RICHARDSON
- -----------------------------------------------------
1122 Alma Road (O)...................................      754      3,115        3,869         80
HARRIS COUNTY, TEXAS
HOUSTON
- -----------------------------------------------------
10497 Town & Country Way (O).........................    1,619      6,555        8,174        181
14511 Falling Creek (O)..............................      434      1,837        2,271         45
1717 St. James Place (O).............................      909      3,752        4,661        112
1770 St. James Place (O).............................      730      3,093        3,823         88
5225 Katy Freeway (O)................................    1,403      5,766        7,169        148
5300 Memorial (O)....................................    1,710      6,923        8,633        179
POTTER COUNTY, TEXAS
AMARILLO
- -----------------------------------------------------
6900 IH--40 West (O).................................      287      1,195        1,482         34
TARRANT COUNTY, TEXAS
EULESS
- -----------------------------------------------------
150 West Park Way (O)................................      852      3,466        4,318         89
TRAVIS COUNTY, TEXAS
AUSTIN
- -----------------------------------------------------
1250 Capital of Texas Hwy. South (O).................    4,121     33,280       37,401        760
ARAPAHOE COUNTY, COLORADO
AURORA
- -----------------------------------------------------
750 South Richfield Street (O).......................    2,682     23,150       25,832        444
</TABLE>
 
                                      110
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
DENVER
- -----------------------------------------------------
400 South Colorado Boulevard (O).....................  1983      1998            --        1,461     10,620             133
ENGLEWOOD
- -----------------------------------------------------
5350 South Roslyn Street (O).........................  1982      1998            --          862      6,831              30
9359 East Nichols Avenue (O).........................  1997      1998            --        1,155      8,171              19
 
BOULDER COUNTY, COLORADO
BROOMFIELD
- -----------------------------------------------------
105 South Technology Court (O).......................  1997      1998            --          653      4,936              14
303 South Technology Court-A (O).....................  1997      1998            --          623      3,892               4
303 South Technology Court-B (O).....................  1997      1998            --          623      3,892               4
LOUISVILLE
- -----------------------------------------------------
1172 Century Drive (O)...............................  1996      1998            --          707      4,647              16
248 Centennial Parkway (O)...........................  1996      1998            --          708      4,647              16
285 Century Place (O)................................  1997      1998            --          889     10,133              13
 
DENVER COUNTY, COLORADO
DENVER
- -----------------------------------------------------
3600 South Yosemite (O)..............................  1974      1998            --          556     12,980              28
 
DOUGLAS COUNTY, COLORADO
ENGLEWOOD
- -----------------------------------------------------
384 Inverness Drive South (O)........................  1985      1998            --          703      5,653              50
400 Inverness Drive (O)..............................  1997      1998            --        1,584     19,878              24
5975 South Quebec Street (O).........................  1996      1998            --          855     11,551              39
67 Inverness Drive East (O)..........................  1996      1998            --        1,034      5,516              10
PARKER
- -----------------------------------------------------
9777 Pyramid Court (O)...............................  1995      1998            --        1,304     13,189              25
 
EL PASO COUNTY, COLORADO
COLORADO SPRINGS
- -----------------------------------------------------
1975 Research Parkway (O)............................  1997      1998            --        1,397     13,221              --
 
JEFFERSON COUNTY, COLORADO
LAKEWOOD
- -----------------------------------------------------
141 Union Boulevard (O)..............................  1985      1998            --          774      6,891             276
 
MARICOPA COUNTY, ARIZONA
GLENDALE
- -----------------------------------------------------
5551 West Talavi Boulevard (O).......................  1991      1997         6,717        2,732     10,927           5,743
PHOENIX
- -----------------------------------------------------
19640 North 31st Street (O)..........................  1990      1997         7,112        3,437     13,747               4
20002 North 19th Avenue (O)..........................  1986      1997         3,386        1,843      7,371              15
SCOTTSDALE
- -----------------------------------------------------
9060 E. Via Linda Boulevard (O)......................  1984      1997            --        3,720     14,879              --
 
SAN FRANCISCO COUNTY, CALIFORNIA
SAN FRANCISCO
- -----------------------------------------------------
760 Market Street (O)................................  1908      1997            --        5,588     22,352          36,844
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
DENVER
- -----------------------------------------------------
400 South Colorado Boulevard (O).....................    1,461     10,753       12,214        176
ENGLEWOOD
- -----------------------------------------------------
5350 South Roslyn Street (O).........................      862      6,861        7,723        169
9359 East Nichols Avenue (O).........................    1,155      8,190        9,345        154
BOULDER COUNTY, COLORADO
BROOMFIELD
- -----------------------------------------------------
105 South Technology Court (O).......................      653      4,950        5,603        101
303 South Technology Court-A (O).....................      623      3,896        4,519         98
303 South Technology Court-B (O).....................      623      3,896        4,519         98
LOUISVILLE
- -----------------------------------------------------
1172 Century Drive (O)...............................      707      4,663        5,370        122
248 Centennial Parkway (O)...........................      708      4,663        5,371        122
285 Century Place (O)................................      891     10,144       11,035        176
DENVER COUNTY, COLORADO
DENVER
- -----------------------------------------------------
3600 South Yosemite (O)..............................      556     13,008       13,564        225
DOUGLAS COUNTY, COLORADO
ENGLEWOOD
- -----------------------------------------------------
384 Inverness Drive South (O)........................      703      5,703        6,406        129
400 Inverness Drive (O)..............................    1,584     19,902       21,486        352
5975 South Quebec Street (O).........................      856     11,589       12,445        253
67 Inverness Drive East (O)..........................    1,035      5,525        6,560        139
PARKER
- -----------------------------------------------------
9777 Pyramid Court (O)...............................    1,305     13,213       14,518        320
EL PASO COUNTY, COLORADO
COLORADO SPRINGS
- -----------------------------------------------------
1975 Research Parkway (O)............................    1,397     13,221       14,618        256
JEFFERSON COUNTY, COLORADO
LAKEWOOD
- -----------------------------------------------------
141 Union Boulevard (O)..............................      775      7,166        7,941        163
MARICOPA COUNTY, ARIZONA
GLENDALE
- -----------------------------------------------------
5551 West Talavi Boulevard (O).......................    3,593     15,809       19,402        336
PHOENIX
- -----------------------------------------------------
19640 North 31st Street (O)..........................    3,437     13,751       17,188        359
20002 North 19th Avenue (O)..........................    1,843      7,386        9,229        192
SCOTTSDALE
- -----------------------------------------------------
9060 E. Via Linda Boulevard (O)......................    3,720     14,879       18,599        388
SAN FRANCISCO COUNTY, CALIFORNIA
SAN FRANCISCO
- -----------------------------------------------------
760 Market Street (O)................................   13,499     51,285       64,784        852
</TABLE>
 
                                      111
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                                                   SCHEDULE III
                                                                                             INITIAL COSTS           COSTS
                                                             YEAR                        ---------------------    CAPITALIZED
                                                       ----------------     RELATED               BUILDING AND     SUBSEQUENT
PROPERTY LOCATION (2)                                  BUILT   ACQUIRED   ENCUMBRANCES    LAND    IMPROVEMENTS   TO ACQUISITION
- -----------------------------------------------------  -----   --------   ------------   -------  ------------   --------------
<S>                                                    <C>     <C>        <C>            <C>      <C>            <C>
HILLSBOROUGH COUNTY, FLORIDA
TAMPA
- -----------------------------------------------------
501 Kennedy Boulevard (O)............................  1982      1997            --        3,959     15,837             127
 
POLK COUNTY, IOWA
WEST DES MOINES
- -----------------------------------------------------
2600 Westown Parkway (O).............................  1988      1997            --        1,708      6,833              39
 
DOUGLAS COUNTY, NEBRASKA
OMAHA
- -----------------------------------------------------
210 South 16th Street (O)............................  1894      1997            --        2,559     10,236              81
 
DISTRICT OF COLUMBIA
WASHINGTON
- -----------------------------------------------------
1400 L Street, NW (O)................................  1987      1998            --       13,054     27,423             166
1709 New York Avenue, NW (O).........................  1972      1998            --       19,898     29,686             158
 
PRINCE GEORGE'S COUNTY, MARYLAND
LANHAM
- -----------------------------------------------------
4200 Parliament Place (O)............................  1989      1998            --        2,114     13,546             198
 
PROJECTS UNDER DEVELOPMENT...........................                            --       40,200         --           4,418
 
FURNITURE, FIXTURES & EQUIPMENT......................                            --           --         --           5,686
                                                                          ------------   -------  ------------   --------------
TOTALS...............................................                       $749,331     $488,872 2,$584,351        $394,576
                                                                          ------------   -------  ------------   --------------
                                                                          ------------   -------  ------------   --------------
 
<CAPTION>
 
                                                        GROSS AMOUNT AT WHICH CARRIED
                                                           AT CLOSE OF PERIOD (1)
                                                       -------------------------------
                                                                BUILDING AND            ACCUMULATED
PROPERTY LOCATION (2)                                   LAND    IMPROVEMENTS    TOTAL   DEPRECIATION
- -----------------------------------------------------  -------  ------------   -------  -----------
<S>                                                    <C>      <C>            <C>      <C>
HILLSBOROUGH COUNTY, FLORIDA
TAMPA
- -----------------------------------------------------
501 Kennedy Boulevard (O)............................    3,959     15,964       19,923        415
POLK COUNTY, IOWA
WEST DES MOINES
- -----------------------------------------------------
2600 Westown Parkway (O).............................    1,708      6,872        8,580        183
DOUGLAS COUNTY, NEBRASKA
OMAHA
- -----------------------------------------------------
210 South 16th Street (O)............................    2,559     10,317       12,876        271
DISTRICT OF COLUMBIA
WASHINGTON
- -----------------------------------------------------
1400 L Street, NW (O)................................   13,054     27,589       40,643        406
1709 New York Avenue, NW (O).........................   19,898     29,844       49,742        444
PRINCE GEORGE'S COUNTY, MARYLAND
LANHAM
- -----------------------------------------------------
4200 Parliament Place (O)............................    2,114     13,744       15,858        164
PROJECTS UNDER DEVELOPMENT...........................   40,200      4,418       44,618          4
FURNITURE, FIXTURES & EQUIPMENT......................       --      5,686        5,686      1,716
                                                       -------  ------------   -------  -----------
TOTALS...............................................  $510,534 2,$957,265     $3,467,799  $177,934
                                                       -------  ------------   -------  -----------
                                                       -------  ------------   -------  -----------
</TABLE>
 
- ----------------------------------
 
(1) The aggregate cost for federal income tax purposes at December 31, 1998 was
    approximately $2.31 billion.
 
(2) Legend of Property Codes:
 
<TABLE>
<S>                                         <C>
(O)=Office Property                         (M)=Multi-family Residential Property
(F)=Office/Flex Property                    (R)=Stand-alone Retail Property
(I)=Industrial/Warehouse Property           (L)=Land Lease
</TABLE>
 
                                      112
<PAGE>
                             MACK-CALI REALTY, L.P.
 
              REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
                               DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
 
                          MACK-CALI REALTY CORPORATION
                              NOTE TO SCHEDULE III
 
    Changes in rental properties and accumulated depreciation for the periods
ended December 31, 1998, 1997 and 1996 are as follows:
 
<TABLE>
<CAPTION>
                                                                                            1998          1997         1996
                                                                                        ------------  ------------  ----------
<S>                                                                                     <C>           <C>           <C>
RENTAL PROPERTIES:
- --------------------------------------------------------------------------------------
Balance at beginning of year..........................................................  $  2,629,616  $    853,352  $  387,675
  Additions...........................................................................       838,183     1,776,264     473,371
  Retirements/Disposals...............................................................            --            --      (7,694)
                                                                                        ------------  ------------  ----------
Balance at end of year................................................................  $  3,467,799  $  2,629,616  $  853,352
                                                                                        ------------  ------------  ----------
                                                                                        ------------  ------------  ----------
Accumulated Depreciation:
Balance at beginning of year..........................................................  $    103,133  $     68,610  $   59,095
  Depreciation expense................................................................        74,801        34,523      12,810
  Retirements/Disposals...............................................................            --            --      (3,295)
                                                                                        ------------  ------------  ----------
Balance at end of year................................................................  $    177,934  $    103,133  $   68,610
                                                                                        ------------  ------------  ----------
                                                                                        ------------  ------------  ----------
</TABLE>
 
                                      113

<PAGE>
                                                                    Exhibit 10.1




                           AGREEMENT OF LIMITED PARTNERSHIP
                                         OF
                          HPMC DEVELOPMENT PARTNERS, L.P.
                           A DELAWARE LIMITED PARTNERSHIP
                                          
                      DATED AS OF THE 23RD DAY OF APRIL, 1998




     THE INTERESTS ISSUED UNDER THIS AGREEMENT HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR REGISTERED OR
QUALIFIED UNDER THE APPLICABLE STATE SECURITIES LAWS, IN RELIANCE UPON
EXEMPTIONS FROM REGISTRATION AND QUALIFICATION PROVIDED IN THE SECURITIES ACT
AND THE APPLICABLE STATE SECURITIES LAWS, AND MAY NOT BE SOLD OR TRANSFERRED IN
THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND
QUALIFICATION OR REGISTRATION UNDER THE APPLICABLE STATE SECURITIES LAWS, OR AN
OPINION OF COUNSEL SATISFACTORY TO THE ISSUER THAT SUCH REGISTRATION OR
QUALIFICATION IS NOT REQUIRED.

     IN ADDITION, THE INTERESTS ISSUED UNDER THIS AGREEMENT MAY BE SOLD OR
TRANSFERRED ONLY IN COMPLIANCE WITH THE RESTRICTIONS ON TRANSFER SET FORTH
HEREIN.


<PAGE>

                           AGREEMENT OF LIMITED PARTNERSHIP
                                          OF
                           HPMC DEVELOPMENT PARTNERS, L.P.
                            A DELAWARE LIMITED PARTNERSHIP


     THIS AGREEMENT OF LIMITED PARTNERSHIP ("Agreement") is made and entered
into as of the 23rd day of April, 1998, by and among HCG DEVELOPMENT, L.L.C., a
Delaware limited liability company, as the managing general partner ("Highridge
GP" or for so long as Highridge GP is a General Partner, the "Managing General
Partner"), SUMMIT PARTNERS I, L.L.C., a Delaware limited liability company, as a
limited partner (the "Highridge Limited Partner"), and  MACK-CALI CALIFORNIA
DEVELOPMENT ASSOCIATES L.P., a California limited partnership, as a limited
partner (the "Mack-Cali Limited Partner" and together with the Highridge Limited
Partner, the "Limited Partners"), with reference to the following:

                                       RECITALS
                                       --------

     A.   The Managing General Partner and the Limited Partners desire to form a
limited partnership pursuant to the provisions of the Revised Uniform Limited
Partnership Act of the State of Delaware, Delaware Code, Title 6 Sections
117-101, ET SEQ., as amended from time to time, and to constitute themselves as
HPMC DEVELOPMENT PARTNERS, L.P., a Delaware limited partnership (the
"Partnership") for the purposes set forth in Sections 1.5 and 1.11, and on the
terms and conditions set forth in this Agreement.

     B.   The Managing General Partner and each of the Limited Partners desires
to make its respective capital contributions to the Partnership as described in
this Agreement and to be admitted as a Partner of the Partnership.

     C.   In order to effect the foregoing, the parties hereto desire to enter
into this Agreement as set forth herein.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein (the receipt and sufficiency of which hereby are acknowledged
by each party hereto), the parties hereto, intending to be legally bound, agree
as follows:



                                           
<PAGE>

                                     ARTICLE 1
                                          
                                 GENERAL PROVISIONS

     1.1  FORMATION. The Managing General Partner, as the general partner, and
the Highridge Limited Partner and the Mack-Cali Limited Partner, as limited
partners, hereby form the Partnership as a limited partnership pursuant to the
terms of this Agreement and the Act.  This Agreement shall constitute the
agreement of limited partnership among the Partners.  All capitalized terms used
and not otherwise defined herein shall have the meanings set forth in Section
1.10 and Exhibit A.  The Partners further agree to take such other actions as
may from time to time be necessary or appropriate under the laws of the States
of Delaware and California with respect to the formation, operation,
qualification and continued good standing of the Partnership as a limited
partnership in such jurisdictions.

     1.2  NAME OF PARTNERSHIP.  Subject to Section 1.3., the name of the
Partnership shall be "HPMC DEVELOPMENT PARTNERS, L.P.," or such other name as
may be reasonably Approved by the General Partners from time to time.

     1.3  CERTIFICATE OF LIMITED PARTNERSHIP.  The Managing General Partner
shall execute the Certificate of Limited Partnership (the "CERTIFICATE") for the
Partnership, and the Managing General Partner shall (i) cause the Certificate to
be filed in the Office of the Secretary of State of the State of Delaware as
required by the Act, and (ii) cause the Partnership to take any other steps that
are necessary for the Partnership to own the Investments and operate the
Properties and to conduct the Partnership's business in Delaware and California,
promptly after the date hereof.  The Certificate shall be amended whenever, and
within the time periods, required by the Act, or otherwise when reasonably
Approved by the Partners.

     1.4  PRINCIPAL OFFICE, RESIDENT AGENT AND REGISTERED OFFICE.  The principal
office of the Partnership shall be located at 300 Continental Boulevard, Suite
360, El Segundo, California 90245, or at such other place or places as from time
to time be reasonably Approved by the General Partners; PROVIDED, HOWEVER, that
the Partnership shall at all times maintain a registered agent and an office in
the State of Delaware and the State of California.  The name and address of the
registered agent for service of process on the Partnership in the State of
Delaware is Paracorp Incorporated, 15 East North Street, Dover, Delaware 19901. 
The address of the registered office of the Partnership in the State of Delaware
is c/o Paracorp Incorporated, 15 East North Street, Dover, Delaware 19901.  The
name and address of the registered agent for service of process on the
Partnership in the State of California is Mark Abramson, Esq., 300 Continental
Boulevard, Suite 360, El Segundo, California  90245.  The address of the
registered office of the Partnership in the State of California shall be the
principal office of the Partnership.  Such principal office, registered agent or
registered office may be changed upon the reasonable Approval of the General
Partners, so long as in accordance with the Act; concurrently with any such
change, written notice thereof shall be



                                          2
<PAGE>

given to each Partner.  Promptly following execution and delivery of this
Agreement, and filing of the Certificate with the Secretary of State of the
State of Delaware, the Managing General Partner shall cause the Partnership to
register as a foreign limited partnership in the Office of the Secretary of
State of California and in such other jurisdictions as are necessary or
desirable.  Such registration shall be amended by the General Partners whenever
required by the laws of each such jurisdiction.

     1.5  PURPOSES OF PARTNERSHIP.  The purposes of the Partnership shall be:

          1.5.1     Subject to the other provisions of this Agreement, to
acquire the Investments for investment purposes, and to own, hold, rehabilitate,
develop with office buildings, manage, maintain, entitle, plat, subdivide,
operate, finance, refinance, rezone, improve, lease, and to sell, exchange or
otherwise dispose of the El Segundo Land (more particularly described on Exhibit
D-1) and the Summit Ridge Land (more particularly described on Exhibit D-2), and
any other property Approved by the Partners (as improved from time to time, the
"Properties") and interests therein, whether directly or through Investment
Entities formed by the Partnership as provided in Section 1.5.2.

          1.5.2     Subject to the other provisions of this Agreement, to
acquire any other assets that are incidental to the foregoing which have been
Approved by the Partners (the Properties and other assets owned by the
Partnership, including interests in Entities owning Properties or interests
therein, are referred to as the "Investments").  The Partnership shall, unless
otherwise Approved by the Partners, cause each Property to be acquired,
developed and owned by a separate limited liability company or limited
partnership formed by the Partnership for the purpose of acquiring the same or
interests therein (each such partnership or limited liability company, together
with any Entity in which such limited liability company or partnership owns a
direct or indirect equity ownership interest, an "Investment Entity"), and the
Partnership may form one or more other subsidiaries to serve as a general
partner of any limited partnership or as a member of any limited liability
company formed for Partnership purposes on terms reasonably Approved by the
Partners.  The Partnership may take all actions required or permitted to be
taken by it under each Investment Entity Agreement (such actions to be required
to be Approved by the Partners to the extent required by this Agreement).  The
Partnership may engage in any and all other general business activities
incidental or reasonably related to the foregoing.

     1.6  FUNDING PROPORTIONS; RESIDUAL PERCENTAGES

          1.6.1 The respective Funding Proportions and Residual Percentages in
the Partnership of the Partners are set forth on Exhibit B.

          1.6.2 Unless the context otherwise clearly indicates, the term
"interest" or "interests" in the Partnership shall include both General Partner
interests and Limited Partner interests.  A Partner's interest in the
Partnership shall mean and include its share of the capital


                                          3
<PAGE>

of the Partnership, its share of the Profits and Losses, its share of Gain or
Loss on Disposition and other tax items of the Partnership, its share of the
distributions of the Partnership, its Capital Account, and its other rights and
obligations, all as determined under this Agreement.

     1.7  OTHER QUALIFICATIONS.  At the expense of the Partnership, the General
Partners shall cause the Partnership to be qualified to do business in each
jurisdiction in which such qualification becomes necessary (including
California), on or before the date on which such qualification becomes
necessary.

     1.8  TERM OF PARTNERSHIP.  The term of the Partnership commenced as of the
date of filing the Certificate and shall continue until the Partnership shall be
dissolved, liquidated and terminated pursuant to the provisions of Article 8.

     1.9  TITLE TO PARTNERSHIP PROPERTY.  Unless otherwise Approved by the
Partners, legal title to all of the Partnership's assets, including the
Properties and the Investments, shall be held by the Partnership, either
directly or through Investment Entities formed by the Partnership to acquire
such assets.  It is expressly understood and agreed that the manner of holding
title to Partnership property is solely for the convenience of the Partners;
accordingly, legal representatives, beneficiaries, distributees, partners,
shareholders, members, successors or assigns of any Partner shall have no right,
title or interest in or to any such Partnership property by reason of the manner
in which title is held, but all such property shall be treated as Partnership
property subject to the terms of this Agreement.

     1.10 DEFINITIONS.  Capitalized terms that are used in this Agreement shall
have the meanings set forth on Exhibit A.

     1.11 AUTHORIZED ACTS.  In furtherance of its purposes, and subject to the
provisions of this Agreement, the Partnership and its General Partners shall
have the full power and authority to take in the Partnership's name all actions
that are necessary, useful, appropriate or helpful in connection therewith,
including the actions described in Section 5.1.1 hereof.


                                          4
<PAGE>

     1.12 AUTHORIZED REPRESENTATIVES.  The "Authorized Representatives" of a
Partner that is not a natural person shall be those representatives designated
by notice to all other Partners by such Partner from time to time to represent
such Partner in connection with the Partnership, unless and until replaced or
removed by notice from such Partner to all Partners.  The written statements and
representations of an Authorized Representative for a Partner that is not a
natural Person shall be the only authorized statements and representations of
such Partner with respect to the matters covered by this Agreement.  The initial
Authorized Representatives are (i) John S. Long, Eugene S. Rosenfeld, Steven A.
Berlinger and Jack Mahoney for the Highridge Partners, and (ii) Thomas Rizk,
Mitchell E. Hersh, Roger W. Thomas and Barry Lefkowitz for the Mack-Cali
Partners.  The written statement or representation of any one Authorized
Representative of such Partner shall be sufficient to bind such Partner with
respect to all matters pertaining to the Partnership.  The term "Approved by" or
"Consented to by" or "Consent of" or "satisfactory to" with respect to a Partner
that is not a natural Person means a decision or action which has been consented
to in writing by the Authorized Representative of such Partner (or orally to the
extent that the Partners have adopted a course of conduct pursuant to which
certain Approvals, other than those described below in this Section 1.12, are
granted orally), and with respect to a Partner who is an individual, means a
decision or action which has been consented to in writing by such individual. 
In order for a decision or action to be "Approved by the Partners" (or any
variation thereof), the decision or action must be Approved by at least one
Authorized Representative of each Partner who then continues to have Approval
rights with respect to such action or decision under this Agreement.  In order
for a decision or action to be "Approved by the General Partners" (or any
variation thereof), the decision or action must be Approved by at least one
Authorized Representative of each then General Partner.  Notwithstanding
anything in this Agreement to the contrary (including any course of conduct
regarding oral Approvals that has been adopted by the Partners), the following
Approvals must be given in writing (to the extent Approval is required therefor)
in order to be effective: (1) acquisition by the Partnership or an Investment
Entity of a Property other than the El Segundo Land and the Summit Ridge Land
(the acquisition of which hereby is Approved by the Partners  pursuant to the
Approved Development Plans with respect thereto that are described on Exhibit
C), (2) any borrowing by the Partnership or an Investment Entity, (3) the sale
or other disposition of any Investment or Property, (4) adopting or materially
modifying a Development Plan for any Property or any Approved Budget contained
therein, including any Approved Overhead Budget contained therein or Approved by
the Partners in connection therewith (the Partners hereby confirm that the
initial Approved Development Plan, Approved Budget, and Approved Overhead Budget
for each of the El Segundo Land and the Summit Ridge Land are described on
Exhibit C), (5) liquidating the Partnership or any Investment Entity and (6)
issuing a Funding Notice as provided in Section 2.1.2.1(ii).  Section 5.1.6.2
sets forth the procedure for obtaining Approvals.



                                          5
<PAGE>

                                      ARTICLE 2
                                           
                                CAPITAL CONTRIBUTIONS
                             AND ADDITIONAL CONTRIBUTIONS

     2.1  CAPITAL CONTRIBUTIONS.

          2.1.1     INITIAL CAPITAL CONTRIBUTIONS.  (a) Each Partner has
contributed the amount in cash to the capital of the Partnership that is set
forth for such Partner on Exhibit B as its Section 2.1.1 Contribution (Cash).

     (b)  The Highridge Partners hereby assign to the Partnership, by
contribution to the capital of the Partnership, their entire right, title and
interest in and to the land located in El Segundo California that is more
particularly described on Exhibit D-1 (the "El Segundo Land").  The aggregate
agreed value of the El Segundo Land (and its Gross Asset Value) that shall
constitute Section 2.1.1 Contributions of the Highridge Partners and shall be
credited to the Capital Accounts of the Highridge Partners (in the proportion
set forth on Exhibit B) equals $9,000,000, of which $7,000,000 shall constitute
Invested Capital of the Highridge Partners and $2,000,000 shall constitute the
"Highridge Subordinated Contributions" (on which Highridge Subordinated
Contribution Return accrues).  The Partnership shall contribute its interest in
the El Segundo Land to an Investment Entity prior to its development.  For
convenience, the foregoing contribution to the Partnership and subsequent
contribution by the Partnership to such Investment Entity may be accomplished by
a direct deed of title to the El Segundo Land from Affiliates of the Highridge
Partners to such Investment Entity (and such direct deed hereby is Approved by
the Partners).  The Highridge Partners shall timely execute and record such
documents as are necessary to reflect the transfer of legal title to the El
Segundo Land to such Investment Entity (in form reasonably Approved by the
Mack-Cali Limited Partner).

          2.1.2     ADDITIONAL CAPITAL CONTRIBUTIONS.  

               2.1.2.1   GENERAL RULES.  Except as provided in this Section
2.1.2, no Partner shall be required to make any Capital Contributions other than
those described in Sections 2.1.1, 3.5.4 and 4.3.2.  Each Partner shall be
required to make additional Capital Contributions to the Partnership if any
General Partner or the Mack-Cali Limited Partner gives notice to all Partners (a
"Funding Notice") that meets the requirements of this Section 2.1.2.  If a
Funding Notice is properly issued, the amount of additional Capital
Contributions so required from each Partner ("Required Additional
Contributions") shall be (except as otherwise provided in this Section 2.1.2)
the amount to be contributed by such Partner pursuant to the Sections of this
Agreement referenced below in this Section 2.1.2.1 upon the occurrence of the
circumstances giving rise to the obligation of one or more of the Partners to
make such Required Additional Contributions under this Agreement, as specified
in such


                                          6
<PAGE>

Funding Notice (the collective dollar obligation of the Partners with respect
thereto for such Funding Notice is referred to as a "Shortfall"):  

          (i)  the Mack-Cali Partners shall be required to fund 100% of any
     additional Required Additional Contributions in order to make the Capital
     Equalization Distribution described in Section 2.1.2.3;

          (ii) except as specifically Approved in writing by the Partners after
     the execution of this Agreement, no Funding Notice may be issued except to
     the extent amounts described in preceding clause (i) or clause (iii) of
     this Section 2.1.2.1, and/or in Sections 3.5.4 and 4.3.2 are required to be
     contributed to the Partnership by one or more Partners; and 







                                          7
<PAGE>

          (iii)     Notwithstanding any provision of this Agreement to the
     contrary, (a) if and to the extent that distributions have been made to the
     Partners pursuant to the preferential distribution thereof described in
     Sections 4.1.1 (d), (e) or (f) (but not pursuant to Section 2.1.2.3 except
     as provided below, and not in payment of Undistributed Highridge
     Subordinated Contributions or Undistributed Highridge Subordinated Return
     pursuant to the preferential distribution thereof described in Section
     4.1.2), such distributions shall be recontributed to satisfy any Shortfall
     of the Partnership other than a Shortfall described in clause (i) of this
     Section 2.2.2.1 (in the ratio distributed to the Partners under such
     Sections) in response to a Funding Notice concerning such Shortfall (such
     recontributions to constitute Required Additional Contributions for
     purposes of this Agreement); and (b) if and to the extent distributions
     have been made to the Highridge Partners pursuant to Section 2.1.2.3, the
     Highridge Partners shall recontribute (and the Mack-Cali Limited Partner
     shall contribute) in response to such Funding Notice (prior to making the
     recontributions described in preceding clause (a)) such portion of such
     distributions as are necessary for the Invested Capital of Highridge
     Partners and the Mack-Cali Limited Partner (determined after taking into
     account such recontribution by the Highridge Partners and contribution by
     the Mack-Cali Limited Partner) to be in the ratio of their respective
     Funding Proportions (such recontribution and contribution by such Partners
     to constitute Required Additional Contributions for all purposes of this
     Agreement).  

          Except as provided below, no Partner shall be required to issue a
     Funding Notice under any circumstances.  Notwithstanding the preceding
     sentence, the Managing General Partner shall be required to issue a Funding
     Notice within five (5) days after receiving notice from the Mack-Cali
     Limited Partner that a Funding Notice is required in order to fund the
     amounts described in this Section 2.1.2 that are then due and payable (the
     Mack-Cali Limited Partner shall not be required to issue such a notice
     under any circumstances).  A Funding Notice may be issued by the Mack-Cali
     Limited Partner if the Managing General Partner shall fail to do so within
     such 5-day period.  Each Funding Notice shall describe the Shortfall and
     set forth the Required Additional Contribution of each Partner as
     determined pursuant to this Section 2.1.2.  If a Funding Notice is properly
     issued as provided above in this Section 2.1.2, each Partner shall
     contribute its Required Additional Contributions on or before the Due Date
     therefor under Section 2.2.1.  The provisions of this Section 2.1.2 which
     provide that a Funding Notice must be validly issued before additional
     Capital Contributions are required to be made shall not affect in any way
     the obligation of any Partner to pay to the Partnership or to the other
     Partners, as the case may be, any amount required to be paid by such
     Partner to them under this Agreement (it being agreed that the issuance of
     a Funding Notice shall not be required in order for the Partnership or any
     Partner to enforce any such payment obligation).

               2.1.2.2   SPECIAL DISTRIBUTION.  Notwithstanding the other
provisions of this Agreement, to the extent the amount of the construction
financing for the El Segundo


                                          8
<PAGE>

Land and Summit Ridge Land exceeds $27.2 million but does not exceed $28.2
million, a special distribution shall be made to the Mack-Cali Limited Partner,
which distribution (a) shall be deemed to have been made pursuant to Section
4.1.1(c) in partial repayment of the Invested Capital of the Mack-Cali Limited
Partner (such distribution not to exceed $1 million), and (b) shall be made
prior to any other distributions to the Partners under Article 4.

               2.1.2.3        CAPITAL EQUALIZATION.  Notwithstanding any other
provision of this Agreement, at any time after the later to occur of (a) the
date that is one year after the date of this Agreement or (b) the El Segundo
Valuation Date, Highridge GP may elect, by notice to the Mack-Cali Limited
Partner to cause a special distribution to be made by the Partnership to the
Highridge Partners as provided in this Section 2.1.2.3 (the "Capital
Equalization Distribution").  The Capital Equalization Distribution shall be
made from cash on hand of the Partnership that is available for distribution to
the Partners under Sections 4.1.1, 4.1.2 and 4.2.3 before any distribution is
made under those Sections to the Partners.  To the extent there is insufficient
cash on hand to make the entire Capital Equalization Distribution, Highridge GP
may issue a Funding Notice to the Mack-Cali Limited Partner pursuant to which
the Mack-Cali Limited Partner shall be obligated to fund 100% of such deficit
(which amount shall be distributed to the Highridge Partners upon receipt by the
Partnership).   Any such contribution by the Mack-Cali Limited Partner shall
constitute Capital Contributions (and Invested Capital) of the Mack-Cali Limited
Partner for all purposes of this Agreement.  The maximum amount of such
contribution from the Mack-Cali Limited Partner shall not exceed the lesser of
(i) $4,000,000 or (ii) the maximum amount of Required Additional Contributions
then remaining with respect to the Mack-Cali Limited Partner.  The Capital
Equalization Distribution shall be deemed to be a distribution made to the
Highridge Partners under Section 4.1.1(c) in repayment of the Highridge
Partners' Invested Capital (pro rata to each Highridge Partner in proportion to
the then Invested Capital of each Highridge Partner).  The amount of the Capital
Equalization Distribution shall equal the amount that is necessary to cause the
Invested Capital of the Highridge Partners (determined after making the Capital
Equalization Distribution and taking into account any distributions to the
Partners made pursuant to Sections 2.1.1.2 above and 2.1.2.4 below) to equal 20%
of the aggregate Invested Capital of all Partners (determined after making the
Capital Equalization Distribution and after the Mack-Cali Limited Partner's
Invested Capital has been increased for purposes of this computation by any
Mack-Cali Limited Partner contribution that would then be required to be made
pursuant to this Section 2.1.2.3).  Notwithstanding the foregoing, in no event
shall the Capital Equalization Distribution exceed $4,000,000.

               2.1.2.4        MEZZANINE FINANCING.  The Mack-Cali Limited
Partner shall have the right, upon notice to the Highridge Partners but subject
to the reasonable Approval of the Managing General Partner, to cause the
Partnership to obtain Third Party Mezzanine Financing (with respect to which no
Partner or its Affiliates shall be required to provide any personal guaranties
of repayment without such Partner's Approval), PROVIDED, HOWEVER, that if such
financing is obtained, the Mack-Cali Limited Partner shall cause the Capital
Equalization Distribution to be made to the Highridge Partners as provided


                                          9
<PAGE>

in Section 2.1.2.3 prior to making any distributions to the Partners under
Article 4 thereafter (including distributions of the proceeds of such Third
Party Mezzanine Financing).  As an alternative to Mack-Cali making the
contribution described in Section 2.1.2.3 in order to make such Capital
Equalization Distribution, the Partners may accomplish the same result by making
first distributions to the Highridge Partners from the proceeds of such Third
Party Mezzanine Financing as necessary to place the Partners' Invested Capital
in the same ratio as if the contribution and distribution described in Section
2.1.2.3 had occurred.  Distributions to the Highridge Partners pursuant to this
Section 2.1.2.4 shall be deemed to have been made pursuant to Section 4.1.1(c)
in repayment of the Highridge Partners' Invested Capital.

          2.1.3     CONTRIBUTIONS OF SERVICES.  The Residual Percentage of any
Partner in excess of such Partner's Funding Proportion shall be deemed to be a
profits interest that has been received in exchange for services rendered or to
be rendered by such Partner to or for the benefit of the Partnership (such
excess Residual Percentage having no currently predictable distributions or
value).

     2.2  THIRD-PARTY LOANS AND ADDITIONAL CAPITAL CONTRIBUTIONS AND CAPITAL
CALLS.

          2.2.1     If a Funding Notice is properly given by a Partner pursuant
to Section 2.1.2, each Partner shall have the obligation, subject to the
limitations contained in Section 2.1.2, to contribute its Required Additional
Contributions within five (5) days after the later to occur of (i) the date on
which the Funding Notice with respect thereto has been received (or deemed
received under Section 9.5) or (ii) the required funding date that is set forth
in the Funding Notice (the expiration of such five-day period is referred to as
the "Due Date").  There shall be a cure period of five (5) days after the Due
Date for each Partner to contribute its Required Additional Contribution, as
provided in Section 2.2.2.

          2.2.2     If any Partner fails to contribute the full amount of its
Capital Contributions required to be made pursuant to Section 2.1.2 and Section
2.2.1 within five (5) days after the Due Date thereunder (such Partner and any
other Partner in such Partner's Partner Group thereupon being collectively
referred to as the "Defaulting Partner"), then, as the exclusive remedies of the
Partnership and the other Partners who are not Defaulting Partners (the
"Non-Defaulting Partners"), the Non-Defaulting Partner shall have the following
remedies, exercisable by notice from the Non-Defaulting Partners to the
Defaulting Partner: (i) to elect to treat the Defaulting Partner as a Terminated
Partner under Section 7.9 (and pursue the remedies under this Agreement that
apply after a Partner becomes a Terminated Partner), (ii) to cause the
Partnership to sue the Defaulting Partner for actual (and not consequential)
damages that shall be limited to the portion of the Defaulting Partner's share
of the Shortfall Disbursement that was not received timely, plus interest at the
rate equal to the lesser of (x) fifteen percent (15%) per annum or (y) the
maximum interest rate permitted by law, and plus the costs of collection, and
(iii) to elect to lend (or to cause the Non-Defaulting Partners' Affiliates to
lend), to the Defaulting Partner or to the Partnership, as Approved by the
Non-Defaulting Partners, the amount of such Capital Contribution that was not
made 


                                          10
<PAGE>

timely by the Defaulting Partner.  The remedies described in clauses (i), (ii)
and (iii) of this Section 2.2.2 shall be cumulative, and all or any of them may
be elected and apply simultaneously, except as provided in Section 2.2.2.1.

               2.2.2.1   If the Non-Defaulting Partners choose to lend (or to
cause their Affiliates to lend) the amount of the Required Additional
Contribution not made timely by the Defaulting Partner, the loan shall be a
recourse loan to the Partnership or to the Defaulting Partner, as elected by the
Non-Defaulting Partners, and shall bear interest, compounded monthly, at the
rate equal to the lesser of (i) the maximum interest rate permitted by law or
(ii) fifteen percent (15%) per annum, from the date such loan is made until the
date of repayment.  Such loan shall be deemed to have been made to the
Defaulting Partner (and not to the Partnership) only if the Non-Defaulting
Partners (or the Non-Defaulting Partners' Affiliate) has paid such amount
directly to the Partnership and specifies, by notice to the Partners given
within two (2) Business Days after such funding, that the loan is being made to
the Defaulting Partner, in which case (1) said amount shall be deemed to have
been contributed to the Partnership by the Defaulting Partner for purposes of
determining the Capital Contributions made by the Defaulting Partner, its
Invested Capital and the Preferred Return thereon, (2) the remedies against the
Defaulting Partner described in Sections 2.2.2(ii) and 9.2 shall not apply with
respect to said amount, and (3) the Defaulting Partner shall still be deemed to
be a Terminated Partner for purposes of applying the remedies contained in
Section 7.9 and for all other provisions of this Agreement.  Repayment of any
such loan to the Defaulting Partner shall be effected by the General Partners
being required to cause the Partnership to pay directly to the Non-Defaulting
Partners all distributions otherwise payable to the Defaulting Partner under
this Agreement as and when payable, instead of making such distributions to the
Defaulting Partner (with such distributions being deemed for all purposes to
have been made to the Defaulting Partner and then paid by the Defaulting Partner
to the Non-Defaulting Partners or their Affiliates, as the case may be). 
Repayment of any such loan to the Partnership shall be made as provided in
Section 4.1 and Section 4.2.2.  Any payments made with respect to loans
described in this Section 2.2.2.1 shall first be deemed to pay accrued but
unpaid interest, and then be deemed to repay principal.

               2.2.2.2   If none of the Partners timely contributes any portion
of its
 Required Capital Contribution pursuant to a Funding Notice, there shall be no
remedy of any Partner or the Partnership against any other Partner by reason of
the failure to make such Required Capital Contributions.

          2.2.3     Except as otherwise specifically set forth in this
Agreement, no Partner shall have the right (i) to withdraw such Partner's
Capital Contribution or to demand or receive the return of a Capital
Contribution or to make any claim to any portion of Partnership capital or (ii)
to demand or receive property other than cash in return for a Capital
Contribution or to receive any cash in return for a Capital Contribution.


                                          11
<PAGE>

          2.2.4     Except as expressly provided in this Agreement, no Partner
shall have personal liability to make any Capital Contribution.

          2.2.5     A deficit Capital Account of a Partner (or of a partner,
member or venturer of a Partner) shall not be deemed to be a liability of such
Partner (or of such partner, member or venturer) or an asset or property of the
Partnership (or any Partner).  Furthermore, no Partner shall have any obligation
to the Partnership, any other Partner or any creditor of any of them or of any
Investment Entity for any deficit balance in such Partner's Capital Account.

     2.3  USE OF CAPITAL CONTRIBUTIONS; CERTAIN EXPENSES.  The initial cash
Capital Contributions made pursuant to Section 2.1.1(a) shall be used as
follows:  (i) to pay unpaid third-party formation and start-up costs of the
Partnership and the Investment Entities, the acquisition costs of the
Investments (including the costs of entering into and performing under the
Acquisition Documents) that have been Approved by the Partners, and any
reimbursements (limited to each Partner's cost) included in the Initial Approved
Budget contained in the Approved Development Plan attached as Exhibit C with
respect to due diligence, formation and start-up expenditures; including
attorneys' fees and expenses and formation and qualification costs (and to
reimburse each Partner, limited to such Partner's cost, for portions thereof
already paid by such Partner or its Affiliates), such amounts (a) to include the
Partners' attorneys fees and expenses in connection with the preparation of this
Agreement, and the documents contemplated hereby, and (b) to be paid or
reimbursed to the Partners by the Partnership out of such Capital Contributions
promptly after invoices for such amounts are submitted to the Partnership and to
each Partner, and (ii) the balance, if any, shall be held in reserves pending
expenditure as set forth in an Approved Budget (or otherwise as Approved by the
Partners) or as permitted without such Approval under Section 5.1.3.2, Section
5.1.3.3 or Section 5.1.3.4; PROVIDED, HOWEVER, that $1 million of the expense
reimbursement with respect to the El Segundo Land and the Summit Ridge Land
payable to the Highridge Partners that is described on Exhibit M shall not be
paid currently as provided above but shall instead be paid to the Highridge
Partners as a Partnership expense, together with interest at an annual rate of
10% per annum from the Agreement Date to the date of payment, on the date which
is thirty days after the date on which this Agreement has been executed and
delivered by all parties hereto.  The Partners hereby confirm that the expense
reimbursements of the Highridge Partners that are described on Exhibit M have
been Approved by the Partners.

     2.4  PARTNER LOANS.  (a)  If available cash flow, borrowings and Capital
Contributions are insufficient for the reasonable requirements of the
Partnership, the Mack-Cali Limited Partner if it is not a Terminated Partner,
shall have the unilateral right (but not the obligation) to finance (directly,
or through an Affiliate) any Partnership expenditure at an interest rate equal
to the lesser of (i) ten percent (10%) per annum or (ii) the maximum rate
permitted by law, provided, however, that prior to making any loan pursuant to
this Section 2.4(a), the Mack-Cali Limited Partner shall, unless a Highridge
Partner is a Terminated Partner, give at least ten (10) Business Days prior
written notice to the Highridge


                                          12
<PAGE>

GP and offer to the Highridge Partners the opportunity to participate (in
proportion to the Partners' Funding Proportions) in such loan.  Any notice from
the Mack-Cali Limited Partner pursuant to this Section 2.4(a) shall specify the
amount of such loan, the share thereof which the Highridge Partners may lend and
the earliest date on which such loan is to be made to the Partnership (which
date shall not, except in case of Emergency, be earlier than ten (10) Business
Days after such notice is received by the Highridge GP).  The Highridge Partners
may participate in any loan pursuant to this Section 2.4(a), if at all, only by
delivery to the Mack-Cali Limited Partner, not later than the date specified in
such notice, of its share of such loan.  All loans described in this Section
2.4(a) shall be repayable as provided for in Sections 4.1 and 4.2.

     (b) [INTENTIONALLY OMITTED.] 

     2.5  CONTRIBUTIONS TO INVESTMENT ENTITIES.  Notwithstanding anything in
this Agreement to the contrary, to the extent that the reasonable needs of the
business of any Investment Entity require funding of expenditures in excess of
the reserves, other assets and available borrowings of the Partnership and such
Investment Entity that have been Approved by the Partners (whether in an
Approved Budget, Approved Development Plan or otherwise) for the payment thereof
other than with respect to a Property that is the subject of an Abandonment
Decision, (a) the Mack-Cali Limited Partner may (but shall not be required to)
elect, by notice to the Managing General Partner, or (b) the Managing General
Partner may (but shall not be required to) elect, by notice to the Mack-Cali
Limited Partner, to cause the Partnership to retain (in lieu of distributing the
same under Article 4) otherwise distributable Net Available Cash, Net Mortgage
Proceeds and Capital Receipts from any source (including other Properties and
Investment Entities) and cause the Partnership to contribute such amounts to
such Investment Entity for use by it for the payment of such expenditures;
PROVIDED, HOWEVER, that the maximum aggregate amount of cash that is retained
pursuant to all notices given pursuant to this Section 2.5 with respect to any
Investment Entity shall not exceed twenty-five percent (25%) of the Capital
Contributions made by the Partnership to such Investment Entity for all periods
(regardless of whether distributed back to the Partnership), other than Capital
Contributions made by the Partnership to such Investment Entity pursuant to this
Section 2.5.


                                      ARTICLE 3

                                INCOME TAX ALLOCATIONS

     3.1  ESTABLISHMENT AND MAINTENANCE OF CAPITAL ACCOUNTS; PARTNERSHIP STATUS.
The General Partners shall establish and cause the Partnership to maintain a
single book Capital Account for each Partner which reflects each Partner's
Capital Contributions to the Partnership and a single tax capital account which
reflects the adjusted tax basis of the Capital Contributions (including the El
Segundo Land and the amounts described in Section 2.1.2.2)


                                          13
<PAGE>

contributed by each Partner to the Partnership.  Each Capital Account and tax
capital account shall also reflect the allocations and distributions made
pursuant to Articles 3 and 4 and otherwise be adjusted in accordance with Code
Section 704 and the principles set forth in Regulations Sections 1.704-l(b) and
1.704-2.  In applying such principles, any expenditures of the Partnership
described in Code Section 705(a)(2)(B) or treated as Code Section 705(a)(2)(B)
expenditures pursuant to Regulations Section 1.704-l(b)(2)(iv)(i) shall be
allocated among the Partners in the same manner as such expenditures would be
allocated among the Partners pursuant to this Article 3 if such expenditures
were treated as additional items of deduction of the Partnership (as computed
for book purposes) that were recognized and required to be allocated among the
Partners pursuant to this Article 3 with respect to the Partnership Accounting
Year in which such expenditures were made.  The Partners intend that the
Partnership be treated as a partnership for tax purposes.

     3.2  PROFIT AND LOSS ALLOCATIONS.  Except as expressly provided to the
contrary in this Section 3.2, for purposes of determining Capital Account
balances under this Section 3.2, (a) Profit and Loss with respect to any
Partnership Accounting Year shall be allocated prior to reducing Capital
Accounts by any distributions with respect to such Partnership Accounting Year,
and (b) Section 3.2 shall be applied before applying Section 3.3.

          3.2.1     LOSS FROM OPERATIONS.  For each Partnership Accounting Year
from the Agreement Date until the termination of the Partnership, Loss from
Partnership operations shall be allocated among the Partners in the following
order of priority:

               3.2.1.1   First, among the Partners as necessary to cause each
Partner's
Capital Account balance to equal the sum of (i) the amount of Net Available Cash
that would be distributed to such Partner pursuant to Section 4.1 with respect
to such Partnership Accounting Year if the Partnership distributed all of the
Net Available Cash for such Partnership Accounting Year without any portion
thereof being withheld as reserves or reinvested, plus (ii) the amount that
would be distributed to such Partner pursuant to Sections 4.1 and 4.2.3 if the
Partnership (a) distributed all Capital Receipts and Net Mortgage Proceeds
received with respect to such Partnership Accounting Year (without any portion
thereof being retained as reserves or reinvested) pursuant to Section 4.1 and
(b) then sold all of its remaining assets (including its interest in every
Investment Entity) for their adjusted tax basis (or adjusted book basis in the
case of Revalued Property) and distributed the proceeds therefrom and its
reserves (net of debt repayments) to the Partners pursuant to Sections 4.1 and
4.2.3; and 

               3.2.1.2   Second, after giving effect to the allocations made
pursuant to Sections 3.2.1.1 among the Partners in proportion to the Partners'
respective Funding Proportions.

          3.2.2     PROFIT FROM OPERATIONS.  For purposes of applying Section
3.2.1 and this Section 3.2.2, a Partner's Capital Account balance shall be
deemed to be increased by such Partner's share of Partnership Minimum Gain and
Partner Nonrecourse Debt Minimum


                                          14
<PAGE>

Gain determined as of the end of such Partnership Accounting Year.  For each
Partnership Accounting Year, Profit from Partnership operations shall be
allocated among the Partners as necessary to cause the Capital Account balance
of each Partner to equal the sum of (i) the amount of Net Available Cash that
would be distributed to such Partner under Section 4.1 with respect to such
Partnership Accounting Year (if no portion thereof were withheld as reserves or
reinvested), plus (ii) the amount that would be distributed to such Partner
pursuant to Sections 4.1 and 4.2.3 if the Partnership (a) distributed all
Capital Receipts and Net Mortgage Proceeds received with respect to such
Partnership Accounting Year (without any portion thereof being retained as
reserves or reinvested) pursuant to Section 4.1, and (b) then sold all of its
remaining assets (including its interest in every Investment Entity) for their
adjusted tax basis (or adjusted book basis in the case of Revalued Property),
and distributed the proceeds therefrom and its reserves (net of debt repayments)
to the Partners pursuant to Sections 4.1 and 4.2.3. 

     3.3  ALLOCATIONS OF GAIN OR LOSS ON DISPOSITION.  For purposes of
determining Capital Account balances under this Section 3.3, Gain or Loss on
Disposition shall be allocated prior to reducing Capital Accounts by the
distributions of Capital Receipts from the Disposition.

          3.3.1     GAIN ON DISPOSITION.  Gain on Disposition shall be allocated
to the Partners in the following order of priority:

               3.3.1.1   First, to the Partners in proportion to, and to the
extent of, any deficit balances in their respective Capital Accounts until all
such Capital Accounts have been restored to zero; and 

               3.3.1.2   Second, after giving effect to the allocations made
pursuant to Section 3.3.1.1, among the Partners as necessary to cause the
Capital Account balance of each Partner to equal the sum of (i) the amount that
would be distributed to such Partner pursuant to Sections 4.1 if the Partnership
then distributed all of the proceeds received by the Partnership with respect to
such Disposition (net of debt repayments) and did not establish reserves or
reinvest any of the proceeds of such Disposition, plus (ii) the amount that
would be distributed to such Partner pursuant to Sections 4.1 and 4.2.3 if the
Partnership then sold all of its assets remaining after such Disposition and the
distribution of the proceeds of such Disposition for their adjusted tax basis
(or adjusted book basis in the case of Revalued Property) and distributed the
proceeds therefrom and its reserves (net of debt repayments) to the Partners
pursuant to Sections 4.1 and 4.2.3. 

          3.3.2     LOSS ON DISPOSITION.  Loss on Disposition shall be allocated
to the Partners in the following order of priority:

               3.3.2.1   First, among the Partners as necessary to cause each
Partner's


                                          15
<PAGE>

Capital Account balance to equal the sum of (i) the amount that would be
distributed to such Partner pursuant to Section 4.1 with respect to such
Disposition if the Partnership then distributed all of the proceeds received by
the Partnership with respect to such Disposition under Section 4.1. (net of debt
repayments) and did not establish reserves or reinvest any of the proceeds of
such Disposition, plus (ii) the amount that would be distributed to such Partner
pursuant to Sections 4.1 and 4.2.3 if the Partnership then sold all of its
assets remaining after such Disposition and the distribution for the proceeds of
such Disposition for their adjusted tax basis (or adjusted book basis in the
case of Revalued Property) and distributed the proceeds therefrom and its
reserves (net of debt repayments) to the Partners pursuant to Sections 4.1 and
4.2.3; and 

               3.3.2.2   Second, after giving effect to the allocations made
pursuant to
 Section 3.3.2.1, any balance among the Partners in proportion to the Partners'
respective Funding Proportions.

          3.3.3     RULES OF CONSTRUCTION.

               3.3.3.1        For purposes of applying Section 3.3 as a result
                              of a
Disposition, a Partner's Capital Account balance shall be deemed to be increased
by such Partner's share of Partnership Minimum Gain and Partner Nonrecourse Debt
Minimum Gain remaining after such Disposition as determined under the
Regulations under Code Section 704(b).

               3.3.2.2   Except as is otherwise provided in this Article 3, an
allocation  of Partnership taxable income or taxable loss to a Partner shall be
treated as an allocation to such Partner of the same share of each item of
income, gain, loss and deduction that has been taken into account in computing
such taxable income or taxable loss.

     3.4  MINIMUM GAIN CHARGEBACK AND QUALIFIED INCOME OFFSET.

          3.4.1     NO IMPERMISSIBLE DEFICITS.  Notwithstanding any other
provision of this Agreement, taxable loss or items of deduction (as computed for
book purposes)  shall not be allocated to a Partner to the extent that the
Partner has or would have, as a result of such allocations, an Adjusted Capital
Account Deficit.  Any taxable loss or items of deduction (as computed for book
purposes) which otherwise would be allocated to a Partner, but which cannot be
allocated to such Partner because of the application of the immediately
preceding sentence, shall instead be allocated to the other Partners.

          3.4.2     QUALIFIED INCOME OFFSET.  In order to comply with the
"qualified income offset" requirement of the Regulations under Code Section
704(b), and notwithstanding any other provision of this Agreement to the
contrary except Section 3.4.3 below, in the event a Partner for any reason
(whether or not expected) has an Adjusted Capital Account Deficit, items of
Profits and Gain on Disposition (consisting of a pro rata portion of each item
of


                                          16
<PAGE>

income comprising the Partnership's Profits and Gain on Disposition, including
both gross income and gain for the taxable year, all as computed for book
purposes) shall be allocated to such Partner in an amount and manner sufficient
to eliminate as quickly as possible the Adjusted Capital Account Deficit.

          3.4.3     MINIMUM GAIN CHARGEBACK. In order to comply with the
"minimum gain chargeback" requirements of Regulations Sections 1.704-2(f)(1) and
1.704-2(i)(4), and notwithstanding any other provision of this Agreement to the
contrary, in the event there is a net decrease in a Partner's share of
Partnership Minimum Gain and/or Partner Nonrecourse Debt Minimum Gain during a
Partnership taxable year, such Partner shall be allocated items of income and
gain (as computed for book purposes) for that year (and if necessary, other
years) as required by and in accordance with Regulations Sections 1.704-2(f)(1)
and 1.704-2(i)(4) before any other allocation is made.

     3.5  OTHER TAX ALLOCATION PROVISIONS.

          3.5.1     INCOME CHARACTERIZATION.  For purposes of determining the
character (as ordinary income or capital gain) of any Gain on Disposition
allocated to the Partners pursuant to Section 3.3 or 3.4, such portion of the
taxable income of the Partnership allocated pursuant to such Sections which is
treated as ordinary income attributable to the recapture of depreciation shall,
to the extent possible, be allocated among the Partners in the proportion which
(i) the amount of depreciation previously allocated to each Partner bears to
(ii) the total of such depreciation allocated to all Partners.  This Section
3.5.1 shall not alter the amount of allocations among the Partners pursuant to
Section 3.3 but merely the character of income so allocated.

          3.5.2     CHANGE IN RESIDUAL PERCENTAGES.    Notwithstanding the
                                                       foregoing, in
the event any Partner's Residual Percentage changes during a fiscal year for any
reason, including the Transfer of any interest in the Partnership or an
adjustment of the Partners' Residual Percentages hereunder, the allocations of
taxable income or loss under this Article 3, and distributions, shall be
adjusted as necessary to reflect the varying interests of the Partners during
such year using an interim closing of the books method as of the date of such
change, or such other method as is reasonably Approved by the Partners.

          3.5.3     MANDATORY ALLOCATIONS -- SECTION 704(C) AND PARTNER
NONRECOURSE DEBT.


                                          17
<PAGE>

               3.5.3.1   Notwithstanding the foregoing, (i) in the event Code
Section 704(c) or Code Section 704(c) principles applicable under Regulations
Section 1.704-1(b)(2)(iv) require allocations of income or loss of the
Partnership in a manner different than that set forth above, the provisions of
Code Section 704(c) and the Regulations thereunder shall control such
allocations among the Partners; and (ii) all tax deductions and taxable losses
of the Partnership (as computed for book purposes) that, pursuant to Regulations
Section 1.704-2(i), are attributable to a Partner Nonrecourse Debt for which a
Partner (or a Person related to such Partner under Treasury Regulations Section
1.752-4(b)) bears the economic risk of loss (within the meaning of Regulations
Section 1.752-2) shall be allocated to such Partner as required by Regulations
Section 1.704-2(c).

               3.5.3.2   Any item of income, gain, loss and deduction with
respect to any property (other than cash) that has been contributed by a Partner
to the capital of the Partnership or which has been revalued for Capital Account
purposes pursuant to Regulations Section 1.704-1(b)(2)(iv) and which is required
or permitted to be allocated to such Partner for income tax purposes under Code
Section 704(c) so as to take into account the variation between the tax basis of
such property and its fair market value at the time of its contribution or at
the time of its revaluation for Capital Account purposes pursuant to Regulations
Section 1.704-1(b)(2)(iv) (such contributed or revalued property, including the
El Segundo Land, is referred to as "Revalued Property") shall be allocated
solely for income tax purposes in the manner so required or permitted under Code
Section 704(c) using the "traditional method" described in Regulations Section
1.704-3(b) (or any successor Regulation), such allocations to be made as shall
be reasonably Approved by the Partners; PROVIDED, HOWEVER, that curative
allocations consisting solely of the special allocation of gain or loss upon the
sale or other disposition of the Revalued Property shall be made in accordance
with Regulations Section 1.704-3(c) to the extent necessary to eliminate any
disparity, to the extent possible, between the Partners' Capital Accounts and
tax capital accounts attributable to such property; and FURTHER PROVIDED,
however, that any other method allowable under applicable Regulations may be
used in connection with any Revalued Property as shall be Approved by the
Mack-Cali Limited Partner.  Allocations under this Section 3.5.3.2 are solely
for purposes of federal, state and local taxes and shall not affect, or in any
way be taken into account in computing, any Partner's Capital Account or share
of Profit, Loss, Gain or Loss on Disposition or other items or distributions
under any provision of this Agreement.  Notwithstanding anything in this
Agreement to the contrary, the determination of Gross Asset Value for any asset
contributed to the Partnership, distributed from the Partnership or any other
Revalued Property shall be as Approved by the Partners or as determined pursuant
to the appraisal proceeding described in Section 5.10(iii).  The Gross Asset
Value of the El Segundo Land is set forth in Section 2.1.1(b).

          3.5.4     GUARANTEE OF PARTNERSHIP INDEBTEDNESS.  Except for
arrangements expressly described in this Agreement (including loans described in
Section 2.2.2 or Section 2.4), and except for any guaranties issued by the
Managing General Partner and its Affiliates in connection with financing of the
Partnership (the "Managing General Partner Guaranties"),


                                          18
<PAGE>

no Partner shall enter into (or permit any Person related to the Partner to
enter into) any arrangement with respect to any liability of the Partnership
that would result (for any reason other than the general liability of a General
Partner for the liabilities of the Partnership) in such Partner (or a Person
related to such Partner under Regulations Section 1.752-4(b)) bearing the
economic risk of loss (within the meaning of Regulations Section 1.752-2) with
respect to such liability unless such arrangement has been Approved by the
Partners or is otherwise permitted by this Agreement.  This Section 3.5.4 shall
not prohibit any General Partner, Limited Partner or Affiliate of a Partner
electing to participate therein from making a loan described in Section 2.2.2 or
Section 2.4.  To the extent a Partner is permitted to guarantee the repayment of
any Partnership indebtedness under this Agreement, each of the other Partners
shall be afforded the opportunity to guarantee such Partner's pro rata share of
such indebtedness, determined in accordance with the Partners' respective
Funding Proportions.  If (a) a loan is to be made to the Partnership or any
Investment Entity, (b) such loan is guaranteed by any Partners or their
Affiliates (which guaranty shall occur only upon the Approval of such Partner),
(c) a Partner or an Affiliate of a Partner is required to pay, and pays, money
on account of such guaranty (including payments made pursuant to the Managing
General Partner Guaranties), and (d) the Partner making (or whose Affiliate
made) such payments is entitled to be indemnified by the Partnership with
respect to such payments under Section 5.5.2 and, after liquidating the
Partnership's assets in order to satisfy the indemnity contained in
Section 5.5.2, there are insufficient proceeds to entirely satisfy the indemnity
obligation of the Partnership to such Partner or such Affiliate with respect to
such payments, then the other Partners (the "Recontributing Partners") shall be
required to make Capital Contributions to the Partnership, within ten (10)
Business Days after receiving notice requesting reimbursement from the Partner
making (or whose Affiliate made) such payments, which notice may be given at any
time after the events described in clauses (a) through (d) of this Section 3.5.4
have occurred (or, if later, the Determination Date described in Section 5.9
with respect to such reimbursement), in the amount necessary for (i) the Partner
(and its Affiliates) making such payments, and (ii) the Recontributing Partners,
to bear the portion of such payments that has not been reimbursed under
Section 5.5.2 ("Unreimbursed Payments") in the "Appropriate Sharing Ratio"
(defined below).  In no event shall a Partner be required to make Capital
Contributions pursuant to this Section 3.5.4 in excess of the aggregate amount
distributed to the Recontributing Partner pursuant to Sections 4.1.1 and 4.2.3
(but not distributions made pursuant to Section 4.1.2 in payment of
Undistributed Highridge Subordinated Contributions or Undistributed Highridge
Subordinated Return).  Any such Capital Contributions so made shall immediately
be distributed to the Partner who made, or whose Affiliate made, such payments.

          The Appropriate Sharing Ratios of the Partners with respect to
Unreimbursed Payments shall be determined as follows:

               3.5.4.1   With respect to the portion of the Unreimbursed
Payments that does not exceed the aggregate amounts distributed to the Partners
for all periods pursuant to Sections 4.1.1(d), (e) and (f) (but not in payment
of Undistributed Highridge Subordinated


                                          19
<PAGE>

Contributions or Undistributed Highridge Subordinated Return pursuant to the
preferential distribution thereof described in Section 4.1.2), such Appropriate
Sharing Ratio of each Partner shall be the percentage of such distributions so
received by such Partner; and

               3.5.4.2   With respect to the portion of the Unreimbursed
Payments exceeding the aggregate amounts distributed to the Partners for all
periods pursuant to Sections 4.1.1(d), (e) and (f) (but not in payment of
Undistributed Highridge Subordinated Contributions or Undistributed Highridge
Subordinated Return pursuant to the preferential distribution thereof described
in Section 4.1.2), such Appropriate Sharing Ratio of each Partner shall be such
Partner's Funding Proportion.

          3.5.5     REFERENCES TO REGULATIONS.  Any reference in this Agreement
to a provision of final, proposed and/or temporary Regulations shall, in the
event such provision is modified or renumbered, be deemed to refer to the
successor provision as so modified or renumbered, but only to the extent such
successor provision applies to the Partnership under the effective date rules
applicable to such successor provision or the Partners otherwise so reasonably
Approve under applicable elections contained in such Regulations.

          3.5.6     TAX DEFINITIONS.

               3.5.6.1   "NONRECOURSE DEDUCTIONS" has the meaning set forth in
Regulations Section 1.704-2(c).  The amount of Nonrecourse Deductions for a
Partnership Accounting Year equals the excess, if any, of the net increase, if
any, in the amount of Partnership Minimum Gain during that fiscal year, over the
aggregate amount of any distributions during that fiscal year of proceeds of a
Nonrecourse Liability that are allocable to an increase in Partnership Minimum
Gain, determined according to the provisions of Regulations Section 1.704-2(c).







                                          20
<PAGE>

               3.5.6.2   "NONRECOURSE LIABILITY" has the meaning set forth in
Regulations Section 1.704-2(b)(3).

               3.5.6.3   "PARTNER NONRECOURSE DEBT MINIMUM GAIN" means an amount
with respect to each Partner Nonrecourse Debt, equal to the Partnership Minimum
Gain that would result if such Partner Nonrecourse Debt were treated as a
Nonrecourse Liability, determined in accordance with Regulations Section
1.704-2(i)(2).

               3.5.6.4        "PARTNER NONRECOURSE DEBT" has the meaning for
such term set forth in Regulations Section 1.704-2(b)(4).

               3.5.6.5        "PARTNER NONRECOURSE DEDUCTIONS" has the meaning
for such term set forth in Regulations Section 1.704-2(i).  The amount of
Partner Nonrecourse Deductions with respect to a Partner Nonrecourse Debt for a
Partnership Accounting Year equals the excess, if any, (i) of the net increase,
if any, in the amount of the Partnership Minimum Gain attributable to such
Partner Nonrecourse Debt during such Partnership Accounting Year, over (ii) the
aggregate amount of any distributions during such year to the Partner that bears
the economic risk of loss for such Partner Nonrecourse Debt to the extent such
distributions are from proceeds of such Partner Nonrecourse Debt and are
allocable to an increase in Partner Nonrecourse Debt Minimum Gain attributable
to such Partner Nonrecourse Debt, determined according to the provisions of
Regulations Section 1.704-2(i).

               3.5.6.6        "PARTNERSHIP MINIMUM GAIN" has the meaning
ascribed to such term in Regulations Section 1.704-2(d)(1) (and includes the
Partnership's share of the Partnership Minimum Gain of any Investment Entity).

     3.6  INTENT OF ALLOCATIONS.  The parties intend that the foregoing tax
allocation provisions of this Article 3 shall produce final Capital Account
balances of the Partners that would permit liquidating distributions, if such
distributions were made in accordance with final Capital Account balances
(instead of being made in the order of priorities set forth in Sections 4.1 and
4.2.3), to be made (after unpaid loans and interest thereon, including those
owed to Partners have been paid) in a manner identical to the order of
priorities set forth in Sections 4.1. and 4.2.3.  To the extent that the tax
allocation provisions of this Article 3 would fail to produce such final Capital
Account balances, (i) such provisions shall be amended by the Partners if and to
the extent necessary to produce such result and (ii) taxable income and taxable
loss of the Partnership for prior open years (or items of gross income and
deduction of the Partnership for such years) shall be reallocated among the
Partners to the extent it is not possible to achieve such result with
allocations of items of income (including gross income) and deduction for the
current year and future years, as reasonably Approved by the Partners.  This
Section 3.6 shall control notwithstanding any reallocation or adjustment of
taxable income, taxable loss, or items thereof by the Internal Revenue Service
or any other taxing authority.

     3.7  BASIS ELECTIONS.  In the event of a transfer of all or any part of a
Partner's interest in the Partnership, the Partnership shall elect to adjust the
basis of the Partnership's assets under Code Section 754 if reasonably Approved
by the Partners.  The transferor or


                                          21
<PAGE>

transferee of a Partnership interest shall pay all costs of preparing and filing
all instruments or documents necessary to effectuate such election if made.

     3.8  GENERAL ALLOCATION RULES.  The General Partners shall cause the Profit
and Loss of the Partnership and Gain or Loss on Disposition be allocated by the
Partnership's accountants with respect to each Partnership Accounting Year (or
part thereof) as of the end of, and within ninety (90) days after the end of,
such year, or as soon thereafter as is practically possible.  All Profit and
Loss and Gain or Loss on Disposition shall be allocated to the Partners shown on
the records of the Partnership to have been Partners as of the last day of the
Partnership Accounting Year for which such allocation is to be made, except
that, if a Partner sells or exchanges its interest in the Partnership or
otherwise is admitted as a substituted Partner, the Profit or Loss and Gain or
Loss on Disposition shall be allocated between the transferor and the transferee
by taking into account their varying interests during the Partnership Accounting
Year in accordance with Code Section 706(d), using the interim closing of the
books method or such other method as shall be reasonably Approved by the
Partners.

     3.9  SHARING OF PARTNERSHIP NONRECOURSE DEBT AND NONRECOURSE DEDUCTIONS.
Throughout the term of the Partnership, the nonrecourse debt of the Partnership
(other than Partner Nonrecourse Debt) and the Nonrecourse Deductions of the
Partnership shall be allocated for tax purposes among the Partners in accordance
with their respective Funding Proportions.  To the extent that any Partner's
share of such nonrecourse debt as so specified exceeds the amounts referred to
in Regulations Sections 1.752-3(a)(1) and (2), it is intended that the foregoing
shares shall be viewed and treated as reasonably consistent with allocations
(which have substantial economic effect) of some significant item of partnership
income or gain within the meaning of Regulations Section 1.752-3(a)(3).

     3.10 ADJUSTMENT OF GROSS ASSET VALUE.  Gross Asset Value, with respect to
any asset, shall be the adjusted basis for federal income tax purposes of that
asset, except as follows:

          3.10.1    The initial Gross Asset Value of any asset contributed by a
Partner to the Partnership shall be the fair market value of the asset on the
date of the contribution, as reasonably Approved by the Partners.  The Gross
Asset Value of the El Segundo Land is set forth in Section 2.2.1(b).  The Gross
Asset Value of any Pre-Formation Property is set forth in Section 2.1.2.2.

          3.10.2    The Gross Asset Values of all Partnership assets shall be
adjusted to equal the respective fair market values of the assets, as reasonably
Approved by the Partners (subject to Section 5.10(iii)):

               3.10.2.1  If the Partners reasonably Approve that an adjustment
is necessary or appropriate to reflect the relative economic interests of the
Partners in the Partnership, as a result of (i) the acquisition of an additional
interest in the Partnership by any new or existing Partner in exchange for more
than a DE MINIMIS capital contribution; or (ii) the


                                          22
<PAGE>

distribution by the Partnership to a Partner of more than a DE MINIMIS amount of
Partnership property as consideration for an interest in the Partnership; and

               3.10.2.2  As of the liquidation of the Partnership within the
meaning of Regulations Section 1.704-1(b)(2)(ii)(g).

          3.10.3         The Gross Asset Value of any Partnership asset
distributed to any Partner shall be the gross fair market value of the asset on
the date of distribution as reasonably Approved by the Partners (subject to
Section 5.10(iii)), less any liabilities assumed by the distributee Partner or
to which such asset is subject as of the time of distribution.

          3.10.4    The Gross Asset Values of Partnership assets shall be
increased or decreased to reflect any adjustment to the adjusted basis of the
assets under Code Section 734(b) or 743(b), but only to the extent that the
adjustment is taken into account in determining Capital Accounts under
Regulations Section 1.704-1(b)(2)(iv)(m), provided that Gross Asset Values shall
not be adjusted under this Section 3.10.4 to the extent that the Partners
reasonably Approve that an adjustment under Section 3.10.2 is necessary or
appropriate in connection with a transaction that would otherwise result in an
adjustment under this Section 3.10.4.

          After the Gross Asset Value of any asset has been determined or
adjusted under Section 3.10.1, 3.10.2 or 3.10.4, Gross Asset Value shall be
adjusted by the depreciation taken into account with respect to the asset for
purposes of computing Profits or Losses.

          Section 8.3.8 contains special rules for valuing distributions of
property other than cash that is received by the Partnership in connection with
the disposition of Partnership (or Investment Entity) assets.

     3.11 TAX PAYMENT LOANS.  On or before April 15 of each year, the
Partnership shall, upon the written request of any Partner who is not a
Terminated Partner ("Borrowing Partner"), lend (to the extent the Partnership
has available funds, determined prior to making distributions for the preceding
calendar year) (a "Tax Payment Loan") to the Borrowing Partner an amount equal
to the lesser of (i) the excess of (a) the Borrowing Partner's allocation of
Profits (computed without regard to tax-exempt income), Gain on Disposition (as
recomputed for tax purposes with reference to adjusted tax basis) and other
items of taxable income of the Partnership for the preceding calendar year,
reduced by the Borrowing Partner's allocation of Losses (computed without regard
to tax- exempt income), Loss on Disposition (as recomputed for tax purposes with
reference to adjusted tax basis) and other tax deductible items of the
Partnership for the preceding calendar year, multiplied by the Maximum Tax Rate,
over (b) the Borrowing Partner's distributions from the Partnership for such
preceding calendar year; or (ii) the excess of (a) the Borrowing Partner's
cumulative allocations of Profits (computed without regard to tax-exempt
income), Gain on Disposition (as recomputed for tax purposes with reference to 


                                          23
<PAGE>

adjusted tax basis) and other items of taxable income of the Partnership from
the Agreement Date through the end of the preceding calendar year, reduced by
the Borrowing Partner's cumulative allocation of Losses (computed without regard
to tax-exempt income), Loss on Disposition (as recomputed for tax purposes with
reference to adjusted tax basis) and other tax deductible items of the
Partnership from the Agreement Date through the end of the preceding calendar
year, multiplied by the Maximum Tax Rate applicable to such allocations, over
(b) the sum of (x) the Borrowing Partner's cumulative distributions from the
Partnership from the Agreement Date through the end of the preceding calendar
year (net of repayments thereof under Section 4.3.2) and (y) the outstanding
balance(s) of all the unpaid Tax Payment Loans to such Borrowing Partner.  A
copy of any request for a Tax Payment Loan shall be given by the requesting
Partner to the other Partner.  Such loan shall bear interest at an annual rate
equal to the lesser of (1) ten percent (10%) per annum, or (2) the maximum
interest rate permitted by law, and shall be repayable both (A) out of future
distributions to the Borrowing Partner (such payment to be made by withholding
such distributions, with such distributions being deemed to have been
distributed to the Borrowing Partner and then paid by the Borrowing Partner to
the Partnership), and (B) if earlier, upon the liquidation of the Partnership or
upon demand following the Borrowing Partner's ceasing for any reason to be a
Partner hereunder, which payments shall be made from (x) the distributions
otherwise payable to such Partner in connection with the liquidation (such
amounts being deemed to have been distributed to such Partner and then paid by
such Partner to the Partnership) and (y) to the extent such distributions are
insufficient, from such Partner's other assets.  If Tax Payment Loans are made
to any of the Highridge Partners, each of John S. Long and Eugene S. Rosenfeld
shall be personally and severally (but not jointly) liable for the payment of
fifty percent (50%) of (I) the unrepaid balance of any such Tax Payment Loan
made to the Highridge Partners after applying clauses (A) and (B) of the
preceding sentence of this Section 3.11 for all periods, plus (II) the costs of
collection, including reasonable attorneys fees and expenses.  Payments shall
first be applied to unpaid interest and then principal.  Tax Payment Loans made
to a Borrowing Partner shall be full recourse loans to such Borrowing Partner
and shall be evidenced by promissory notes in form Approved by the Partners.  To
the extent an allocation of Profits, Gain on Disposition or other items of
taxable income to a Borrowing Partner with respect to which a Tax Payment Loan
is to be made are attributable to one or more Investment Entities and the
Partnership does not otherwise have sufficient funds to make any Tax Payment
Loan requested by such Borrowing Partner, the Partnership shall seek to borrow
from the Investment Entities the necessary amounts (each such loan an
"Investment Entity Tax Loan").  The Partners shall use reasonable efforts to
cause each Investment Entity Agreement, including those with third parties, to
provide for the making of Investment Entity Tax Loans to the Partnership to the
extent required.  Each Investment Entity Tax Loan shall bear interest at the
same rate as a Tax Payment Loan and shall be repayable at the same time as the
related Tax Payment Loan is repayable above, with payments first being applied
to interest and then principal and paid by the Partnership to the appropriate
Investment Entity.  Except as provided in this Section 3.11, in no event shall
the Partnership or any Investment Entity be required to borrow money or to sell
any asset in order to fund any Tax Payment Loan.  Notwithstanding anything to
the contrary contained in this Section 3.11, no Tax Payment Loan shall be made
by the Partnership with respect to any calendar year without the Approval of the
Mack-Cali Limited Partner unless the Tax Payment Loan for such year is at least
$250,000.

     3.12 APPROVALS RELATING TO TAX ISSUES.


                                          24
<PAGE>

          Notwithstanding anything to the contrary contained in this Agreement,
except as provided in this Section 3.12, during all periods except after the
Mack-Cali Limited Partner has become a Terminated Partner, all material tax
elections, other decisions relating to taxes and tax returns, require only the
reasonable Approval of the Mack-Cali Limited Partner unless it then is a
Terminated Partner, PROVIDED, HOWEVER, that Highridge GP (unless it is then a
Terminated Partner) shall reasonably Approve any settlement with the Internal
Revenue Service or any other tax authorities (whether under Section 5.4 or
otherwise), and any extension of the statute of limitations, with respect to the
Highridge Partners.  Notwithstanding the other provisions of this Section 3.12,
and during all periods, the determination of Gross Asset Value for any property
shall require the reasonable Approval of the Partners, subject to the provisions
of Section 5.10(iii).


                                      ARTICLE 4
                                           
                                 LOAN REPAYMENTS AND
                                    DISTRIBUTIONS

     4.1  NET AVAILABLE CASH, NET MORTGAGE PROCEEDS AND CAPITAL RECEIPTS.  The
General Partners shall cause the Partnership's accountants (i) at the end of
each quarter, to determine the amount of Net Available Cash and, (ii) upon the
occurrence of any event giving rise to Net Mortgage Proceeds or Capital
Receipts, to determine the amount of such Net Mortgage Proceeds and Capital
Receipts, if any.  Subject to the Partnership's obligation, if any, to make the
Capital Equalization Distribution under Section 2.1.2.3, the distributions
described in Section 2.1.2.2 and 2.1.2.4, and to make Tax Payment Loans under
Section 3.11, all Net Available Cash, Net Mortgage Proceeds and Capital Receipts
for any period shall be distributed in the following order of priority, within
thirty (30) days after the end of each calendar quarter, after first repaying
any loans to the Partnership from the Partners under Sections 2.2.2.1 and 2.4
except as provided in this Section 4.1 (loans which have been outstanding the
longest shall be repaid first and if two or more Partners have loans which have
been outstanding for equal periods, repayment of such loans shall be made pro
rata, in proportion to such Partners' then respective loan balances, with
payments first repaying accrued but unpaid interest and then repaying
principal), and subject to the terms of Sections 4.2, 4.3 and 8.3.8 (and subject
to recontribution to the Partnership as provided in Section 4.3.2):

          4.1.1     Prior to the El Segundo Valuation Date:

          (a)  First, distributions shall be made to the Mack-Cali Partners to
     the extent of, and in proportion to, their respective Undistributed
     Preferred Return;

          (b)  Next, the balance shall be distributed to the Highridge Partners
     to the extent of, and in proportion to, their respective Undistributed
     Preferred Return;

          (c)  Next, the balance shall be distributed to the Partners, pro rata,
     to the extent of, and in proportion to, their respective Invested Capital;


                                          25
<PAGE>

          (d)  Next, the balance shall be distributed to the Highridge Partners
     to the extent of, and in proportion to, their respective Undistributed
     Highridge Subordinated Return;

          (e)  Next, the balance shall be distributed to the Highridge Partners
     to the extent of, and in proportion to, their respective Undistributed
     Highridge Subordinated Contributions; and

          (f)  Next, the balance shall be distributed to the Partners, pro rata,
     in proportion to their respective Residual Percentages.

          Notwithstanding the priority distributions contained in this Section
4.1.1, distributions shall be made to the Highridge Partners as provided in
Section 2.1.2.3 (which distributions shall be deemed to have been made pursuant
to this Section 4.1.1 to the extent, and in the manner, provided in Section
2.1.2.3).

          4.1.2     From and after the El Segundo Valuation Date, distributions
shall continue to be made in the order of priority set forth in Section 4.1.1
except that the provisions of Sections 4.1.1 (d) and 4.1.1 (e) shall cease to
apply, and notwithstanding the first paragraph of this Section 4.1, prior to
making distributions in the order of priority set forth in Section 4.1.1,
distributions shall (except as provided in Sections 2.1.2.2, 2.1.2.3 and
2.1.2.4) first be made to the Highridge Partners, pro rata, to the extent of,
and in proportion to, their respective Undistributed Highridge Subordinated
Return and Undistributed Highridge Subordinated Contributions (with such
distributions being deemed to first pay Undistributed Highridge Subordinated
Return and then to repay Undistributed Highridge Subordinated Contributions). 
Notwithstanding anything in this Agreement to the contrary, the Mack-Cali
Limited Partner shall have the option, exercisable by notice to Highridge GP
given at any time if accompanied by a check in the correct aggregate amount
payable to the Highridge Partners, to contribute to the Partnership (as
additional Capital Contributions) 80% of the sum of the then Undistributed
Highridge Subordinated Contributions and Undistributed Highridge Subordinate
Return, which contribution shall thereupon be distributed to the Highridge
Partners in payment of such amounts (at which time the Highridge Partners shall
be deemed to have contributed the remaining 20% thereof to the Partnership in
cash, as additional Capital Contributions, and to thereupon have received a
distribution thereof in full payment of the entire Highridge Undistributed
Subordinated Return and Highridge Undistributed Subordinated Contributions).

     4.2  PROCEEDS AND DISTRIBUTIONS IN LIQUIDATION.  Subject to Section 8.3.8,
the proceeds received by the Partnership in connection with the liquidation and
winding up of the Partnership shall be applied in the following order of
priority:

          4.2.1     First, to the payment of creditors of the Partnership (other
than the repayment of any unpaid Partner loans) except secured creditors whose
obligations will be assumed or otherwise transferred on a liquidation of the
Partnership property or assets;


                                          26
<PAGE>

          4.2.2     Next, to the payment of the expenses incurred in dissolution
and termination and then to the repayment of any unpaid Partner loans in the
same priority as is described in Section 4.1; and

          4.2.3     The balance, if any, shall be distributed to the Partners in
the order of priority set forth in Sections 4.1.1 and  4.1.2.

     4.3  GENERAL DISTRIBUTION RULES.

          4.3.1     The timing and amount of all distributions shall be in
accordance with Sections 4.1, 4.2, 8.3.8, 8.5 and 8.6.  All distributions of
cash shall be made to the Partners shown on the records of the Partnership to
have been Partners on the date of the distribution.  All distributions, upon
request by a Partner, shall be made by wire transfer in immediately available
funds to such Partner's account specified in such request.  Distributions of Net
Available Cash, Net Mortgage Proceeds and Capital Receipts made to a Partner
shall be deemed to be advances on account of such Partner's share of the
distributable amounts thereof.  For purposes of this Agreement, the term
"distributable" with respect to such distributions shall mean the amount of such
distributions as finally determined pursuant to the provisions of this Agreement
by the Partnership's accountants for the Partnership Accounting Year in respect
of which they were made and for the term of the Partnership.

          4.3.2     The Partnership's accountants shall determine whether there
has been an over-distribution to any Partner occurring by reason of a mistake at
the following times:  (i) within one hundred twenty (120) days after the end of
each Partnership Accounting Year and (ii) cumulatively during the term of this
Agreement within One Hundred Twenty (120) days after any disposition of an
Investment by the Partnership or all or substantially all of the investments of
any Investment Entity.  Any over-distribution to any Partner in respect of
either a Partnership Accounting Year or during the term of this Agreement shall
be repaid by such Partner to the Partnership and distributed to the Partner
which has received an under-distribution not later than thirty (30) days after
any Partner has given notice thereof to the other Partners, which notice shall
be given as soon as is practicable after the end of such Partnership Accounting
Year or such disposition of an Investment, as applicable.  If not paid within
thirty (30) days of such notice, the amount of any over-distribution shall
thereafter accrue interest at the lesser of (i) fifteen percent (15%) per annum
or (ii) the highest rate, if any, that would be permitted by applicable law
under these conditions.  Such returned over-distribution and any interest paid
with respect thereto as provided in this Section 4.3.2 shall be promptly
distributed by the Partnership to the Partners receiving any under-distribution
to the extent necessary to eliminate such under-distribution.  Notwithstanding
anything to the contrary in this Agreement, the obligation of the Partner
receiving an over-distribution to return such over-distribution to the
Partnership and any interest thereon shall constitute a recourse obligation of
such Partner (but not to the partners, members, managers, officers or
shareholders of such Partner or its members or partners).  Any over-distribution
returned to the Partnership shall have the same character as the character of
the corresponding, earlier distribution to the Partner which received such
over-distribution.  To the extent that any Partner or its Affiliates receives
any commitment fee, finders fee or other compensation (that is not expressly
permitted by this Agreement) by reason of the Partnership's or an Investment 


                                          27
<PAGE>

Entity's participation in an Investment or a Property, such fee or compensation
shall be deemed to be Net Available Cash of the Partnership when paid, and to
the extent such fee or compensation is received by such Partner or its
Affiliates and not by the Partnership, such fee or compensation shall be deemed
to be an over-distribution to such Partner under this Section 4.3.2 that must be
paid to the Partnership (any such Partner shall notify the other Partners of the
receipt thereof immediately upon receipt by it or its Affiliates).

     4.4  SOURCE OF DISTRIBUTIONS.  Except as provided in Section 4.3.2, each
Partner shall look solely to the assets of the Partnership for the return of its
Capital Contributions and its share of distributions and shall have no recourse
upon dissolution or otherwise against the other Partners except as provided in
this Agreement.  No holder of an interest in the Partnership shall have any
right to receive any distributions except as provided in this Agreement or any
right to demand or receive property other than cash upon dissolution and
termination of the Partnership.


ARTICLE 5

MANAGEMENT; DUTIES AND POWERS OF THE MANAGING GENERAL PARTNER; RIGHTS AND DUTIES
OF MANAGING GENERAL PARTNER

     5.1  MANAGEMENT OF BUSINESS; OFFICERS; PARTNER OBLIGATIONS; REIMBURSEMENTS;
MAJOR DECISIONS; RETAINED APPROVALS.

          5.1.1     MANAGEMENT; POWERS.   Subject to the Approval rights of the
Partners under this Agreement, the Partnership shall be managed by the Managing
General Partner, and no Limited Partner shall take part in the control of the
Partnership's business.  The Managing General Partner of the Partnership shall
be Highridge GP unless and until replaced by a Co-General Partner as provided in
Section 7.9.5 (thereafter, such Co-General Partner shall be the Managing General
Partner).  Except as otherwise provided in this Agreement (including the right
of the Mack-Cali Limited Partner to Approve Major Decisions under Section 5.1.5
and certain other Approvals granted to the Mack-Cali Limited Partner under this
Agreement), the Managing General Partner shall be responsible for supervising
and undertaking the business of the Partnership, implementing the supervision
procedures set forth on Exhibit J for employees of the Highridge Partners and
Affiliates of the Highridge Partners who are performing work relating to the
Partnership and the Properties, and shall make all decisions affecting the
day-to-day operations of the Partnership and the Investments and the Properties.
Except to the extent the Approval of the Partners, or the Approval of the
General Partners, or the Approval of a Mack-Cali Partner is expressly required
under this Agreement, no consent or Approval of any Limited Partner or
Co-General Partner shall be required with respect to any action or decision of
the Managing General Partner regarding Partnership or Investment Entity matters.
Whenever the Approval of the Partners is required, the Partners shall act
through their Authorized Representatives  as provided in Section 1.12.  No
Partner shall receive any compensation for serving as a General Partner or as
the Managing General Partner.  Each Partner shall cause each of its Authorized
Representatives to devote as much time as is reasonably necessary to fulfill
such Partner's obligations under this Agreement.


                                          28
<PAGE>

          The Managing General Partner, at Partnership expense, shall be
responsible for obtaining and providing the Partners (within a reasonable time
after request therefor has been made by any Partner) with any information that
the Managing General Partner reasonably deems appropriate (or that the Mack-Cali
Partners have requested) with respect to the Partnership, Investment Entities,
Investments and Properties, conducting due diligence concerning proposed
Investments and Properties, negotiating the purchase on behalf of the
Partnership of any Investments or Properties that are Approved by the Partners
for acquisition, and supervising and implementing the acquisition, financing,
development, stabilization and marketing programs that have been Approved by the
Partners, all pursuant to the supervision procedures set forth on Exhibit J. 
The Partners hereby Approve the acquisition and development of the El Segundo
Land and the Summit Ridge Land pursuant to the Approved Development Plans with
respect thereto that are described on Exhibit C, and each Partner shall use its
reasonable efforts to cause the Partnership and/or the Investment Entities to
obtain construction financing on each of such Properties as soon as possible
after the execution and delivery of this Agreement as necessary to implement
such Approved Development Plans (any Partner may propose such financing to the
other Partners for their Approval).  The due diligence documents provided to the
Mack-Cali Partners and their Affiliates prior to the execution and delivery of
this Agreement with respect to the El Segundo Land are listed on Exhibit K.  At
Partnership expense, the Highridge Partners shall provide to the Mack-Cali
Partners any additional information in the possession of the Highridge Partners
or their Affiliates concerning the El Segundo land within a reasonable time
after written request therefor is received from the Mack-Cali Limited Partner. 
Each General Partner, in extension and not in limitation of the powers given to
it by law or this Agreement, shall have full power and shall have the
obligation, without the necessity of obtaining the Approval of any other Partner
(except as otherwise set forth in this Agreement), and at the expense of the
Partnership, to take all actions required to conduct the day-to-day operations
of the Partnership and, subject to the availability of Partnership funds and the
funding limitations of Section 5.1.3.5, implement the Major Decisions and other
decisions that have been Approved by the Partners and pay expenses of the
Partnership to the extent the Approval of the other Partners with respect
thereto is not required under this Agreement.  The Managing General Partner
shall not have the power to implement any Major Decision unless such Major
Decision has been Approved by the Partners, as set forth in Section 5.1.6.2
hereof.  The Managing General Partner shall negotiate all documents with respect
to Investment and Property transactions that are Approved by the Partners (or
are permitted to be entered into without such Approval as provided in this
Agreement), including contracts with surveyors, architects, governmental
authorities and others concerning entitlements, easements, surveying,
landscaping, insuring, zoning, construction, grading, improvements, and the
like, all leases of space in the Properties on behalf of any Investment Entity,
offers and terms of sale of the Partnership and Investment Entity assets, and
contracts for necessary goods or services or borrowings regarding the
Investments and Properties; all to the extent Approved by the Partners from time
to time to the extent such Approval is required pursuant to this Agreement.  The
execution by any General Partner of any document shall be sufficient to bind and
shall be binding upon the Partnership for all purposes, and third parties shall
be entitled to rely on the authority of the Managing General Partner to take any
action on behalf of the Partnership.  Notwithstanding the foregoing, (i) the
Managing General Partner shall not take any action requiring Approval of the
Partners, or the Approval of the General Partners, or the Approval of a
Mack-Cali Partner


                                          29
<PAGE>

under this Agreement unless the provisions of this Agreement concerning such
Approval have been satisfied, and (ii) except as otherwise provided in
Section 5.9, no Co-General Partner shall exercise any authority with respect to
the matters with respect to which authority and responsibility has been given to
the Managing General Partner hereunder unless and until (a) the Managing General
Partner has become a Terminated Partner or a Removal Default has occurred with
respect to the Managing General Partner (thereafter, the Mack-Cali Limited
Partner may cause any Co-General Partner appointed by it to become the Managing
General Partner and to assume such authority and responsibility as provided in
Section 7.9), or (b) a Performance Default has occurred with respect to the
Managing General Partner concerning an Investment or Property (thereafter, the
Mack-Cali Limited Partner shall have the rights described in Section 5.10(ii)
and Section 7.9.5 with respect to such Property).  The Managing General Partner
(or a Co-Managing General Partner that has become the Managing General Partner
under Section 7.9) shall use its reasonable efforts to comply with all
provisions of this Agreement, and, at Partnership expense, to cause the
Partnership to comply with all applicable laws and regulations.  The cost of
preparing any Investment Entity Agreement shall be a Partnership expense.

          Subject to the other provisions of this Agreement including required
Approvals of the Partners under this Agreement, the Partnership, the General
Partners and the Partnership's officers appointed on its or their behalf under
Section 5.1.4.1 are hereby authorized:

               5.1.1.1   Subject to the Approved Budget limitations of Article
5, to pursue any rights of the Partnership (and cause each Investment Entity to
pursue any rights of such Investment Entity) with respect to each Investment and
Property pursuant to any agreement to which it (or such Investment Entity) is a
party, and to own and operate any Investment or any other asset acquired by the
Partnership pursuant to the provisions of this Agreement, including taking the
actions described in Section 1.5;

               5.1.1.2   To own the Investments (including Partnership
Interests) for investment purposes and to finance, sell, convey, assign,
transfer (including by contribution to a real estate investment trust or to a
partnership, limited liability Partnership or any other Entity in which a real
estate investment trust is a partner, member or owner of equity ownership
interests (collectively, a "REIT")) or mortgage the Investments (including the
Partnership Interests), any other asset of the Partnership or any of them, as
well as any personal property necessary, convenient or incidental to the
accomplishment of the purposes of the Partnership, all on terms as shall be
Approved by the Partners;

               5.1.1.3   To acquire by purchase or lease, any real or personal
property that may be necessary, convenient or incidental to other the
accomplishment of the purposes of the Partnership, including Investments and
interests in Investment Entities, and to cause Investment Entities to do so;

               5.1.1.4   To operate, maintain, improve, develop and lease any
assets acquired by the Partnership (and to cause Investment Entities to do so
with respect to assets acquired by them);


                                          30
<PAGE>

               5.1.1.5   To cause the Partnership to take any and all actions
necessary convenient or appropriate as a general partner or limited partner of
any partnership or as a member and/or manager of any limited liability company
in which the Partnership has an interest and exercise all rights or powers
relating thereto and execute appropriate documents on behalf of the Partnership
in connection therewith;

               5.1.1.6   To borrow money on behalf of itself or cause Investment
Entities to do so (whether secured or unsecured) and issue evidences of
indebtedness in furtherance of any or all of the purposes of the Partnership or
any Investment Entity, and to secure the same by mortgage, deed of trust, pledge
or other lien on any assets of the Partnership or any Investment Entity;

               5.1.1.7   To borrow money on the general credit of the
Partnership or any Investment Entity (and to cause Investment Entities to do so)
for use in the Partnership or any Investment Entity business;

               5.1.1.8   To enter into, perform and carry out contracts of any
kind, including contracts with Affiliates of any of the Partners, necessary to,
in connection with or incidental to the accomplishment of the purposes of the
Partnership or any Investment Entity;

               5.1.1.9   To issue Funding Notices calling for additional Capital
Contributions in accordance with the provisions of this Agreement;

               5.1.1.10  To enter into any kind of lawful activity and to
perform and carry out contracts of any kind necessary to or in connection with
or incidental to the accomplishment of the purposes of the Partnership, so long
as said activities and contracts may lawfully be carried on or performed by a
limited partnership under the laws of the states in which the Partnership is
qualified to do business.  Each General Partner is hereby authorized to cause
the Partnership to execute and deliver all documents and instruments necessary
or appropriate, in the reasonable judgment of such General Partner, to close any
of the transactions that have been Approved by the Partners (or that do not
require the Approval of the Partners or the Approval of the General Partners). 
Except as otherwise provided in this Agreement, no Partner shall cause the
Partnership to execute and deliver any acquisition, conveyance, loan or lease
documents without first obtaining the Approval of the Partners to the Material
terms of such document.  The Material terms with respect to certain of the
entitlement, acquisition, development, and leasing documents for the Summit
Ridge Land and the El Segundo Land have been Approved by the Partners and are
contained in the Approved Development Plans referred to on Exhibit C.  The
Material terms of any other document in connection with the acquisition,
entitlement, development, conveyance, loan or lease of a Property will be deemed
to have been Approved by the Partners if the actions described on Exhibit L
("Operating Approval Standards") have been Approved by the Partners with respect
to such Property.  Notwithstanding anything to the contrary contained in this
Agreement, the Mack-Cali Limited Partner shall have the right to Approve the
final version of any acquisition, conveyance, loan or lease document to which
the Partnership or any Investment Entity is to become a party if the Mack-Cali
Limited Partner has specifically requested by notice to Highridge GP that it
Approve the final version of such document before it is entered into;



                                          31
<PAGE>

PROVIDED, HOWEVER, that the Managing General Partner may, without the Approval
of any Mack-Cali Partner being required, execute and deliver on behalf of the
Partnership or any Investment Entity any lease of space in a Property unless any
of the following applies (in which case, the Mack-Cali Limited Partner shall
have the right to Approve such lease):  (a) the lease has a term of less than
five (5) years (determined without regard to renewal rights granted to the
tenant thereunder and with regard to early termination rights of the tenant
thereunder), (b) the lease has a term of greater than ten (10) years (including
any tenant renewal rights that are not exerciseable at market rates in effect at
the time of renewal), (c) the lease covers greater than 15% of the rentable
space in a Property or greater than 20,000 square feet of the rentable space in
a Property, (d) the lease rents are more than 5% below the budgeted rental rate
set forth in the most recent Approved Budget with respect to such Property, (e)
the lease provides for payment by the Partnership or an Investment Entity of
tenant improvements that are more than 5% above the permitted tenant improvement
amount parameters that have been Approved in advance by the Partners for such
Property (or, if no such tenant improvement parameters have been Approved in
advance by the Partners, the lease provides for such payment of tenant
improvements that are more than $30 per square foot of rentable space), (f) the
aggregate leasing commissions payable by the Partnership and Investment Entities
in connection with the lease are more than 5% above the leasing commission
parameters that have been Approved by the Partners (or if no such leasing
commission parameters have been Approved in advance by the Partners, more than
5% above prevailing market rate commissions then in effect for similar
properties in similar locations), or (g) the lease form is materially different
from the standard form of lease that has been Approved in advance by the
Partners for such Property; PROVIDED, HOWEVER, that once the terms of such
documents have been Approved by the Partners, any General Partner may cause the
Partnership to execute and deliver any such documents with such changes thereto
as shall be reasonably Approved by the General Partners, without further
Approval of the Partners being required unless such change adversely affects the
Partnership in a Material manner, and only one General Partner's execution of
such documents shall be required on behalf of the Partnership in order for such
documents to be binding on the Partnership.  Third parties shall be entitled to
rely on the authority of any General Partner to execute and deliver any document
on behalf of the Partnership without the execution thereof by any other Partner
being required.  For purposes of this Agreement, the term "Material" (or any
variation thereof) means any item that (i) would result in a difference to the
Partnership of at least $100,000 with respect to any such item, or at least
$500,000 in the aggregate for all such items, in each case for any 12-month
period, or (ii) would result in a change in the scope of any Property
development as set forth in an Approved Development Plan.  All construction
contracts having payments exceeding $100,000 shall require competitive bids,
copies of which shall be submitted to the Mack-Cali Limited Partner for review
before any such contract is entered into; and

               5.1.1.11  To enter into and to perform the Partnership's
obligations under any other agreement to which it becomes a party (and cause any
Investment Entity to do so).

          5.1.2     COMPENSATION; REIMBURSEMENT.  No compensation shall be
payable by the Partnership to any Partner or to an Affiliate of any Partner
unless provision for such compensation is made (a) in the Approved Development
Plans (including the Approved


                                          32
<PAGE>

Budgets and Approved Overhead Budgets) attached as Exhibit C that have been
Approved by the Partners, or (b) in any other subsequent Approved Development
Plan.  Unless reimbursement is prohibited under Section 5.5 or another provision
of this Agreement, the Partnership shall reimburse each Partner for its actual
and reasonable out-of-pocket expenses incurred in connection with Partnership
business to the extent such Partner is authorized to take the action resulting
in such expenses and is not otherwise reimbursed with respect thereto under this
Agreement or pursuant to an Approved Development Plan, subject to Sections 2.3
and 5.5. 

          5.1.3     BUDGETS

               5.1.3.1   ANNUAL OPERATING BUDGET; INVESTMENT BUDGETS; OVERHEAD
BUDGETS.  The Managing General Partner shall include in each proposed
Development Plan a proposed budget in connection with each Property and related
Investment, including the reasonably anticipated cash receipts therefrom, and
the reasonably anticipated costs of owning and operating such Property and
Investment, including costs of acquisition, insurance, entitlement, zoning,
development, landscaping, easements, subdivision, grading, infrastructure,
surveying, advertising, governmental approvals, operation, development,
management, leasing (including tenant improvements to be funded by the
Partnership if Approved by the Partners), repair, maintenance and renovation of
the Property for each Partnership Accounting Year, and shall deliver the same to
the Mack-Cali Limited Partner for its review and Approval.  Each such budget
shall contain the amount to be (i) expended from reserves with respect to each
Investment, and (ii) added to the reserves of the Partnership with respect to
each Investment, including reserves required by lenders to the Partnership. Each
such budget shall also forecast the amount and timing of distributions to the
Partnership with respect to each Investment for the period covered by such
budget.  At least annually (within 30 days prior to year-end), the Managing
General Partner shall also prepare and submit to the Partners for Approval a
budget for the operation of the Partnership for the following year that covers
those projected costs, if any, of operating the Partnership to the extent the
same are not contained in the Approved Budgets in effect for the Investments and
Properties for such period (such budget to require the Approval of the Partners
before it becomes an Approved Budget).  The initial Approved Partnership
operating budget is contained in the Approved Development Plans described on
Exhibit C.  The Highridge Partners shall be entitled to receive non-accountable
overhead payments from the Partnership in connection with the services performed
by them, their Affiliates and the employees thereof for the benefit of the
Partnership and the Investment Entities with respect to the El Segundo Land and
the Summit Ridge Land (in full reimbursement of all of their internal costs with
respect thereto, and those of their Affiliates and employees and partners
thereof), payable in advance on the first day of each month in thirty (30) equal
monthly installments commencing as of January 1, 1998 (with the installments for
the months of January through April 1998 being payable upon the execution and
delivery of this Agreement by all of the Partners), equal (and limited in the
aggregate to) 2.5% of total development costs with respect thereto (the
"Overhead Payments") pursuant to the Approved Budget for such Properties (the
amount described in an Approved Budget for such Overhead Payments is referred to
as the "Approved Overhead Budget").  The obligation to make Overhead Payments
shall be a Partnership expense and shall be payable prior to making
distributions to Partners.  The unpaid Overhead Payments that are payable to


                                          33
<PAGE>

the Highridge Partners shall be limited to actual cost reimbursement (excluding
the salary, benefits and other compensation of John S. Long, Eugene S. Rosenfeld
and Steven A. Berlinger) from and after the date on which any Highridge Partner
has become a Terminated Partner or has committed a Removal Default.  The initial
Approved Budget (including the Approved Overhead Budget) for each of the El
Segundo Land and the Summit Ridge Land is contained in the Approved Development
Plans for such Properties that are described in Exhibit C. 

               5.1.3.2 APPROVED BUDGETS.  Each Authorized Representative of the
Mack-Cali Limited Partner shall have a period of ten (10) Business Days after a
proposed budget is submitted to them (whether or not submitted as part of a
proposed Development Plan) to notify the Managing General Partner in writing (i)
whether such Authorized Representative, on behalf of the Mack-Cali Limited
Partner, Approves the proposed budget or (ii) of any revisions such
representative believes should be made to such proposed budget.  A proposed
budget (or any proposed revision thereof) shall not be deemed to have been
Approved by the Mack-Cali Limited Partner unless actually Approved by at least
one Authorized Representative of the Mack-Cali Limited Partner within such
ten-day period.  If at least one Authorized Representative of the Mack-Cali
Limited Partner so Approves a proposed budget (or a Development Plan in which
such budget is contained), such budget shall be deemed Approved by the Partners
and shall constitute an "Approved Budget" for the Partnership for the applicable
Partnership Accounting Year covered thereby.  If within such ten (10) Business
Day period, the Mack-Cali Limited Partner does not Approve a budget for the
applicable Partnership Accounting Year with respect to any Investment or
Property, then the most recent Approved Budget for such Investment or Property
other than items in such budget consisting of additional investment outlays that
may be made at the discretion of the Partnership (such discretionary outlays are
referred to as "Discretionary Outlays"), shall continue as the Approved Budget
for the next Partnership Accounting Year with the following exceptions:  (a) all
extraordinary items for the current Partnership Accounting Year shall be
deleted; and (b) Non-Discretionary Items for the upcoming Partnership Accounting
Year shall be included at the actual cost.

               5.1.3.3 INITIAL BUDGET; SUPPLEMENTS.  The initial Approved
Budgets are contained in the Development Plans described in Exhibit C.  The
Managing General Partner shall cause the Partnership to prepare supplements or
revisions to each Approved Budget from time to time within a reasonable time
after it is reasonably likely that such Approved Budget will not be met or after
a request for such a supplement or revision is received by the Managing General
Partner from the Mack-Cali Limited Partner, or if the Managing General Partner
otherwise desires to do so, which supplements or revisions shall be submitted to
the Mack-Cali Limited Partner for Approval in the same manner as that which is
provided for the Approval of budgets under Section 5.1.3.2 (if and when so
Approved, such supplement or, revision shall become part of the Approved Budget
to which it relates).

               5.1.3.4 DEVELOPMENT PLANS.  The initial acquisition and
development plan with respect to the acquisition, development, renovation and
capital improvements, financing, stabilization and marketing currently Approved
for each of the El Segundo Land and the Summit Ridge Land is described on
Exhibit C (together with any other development


                                          34
<PAGE>

plan that has been Approved by the Partners from time to time, the "Development
Plans").  The Managing General Partner shall deliver to the Mack-Cali Limited
Partner (within a reasonable time after request therefor is made and the same
are available), for the Mack-Cali Limited Partner's Approval, all plans and
specifications and any schematic and conceptual presentations for the proposed
development of each Property, and shall also deliver to the Mack-Cali Limited
Partner within a reasonable time after request such other details and
information regarding the Partnership, Investment Entities, Investments and the
Properties as the Mack-Cali Limited Partner shall reasonably request from time
to time, including proposals as to the identity of architectural and engineering
firms, construction contractors, construction managers, property managers, and
other consultants to be used to implement the Subsequent Development Plan.  No
architectural or engineering firm, construction contractor, construction manager
or property manager,  shall be retained with respect to any Property without the
Mack-Cali Limited Partner's Approval.  The Managing General Partner shall modify
and update any Development Plan on at least a quarterly basis, if necessary, and
submit such proposed modification or update to such Development Plan to the
Mack-Cali Limited Partner for its Approval in the same manner as provided in
Section 5.1.3.2 with respect to budgets.  The Managing General Partner's
representatives shall meet with the Mack-Cali Limited Partner's representatives
no less frequently than monthly and at any other time reasonably requested by
the Mack-Cali Limited Partner (telephonically or in person) to discuss the
status of the Properties.  In addition, the Managing General Partner shall
provide the Mack-Cali Limited Partner with a schedule of renovation and capital
improvement meetings (which shall be held weekly) and the Mack-Cali Limited
Partner shall have the right to participate in such meetings.  The Managing
General Partner shall provide the Mack-Cali Limited Partner with a copy of any
minutes of such meetings and any materials distributed at such meetings,
promptly after such meeting.

               5.1.3.5   PERMITTED EXPENDITURES.  The Managing General Partner
shall not, without the Approval of the Mack-Cali Limited Partner, make any
expenditure of funds of the Partnership or an Investment Entity, or commit to
make any such expenditure, other than in response to an Emergency, except as
provided for in an Approved Budget (to the extent an expenditure is described in
an Approved Budget or is otherwise permitted without Approval under this
Section 5.1.3.5, it may be paid if the Partnership has sufficient available
funds, whether in reserves or otherwise, to pay such expenditure; and, except as
provided in Section 2.1.2, Funding Notices may be issued with respect thereto
only upon the Approval of the Mack-Cali Limited Partner); PROVIDED, HOWEVER, the
provisions of this Section 5.1.3 shall in no way limit a General Partner's
authority to cause the Partnership or an Investment Entity to pay (but not to
issue Funding Notices as necessary to do so unless permitted under Section
2.1.2)  Emergency expenditures or Non-Discretionary Items when due that are
billed to or incurred by the Partnership or any Investment Entity in excess of
the amounts budgeted therefor; and PROVIDED, FURTHER, that the Managing General
Partner may cause the Partnership to incur up to 110% (less any contingency
percentage already contained in the Approved Budget) of the aggregate amount
budgeted for expenditures for any period in any Approved Budget (excluding
extraordinary expenditures such as acquisition cost and tenant improvements,
Overhead Payments and contingency amounts, contained in such Approved Budget)
without the further Approval of the Partners being required.  Notice of
Emergency expenditures or actions shall be given by the General Partner making
such expenditures or


                                          35
<PAGE>

taking such actions to the other Partners as soon as practicable after such
expenditures are made or actions are taken.  The General Partners shall use
reasonable commercial efforts not to permit the Partnership or any Investment
Entity to commit waste with respect to any Property.

          5.1.4     EMPLOYEES; DUTIES OF THE MANAGING GENERAL PARTNER. 

               5.1.4.1     EMPLOYEES.  The Partnership shall have no employees
unless otherwise Approved by the Partners.  The internal compensation and
reimbursement costs incurred by the Highridge Partners with respect to any
Highridge Partners' employees or partners (or those of their Affiliates)
providing services to the partnership or the Investment Entities are intended to
be reimbursed through Overhead Payments made pursuant to Section 5.1.3.1 (and,
except as provided in Section 5.2(a), additional reimbursement to the Highridge
Partners and their Affiliates shall not be made with respect to internal
personnel and operating costs).

               5.1.4.2     MANAGING GENERAL PARTNER DUTIES.  The Managing
General Partner shall use its reasonable efforts, subject to the availability of
Partnership funds, to acquire the Investments and cause the Investment Entities
to acquire the Properties that have been Approved by the Partners for 
acquisition (limited as of the Agreement Date to the El Segundo Land and the
Summit Ridge Land), and to take the other actions that are described in
Section 1.5 and 1.11 that have been Approved by the Partners, (ii) cause the
Major Decisions and other actions that have been Approved by the Partners to be
implemented, (iii) cause proposed Development Plans and budgets to be prepared
and submitted to the Partners under Sections 5.1.3 and 5.1.4 for Approval as
required pursuant to Section 5.1.6.2, (iv) cause the Partnership to timely issue
the reports and tax returns required under this Agreement and (v) undertake its
other obligations under this Agreement.  No General Partner shall be required to
conduct the Partnership's day-to-day operations and implement Major Decisions as
such General Partner's sole and exclusive function, and any Partner and its
Affiliates may (and expect to) have other business interests and may (and expect
to) engage in other activities in addition to those relating to the Partnership,
without having or incurring any obligation to offer any interest in such
activities to the Partnership, any Investment Entity, or any Partner (or their
Affiliates).  The Managing General Partner shall be obligated to devote, and
cause its Controlling Persons to devote, as much of their business time to the
Partnership's business as shall be reasonably required to meet the Managing
General Partner's obligations hereunder, which shall be a significant portion of
such Controlling Persons' business time.

          From and after the Approval of any transaction or action with respect
to the Investments or Properties by the Partners, any General Partner shall have
the authority, without the further Approval of the Partners being required,
(a) to cause the Partnership to proceed to document the transaction with respect
to the Investments and Properties on terms that have been Approved by the
Partners in all Material respects as provided in (and to the extent required by)
Section 5.1.1.10, with such changes thereto as shall be reasonably be Approved
by the Partners, without further Approval of the Partners being required unless
such change affects the Partnership in a Material manner (as described in
Section 5.1.1.10), and (b) to cause the Partnership to execute and deliver, and
cause the Partnership to perform its


                                          36
<PAGE>

obligations under, the documents to be executed by the Partnership in connection
with such transaction (including the acquisition of Investments or Properties
pursuant to Acquisition Documents that have been Approved by the Partners),
subject to the conditions for doing so that were Approved by the Partners (to
the extent such Approval is required), the Approved Budget limitations of
Section 5.1.3.5 with respect thereto, and any restrictions on the General
Partners' authority that are contained in this Agreement and that may be
applicable from time to time. 

          5.1.5     MAJOR DECISIONS.  The following are major decisions (the
"Major Decisions") requiring the Approval (or reasonable Approval, if so
indicated) of the Partners, except as otherwise provided in this Agreement;
PROVIDED, HOWEVER, that a Partner's Approval shall not be required after such
Partner has lost its Approval rights under Section 7.9 or another provision of
this Agreement except to the extent provided in Section 5.1.6.1:

               5.1.5.1   Any act in contravention of this Agreement or extending
the term of the Partnership;

               5.1.5.2   Any act which would make it impossible to carry on the
ordinary business of the Partnership, except the liquidation of the Partnership
under the circumstances permitted in Article 8, or the sale, exchange or other
disposition of any Partnership Interest or other Investment or any other
Partnership or Investment Entity assets that has been Approved by the Partners
or otherwise is permitted under this Agreement;

               5.1.5.3   Any action which would cause the Partnership to become
an entity other than a Delaware limited partnership;

               5.1.5.4   Changing the purposes of the Partnership;

               5.1.5.5   Amending this Agreement;

               5.1.5.6   Making in-kind distributions (except as provided in
Section 8.3.8), or causing any Investment Entity to take any action with respect
to any Investment Entity asset that would be a Major Decision if such action
were taken by the Partners or the Partnership with respect to a Partnership
asset;

               5.1.5.7   Establishing or adjusting Gross Asset Value under
Section 3.10 for any contributed or distributed asset or other Revalued Property
(reasonable Approval only, subject to Sections 5.10(iii) and 8.3.8), or
Approving the terms of the tenancy-in-common agreement described in
Section 8.3.8;

               5.1.5.8   Indemnification of any Person other than a Partner or
its Affiliates pursuant to Section 5.5.2 or otherwise as permitted by this
Agreement or as Approved by the Partners;

               5.1.5.9   Except as provided in Sections 3.5.4, 3.11 and 4.3.2,
entering into any agreement (i) which would cause any Partner to become
personally liable on


                                          37
<PAGE>

or in respect of or to guarantee any indebtedness of the Partnership or
(ii) which is not nonrecourse to such Partner;

               5.1.5.10  Causing the Partnership to redeem or repurchase all or
any portion of the interest of a Partner except as provided in Section 7.9, or,
except as otherwise provided in Section 5.1.1.10, causing the Partnership to
enter into any contract in connection with the acquisition, development, leasing
or disposition of any Investment that is not in all Material respects consistent
with the description thereof contained in an Approved Development Plan or which
has not otherwise been Approved by the Partners (subject to Section 5.1.1.10,
the Approved Budget limitations of Section 5.1.3.5, and the other provisions of
this Section 5.1.5, no Approval of the Partners shall be required for any
contract under which the aggregate amount payable by the Partnership or the
Investment entities will be less than $100,000 per year, other than
acquisitions, borrowings, leases, and dispositions of assets; in each case,
except to the extent provided in Section 5.1.1.10); or to borrow money from a
Partner or its Affiliates except pursuant to Sections 2.2.2 or 2.4;

               5.1.5.11  Causing or permitting the Partnership to be merged with
any other entity; selling Partnership or Investment Entity assets for
consideration, including notes payable, or otherwise disposing of Partnership or
Investment Entity assets, including contributions to a REIT;

               5.1.5.12  Causing or permitting the Partnership to make a loan
to, or enter into any contract with, any Partner or any Affiliate of a Partner,
other than Tax Payment Loans permitted under Section 3.11, unless the terms of
such loan or contract comply in all material respects with the parameters with
respect thereto that have been Approved by the Partners or are contained in an
Approved Development Plan;

               5.1.5.13  Dissolving, terminating or liquidating the Partnership,
except as provided in Article 8 of this Agreement;

               5.1.5.14  Disposing of any Property or Investment (or any portion
thereof) or permitting an encumbrance to be placed on Partnership or Investment
Entity assets;

               5.1.5.15  Incur or pay costs related to the Partnership any
Investment or Property by or on behalf of the Partnership in excess of the
amounts permitted under Sections 2.3.1 and 5.1.3.5 except pursuant to an
Approved Budget;

               5.1.5.16  Obtain any third-party loans (including an operating
line of credit) on behalf of the Partnership or an Investment Entity, or,
execute or deliver on behalf of the Partnership any guarantee or other agreement
whereby the Partnership is or may become liable for any obligations of any other
Entity;

               5.1.5.17  Acquire any Property or Investment other than pursuant
to Approved Development Plans, or take any action on behalf of the Partnership
that is not within the scope of the Partnership purposes as set forth in
Sections 1.4 and 1.11;


                                          38
<PAGE>

               5.1.5.18  Modify, prepay or refinance any indebtedness of the
Partnership, or any Investment Entity, or select any lenders to make loans to
the Partnership or any Investment Entity;

               5.1.5.19  Make any distribution except as permitted under this
Agreement except in connection with the liquidation of the Partnership under
Article 8;

               5.1.5.20  Commence, dismiss, terminate or settle any material
litigation matter, material condemnation claim, or any other matter or claim
(including an insurance claim) in connection with any Property exceeding an
aggregate for any Partnership Accounting Year of the greater of (a) $50,000 or
(b) 1% of the acquisition and development expenditures made by the Partnership
with respect to such Property;

               5.1.5.21  Determine the terms of any participation (e.g.,
distribution and control issues) of third-party investors in the Partnership or
any Investment Entity;

               5.1.5.22  Except as otherwise provided in Article 7, admit
additional or transferee Partners to the Partnership as substituted Partners or
enter into financing that participates in profits; or, except as provided in
Article 7, permit any Transfer of any interest in the Partnership to the extent
Approval of the Partners for such Transfer is required under this Agreement;

               5.1.5.23  Confess any judgment against the Partnership or any
Investment Entity or cause the Partnership or any Investment Entity to file for
Bankruptcy or other relief from creditors;

               5.1.5.24  Establish insurance requirements for the Partnership or
settle insurance claims in excess of the dollar limit in Section 5.1.5.20;

               5.1.5.25  Establish or release reserves for use by the
Partnership except pursuant to an Approved Budget or as otherwise provided in
this Agreement (reasonable Approval only), or permitting (or requiring) any
Partner to make additional Capital Contributions to the Partnership except as
expressly provided in this Agreement or issue any Funding Notice except as
provided in Section 2.1.2.1(ii);

               5.1.5.26  Except as provided in Section 5.1.4.2, voluntarily
deviate to a Material extent (as provided in Section 5.1.1.10) from the terms of
acquisition, disposition or other course of action with respect to any
Investment or Property (whether owned by the Partnership or a proposed
acquisition) that required the Approval of the Partners (regardless of whether
contained in an Approved Development Plan), except that, to the extent actions
are permitted to be taken hereunder in connection with an Emergency or an event
of Force Majeure and are not prohibited by contracts of the Partnership
(including contracts entered into in connection with the acquisition or
disposition of Partnership Assets), a General Partner may deviate from any
course of action Approved by the Partners as necessary to respond to such
Emergency or as is necessary as the result of such event of Force Majeure,
subject to the Approved Budget Limitations of Section 5.1.3.5;


                                          39
<PAGE>

               5.1.5.27  Engage attorneys or for the Partnership or any
Investment Entity (which attorneys shall be selected upon the reasonable
Approval of the Partners).  Price Waterhouse or another national accounting firm
Approved by the Mack-Cali Limited Partner shall be the Partnership's accountants
for all purposes, and the Partners hereby Approve the following as the initial
attorneys authorized to perform services for the Partnership and the Investment
Entities:  Battle Fowler LLP; Mark Abramson, Esq.; Pircher, Nichols & Meeks;
Pryor, Cashman, Sherman & Flynn; Farer, Siegal & Fersko; Ervin, Cohen & Jessup;
and L. David Cole, Esq.;

               5.1.5.28  Approve the form of lease, tenant improvement allowance
or leasing commissions (except as provided in Section 5.1.1.10), project names
or any leasing agent for the Properties other than Highridge Partners or their
Affiliates as set forth in an Approved Development Plan or Approved Budget
(reasonable Approval only); or issue any press releases or otherwise speak with
the press concerning the terms of this Agreement (except that the Authorized
Representatives of a Partner may disclose the details of a Property acquisition,
development, financing, lease or disposition to the press after the same has
occurred or in connection with advertising a Property for lease or sale); or 

               5.1.5.29  Take any other action that is required to be Approved
by the Partners under this Agreement.

The enumeration of the foregoing rights shall not diminish or affect the
existence or exercise of other rights expressly granted to each of the Partners
under this Agreement.  In the event of a deadlock in obtaining the Approval of
the Partners with respect to any Major Decision, the deadlock shall be resolved
as provided in Sections 5.10 and 5.11.

          5.1.6     RETAINED APPROVALS; PROCEDURE FOR PARTNER REVIEW AND
APPROVAL.

               5.1.6.1   RETAINED APPROVALS.  Notwithstanding anything to the
contrary contained in this Agreement, after the loss of Approval rights by a
Partner under Section 7.9 (the "Non-Voting Partner"), the Non-Voting Partner
shall still retain Approval rights with respect to:

                         (a)   The determination of Gross Asset Value for any
     property (subject to Sections 5.10(iii) and 8.3.8);

                         (b)   Any act in contravention of this Agreement or
     extending the term of the Partnership;

                         (c)   Any action which would cause the Partnership to
     become an entity other than a Delaware limited liability Partnership;

                         (d)   Changing the purposes of the Partnership;

                         (e)   Amending this Agreement except as expressly
     provided in this Agreement (but only to the extent such amendment would
     materially and


                                          40
<PAGE>

     adversely affect the Non-Voting Partner or its Affiliates, unless such
     amendment is permitted to be made without the Non-Voting Partner's Approval
     under Section 7.9);

                         (f)   Indemnification of any Person other than a
     Partner or its Affiliates pursuant to Section 5.5.2 or except as otherwise
     permitted by this Agreement;

                         (g)   Except as provided in Sections 3.11 and 4.3.2,
     entering into any agreement (A) which would cause the Non-Voting Partner or
     its Affiliates to become personally liable on or in respect of or to
     guarantee any indebtedness of the Partnership or (B) which is not
     nonrecourse to the Non-Voting Partner and its Affiliates;

                         (h)   Causing the Partnership to redeem or repurchase
     all or any portion of the interest of a Partner except as provided in
     Section 7.9;

                         (i)   Borrow money from a Partner or its Affiliates
     except pursuant to Sections 2.2.2 or 2.4;

                         (j)   Acquire any Investment or cause any Investment
     Entity to acquire any Property, other than Investments and Properties that
     were Approved by the Partners for acquisition prior to the Non-Voting
     Partner losing its Approval rights with respect thereto under Section 7.9,
     take any action on behalf of the Partnership that is not within the scope
     of the Partnership purposes as set forth in Sections 1.5 and 1.11, or
     permit any Investment Entity to take any act that would require the
     Approval of the Non-Voting Partner under this Section 5.1.6.1 if taken by
     the Partnership;

                         (k)    Unless in compliance with the requirements of
     Section 5.2, pay any salary, fees or other compensation to, or enter into
     any contract with, any Affiliate of any Partner (but only with respect to
     contracts that do not satisfy clauses (i) and (ii) of Section 5.2) or make
     loans to any Partner other than Tax Payment Loans;

                         (l)    Prepay any Partnership indebtedness except
     (i) in connection with the disposition of any Investment or Property,
     (ii) in connection with the liquidation of the Partnership, (iii) to the
     extent such indebtedness is refinanced or (iv) in connection with
     restructuring of Partnership indebtedness; or enter into any borrowing,
     refinancing or modification of an existing borrowing other than on
     commercially reasonable terms for the reasonable needs of the Partnership's
     business; or entering into any participating financing if the Partners'
     interests are not diluted pro rata by such participation;

                         (m)     With respect to the substitution of a
     transferee or additional Partner as a Partner, except as otherwise provided
     in Section 7.9, the Non-Voting Partner shall have the right to Approve the
     admission of any new Partner (other than pursuant to Section 7.9) to the
     extent that the Non-Voting Partner's interest in the



                                          41
<PAGE>

     Partnership is diluted by the admission of the new Partner on a basis that
     is not pro rata with the dilution of the interests of all of the other
     Partners of the Partnership; and

                         (n)     Establish reserves for the Partnership, or make
     expenditures from reserves, with respect to the Partnership or any
     Investment Entity except as permitted by this Agreement, or issue any
     Funding Notice except as provided in Section 2.1.2.1(ii). 

               5.1.6.2   APPROVAL PROCEDURE.  Notice of the request for a
Partner's Approval of any matter for which such Approval is required pursuant to
this Agreement shall be delivered by the requesting Partner to each of the
Authorized Representatives of the other Partner, together with the requesting
Partner's summary and analysis of any matter for which such Approval is
requested and the requesting Partner's recommendations with respect to any
matter for which Approval is requested.  Unless some other time is specified in
this Agreement, each Authorized Representative of such other Partner shall
approve or disapprove such matter by notice to the other Partner given within
ten (10) Business Days following delivery of such notice.  Failure of any
Authorized Representative to timely respond by written notice (or orally, if
permitted under Section 1.12) to the requesting Partner, indicating Approval or
disapproval of such matter, shall be deemed withholding of the Approval by such
Authorized Representative of such matter for which Approval is requested.  From
and after any such submission to such Authorized Representative, and continuing
until the matters addressed in such submission are Approved, each such
Authorized Representative shall, upon request to the Partner who has possession
thereof, be furnished promptly with access to or, if feasible, copies of such
additional pertinent information which become available to such Partner that are
requested by the Partner whose Approval has been sought.  Notwithstanding
anything in this Agreement to the contrary, no Authorized Representative of a
Partner shall have the right to Approve any action if such Partner no longer has
Approval rights with respect to such issue under Sections 7.9 and 5.1.6.1. 
Section 1.12 sets forth each Partner's Authorized Representatives and the
actions that constitute the granting of a Partner's Approval.

     5.2  AFFILIATE TRANSACTIONS; EXCLUSIVITY; MACK-CALI  PROPERTY MANAGEMENT
OPTION.

          (a)  AFFILIATE TRANSACTIONS.  If all of the material terms thereof are
clearly identified and fully described in an Approved Development Plan or are
otherwise Approved by the Partners, any Partner or its Affiliates may provide
services, including property management services, accounting services,
construction services, legal or paralegal services (but only to the extent
permitted by law), office administration, and/or document control services, to
the Partnership and/or any Investment Entity, subject to the following
conditions: (i) the fees for such services must be no greater than the fees
charged generally by qualified, unaffiliated third-parties having comparable
expertise and performing similar services in the geographical area in which the
services are to be performed; and (ii) the other terms of the agreement pursuant
to which such services will be performed shall generally be no more onerous than
the terms of agreements used by qualified, unaffiliated third-parties having 


                                          42
<PAGE>

comparable experience performing similar services in the geographical area in
which the particular services are to be rendered. 

          (b)  EXCLUSIVITY.  Notwithstanding anything in this Agreement to the
contrary, there shall be no restriction against the acquisition or ownership by
any Partner or its Affiliates of any asset, including any office project,
regardless of whether the same is competitive with a Property owned by the
Partnership or an Investment Entity.

          (c)  MACK-CALI PROPERTY MANAGEMENT OPTION.  The Mack-Cali Limited
Partner has the option to elect to allow the Partnership to serve as the
property manager for any property in which such Partner or such Partner's
Affiliates have an interest (but which is not a Property owned by the
Partnership or any Investment Entity) pursuant to the terms of a management
agreement (the "Management Agreement") to be Approved by the Partners.  If
significant lease-up or rehabilitation services are required to be rendered by
the Partnership in connection with a property for which such election has been
made, the Highridge Partners or their Affiliates shall be entitled to receive a
lease-up and rehabilitation fee equal to 10% of the Mack-Cali Limited Partner's
(or such Affiliate's) profit from such property after it has recovered its
investment therein plus a 10% cumulative annual return thereon (compounded
quarterly), but only if such fee is Approved by the Mack-Cali Limited Partner in
connection with the election to allow the Partnership to manage such property
and the terms of such payment are set forth in the Management Agreement.

     5.3  REPORTING REQUIREMENTS; FINANCIALS; MEETINGS.

          5.3.1     GOVERNMENTAL REPORTS; MEETINGS.  The Managing General
Partner shall, at Partnership expense, use reasonable efforts to cause to be
prepared and timely filed with appropriate federal, state and foreign regulatory
and administrative bodies, all reports required to be filed with such entities
under then current applicable laws, rules and regulations, subject to the
reasonable Approval of the Partners, other than reports filed with local
government agencies in connection with the entitlement and development of a
Property (copies of which shall be furnished to the Mack-Cali Limited Partner
within a reasonable time after the Mark-Cali Limited Partner has requested a
copy thereof by notice to Highridge GP).  Such reports shall be prepared on the
accounting or reporting basis required by such regulatory bodies.  Each Partner
shall be provided with a copy of any such report.  No meeting of the Partners
shall be required unless requested by any Partner upon notice to all Partners,
which notice may be given by any Partner at any time.  All Partners shall be
given written notice of any meeting of the Partnership at least twenty (20) days
prior to any such meeting by the Partner requesting such meeting.  Any meetings
shall be held at the record-keeping office of the Partnership or at any other
reasonably convenient location within the United States as the requesting
Partner may reasonably Approve and specify in such notice.  The Partners may
adopt a course of conduct that provides for such meetings to be held
telephonically.

          5.3.2     ACCESS; AUDIT.  The Managing General Partner shall permit
any Partner to review and copy, during normal business hours at the office of
the Partnership, all Partnership financial records and information.  Each
Partner shall have the right to have such


                                          43
<PAGE>

records and information audited at Partnership expense; PROVIDED, HOWEVER, if
such audit reveals material errors or omissions in such records and information
due to a Major Default by any Partner, such Partner's Partner Group shall
reimburse the Partnership for the expense of audit.  The Managing General
Partner shall maintain (at the office of the Partnership) reports required or
otherwise prepared and delivered hereunder or under any Investment Entity
Agreement, copies of which shall be furnished to each Partner when available, at
the Partnership's expense, together with (upon request from any Partner) such
supplementary records and reports as are necessary to reflect the allocation
among the Partners of the tax items and distributions of the Partnership shown
on any reports furnished (or required to be furnished) to the Partners under
this Agreement.

          5.3.3     FINANCIAL AND STATUS REPORTS.  (a)  The Managing General
Partner shall cause the following reports to be issued at Partnership expense:

     (i)  The Managing General Partner shall use reasonable efforts to cause to
be issued to the Partners annual financial reports, in reasonable detail, which
shall be prepared and audited by the Partnership's independent certified public
accountants at Partnership expense, by February 15 the following the close of
each year (including a balance sheet and income and expense statements, both on
an Investment-by-Investment basis and on a consolidated basis, showing sources
and uses of funds, cash on hand, distributions, changes in financial position,
tax information, Undistributed Preferred Return, Invested Capital, Undistributed
Highridge Subordinated Contributions, Undistributed Highridge Subordinated
Return, and unrepaid Partner loans on a Partner-by-Partner basis).  Such
financial reports shall be prepared using GAAP, or such other method as shall be
Approved by the Mack-Cali Limited Partner from time to time upon reasonable
advance notice to the Managing General Partner; 

     (ii) The Managing General Partner shall use reasonable efforts to cause to
be issued to the Partners quarterly unaudited financial reports, in reasonable
detail, within twenty-five (25) days after the close of each calendar quarter
other than the fourth quarter of each year (commencing with the calendar quarter
ending on June 30, 1998), internally prepared by the Managing General Partner
and reviewed by the Partnership's accountants, including a balance sheet and
income and expense statements, both on an Investment-by-Investment basis and on
a consolidated basis (showing receipts on a tenant-by-tenant basis, and material
defaults, to the extent requested by the Mack-Cali Limited Partner upon
reasonable notice), sources and uses of funds, cash on hand, distributions,
changes in financial position, Undistributed Preferred Return, Invested Capital,
Undistributed Highridge Subordinated Contributions, Undistributed Highridge
Subordinated Return, and unrepaid Partner loans; 

     (iii)     The Managing General Partner shall use reasonable efforts to
cause to be issued to the Partners a monthly income and expense statement, in
reasonable detail, internally prepared by the Managing General Partner on both
an Investment-by-Investment and consolidated basis within twenty (20) days after
the close of each month (including December), showing sources and uses of
Partnership funds and changes in the Partnership's financial position during
such month.  In connection with preparing such monthly income and expense
statement, the Managing General Partner shall use commercially reasonable
efforts to review the data provided by third parties (including property
managers and accountants) that is to be


                                          44
<PAGE>

presented in such income and expense statement, such review to be commenced and
completed to the extent possible, after using commercially reasonable efforts to
do so, before the Managing General Partner furnishes such statement to the
Partners.  If such review is not completed prior to furnishing such statement,
such review shall be completed as soon as is practicable thereafter (with notice
being given to the Partners by the Managing General Partner of any variance from
such statement that is discovered by the Managing General Partner in such
review); and

     (iv) The Managing General Partner shall keep the Mack-Cali Limited Partner
reasonably apprised of pending due diligence, acquisition, construction,
leasing, marketing and disposition efforts with respect to proposed and owned
Investments and Properties within a reasonable time after any material new
development has occurred or the Mack-Cali Limited Partner requests an update;
and

          (b)  In preparing reports required under this Agreement, the Managing
General Partner may rely on information furnished by third parties (including
property managers and accountants) to the extent that it is reasonable to do so.

          (c)  Notwithstanding anything in this Agreement to the contrary, (i)
all Partnership and Investment Entity financials shall be prepared on the basis
required by the auditors for the Mack-Cali Limited Partner, and (ii) the
Partners shall make such amendments to this Agreement that reduce or eliminate
the rights (but not the obligations) of the Mack-Cali Partners, or add to or
increase the rights (but not the obligations) of the Highridge Partners, under
this Agreement as are reasonably requested by the Mack-Cali Limited Partner from
time to time in consultation with its auditors, in order to accommodate the
objectives of:  (A) the Mack-Cali Limited Partner not being required to
consolidate with the Partnership for accounting purposes and (B) the Mack-Cali
Limited Partner being able to report its share of the Partnership's income and
losses using the equity method of accounting.

     5.4  TAX MATTERS PARTNER; TAX RETURNS.  The Managing General Partner is
hereby designated as the "Tax Matters Partner", as such term is defined in
Section 6231(a)(7) of the Code, and it shall serve as such at Partnership
expense with all powers granted to a tax matters partner under the Code, except
that the Managing General Partner shall not take any action as the Tax Matters
Partner (including entering into any negotiation or settlement with any taxing
authority, or extending the statute of limitations with respect to any
Partnership item) without the reasonable Approval of the Mack-Cali Limited
Partner.  The Mack-Cali Limited Partner may elect to serve as the Tax Matters
Partner instead of the Highridge GP, effective upon notice from the Mack-Cali
Limited Partner to the Highridge GP which may be given at any time after the
Highridge GP ceases to be a General Partner or has committed a Performance
Default.  The Partners' Approval rights with respect to Approving tax decisions
(including settlements and extending the statute of limitations) are set forth
in Section 3.12.  Each Partner shall give prompt notice to each other Partner of
any and all notices it receives from the Internal Revenue Service (or any other
taxing authority) concerning the Partnership, including any notice of audit, any
notice of action with respect to a revenue agent's report, any notice of a
30-day appeal letter and any notice of a deficiency in tax concerning the
Partnership's federal, state or local income tax returns.  At Partnership
expense, the Tax Matters Partner


                                          45
<PAGE>

shall furnish each Partner with status reports regarding any negotiation between
the Internal Revenue Service (or other taxing authority) and the Partnership
promptly after any material new development, and the Mack-Cali Limited Partner
shall be given sufficient advance notice by the Managing General Partner so that
it shall have the opportunity to participate, and permit its professional tax
advisers to participate, in person in all of such negotiations.  The Tax Matters
Partner shall use its reasonable efforts to cause the Partnership's accountants
to prepare and file on a timely basis, with due regard to extensions (such
extensions to be applied for unless reasonably Approved to the contrary by the
Mack-Cali Limited Partner, all tax and information returns which the Partnership
may be required to file.  No tax or information return shall be filed without
the reasonable Approval of the Mack-Cali Limited Partner.  Drafts of the
Partnership's tax returns shall be submitted to the Mack-Cali Limited for review
and reasonable Approval at least thirty (30) days prior to the due date therefor
(determined with due regard for extensions).  The Managing General Partner shall
cause the Partnership's accountants to prepare and deliver, at Partnership
expense, to each Partner on a timely basis an information reporting return (K-1)
reflecting each Partner's distributive share of all income, gain, loss,
deductions, allowances or credits of the Partnership for each Partnership
Accounting Year, as computed pursuant to Article 3.  If there is a dispute as to
the content of the Partnership's or Investment Partnership's tax returns, such
returns shall be filed as directed by the Mack-Cali Limited Partner, with each
other Partner having the right to file an inconsistent position return with the
applicable taxing authority(ies).

     5.5  INDEMNIFICATION AND LIABILITY OF THE PARTNERS.  See Section 9.2 for
certain conventions concerning the extent to which the acts of Affiliates or
employees of a Partner or its Affiliates will not be taken into account for
purposes of this Section 5.5 in determining whether such Partner is liable (or
is not entitled to indemnification) with respect thereto.

          5.5.1     No Partner shall be liable, responsible or accountable in
damages or otherwise to any of the other Partners or to the Partnership for any
act or omission performed or omitted by it on behalf of the Partnership, except
for a Major Default, gross negligence, and damages for a breach of this
Agreement by such Partner that is not cured within the time provided in
Section 9.2, or the breach by such Partner or its Affiliates of any agreement
with the Partnership or an Investment Entity that is not cured within the time
provided in such Agreement.

          5.5.2     Except to the extent to the extent attributable to a Major
Default, gross negligence by a Partner or a Partner's Affiliates, a Partner's
breach of this Agreement that is not cured within the time provided in
Section 9.2, or the breach by such Partner or its Affiliates of any agreement
with the Partnership or an Investment Entity that is not cured within the time
provided in such Agreement, the Partnership shall indemnify and hold harmless
each Partner and its Affiliates (and their partners, shareholders, or members)
from and against any obligations, actual damages, penalties, actions, judgments,
suits, expenses, disbursements, losses, costs or liabilities of any kind or
nature whatsoever which may be imposed upon, incurred or asserted against such
Partner or its Affiliates (or their partners, shareholders, members and their
Affiliates), including reasonable attorneys' and paralegals' fees and court
costs, except to the extent the same are reimbursed to such Partner or its
Affiliates by insurance proceeds or indemnities from third parties, in
connection with, due to


                                          46
<PAGE>

or arising out of (i) such Partner's serving as a Partner (including serving as
the Managing General Partner or as a Co-General Partner of the Partnership), or
(ii) the execution and delivery by such Partner (or its Affiliates) of any
guarantee or payment or performance (including the General Partner Guaranties),
any completion agreement or guarantee, any hazardous or toxic substance
indemnity or guarantee or any other agreement Approved by the Partners (or
permitted to be entered into without such Approval) whereby such Partner or
Affiliate undertakes any monetary, performance or indemnification obligation on
behalf of the Partnership or any Investment Entity in connection with the
ownership, operation or financing of an Investment or Property.

          5.5.3     Each Partner shall indemnify and hold harmless each other
Partner and the Partnership from and against any direct (and not consequential
or incidental) obligations, actual damages, penalties, actions, judgments,
suits, expenses, disbursements, losses, costs or liabilities (collectively, the
"Liabilities") incurred or paid by such other Partner, the Partnership or an
Investment Entity, or their Affiliates (to the extent such Liabilities are not
reimbursed by insurance proceeds or indemnities from third parties), to the
extent such Liabilities are caused by such Partner's (or its Affiliate's) Major
Default, gross negligence, or breach of this Agreement that is not cured within
the time provided in Section 9.2, or the breach by such Partner or its
Affiliates of any agreement with the Partnership or an Investment Entity that is
not cured within the time provided in such agreement.  

          5.5.4     Each Partner hereby grants to each of the other Partners and
the Partnership, as security for the performance of all obligations of such
Partner pursuant to this Agreement, a security interest in and to its interest
in the Partnership, pursuant to and in accordance with the provisions of the
Uniform Commercial Code of California, and agrees in the event such Partner is
finally adjudicated to be liable to the Partnership or another Partner for any
amount and fails, within thirty (30) days thereafter to pay the amount owed, the
non-defaulting Partner(s) and the Partnership shall each have and are hereby
granted all the rights, remedies and recourse afforded a secured party under the
Uniform Commercial Code of California, including foreclosing upon the defaulting
Partner's interest in the Partnership and selling such interest at public or
private sale or retaining such interest in accordance with the Uniform
Commercial Code of California.  To evidence such security interest, each Partner
shall from time to time execute and deliver such documents as may be reasonably
requested by any other General Partner, including a financing statement (which
may be recorded or filed in accordance with applicable law) and continuation
statements.  If the Partnership interest of a defaulting Partner is foreclosed
and sold or the interest retained as aforesaid, each non-defaulting Partner is
hereby authorized on behalf of the defaulting Partner and designated the
attorney-in-fact of the defaulting Partner to execute any and all documents and
take such other action as may be required to effectuate the sale and transfer of
the defaulting Partner's Partnership interest.  Such authorization and
designation shall be deemed coupled with an interest and shall be irrevocable.

          5.5.5     In any case where indemnity is sought by a Partner, such
Partner shall give notice of the request for indemnification to the Partnership
and the other Partners from whom the indemnity is required and give them the
opportunity to the extent reasonably


                                          47
<PAGE>

possible, to participate in the defense of the claim giving rise to the claim
for indemnity, all at Partnership expense.

          5.5.6     All indemnity payments and reimbursements payable under this
Agreement to a Partner or an Affiliate of a Partner shall be treated as amounts
owed to a creditor of the Partnership, shall be paid in the ordinary course of
business, without regard to whether the Partnership has Net Available Cash, and,
shall be paid by the Partnership, PARI PASSU with other creditors of the
Partnership, in all cases prior to making distributions to Partners under
Sections 4.1 and 4.2.  No Partner shall have any liability under this Agreement
for failing to take any action under this Agreement or any agreement with the
Partnership or an Investment Entity if (i) such Partner is prohibited from
taking such action without the Approval of a Partner in the other Partner Group
under this Agreement and (ii) such Partner in the other Partner Group fails to
grant such Approval to take such action.  No Partner shall have any liability
for failing to grant any Approval permitted to be granted by it under this
Agreement.

          5.5.7     Notwithstanding anything to the contrary contained in this
Agreement, no Partner Group or its Affiliates shall receive any reimbursement
from the Partnership or another Partner for any portion of the salaries or
benefits of its Controlling Persons or the rent or utility costs of such
Partner's offices except as Approved by the other Partner Group.

     5.6  CONTROL CHANGE.  If the Managing General Partner becomes a Terminated
Partner or commits a Removal Default, the Mack-Cali Limited Partner may appoint
a Co-General Partner, and such Co-General Partner may elect to become the
Managing General Partner and to assume the Managing General Partner's authority
and responsibilities under this Agreement as provided in Section 7.9.5 (subject
to Section 5.9).  If the Managing General Partner has committed a Performance
Default with respect to an Investment or a Property, the Mack-Cali Limited
Partner shall have the rights with respect to such Investment or Property set
forth in Sections 5.10(ii) and 7.9.5 (including the appointment of a Co-General
Partner to take all actions with respect to such Investment or Property on
behalf of the Partnership, with the Managing General Partner having no further
Approval rights with respect to such Investment or Property except those set
forth in Section 5.1.6.1).

     5.7  LIMITATION OF LIABILITY.  Each Partner's liability shall be limited as
set forth in this Agreement, the Act and other applicable law.  Except as
provided in Sections 2.1.2, 2.2.2.1, 3.5.4, 3.11, 4.3.2, 5.5.1, 5.5.3 or 7.6, a
Partner will not be personally liable for any debts or losses of the Partnership
beyond the Partner's interest in the Partnership, other than distributions
received by a Partner as to which, by terms of the Act, such Partner is
obligated to return.  No partner, officer, director, shareholder or manager of a
Partner shall be liable for the obligations of such Partner to the Partnership
or the other Partners under any circumstances other than a Major Default that
has actually been committed by such partner, officer, director, shareholder or
manager or as provided in Section 3.11.

     5.8  NO PRIORITIES.  Except as specifically provided in this Agreement, no
Partner shall have any priority over any other Partner as to the return of his
or its Capital Contributions or as to distributions or allocations of Profits or
Losses or other tax items.


                                          48
<PAGE>

     5.9  DETERMINATION DATE FOR INDEMNITY PAYMENTS, REMOVAL DEFAULTS,
PERFORMANCE DEFAULTS AND MAJOR DEFAULTS; ARBITRATION.  

          5.9.1     For purposes of this Agreement, until the "Determination
Date" (defined below) has occurred, (i) no amount shall be due and owing by any
Partner to the Partnership or to another Partner pursuant to Section 3.5.4,
5.5.1 or 5.5.3, 7.6 or 9.2, and (ii) no Major Default, Performance Default or
Removal Default shall be deemed to have occurred and no Partner shall be deemed
to have become a Terminated Partner for purposes of applying Section 7.9 other
than by reason of such Partner becoming a Defaulting Partner under Section
2.2.2, in each case if there is a bona fide dispute as to whether such amount is
due or whether a Partner is a Terminated Partner (other than by reason of such
Partner becoming a Defaulting Partner under Section 2.2.2) or has committed a
Performance Default or Removal Default.  Except for the purpose of determining
that a Control Change Notice issued by the Mack Cali Limited Partner is
effective as provided below in this Section 5.9 upon an alleged Major Default,
Performance Default or Removal Default by the Managing General Partner or
because the Managing General Partner is a Terminated Partner, the "Determination
Date" shall be deemed to have occurred only upon the earlier to occur of the
following: (a) the final determination by a Court described in Section 9.4 that
an amount described in Section 3.5.4, 5.5.1, 5.5.3, 7.6 or 9.2 is due and
payable, or the Major Default, Performance Default or Removal Default in
question has occurred or a Partner has become a Terminated Partner (as the case
may be) and the expiration of the time to file a notice of appeal from such
determination has expired without such notice having been filed; or (b) the
affirmation of a determination described in preceding clause (a) by the entry of
judgment to such effect by the court to which such determination has been
appealed.

          5.9.2     Notwithstanding the provisions of this Section 5.9, if the
Mack-Cali Limited Partner alleges in good faith, by issuing a Control Change
Notice to the Managing General Partner stating that the Managing General Partner
has committed a Major Default Performance Default, or Removal Default or that
the Managing General Partner otherwise is a Terminated Partner, and the Managing
General Partner in good faith gives notice to the Mack-Cali Limited Partner
within five (5) Business Days after receiving such Control Change Notice that it
disputes whether such Major Default, Performance Default or Removal Default or
any event giving rise to Terminated Partner status has occurred, the Mack-Cali
Limited Partner may commence an expedited arbitration proceeding held in Los
Angeles, California pursuant to applicable California arbitration rules to
determine whether such Major Default, Performance Default or Removal Default or
other event giving rise to Terminated Partner status has occurred by giving
notice to the Managing General Partner appointing a qualified arbitrator and
stating that the Mack-Cali Limited Partner is invoking the arbitration
proceedings of this Section 5.9.  Within five (5) Business Days after receiving
such notice, the Managing General Partner shall, by notice to the Mack-Cali
Limited Partner, appoint a second qualified arbitrator.  If the Managing General
Partner fails timely to so appoint such second qualified arbitrator, or fails
timely to notify the Mack-Cali Limited Partner that the Managing General Partner
disputes whether such Major Default, Performance Default, Removal Event or 
event giving rise to Terminated Partner status has occurred, the Determination
Date shall be deemed to have occurred solely for the purposes set forth below in
this Section 5.9.  If the


                                          49
<PAGE>

Managing General Partner timely so appoints such second qualified arbitrator,
the two arbitrators so appointed shall appoint a third qualified arbitrator
within five (5) Business Days after the notice of the appointment of the second
arbitrator is received from the Managing General Partner by the Mack-Cali
Limited Partner.  Within five (5) Business Days after being appointed, the third
arbitrator shall (A) consider the evidence submitted by the Partners and (B)
upon notice to all Partners, determine (solely for purposes of determining
whether such Control Change Notice is valid and effective) whether the Managing
General Partner has committed a Major Default, Performance Default, or Removal
Event or event giving rise to Terminated Partner status.  If the third
arbitrator determines that the Managing General Partner has committed a Major
Default, Performance Default, or Removal Event, or that any event giving rise to
Terminated Partner status has occurred, then the Determination Date shall be
deemed to have occurred solely for purposes of determining whether such Control
Change Notice is effective and thereby enabling (i) the Co-General Partner
appointed by the Mack-Cali Limited Partner pursuant to Section 7.9.5 to become
the Managing General Partner and permanently assume the Managing General
Partner's authority and responsibility under Section 7.9.5 if a Removal Default
or any event giving rise to Terminated Partner status was held to have occurred
in the arbitration, or who may, in the case of a Performance Default that is
held in the arbitration to have occurred with respect to an Investment or
Property, take all actions with respect to such Investment or Property on behalf
of the Partnership, with the Managing General Partner having no further Approval
rights with respect to such Investment or Property except those set forth in
Section 5.1.6.1, or (ii) the Mack-Cali Limited Partner to have the rights set
forth in Section 5.10(ii).  The Determination Date shall not be deemed to have
occurred for any other purpose unless and until otherwise provided in this
Agreement.  During the period beginning on the date on which such Control Change
Notice is received by the Managing General Partner and ending with the
determination by the foregoing arbitration that the subject Major Default,
Performance Default, Removal Event, or event giving rise to Terminated Partner
status has not occurred, all actions permitted to be taken under this Agreement
by the Managing General Partner without the consent of the Mack-Cali Limited
Partner in connection with the operation of the Partnership's business (or, in
the case of a Performance Default, in connection with the Investment or Property
that is the subject of the Performance Default being arbitrated) shall, upon the
election in writing by the Mack-Cali Limited Partner made by giving notice to
the Highridge Partners (which election may specify which Approval rights it
desires and may be supplemented by notice from the Mack-Cali Limited Partner to
add or remove Approval rights specified in such notice), require the Approval of
the Mack-Cali Limited Partner (and the Managing General Partner shall be
absolved of all responsibility and liability to the Partnership and the
Mack-Cali Partners for failing to undertake all such actions for which the
Mack-Cali Limited Partner has withheld its Approval during such period).  The
costs of the arbitration shall be funded 50% by each Partner Group, and the
Partners shall bear their own attorneys fees, during the arbitration.  The
prevailing Partner Group shall be repaid all of such expenses by the
non-prevailing Partner Group within ten (10) days after receiving notice of the
third arbitrator's decision.  A "qualified arbitrator" means any Person who has
had over fifteen (15) years of experience in drafting, negotiating and/or
interpreting partnership and/or operating agreements involving the ownership and
operation of commercial real estate.


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<PAGE>

     5.10 DEADLOCK/PARTNER SALE RIGHTS.  Either Highridge GP or the Mack-Cali
Limited Partner (provided such Partner has not become a Terminated Partner or
committed a Performance Default or Removal Event) may at any time give notice to
the other (a "Deadlock Notice") if such Partner asserts that there is an
irreconcilable difference of opinion among the Partner Groups (a "Deadlock") as
to the course of action to be taken with respect to any Major Decision on which
they both have Approval rights.  The Deadlock Notice shall describe the Deadlock
and the resolution proposed by the Partner issuing the Deadlock Notice.  If a
Deadlock Notice is properly issued, the Partners shall meet in good faith during
the 30-day period after the Deadlock Notice has been received.  If the Major
Decision that is the subject of the Deadlock is not resolved within such 30-day
period, then:

               (i)  In the case of any Deadlock that occurs prior to the First
     Offer Date (defined in Section 5.11), there shall be no mechanism to
     resolve the Deadlock and arbitration or litigation shall not be used to
     resolve any such Deadlock except as provided in Section 5.10 (iii), this
     clause (i), in clauses (ii) and (iii) of this Section 5.10, or in Section
     5.4 in the case of tax returns.  In the case of a Deadlock occurring on or
     after the First Offer Date, the provisions of this clause (i), Sections
     5.10(ii) and (iii), 5.4 (tax returns) and 5.11 (the first-offer procedure)
     shall apply.  In the case of a Deadlock that occurs at any time regarding
     (A) whether a Funding Notice is permitted or required to be issued under
     Section 2.1(b), or (B) what actions should be taken with respect to the
     sale or other disposition of assets that is being made in connection with
     the liquidation of the Partnership where both the Highridge GP and the
     Mack-Cali Limited Partner have Approval rights with respect thereto, the
     dispute may be resolved through an expedited arbitration conducted in
     accordance with a procedure that is analogous to that contained in Section
     5.9.2 (with conforming changes being made to the terminology contained
     therein and with either Highridge GP or the Mack-Cali Limited Partner being
     able to invoke such arbitration proceeding by notice to the other).

               (ii)      SPECIAL RULES FOR PERFORMANCE DEFAULTS.  From and after
     the date on which a Performance Default with respect to an Investment or
     Project has been held to have occurred under Section 5.9.2 for purposes of
     issuing a Control Change Notice under Section 7.9.5, the Mack-Cali Limited
     Partner may propose to the Highridge GP that any action be taken (or not be
     taken) at any time by the Partnership or an Investment Entity with respect
     to such Investment or Project.  If Highridge GP does not agree with such
     proposal, such Deadlock shall be resolved in the manner directed and
     Approved by the Mack-Cali Limited Partner (and Highridge GP shall cause the
     Partnership and such Investment Entity promptly to take, or refrain from
     taking, as appropriate, such action in the manner so directed and Approved
     by the Mack-Cali Limited Partner).  In the case of a Performance Default,
     the Mack-Cali Limited Partner shall also have the rights set forth in
     Section 7.9.5 with respect to appointing a Co-General Partner.

               (iii)     GROSS ASSET VALUE DEADLOCKS.  In the case of a Major
     Decision described in Section 5.1.5.7 or 8.3.8, concerning the Gross Asset
     Value of any property, the dispute concerning such Major Decision shall be
     resolved in the following manner (subject to the special rules contained in
     Section 8.3.8).  Unless and


                                          51
<PAGE>

     until such Gross Asset Value has been Approved by the Partners or
     determined as provided in this paragraph (iii), the transaction giving rise
     to the determination of Gross Asset Value shall not be consummated by any
     Partner.  Either Highridge GP or the Mack-Cali Limited Partner (the
     "Invoking Partner") may give notice to the other of them (the "Other
     Partner") stating that such Partner is invoking the following procedure,
     setting forth its proposed Gross Asset Value for such property (the "GAV
     Notice"), and appointing a "qualified appraiser" (defined below).  Within
     five (5) Business Days after receiving a GAV Notice, the Other Partner
     shall, by notice to the Invoking Partner, appoint a second qualified
     appraiser.  If the Other Partner fails timely to so appoint such second
     qualified appraiser, the Gross Asset Value shall be deemed to be that set
     forth in the GAV Notice.  If the Other Partner timely so appoints such
     second qualified appraiser, the two appraisers so appointed shall appoint a
     third qualified appraiser within five (5) Business Days after the notice of
     the appointment of the second appraiser is received by the Invoking
     Partner.  Within five (5) Business Days after being appointed, the third
     appraiser shall (A) consider the evidence submitted by the such Partners
     and (B) upon notice to both of such Partners, determine such Gross Asset
     Value.  The cost of the appraisal shall be funded by the Partnership, and
     the Partner Groups shall bear their own attorneys fees, during the
     appraisal.  A "qualified appraiser" means any M.A.I. appraiser who has had
     over fifteen (15) years of experience in valuing commercial real estate in
     Los Angeles, California.

               (iv)      PARTNER SALE RIGHTS.  The Mack-Cali Limited Partner
     shall have the right to cause the Partnership to cause the sale or other
     disposition of any Property at any time if (a) a Co-General Partner has
     assumed the Managing General Partner's authority and responsibility, or the
     Mack-Cali Limited Partner or a Co-General Partner has assumed control of
     such Property, under Section 5.10(ii) or Section 7.9.5, (b) the Managing
     General Partner becomes a Terminated Partner, (c) [INTENTIONALLY OMITTED]
     or (d) the Mack-Cali Limited Partner reasonably determines prior to
     completion of such Property that development of such Property should be
     abandoned (an "Abandonment Decision").  The right to cause a sale or other
     disposition of a Property pursuant to the foregoing clauses (a) through (c)
     shall be hereinafter referred to as the "Mack-Cali Sale Right."  If the
     Mack-Cali Limited Partner becomes a Terminated Partner, the Managing
     General Partner shall have the right to cause the Partnership to sell such
     Property (or any or all Properties if the Mack-Cali Limited Partner has
     become a Terminated Partner) at any time (the "Managing General Partner
     Sale Right").  If the Co-General Partner makes an Abandonment Decision
     pursuant to this Section 5.10(iv), the Partners' obligations to fund the
     completion of such Property shall cease for any future development and the
     Partners shall separately fund and bear, without reimbursement from the
     Partnership, any Investment Partnership or any Partner or its Affiliates,
     any abandonment costs  (including any amounts that are due and payable by a
     Partner or any Affiliate of a Partner under any Managing General Partner
     Guaranty to the extent indemnification is available with respect thereto
     under Section 5.5) in the ratio of 80% by the Mack-Cali Partners and 20% by
     the Highridge Partners.


                                          52
<PAGE>

          Any Property to be sold in accordance with clause (d) of this Section
     5.10(iv) or upon a liquidation in accordance with Article 8 that does not
     occur as the result of the exercise of the Mack-Cali Sale Right or the
     Managing General Partner Sale Right shall be sold in a manner reasonably
     Approved by the Partners or, if necessary, as determined pursuant to the
     procedure described in Section 5.10(i)(B).  If the Mack-Cali Limited
     Partner has the Mack-Cali Sale Right with respect to any Property, upon
     notice to the Managing General Partner, the Mack-Cali Limited Partner shall
     have the right to cause the Partnership to sell or otherwise dispose of
     such Property as it shall Approve, including the right to cause the
     Partnership to sell or contribute such Property to a REIT (whether or not
     Controlled by  Mack-Cali Realty or its Affiliates).  Notwithstanding
     anything to the contrary contained in this Agreement, if any Property has
     achieved 95% Stabilization, the Co-General Partner shall have the right to
     cause the Partnership to sell or contribute such Property to a REIT that is
     Controlled by Mack-Cali Realty or its Affiliates.  Any sale or contribution
     of a Property by the Partnership or an Investment Entity (regardless of
     whether made pursuant to the Mack-Cali Sale Right under this Section
     5.10(iv), pursuant to Section 5.11 or any other provision of this
     Agreement) to an Affiliate of any Mack-Cali Partner or to a REIT that is
     Controlled by Mack-Cali-Realty or its Affiliate shall be made at fair
     market value as determined through the "FMV Appraisal Procedure" set forth
     herein, provided however, that if the Mack-Cali Limited Partner elects to
     contribute a Property to a REIT instead of effecting a sale of the
     Property, the Highridge Partners shall have the option to receive cash for
     their indirect interests in such Property (equal to the amount they would
     have received if the Property were sold for cash) instead of REIT stock or
     partnership interests.

          If Highridge GP does not Approve the value proposed by the Mack-Cali
     Limited Partner, the "FMV Appraisal Procedure" which shall be invoked by
     the Mack-Cali Limited Partner as a condition precedent to a transfer of a
     Property to a REIT Controlled by the Mack-Cali Limited Partner or its
     Affiliates is as follows.  The Mack-Cali Limited Partner shall give notice
     to the Managing General Partner stating that the Mack-Cali Limited Partner
     is invoking the FMV Appraisal Procedure, setting forth its proposed  fair
     market value for the Property (the "FMV Notice"), and appointing a
     "qualified appraiser" (defined below).  Within five (5) Business Days after
     receiving an FMV Notice, the Managing General Partner shall, by notice to
     the Co-General Partner, appoint a second qualified appraiser.  If the
     Managing General Partner fails timely to so appoint such second qualified
     appraiser, the fair market value shall be deemed to be that set forth in
     the FMV Notice.  If the Managing General Partner timely so appoints such
     second qualified appraiser, the two appraisers so appointed shall appoint a
     third qualified appraiser within ten (10) Business Days after the notice of
     the appointment of the second appraiser is received from Highridge GP by
     the Managing General Partner.  Within five (5) Business Days after being
     appointed, the appraisers shall (A) consider the evidence submitted by such
     Partners and (B) upon notice to both of such Partners, determine such fair
     market value.  The fair market value shall be the amount determined by the
     three appraisers, or if there is a dispute among the three appraisers as to
     value, the value established by the third appraiser shall be the fair
     market value (but the fair market value shall not exceed the highest, or be
     less than the lowest, value


                                          53
<PAGE>

     established by the other two appraisers).  The cost of the appraisal shall
     be funded by the Partnership, and the Partners shall bear their own
     attorneys fees, during the appraisal.  A "qualified appraiser" means any
     M.A.I. appraiser who has had over fifteen (15) years of experience in
     valuing commercial real estate in Los Angeles, California.

     5.11 PROPERTY DEADLOCK.   Notwithstanding the provisions of Sections 5.9
and 5.10, if (A) either Partner Group desires to sell or otherwise dispose of
any Property at any time after the expiration of thirty-six (36) months after
the completion of such Property if 95% Stabilization (as defined in Exhibit H)
has not occurred by such date and such Partner Group does not then have the
right to dispose of such Property pursuant to the Managing General Partner Sale
Right or the Mack-Cali Sale Right (as appropriate) under Section 5.10(iv), (B)
on or after the date on which 95% Stabilization of a Property has occurred,
either Partner Group desires to sell or otherwise dispose of such Property and
such Partner Group does not then have the right to dispose of such Property
pursuant to the Mack-Cali Sale Right or the Managing General Partner Sale Right
(as appropriate) under Section 5.10(iv), or (C) there is a dispute as to whether
any Major Decision (other than those described in the last sentence of Section
5.10(i)) should be Approved (or reasonably Approved) by the Partners with
respect to such Property (the events referred to in the preceding clauses (A),
(B) and (C) of this Section 5.11 are individually referred to as a "Property
Deadlock"), the resolution of such Property Deadlock shall only be made pursuant
to this Section 5.11.

               (a)    If a Property Deadlock occurs, either of the Highridge
Partners or the Mack-Cali Partners (the "Proponent Group") (provided no Partner
in such Partner Group shall be a Terminated Partner, shall have committed a
Performance Default with respect to such Property, or shall have committed a
Removal Default, and, PROVIDED, FURTHER, that no prior election to sell or
otherwise dispose of such Property shall have been made and be pending under
Section 5.10(iv) or otherwise shall have been Approved by the Partners and be
pending), may give the other Partner Group (the "Respondent Group") notice (the
"First Offer Notice") setting forth a gross value for such Property (the
"Proponent Group First Offer Price"). 


                                          54
<PAGE>

     Within ten (10) Business Days after receiving the First Offer Notice, the
Respondent Group may give notice to the Proponent Group (the "Appraisal Notice")
electing to establish the gross value of the Property by appraisal (in lieu of
using the Proponent Group First Offer Price).   In order for the Appraisal
Notice to be effective, the Appraisal Notice must both (1) appoint the first of
the three qualified appraisers who will establish the gross value of the
Property (including any reserves of the Partnership and any Investment Entity
allocable to such Property) by appraisal (the "Appraised First Offer Price"),
and (2) elect one of the following procedures:

          (i)  BUY-OUt.  If elected by the Respondent Group, the Respondent
     Group irrevocably elects to purchase the Proponent Group's interest in the
     Property for the amount the Proponent Group would receive if the Property
     were sold for the Appraised First Offer Price and the net proceeds thereof
     (after repayment of Partnership or Investment Entity debt allocable to such
     Property and after deducting reasonable reserves for contingencies for such
     Property) were paid and/or distributed by the Partnership to the Partners
     pursuant to Sections 4.1 and 4.2 ("Proponent Group Interest Purchase
     Price"); or

          (ii) NON-BINDING APPRAISAL.  If elected by the Respondent Group, the
     Proponent Group shall have the option, exercisable by notice to the
     Respondent Group given within thirty (30) days (or 60 days if the Proponent
     Group is the Highridge Group and an All-Cash Election has been made under
     Section 5.11(b)) after receiving the Appraised First Offer Price, to
     purchase the interest of the Respondent Group in such Property for the
     amount the Respondent Group would receive if the Property were sold for the
     Appraised First Offer Price and the net proceeds thereof (after repayment
     of Partnership or Investment Entity debt allocable to such Property and
     after deducting reasonable reserves for contingencies for such Property)
     were paid and/or distributed by the Partnership (the "Respondent Group
     Interest Purchase Price").  If within the foregoing 30 or 60-day period (as
     applicable), the Proponent Group does not elect to purchase the Respondent
     Group's interest in such Property pursuant to the foregoing, then, the
     Respondent Group shall have the option to elect by notice to Proponent
     Group, given within the thirty (30) day period (or 60-day period if the
     Respondent Group is the Highridge Partners and an All-Cash Election has
     been made by the Mack-Cali Partners as provided in Section 5.11(b)) after
     the expiration of such 30-day period (or 60-day period, as applicable), to
     purchase the Proponent Group's interest in such Property for the Proponent
     Group Interest Purchase Price.  If within the foregoing thirty 30 or 60-day
     period (as applicable), the Respondent Group does not elect to purchase the
     Proponent Group's interest in such Property pursuant to the foregoing, then
     the Proponent Group shall have the right to unilaterally cause the sale of
     the Property (without the Approval of any other Partner being required) for
     a price not less favorable to the Partnership than the Appraised First
     Offer Price.  The Proponent Group shall have one hundred twenty (120) days
     to close such sale (which period shall be extended to one hundred eighty
     (180) days if a binding, non-contingent, sale contract has been executed
     prior to expiration of such 120 day period).  


                                          55
<PAGE>

     If an Appraisal Notice is timely given by the Respondent Group within ten
(10) Business Days after receiving a First Offer Notice, the Proponent Group
shall, within five (5) Business Days after receiving such Appraisal Notice,
appoint a second appraiser to establish the Appraised First Offer Price as set
forth above.  If the Proponent Group does not timely appoint the second
appraiser, the value established by the first appraiser shall control.  Within
five (5) Business Days after the first appraiser receives notice of the identity
of the second appraiser, the first and second appraisers shall appoint a third
appraiser.  Within ten (10) business days after the third appraiser is
appointed, the appraisers shall issue to the Proponent Group and the Respondent
Group their determination of the Appraised First Offer Price.  In the case of a
dispute among the three appraisers as to value, the value established by the
third appraiser shall be the Appraised First Offer Price for the purpose of this
Section 5.11 (but the Appraised First Offer Price shall not exceed the highest,
or be less than the lowest, value established by the other two appraisers).  The
cost of the appraisal shall be borne 50% by the Proponent Group and 50% by the
Respondent Group.

     If an Appraisal Notice is not timely given by the Respondent Group within
the ten (10) Business Day period prescribed above, then the Respondent Group
shall have thirty (30) days (or sixty (60) days if the Highridge Partners are
the Respondent Group and an All-Cash Election has been made by the Proponent
Group) after receiving the First Offer Notice to elect, by giving notice to the
Proponent Group, to purchase the Proponent Group's interest in the Property for
the amount the Proponent Group would receive if the Property were sold for the
Proponent Group's First Offer Price and the net proceeds (after repayment of
Partnership and Investment Entity debt allocable to the Property and after
deducting reasonable reserves for contingencies for such Property) were
distributed and/or paid by the Partnership pursuant to Sections 4.1 and 4.2
("Non-Appraisal Interest Purchase Price") to the Partners and, except as
provided in Section 5.11(c) below, the Respondent Group shall have sixty (60)
days thereafter to close on the purchase of the Proponent Group's interest in
the Property.  If the Respondent Group fails to elect to purchase the interest
of the Proponent Group within the 30- or 60-day period (as applicable) after
receiving the First Offer Notice as specified above, the Proponent Group may
unilaterally cause the sale of the Property for a price not less favorable to
the Partnership than the Proponent Group's First Offer Price.  In such event,
the Proponent Group shall have one hundred twenty (120) days after the
expiration of the specified 30- to 60-day period (as applicable) to close such
sale of the Property (which period shall be extended to one hundred eighty (180)
days if a binding, non-contingent, sale contract has been executed prior to the
expiration of the foregoing 120-day period).

               (b)    The Respondent Group or Proponent Group that elects to
purchase the other Partner Group's interest in a Property following invocation
of the first-offer procedure of this Section 5.11 shall have sixty (60) days
after the election to close the purchase of such interest in such Property,
PROVIDED, HOWEVER, that if: (x) the Mack-Cali Partners are the Proponent Group
and  state in the First Offer Notice, or (y) the Mack-Cali Partners are the
Respondent Group and  state in the Appraisal Notice, that they elect not to
permit deferred payment terms for the Highridge Partners as purchaser (an
"All-Cash Election"), then the Highridge Partners shall have sixty (60) days
(instead of 30 days) after the purchase price is established for the Mack-Cali
Partners' interest in such Property to elect to purchase and ninety (90) days
thereafter to close such purchase.  If the Highridge Partners are


                                          56
<PAGE>

the purchaser of the Mack-Cali Partners' interest in a Property and the
Mack-Cali Partners did not make an All-Cash Election, the terms of the purchase
shall be as follows: 25% of the interest purchase price shall be paid in cash as
the down payment at the closing, and the balance of the purchase price shall be
payable one year after closing.  If the Mack-Cali Partners are the purchaser of
the Highridge Partners' interest in a Property, or if the Mack-Cali Partners
made an All-Cash Election, the entire purchase price for such interest shall be
paid at closing.  At closing, (i) the Partnership shall distribute the Property
to the purchasing Partner Group, (ii) the selling Partner Group shall be deemed
to have received a distribution of the Proponent Group Interest Purchase Price
or the Respondent Group Interest Purchase Price (as applicable, depending on
whether the selling Partner Group is the Proponent Group or the  Respondent
Group) under this Agreement, and (iii) the purchasing Partner Group shall be
deemed to have received a distribution of the Proponent Group First Offer Price
or the Appraised First Offer Price (as applicable), less allocable the debt, and
less the purchase price payable to the selling Partner Group.  The purchasing
Partner Group shall be obligated to pay any release price to the Partnership's
or Investment Entity's lenders as necessary to permit the purchasing Partner
Group to own the Property if the debt encumbering the Property is not assumable
by the purchasing Partner Group, PROVIDED, HOWEVER, that if (A) the Highridge
Partners purchase the Mack-Cali Partners' interests in a Property, and (B) the
Mack-Cali Partners did not make an All-Cash Election, the Mack-Cali Partners
shall lend or arrange to have lent (subject in each case to any obligation not
to breach loan covenants on their debt and that of their Affiliates) to the
Highridge Partners 75% of such release price for a one-year period on a
non-recourse basis (subject to standard recourse carve-outs for environmental
liability and wrongful acts) at a rate equal to the greater of 100 basis points
over the Prime Rate or 300 basis points over LIBOR.  If the purchasing Partner
Group wrongfully fails to close timely the purchase of the selling Partner
Group's interest in the Property, the selling Partner Group shall have as its
exclusive remedies for such failure the right to assume complete control over
the disposition of that Property (without the Approval of any other Partner
being required) and the right to purchase the breaching Partner Group's interest
in that Property (and receive a distribution of that Property in respect
thereof) for 80% of the amount that the breaching Partner Group would have
received if the Property were sold for the Proponent Group First Offer Price or
Appraised First Offer Price (as applicable), and the damage provisions of
Section 9.2 shall not apply to such breach.

          The Proponent Group Interest Purchase Price, the Respondent Group
Interest Purchase Price and the Non-Appraisal Interest Purchase Price shall be
readjusted to account for the release of any reserves for contingencies
previously reducing such amounts when such amounts become available for
distribution to the Partners.

          (c)  Notwithstanding anything in this Agreement to the contrary, by
notice to Highridge GP given by the Mack-Cali Limited Partner at any time at
least five (5) Business Days before a payment of purchase price to the Highridge
Partners is required under this Section 5.11, the Mack-Cali Limited Partner may
elect to satisfy all or any portion of its obligation to pay the purchase price
payable to the Highridge Partners under this Section 5.11 by the delivery of
shares of common stock in Mack-Cali Realty that may be sold immediately on a
national securities exchange without further registration or restriction and
that constitute marginable securities (such shares to be valued at the average
closing price per share on a


                                          57
<PAGE>

national securities exchange for the ten trading days preceding the date that is
five (5) Business Days prior to the date on which the payment in shares is being
made); PROVIDED, HOWEVER, that the Highridge Partners shall have the option,
exercisable by Highridge GP giving notice to the Mack-Cali Limited Partner prior
to the time such Mack-Cali Realty shares are issued to the Highridge Partners,
to contribute all of their interests in the Partnership to Mack-Cali Realty,
L.P. and to receive operating partnership units in Mack-Cali Realty, L.P. in
lieu of receiving such shares in Mack-Cali Realty (such operating partnership
units to be subject to the one-year holding period before conversion or
redemption that is customarily applicable to such units that are issued to
Persons contributing property in exchange therefor).


                                      ARTICLE 6

                           BOOKS, RECORDS AND BANK ACCOUNTS

     6.1  BOOKS AND RECORDS.  At Partnership expense, the Managing General
Partner shall cause to be kept (at the office of the Partnership referred to in
Section 1.3.2) accurate, just and true books of account, in which shall be
entered fully and accurately each and every transaction of the Partnership.  The
books and records of the Partnership shall separately identify, and account for,
the Partnership's investment in, and the Profits, Losses, Gain or Loss or
Disposition and distributions attributable to, each of the Investments,
Properties and each Investment Entity.  The books shall be kept in accordance
with the Partnership's method of reporting for federal income tax purposes
(which shall be the accrual method of accounting).  Tax accounting elections,
including methods of depreciation and deduction or capitalization of interest,
taxes and insurance premiums during a construction period, if any, shall be made
as the Mack-Cali Limited Partner shall reasonably Approve.  The Partnership's
financial statements shall be prepared in accordance with generally accepted
accounting principles, consistently applied.

     6.2  BANK ACCOUNTS.  The funds of the Partnership shall be deposited in the
name of the Partnership, in such bank account or accounts as the Partners shall
reasonably Approve and reasonably direct from time to time.  Such funds shall be
invested by the Managing General Partner, or by the Mack-Cali Limited Partner at
its election made by giving notice to the Managing General Partner, in such high
quality, short term instruments as shall be reasonably Approved by the Partners
(which may or may not bear interest as the Partners shall reasonably Approve). 
Each of the Managing General Partner and any Co-General Partner, unless it has
become a Terminated Partner or has committed a Removal Default, shall be
individual signatories on all Partnership accounts, with the signature of any
such Partner or its designee being sufficient to effect withdrawals.



                                          58
<PAGE>


                                      ARTICLE 7

                          TRANSFERS OF PARTNERSHIP INTERESTS

     7.1  RESTRICTIONS ON TRANSFER.  (a)  Except as hereinafter provided, no
Partner shall be permitted to Transfer all or any part of its interest in the
Partnership or permit any Transfer of ownership interests in such Partner or, in
the case of the Highridge Partners, in the partners, members or shareholders of
such Partners (or in Persons owning, directly or indirectly through tiered
entities, an interest in such Partners).  Any attempted or actual Transfer shall
be null and void AB INITIO and of no force and effect.  Notwithstanding any
other provision of this Agreement, no interest in the Partnership or ownership
interest in any Partner may be pledged or hypothecated other than to its
Affiliates without the Approval of the Partners.

          (b)  Notwithstanding the foregoing, a Partner may Transfer all or part
of its interest in the Partnership, or allow the Transfer of ownership interests
in such Partner or in direct or indirect the partners, members or shareholders
thereof, as follows:

          7.1.1     To the Partnership or another Partner or a partner, member,
shareholder or Affiliate of a Partner;

          7.1.2     If the proposed transferor is a natural Person, by
succession or testamentary disposition upon his death;

          7.1.3     If the proposed transferor is a natural Person, to a trust
for the benefit of any Family Member with respect to the proposed transferor,
but only if the proposed transferor retains Control of the interest so
transferred;

          7.1.4     Any other Transfer which is Approved by the Partners
(excluding any Partner that is a Terminated Partner or who has committed a
Removal Default); and

          7.1.5     Ownership interests in a Highridge Partner (or in the direct
or indirect partners, members or shareholders of the Highridge Partners) may be
Transferred (but not pledged or hypothecated to Persons other than Affiliates of
the Highridge Partners) without restriction if, at all times after such Transfer
of interests: (a) John S. Long, Eugene S. Rosenfeld, Steven A. Berlinger and/or
their Family Members continue to own (directly or indirectly through tiered
Entities) over 50% of the interests in capital and profits of each Highridge
Partner, and (b) John S. Long, Eugene S. Rosenfeld and/or Steven A. Berlinger
continue to have voting control (whether directly or through tiered Entities) of
each Highridge Partner with respect to Major Decisions;

          7.1.6     The interests in the Partnership of the Mack-Cali Partners,
and ownership interests in the Mack-Cali Partners, may be Transferred without
restriction to a REIT (or other Entity) Controlled by the Mack-Cali Partners or
their Affiliates or successors;


                                          59
<PAGE>

The following shall be conditions to any Transfer of any interest in the
Partnership pursuant to this Article 7: (i) the transferee shall assume in
writing each of the obligations of the transferor to the Partnership; (ii) such
transferee shall agree in writing to be bound by each of the terms and
conditions of this Agreement; (iii) the transferee shall deliver to the
Partnership instruments of assumption and security reasonably Approved by the
Partners other than the Partner Group making the Transfer, for the payment and
performance of all obligations of or attendant to the interest so transferred
and assumed; and (iv) the requirements of Sections 7.4 and 7.5 shall be
satisfied.

     7.2  NO TAG-ALONG RIGHTS.  There shall be no right of any Partner or its
Affiliates to participate in any Transfer permitted by another Partner under
this Agreement.

     7.3  BANKRUPTCY OR DISSOLUTION OF PARTNERS.  The Bankruptcy or dissolution
(without reconstitution within sixty (60) days thereafter) of any General
Partner (whether or not the Managing General Partner) shall dissolve (and
require the liquidation of) the Partnership, except as otherwise provided in
Section 8.4.  The Bankruptcy or dissolution of a Limited Partner shall not
dissolve the Partnership.  Upon the occurrence of a Bankruptcy or the
dissolution (without reconstitution within sixty (60) days thereafter) of any
Partner, such Partner shall become a Terminated Partner under Section 7.9, and
the trustee in Bankruptcy, receiver or other legal representative of the
Bankrupt Partner or other legal representatives of the dissolved Partner, shall
have all the rights of an assignee of the Partner, including the same right
(subject to the same limitations) as the Bankrupt or dissolved Partner would
have had under the provisions of Section 7.1 to assign its interest in the
Partnership, subject to the substitution rules of Section 7.4 and the provisions
of Section 7.9.

     7.4  SUBSTITUTION OF PARTNER.   Subject to the restrictions and Approval
rights of the Partners as set forth in Section 7.1 and the provisions of Section
7.5, the assignee of any Transfer by a Partner (a "Partner Assignee") shall
become a substitute Partner only if (i) the assignor Partner so provides in an
instrument of assignment, (ii) the Partner Assignee agrees in writing to be
bound by the provisions of this Agreement and of the Articles and any amendments
hereto and thereto and executes and delivers a copy of this Agreement
(appropriately modified to take account of the Transfer), and (iii) each Partner
Approves such substitution, which Approval may be given or withheld in its
reasonable discretion.  If the foregoing conditions (and the other provisions of
this Article 7) are satisfied, the Partner Assignee shall become a substitute
Partner upon payment to the Partnership of all costs and expenses of reviewing
the instrument of assignment, if appropriate, and, if required by law, an
amendment to the Certificate to reflect such substitution.  In such event, if
and as required by law, the Managing General Partner shall prepare or cause to
be prepared an amendment to the Certificate to be signed by the Managing General
Partner and, to the extent required, by the Partner Assignee. The Managing
General Partner shall attend to the due execution and filing of an amendment to
the Certificate, if such amendment is required.  Unless admitted to the
Partnership as a Partner as provided in this Agreement, no Person shall be
considered a Partner, and the Partnership, each Partner and any other Persons
having business with the Partnership need deal only with the Partners so
admitted and shall not be required to deal with any other Person by reason of an
assignment or pledge by a Partner (or realization of a pledge) or by reason of
the death of a Partner (the Partners hereby confirming that no pledge or 


                                          60
<PAGE>

hypothecation of interests in the Partnership or interests in the Partners shall
be permitted to Persons who are not Affiliates of a Partner without the Approval
of the Partners).  In the absence of the substitution of a Partner for a
deceased Partner as provided in Section 7.1(a) or this Section 7.4, any payment
to the executors, administrators or personal representatives of such deceased
Partner shall acquit the Partnership of all liability with respect to such
payment to any other Persons who may be interested in such payment by reason of
the death of such Partner.  A Partner Assignee of an interest in the Partnership
who is not admitted as a substitute Partner as provided in this Section 7.4
shall be entitled to receive the economic benefits of the interest purported to
be Transferred, but shall not be considered a Partner for any purposes and shall
have no Approval rights under this Agreement and none of the rights of a Partner
under this Agreement or under the Act.

     7.5  ADDITIONAL TRANSFER RESTRICTIONS.

          7.5.1     Notwithstanding any provision of this Agreement to the
contrary, and subject to the limitations in Sections 7.1 through 7.4, a
Partner's ability to Transfer all or any portion of its Partnership interest, or
ownership interests in such Partner, or, in the case of any Highridge Partner,
to permit the Transfer of direct or indirect (through one or more
intermediaries) ownership interests in such Partner relating specifically or
generally to such Partner's interest in the Partnership, shall be subject to the
following additional restrictions:

                    7.5.1.1   No Transfer of all or any portion of such interest
shall be effective unless (i) such Transfer complies with the Transfer
restrictions in all agreements to which the Partnership, any Investment Entity
or such Partner is a party, and (ii) such interest is registered under the
Securities Act and any applicable state securities laws, or an exemption from
registration is available, and, for any direct Transfer of an interest in the
Partnership, the Partnership shall have received an opinion of counsel,
reasonably Approved by the Partners other than the Partner making the Transfer,
to such effect (unless the requirement that the Partnership receive such legal
opinion is waived by the Approval of the Partners other than the Partner making
the Transfer);

                    7.5.1.2   No Partner shall be permitted to Transfer any
portion of its Partnership interest or take any other action which would cause
the Partnership to be (i) treated as a "publicly traded partnership" within the
meaning of Code Section 7704 or (ii) classified as a corporation (or as an
association taxable as a corporation) within the meaning of Code Section
7701(a);

                    7.5.1.3   No Partner shall be permitted to Transfer all or
any portion of its Partnership interest or to take any other action (including,
in the case of any Partner which is a corporation, limited liability company or
partnership or a partner, member or shareholder of a partnership or limited
liability company which is a Partner, a Transfer of any interest in such
partnership, limited liability or corporation or in the partners, members or
shareholders thereof) which would result in a termination of the Partnership as
a partnership within the meaning of Code Section 708(b)(1)(B) (a "Tax
Termination") unless such Partner indemnifies the other Partners against any
adverse tax consequences suffered by the Partnership as a result thereof;


                                          61
<PAGE>

                    7.5.1.4   Unless arrangements concerning withholding are
reasonably Approved by the Partners other than the Partner making the Transfer
(if such withholding is required of the Partnership), no Partner shall be
permitted to Transfer all or any portion of its interest in the Partnership to
any Person, unless such Person is a United States Person as defined in Code
Section 7701(a)(30) and is not subject to withholding of any federal tax; and

                    7.5.1.5   No Partner shall be permitted to Transfer all or
any portion of its Partnership interest if such Transfer will (i) cause the
assets of the Partnership or any Investment Entity to be deemed to be "plan
assets" under ERISA or its accompanying regulations or the Code or (ii) result
in any "prohibited transaction" under ERISA or its accompanying regulations
affecting the Partnership or any Investment Entity.

          7.5.2     Any purported transfer or any other action taken in
violation of this Section 7.5 shall be void AB INITIO.

     7.6  TRANSFER INDEMNIFICATION AND CONTRIBUTION PROVISIONS.

          Each Partner shall indemnify, defend and hold the Partnership and each
other Partner, and the shareholders, partners, employees, agents, members and
Affiliates thereof, harmless from any Liabilities in any way arising from the
failure of a Transfer of any interest in the Partnership (including any Transfer
of an interest in any partners, members or shareholders of the indemnifying
Partner, or in the direct or indirect partners, members or shareholders therein,
and regardless of whether occurring before or after the date of this Agreement)
to comply with all applicable federal and state securities laws, including all
registration or qualification requirements and anti-fraud requirements, or
arising from the impact of such Transfer upon compliance of the Partnership and
its Partners with those securities laws in connection with any previous Transfer
of an interest in the Partnership.  Should the preceding indemnity be
unenforceable to any extent, then, to such extent the Partner otherwise required
to so indemnify the Partnership and the other Partners shall be obligated to
contribute to any loss, liability, cost or expense resulting from the actions,
omissions or events set forth in the above indemnification to the extent of its
responsibility therefor, as determined by the trier of fact.

     7.7  BASIS FOR RESTRICTIONS AND REMEDIES.  The Partners acknowledge that
the relationship of each Partner to the other Partners is a personal
relationship and that the restrictions on the power of each Partner to withdraw
or Transfer its interest in the Partnership or permit the Transfer of ownership
interests in such Partner (and in indirect and direct owners of the Highridge
Partners), and the remedies of this Agreement, including Section 7.9 (and the
purchase and redemption rights contained therein), (i) are necessary to preserve
such personal relationship and safeguard the investment of the other Partners in
the Partnership, (ii) were a material inducement to the other Partners entering
into this Agreement, and (iii) shall be enforceable notwithstanding the
Bankruptcy of any Partner or its Affiliates, or any applicable prohibition
against restraints on alienation.


                                          62
<PAGE>

     7.8  REPRESENTATIONS, WARRANTIES AND COVENANTS.

          Each Partner hereby represents and warrants to each of the other
Partners as follows:

          7.8.1     Such Partner, if not a natural Person, is duly formed and
validly existing under the laws of the jurisdiction of its organization with
full power and authority to enter into this Agreement and to conduct its
business to the extent contemplated in this Agreement;

          7.8.2     This Agreement has been duly authorized, executed and
delivered by such Partner and constitutes the valid and legally binding
agreement of such Partner, enforceable in accordance with its terms against such
Partner, except as such enforceability may be limited by bankruptcy, insolvency,
moratorium and other similar laws relating to creditors' rights generally, by
general equitable principles and by any implied covenant of good faith and fair
dealing;

          7.8.3     The execution and delivery of this Agreement by such Partner
and the performance of its duties and obligations hereunder do not result in a
breach of any of the terms, conditions or provisions of, or constitute a default
under, any indenture, mortgage, deed of trust, credit agreement, note or other
evidence of indebtedness, or any lease or other agreement, or any license,
permit, franchise or certificate to which such Partner or any of its Affiliates
is a party or by which any of them are bound or to which any of their properties
are subject, or require any authorization or approval under or pursuant to any
of the foregoing, or violate any statute, regulation, law, order, writ,
injunction, judgment or decree to which such Partner is subject;

          7.8.4     Neither such Partner nor any of its Affiliates is in default
(nor has any event occurred which with notice, lapse of time, or both, would
constitute a default) in the performance of any obligation, agreement or
condition contained in any indenture, mortgage, deed of trust, credit agreement,
note or other evidence of indebtedness or any lease or other agreement, or any
license, permit, franchise or certificate, to which it is a party or by which it
is bound or to which any of its properties are subject, nor is it in violation
of any statute, regulation, law, order, writ, injunction, judgment or decree to
which it is subject; but only, in each case, if such default or violation would
materially and adversely affect such Partner's ability to carry out its
obligations under this Agreement;

          7.8.5     There is no litigation, investigation or other proceeding
pending or, to the knowledge of such Partner, threatened against such Partner or
any of its Affiliates which, if adversely determined, would materially and
adversely affect such Partner's ability to carry out its obligations under this
Agreement, and, to the knowledge of such Partner and its Affiliates, (i) there
is no lawsuit pending against such Partner or its Affiliates alleging fraud
against them and (ii) there is no criminal investigation or indictment pending
against such Partner or its Affiliates;

          7.8.6     To the knowledge of such Partner and such Partner's
Affiliates, no consent, approval or authorization of, or filing, registration or
qualification with, any court or


                                          63
<PAGE>

governmental authority on the part of such Partner is required for the execution
and delivery of this Agreement by such Partner and the performance of its
obligations and duties hereunder;

          7.8.7     Such Partner is acquiring its interest in the Partnership
for investment purposes and without a view toward its resale or distribution;

          7.8.8     Such Partner is sophisticated in real estate transactions,
has been granted access to such financial and other material information
concerning the Partnership, its purchase of the initial Investments and
Properties, the Initial Development Plan and all Due Diligence Materials with
respect to the foregoing as it has requested or may require in connection with
its investment in the Partnership, is able, either directly or through its
agents and representatives, to evaluate such information and any Due Diligence
Materials provided or made available to it from time to time hereunder, and is
able to bear the financial risk of loss presented by an investment in the
Partnership (which includes the risk of loss of such Partner's entire
investment), particularly in light of the risks that would be disclosed by a
detailed analysis of the Initial Development Plan and any Due Diligence
Materials with respect to the initial Investments or Properties (its access to
which, to the full extent such Partner has requested, hereby is confirmed by
such Partner) and the fact that the initial Investments are subject to
unpredictable real estate values, and the other risks of owning equity or debt
investments concerning real estate;

          7.8.9     Such Partner has consulted with independent counsel of its
choice and recognizes that, although Battle Fowler LLP ("BFLLP") serves as
special counsel to Affiliates of both Partner Groups on unrelated matters, BFLLP
has not represented the Highridge Partners or their Affiliates in connection
with the Partnership, is acting as the attorney for only the Mack-Cali Partners
in connection with the preparation and execution of this Agreement and the
formation of the Partnership and Investment Entities, and has not provided tax
or other legal advice to the Highridge Partners or their Affiliates in
connection therewith (the Highridge Partners and their Affiliates are relying on
Mark Abramson, Esq. as their counsel in connection therewith).  Each Partner
hereby waives all potential conflicts of interest resulting from BFLLP's
representation of Mack-Cali Partners hereunder, of the Highridge Partners (or
their Affiliates) and the Mack-Cali Partners (or their Affiliates) in unrelated
transactions, and resulting from  BFLLP's or Mark Abramson's representation of
the Partnership or any Investment Entity in the future on matters for which
BFLLP or Mark Abramson is retained as counsel by the Partnership or such
Investment Entity, PROVIDED, HOWEVER, that BFLLP shall not represent the
Partnership, any Partner, or any Partner's Affiliates in any adversarial
controversy among the Partnership, and/or any Partner or any Partner's
Affiliates (and no conflict waiver has been issued with respect to such
representation by BFLLP or by any Partner or its Affiliates in any such
controversy);

          7.8.10         Such Partner is aware that transfers of interests in
the Partnership and within such Partner are subject to the restrictions set
forth in Article 7 hereof and that an investment in the Partnership is a
long-term investment, without liquidity;

          7.8.11         Such Partner is not relying upon any of the other
Partners, nor any of their Affiliates as such Partner's agent to assess the
merits or risks of this investment, and such


                                          64
<PAGE>

Partner understands that no projection of performance shall be actionable if not
achieved except in the circumstances specifically set forth in this Agreement;

          7.8.12         None of the other Partners is acting as the
representative or agent or in any other capacity, fiduciary or otherwise, on
behalf of such Partner in connection with the Partnership, any Investment
Entity, the Investments or the other matters referred to in this Agreement;

          7.8.13         None of the other Partners nor any of the other
Partner's agents or representatives has made any binding representations,
warranties, projections or assurances to such Partner with respect to the
Partnership, the Investments, the performance of the Partnership and the
Investments, the safety or the risks involved and/or the tax or economic
consequences thereof;

          7.8.14         Such Partner is aware that the other Partner and/or the
other Partner's Affiliates now and in the future will be, and in the past have
been, engaged in businesses which are competitive with that of the Partnership
and/or the Investments, and that, no Partner or its Affiliates is required to
bring any Investments opportunities to the attention of the Partnership or any
Partner (or their Affiliates) for investment. 

          7.8.15         Such Partner is aware that compensation and
reimbursements may be payable to Affiliates of the Partners by the Partnership,
as addressed in this Agreement, including pursuant to the Approved Budget
attached as Exhibit C;

          7.8.16         Such Partner understands that the federal, state and
local tax liability of such Partner with respect to the taxable income and gain
allocated to such Partner hereunder for any year may exceed the cash
distributions from the Partnership to such Partner and, if Tax Payment Loans are
unavailable for any reason, such Partner may have to look to sources other than
distributions from the Partnership to pay such tax;

          7.8.17         Such Partner understands that it may lose its Approval
rights (and be subject to having such Partner's interest purchased by the
Partnership in certain circumstances) under Section 7.9 and the other provisions
of this Agreement if the Partner becomes a Terminated Partner or has committed a
Removal Default or Performance Default, and that it has waived its rights to a
trial by jury in any dispute concerning this Agreement or the Partnership under
Section 9.4;

          7.8.18         Except as specifically provided in this Section 7.8,
such Partner is not relying upon any representation or warranty of any other
Partner, the Partnership, any Investment Entity or any of their respective
Affiliates, express or implied, oral or written, other than those contained in
this Agreement;

          7.8.19         No Partner is required to cause the Controlling Persons
of such Partner to devote any specific portion of their time to Partnership
business other than as necessary to fulfill such Partner's obligations under
this Agreement, and such Controlling Persons are


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expected to spend substantial amounts of their time on activities that are
unrelated to the Partnership; 

          7.8.20         Such Partner understands that the Partnership and its
Partners are relying on the accuracy of the representations set forth in this
Section 7.8 (or contained elsewhere in this Agreement) in entering into this
Agreement without requiring that the interests in the Partnership be registered
under federal or state securities laws; 

          7.8.21         With respect to the El Segundo Land, the Highridge
Partners make the representations and warranties set forth on Exhibit H; and

          7.8.22         Each Partner Group represents that the ownership
interests in such Partner Group (and, in the case of the Highridge Partners, in
the direct and indirect owners thereof through all tiered Entities) is as set
forth on Exhibit E, and each of the Highridge Partners represents that the
partnership agreement or operating agreement pursuant to which each of the
Highridge Partners (and each of the direct and indirect, through one or more
intermediaries, partners or members thereof) is operated will at all times
during the term of this Agreement contain Transfer restrictions that prohibit a
violation of the Transfer restrictions contained in this Agreement.
          
     7.9  TERMINATED PARTNER; REMOVAL DEFAULTS; PERFORMANCE DEFAULTS; PURCHASE
RIGHTS; CONTROL CHANGE NOTICES.

          7.9.1     When a Partner becomes a Terminated Partner or is a Partner
in a Partner Group in which any Partner has committed a Removal Default, such
Partner shall automatically cease to have any Approval or voting rights under
this Agreement with respect to the Partnership and the Investment entities (and
each Property and Investment), except as provided in Section 5.1.6.1.  When a
Partner becomes a Terminated Partner, (i) such Partner shall cease to be a
General Partner as provided in Section 7.9.5, (ii) upon the election of the
Partner Group who is not the Terminated Partner (the "Electing Partner"), given
by notice from the Electing Partner to the Terminated Partner (a "Purchase
Notice") at any time after a Partner becomes a Terminated Partner, the
Terminated Partner shall sell the Terminated Partner's entire interest in the
Partnership to the Partnership (or to the Electing Partner Group or its designee
as set forth in Section 7.9.4), at a price (the "Buy-Out Price") to be
determined as hereinafter provided.  The Electing Partner shall notify the
Terminated Partner in writing of its election (exercisable at any time after a
Partner becomes a Terminated Partner) under this clause (ii); and (iii) the
other provisions applicable by reason of becoming a Terminated Partner
(including Sections 7.9.5 and 8.1.1) shall apply.

     If a Purchase Notice has been given under clause (ii) above, the Electing
Partner and the Terminated Partner shall attempt to agree upon the Buy-Out Price
of the Terminated Partner's entire interest in the Partnership.  If such
agreement is not reached within thirty (30) days after the notice of election is
given, the Terminated Partner, on the one hand, and the Electing Partner, on the
other hand, shall each, within ten (10) additional days, appoint an M.A.I.
accredited appraiser by notice to the other.  The two appraisers so appointed
shall, within five (5) additional days, appoint a third M.A.I. accredited
appraiser and the three


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appraisers shall meet to determine the gross proceeds which would have been
received by the Partnership if the Partnership and each Investment Entity sold,
on the Termination Date, all of their assets (other than interests in each
other) for cash at their then fair market value, less all costs and expenses of
sale, including closing costs, real estate brokerage commissions and fees, title
insurance premiums and escrow fees, appropriate reserves and legal and other
expenses incident to such sale (the "Appraised Value").  The Appraised Value
shall equal the amount determined by the three appraisers, or if there is a
dispute among the three appraisers as to value, the value established by the
third appraiser shall be the Appraised Value (but the Appraised Value shall not
exceed the highest, or be less than the lowest, value established by the other
two appraisers).  The cost of such appraisal shall be borne 50% by the Electing
Partner and 50% by the Terminated Partner.  The Buy-Out Price shall equal
(i) the amount the Terminated Partner would receive under Sections 4.1 and 4.2
if all of the assets of the Partnership and each Investment Entity (other than
interests in each other) were sold to a third party for the Appraised Value and
the Partnership were liquidated, after paying creditors and withholding
therefrom any amounts payable by the Terminated Partner under Sections 4.3.2,
5.5.3 and 9.2 and the other provisions of this Agreement, minus (ii) in the case
of a Major Default, 10% of the Buy-Out Price (determined before adjustment
thereof under this clause (ii)).  If the Partnership redeems the Terminated
Partner, there shall be no discount in the Buy-Out Price for any encumbrances to
which such redeemed interest is subject, but the Partnership shall apply the
proceeds of such redemption to satisfy such encumbrances instead of making
distributions thereof to the Terminated Partner to the extent required by law
(such distributions being deemed for all purposes to have been made to the
Terminated Partner by the Partnership and then paid by the Terminated Partner to
satisfy such encumbrances).  If the interest of the Terminated Partner is
purchased by the Electing Partner (or its designee), and not by the Partnership,
pursuant to Section 7.9.4, the Buy-Out Price for the Terminated Partner's
interest as determined above shall be reduced to the extent the Electing Partner
or its designee acquires the Terminated Partner's interest subject to (or
assumes) the encumbrances on such interest at the closing.  Within ten (10) days
following the determination of the Buy-Out Price, the Electing Partner may
elect, in its sole and absolute discretion, by notice to the Terminated Partner,
to rescind any notice pursuant to this Section 7.9.1, in which event the right
to elect to cause the Terminated Partner to sell its interest to the Partnership
or to the other Partner (or its designee) pursuant to this Section 7.9.1 as a
result of the event(s) which led to the Purchase Notice (but not any future
event which would authorize any such notice) shall no longer be of any force or
effect.

          7.9.2     The purchase and sale of the Terminated Partner's interest
in the Partnership pursuant to this Section 7.9 shall be consummated on or
before the thirtieth (30th) day following the date upon which the Buy-Out Price
was determined (whether by agreement of the Terminated Partner and the Electing
Partner or by appraisal), at the offices of the Partnership, or at such other
time and place as may be agreed upon by the Terminated Partner and the Electing
Partner.  At the closing of such purchase and sale (the "Closing Date"), the
Terminated Partner shall execute and deliver to the Partnership (or the Electing
Partner or its designee, as appropriate) such instruments of assignment,
conveyance and transfer as the Electing Partner may reasonably deem necessary or
appropriate to consummate the purchase and sale, and the purchaser shall pay
cash to the Terminated Partner in the amount of the Buy-Out Price (adjusted for
encumbrances to the extent provided in Section 7.9.1).


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<PAGE>

          7.9.3     Following the Closing Date, (a) the Partnership shall
indemnify and hold the Terminated Partner harmless from and against all
liabilities of the Partnership arising from acts taken or omitted to be taken by
the Partnership after the date of the closing of the sale of the Terminated
Partner's interest to the Partnership (or to the Electing Partner or its
designee, as appropriate), and (b) the indemnity and liability provisions of
Sections 3.5.4 and 5.5 shall continue to apply with respect to the Terminated
Partner and its Affiliates. 

          7.9.4     The Partnership shall fund the purchase of the Terminated
Partner's interest pursuant to this Section 7.9 by borrowings or, if the
remaining Partner so Approves, by additional Capital Contributions from the
Electing Partner, such borrowings or Capital Contributions to occur when needed
to make the required payment of the Buy-Out Price.  If the Electing Partner so
Approves, the interest of the Terminated Partner shall be purchased by the
Electing Partner (or its designee, which designee shall be admitted as a Partner
hereunder simultaneously with the closing of such purchase of the Terminated
Partner's interest in order to avoid a termination of the Partnership, if the
remaining Partner so elects by giving notice thereof to the Terminated Partner
prior to such closing).

          7.9.5     (a)  The Mack-Cali Limited Partner shall have the right to
appoint a Co-General Partner by notice to the Highridge Partners at any time
after it has issued (or simultaneously with its issuance of) a Control Change
Notice to the Highridge Partners under this Section  7.9.5, and such Co-General
Partner shall automatically be admitted as a general partner of the Partnership
under the Act, and become a General Partner of the Partnership under this
Agreement, upon the Co-General Partner and each other Mack-Cali Partner
executing and delivering to all of the Partners an amendment to this Agreement
pursuant to which the Co-General Partner agrees to be bound by the terms of this
Agreement (such amendment need not be executed or Approved by any Highridge
Partner in order to be valid).  The interest in the Partnership granted to any
Co-General Partner shall be as specified by notice to the Highridge Partners
from the Mack-Cali Limited Partner and shall reduce the interest in the
Partnership of the Mack-Cali Limited Partner accordingly.  Any Co-General
Partner shall be an Affiliate of the Mack-Cali Limited Partner.  

          At any time after the Managing General Partner has been deemed to be a
Terminated Partner or to have committed a Removal Default under Section 5.9, the
Mack-Cali Limited Partner may elect, effective immediately upon the Mack-Cali
Limited Partner giving notice to the Highridge Partners, that the Co-General
Partner shall become the Managing General Partner and shall assume the Managing
General Partner's authority and responsibility in connection with the operation
of the Partnership (but the Managing General Partner shall retain Approval
rights to the extent set forth in Section 5.1.6.1).  Such assumption shall be
effective, the Managing General Partner shall cease to be the Managing General
Partner and shall have its entire interest reconstituted from a General
Partner's interest to that of a Limited Partner having equivalent distribution
and tax allocation rights to that previously held by it as a General Partner,
the Co-General Partner shall become the Managing General Partner, and the
Partnership shall be reconstituted and continued and shall not dissolve, upon
the later to occur of (i) five (5) Business Days after the receipt by the
Managing General Partner of such notice from the Mack-Cali Limited Partner that
it has elected such assumption by the Co-



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General Partner pursuant to this Section 7.9.5 (together with any notice
described in Section 7.9.5(b), a "Control Change Notice"), or (ii) if the
Managing General Partner in good faith denies the assertion that it is a
Terminated Partner or that it has committed a Removal Default by giving notice
of such denial to the Mack-Cali Limited Partner within five (5) Business Days
after receipt by the Managing General Partner of a Control Change Notice, the
Determination Date for purposes of this Section 7.9.5, as determined pursuant to
the procedure described in Section 5.9.  Notwithstanding anything to the
contrary contained in this Agreement, the Co-General Partner shall have the
right to cause the Partnership to borrow money at any time pursuant to any loan
agreement (and/or other documents entered into by the Managing General Partner
and/or its Affiliates in connection with such agreement) that has been Approved
by the Managing General Partner prior to the Managing General Partner becoming a
Terminated Partner or being deemed to have committed a Removal Default under
this Agreement, even if under such agreement (and/or such other documents), the
Managing General Partner and/or its Affiliates would have personal liability
with respect to the repayment of such borrowings (but the indemnity provisions
of Article 5 shall continue to apply with respect to the Highridge Partners and
any such borrowing).

                    (b)  If the Managing General Partner is deemed to have
committed a Performance Default with respect to a Property or Investment under
Section 5.9, and the Mack-Cali Limited Partner has appointed a Co-General
Partner as provided in this Section 7.9.5, such Co-General Partner shall be
entitled to assume complete control over the construction, stabilization,
operation and disposition of such Property or Investment.  If the Mack-Cali
Limited Partner has not appointed a Co-General Partner, the Mack-Cali Limited
Partner shall nonetheless have the rights set forth in Section 5.10(ii) with
respect to such Property or Investment.  The Mack-Cali Limited Partner may give
notice to the Managing General Partner at any time after it in good faith
believes that the Managing General Partner has committed a Performance Default
stating that it believes that such Performance Default has occurred (such notice
shall constitute a "Control Change Notice" for purposes of this Agreement).  The
change in control described in this Section 7.9.5(b) (and the rights of the
Mack-Cali Limited Partner under Section 5.10(ii) to control certain actions and
decisions) shall be effective upon the later to occur of (i) five (5) Business
Days after the receipt by the Managing General Partner of the Control Change
Notice with respect to such Performance Default, or (ii) if the Managing General
Partner in good faith denies the assertion that it has committed a Performance
Default by giving notice of such denial to the Mack-Cali Limited Partner within
five (5) Business Days after receipt by it of a Control Change Notice, the
Determination Date for purposes of this Section 7.9.5, as determined pursuant to
the procedure described in Section 5.9.

          7.9.6     The Partners have agreed to the remedies contained in this
Section 7.9 for the reasons set forth in Section 7.7.


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<PAGE>

                                      ARTICLE 8

                          TERM, DISSOLUTION AND TERMINATION

     8.1  EVENTS OF DISSOLUTION.  The Partnership shall continue until DECEMBER
31, 2005, or such later date as is Approved by the Partners; PROVIDED, HOWEVER,
that dissolution and liquidation shall occur prior to that date upon the
occurrence of any one of the following events:

          8.1.1     An election to dissolve the Partnership being made in
writing by the Approval of the Partners other than any Terminated Partner or
Partner who has committed a Removal Default;

          8.1.2     The sale for cash, exchange or other disposition of all or
substantially all of the assets of the Partnership and each Investment Entity;

          8.1.3     The Bankruptcy or dissolution (without reconstitution within
sixty (60) days thereafter) of any General Partner, unless the Partnership is
reconstituted and continued as provided in Section 8.4; or

          8.1.4     Any other event resulting in the dissolution or liquidation
of the Partnership that is expressly described in this Agreement.

     8.2  LIMITATION ON DISSOLUTION.  Until the dissolution of the Partnership
otherwise occurs, no Partner shall voluntarily retire, resign or withdraw from
the Partnership, take any step voluntarily to dissolve itself or voluntarily
cause a dissolution of the Partnership, except as provided in this Agreement
(including Section 8.1).

     8.3  LIQUIDATION AND WINDING UP.

          8.3.1     If the Partnership is dissolved for any reason and is not
reconstituted pursuant to Section 8.4.1, each of the Mack-Cali Limited Partner
and the Managing General Partner, unless such Partner is a Terminated Partner or
has committed a Removal Default (collectively, the "Liquidator") shall commence
to wind up the affairs of the Partnership, to liquidate and sell the Properties
and to liquidate the Investment Entities in an orderly manner as reasonably
Approved by the Partners (subject to Section 5.10(i)) as soon as is practicable
thereafter.  A third-party liquidator may be appointed if Approved by the
Partners.  Any Liquidator other than the Partners shall have sufficient business
expertise and competence to conduct the winding up and termination of the
business of the Partnership.  No Liquidator who is a Partner shall be paid any
compensation or fee for conducting the liquidation of the Partnership or any
Investment Entity.  Notwithstanding anything to the contrary contained in this
Agreement, if one Partner Group has the unilateral right (without the Approval
of the other Partner Group) to cause the sale or other disposition of a Property
or Investment under any provision of this Agreement, such Partner Group shall be
the Liquidator with respect to such Property or Investment and may sell or
otherwise dispose of such Property or Investment on such terms as shall be
Approved by such Partner Group (whether during the term of the


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Partnership or in liquidation), subject, however, to the restrictions on
transfers of such Property or Investment to Affiliates of such Partner Group
that are contained in this Agreement (including Section 5.11).

          8.3.2     The Liquidator shall proceed with such liquidation in as
expeditious a manner as is reasonably practicable.  The holders of interests in
the Partnership shall continue to share income and losses during the period of
liquidation in accordance with Article 4.

          8.3.3     If a Partner or an Affiliate of a Partner desires to
purchase any of the Partnership's remaining assets, the price, terms and
conditions of such purchase shall be subject to the Approval of the Partners and
the restrictions described in this Agreement (including Section 5.11) on
transactions with Affiliates.

          8.3.4     Except as expressly provided in this Article 8, any
Liquidator which is not a Partner shall have and may exercise all of the powers
conferred upon the Managing General Partner under the terms of this Agreement
(but subject to all of the applicable limitations, contractual and otherwise,
upon the exercise of such powers), to the extent necessary or desirable in the
good faith judgment of the Liquidator to carry out the duties and functions of
the Liquidator hereunder for and during the Liquidation Period.

          8.3.5     If (i) the Partnership is dissolved for any reason and is
not reconstituted and continued pursuant to Section 8.4.1, (ii) all General
Partners have become Bankrupt or been dissolved, and (iii) within ninety (90)
days following the date of dissolution a Liquidator or successor Liquidator has
not been appointed by the remaining Partners pursuant to Section 8.3.1, any
interested party shall have the right to seek judicial supervision of the
winding up of the Partnership pursuant to the Act.

          8.3.6     After making payment or provision for payment of all debts
and liabilities of the Partnership and all expenses of liquidation, the
Liquidator shall establish, for a period not to exceed twelve (12) months after
the date the liquidation is complete, such cash reserves as are reasonably
necessary for any foreseeable, contingent or unforeseen liabilities or
obligations of the Partnership, the Investment Entities or the Partners or their
Affiliates with respect to the Partnership obligations.

          8.3.7     After the liquidation of the Partnership or the acquisition
of an Investment or Property from the Partnership by a Partner Group, the
Partners and/or their Affiliates may employ Persons who previously were employed
by the Partnership or an Investment Entity, PROVIDED, HOWEVER, that neither the
Mack-Cali Partners nor the Highridge Partners may engage the services of any
Partnership or Investment Entity employee (other than any on-site employee of a
Property in which all of the interests of the Partners have been acquired by one
Partner Group if such employee has no responsibilities with respect to any other
Property owned by the Partnership or an Investment Entity, E.G., a day porter)
except upon six months' prior notice to the other (whether within the first
twelve (12) months after the liquidation of the Partnership or otherwise), and
no employee of the Partnership shall render services simultaneously to the
Partnership or an Investment Entity and to any Partner or its Affiliates without
the Approval of both the Mack-Cali Partners and the Highridge Partners.


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<PAGE>

          8.3.8     This Section 8.3.8 shall apply if Partnership assets or
Investment Entity assets are sold for consideration that includes notes payable
to the Partnership (or payable to an Investment Entity) or interests in a REIT,
and the provisions of this Section 8.3.8 shall apply notwithstanding any other
provision of this Agreement.

          (a)  To the extent such consideration includes notes payable, such
notes payable shall, upon receipt by the Partnership or any Investment Entity,
be distributed in-kind to the Partners.  The Gross Asset Value of such notes at
the time of such distribution shall be the principal amount payable under such
notes if held to maturity.  Each Partner shall have an undivided interest in
such notes equal to the percentage obtained by multiplying the Gross Asset Value
of such notes by a fraction whose numerator equals the amount such Partner would
receive under Sections 4.1 and 4.2 if cash equal to such Gross Asset Value were
paid to the Partner pursuant to such Sections as loan repayments or
distributions instead of such notes, and whose denominator equals such Gross
Asset Value.  The Partner shall own such notes pursuant to a tenancy-in-common
agreement to be reasonably Approved by the Partners at the time of such
disposition (such tenancy-in-common agreement shall be prepared at Partnership
expense).

          (b)  To the extent such consideration consists of interests in a REIT,
such interests shall, upon receipt by the Partnership or any Investment Entity,
be distributed in-kind to the Partners except as otherwise set forth below in
Section 8.3.8(c).  The Gross Asset Value of such interests at the time of such
distribution ("REIT Share Value") shall be:

                    (i)  in the case of publicly traded stock, the share
     price at the time of such receipt by the Partnership multiplied by the
     number of shares of stock received by the Partnership;

                    (ii) in the case of interests that are convertible into
     publicly traded stock, the share price (at the time of the receipt by
     the Partnership of such interests) of such publicly traded stock
     multiplied by the number of shares of such stock into which such
     interests are convertible;

                    (iii)     in the case of interests that are neither
     publicly traded nor convertible into publicly traded stock, the value
     of the property of the Partnership or Investment Entity disposed of to
     the REIT as set forth in the documents pursuant to which such
     disposition was made to the REIT (or if no such value is set forth in
     such documents, the fair market value of such property determined
     under Section 5.10(iii), such determination to be made without regard
     to any restrictions to which such interests are subject or any
     minority or liquidity discount with respect thereto).

Each Partner shall receive a distribution of such portion of the interests in
the REIT equal to the percentage obtained by multiplying the aggregate REIT
Share Value of all interests in the REIT that are received by the Partnership or
Investment Entity by a fraction (A) whose numerator equals the amount such
Partner would receive under Sections 4.1 and 4.2 if cash


                                          72
<PAGE>

equal to such aggregate REIT Share Value were paid to the Partners pursuant to
such Sections as loan repayments or distributions instead of such interests in
the REIT, and (B) whose denominator equals such aggregate REIT Share Value.

          (c)  Notwithstanding the provisions of Section 8.3.8(b), distributions
of interests in a REIT shall not be required (unless otherwise Approved by the
General Partners) for so long as such distribution is prohibited by the
documents pursuant to which such interests were received (the Partners
conducting the transaction with the REIT shall make reasonable, good faith
attempts to avoid such a prohibition).  If the interests in the REIT are not
distributed to the Partners at the time of their receipt by reason of the
operation of this Section 8.3.8(c), (I) such interests shall nevertheless be
deemed to have been distributed to the Partners, for all purposes of this
Agreement, at the time of their receipt by the Partnership or Investment Entity
in proportion to the percentage thereof that each Partner would receive if such
interests were distributed at the time receipt under Section 8.3.8(b), and (II)
upon the ultimate distribution of such interests in the REIT or the proceeds
from the sale or other disposition thereof by the Partnership, each Partner
shall receive the percentage thereof determined pursuant to clause (I) of this
Section 8.3.8(c) (regardless of the value of such interests at the time of such
ultimate distribution or the amount of the proceeds from the sale or other
disposition thereof).

          (d)  The Partners conducting the transaction with the REIT shall use
reasonable good faith efforts to structure any disposition of Partnership or
Investment Entity assets for notes or interests in a REIT in a manner that will
facilitate compliance with this Section 8.3.8.

     8.4  RECONSTITUTION AFTER BANKRUPTCY OR DISSOLUTION OF A GENERAL PARTNER.

          8.4.1     Upon the Bankruptcy or dissolution (without reconstitution
within sixty (60) days thereafter) of any of the General Partners, the
Partnership shall be dissolved and liquidated unless within ninety (90) days
subsequent to such event the remaining Partners (other than Partners in the same
Partner Group as the Bankrupt General Partner) so elect, by giving notice to all
Partners, to reconstitute the Partnership and to continue the business of the
Partnership.  If such election is made, then (i) the Partnership shall not be
dissolved and liquidated; (ii) the Partnership and the business of the
Partnership may be reconstituted and continued, under and pursuant to the
provisions of this Agreement; (iii) the Terminated Partner's interest in the
Partnership may be purchased as set forth in Section 7.9, and upon such
Bankruptcy or dissolution, the other rights against a Terminated Partner under
Section 7.9 shall also apply to the extent applicable; and (iv) the Certificate
shall be amended to reflect such continuation.

     8.5  DISTRIBUTION UPON DISSOLUTION AND CAPITAL ACCOUNT ADJUSTMENTS.   Upon
dissolution of the Partnership without reconstitution as permitted by this
Article 8, the Partnership's assets shall be sold or otherwise disposed of to
third parties as directed by the Liquidator (subject to Sections 5.10, 5.11 and
8.3.8), and, after paying or providing for liabilities owing to creditors and
the establishment of such reserves as are reasonably necessary for foreseeable,
contingent or unforeseen liabilities or obligations of the Partnership, the
Investment Entities, or the Partners or their Affiliates with respect to
Partnership or


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<PAGE>

Investment Entity obligations for a period of up to twelve (12) months after the
liquidation has been completed, the remaining liquidation proceeds (and the
reserves, after the expiration of a reasonable period of time of up to twelve
(12) months after the liquidation has been completed) shall be distributed
pursuant to Section 4.2 (subject to Section 8.3.8).

     8.6  COMPLIANCE WITH TIMING REQUIREMENTS OF TREASURY REGULATIONS. 
Notwithstanding anything in this Article 8 to the contrary, in the event the
Partnership is "liquidated" within the meaning of Regulations Section
1.704-1(b)(2)(ii)(g), distributions shall be made to the Partners within the
time required by Regulations Section 1.704-1(b)(2)(ii)(b)(2) to the extent
practicable.  However, a liquidation occurring as a result of a Tax Termination
shall be treated as provided in Regulations Section 1.708-1(b)(1)(iv), or
otherwise as required by successor Regulations, if any.


                                      ARTICLE 9

                                    MISCELLANEOUS

     9.1  OTHER INTERESTS.  No Partner and no Affiliate of a Partner shall have
any right, by virtue of this Agreement or otherwise, to share or participate in
or to Approve any other investments or activities of any other Partner or the
income or proceeds derived therefrom.  No Partner and no Affiliate of any
Partner shall be obligated to offer or to bring to the attention of the
Partnership, any other Partner or its Affiliates, any property or other business
investment or opportunity, whether or not within the scope of the Partnership's
purposes, and any Partner and any Affiliate of any Partner may at any time
during the term of the Partnership own, invest in, develop or manage, directly
or indirectly, any property or other business investment or opportunity, whether
or not competitive with the Partnership, any Investment Entity, the Properties,
the Investments or the Partnership's or any Investment Entity's other assets,
and whether or not within the scope of the Partnership purposes.  Each of the
Partners acknowledges and agrees that each Partner and its Affiliates have
engaged or invested in, are now engaged and investing in and will in the future
be offered, consider, engage and/or invest in other business or real property
ventures of every kind and nature, including the ownership, acquisition,
financing, leasing, operating, management, syndication, brokerage and
development of real property and other investments and opportunities to make or
purchase loans which are competitive with the Properties and/or the Investments
and the business of the Partnership and the Investment Entities, and none of the
Partners or their Affiliates shall have any obligation or responsibility to
disclose, account for or offer any of such real properties, investments or
opportunities to the Partnership or any Partner or their Affiliates, and the
Partnership, the Partners and their Affiliates shall have no rights or interests
therein. 


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<PAGE>

     9.2  DAMAGES; CERTAIN CURE RIGHTS; OFFSET.  Each Partner shall be liable to
the Partnership and the other Partners for any actual (but not consequential or
incidental) damages arising from any breach of this Agreement.  Except as
provided in Sections 2.1.2, 2.2.2.1, 3.5.4, 3.11, 4.3.2, 5.5.1, 5.5.3 or 7.6,
the liability of any Partner shall be limited to such Partner's interest in the
Partnership.  Upon any alleged breach or default of this Agreement by any
Partner, it shall be a condition to any action against such Partner that such
Partner shall have received notice of such alleged breach or default (which may
be any notice otherwise required by this Agreement) and that such Partner shall
have failed to completely (at its expense, without right of reimbursement from
the Partnership or the other Partners) cure or commence to completely cure such
alleged breach or default within thirty (30) days following such notice and
failed, at all times thereafter, to use diligent efforts to pursue such cure to
completion, but in no event beyond ninety (90) days.  Notwithstanding anything
in this Agreement to the contrary, (a) there shall be no cure period for a Major
Default, and (b) the only cure period for failure timely to make a Capital
Contribution under Article 2 is set forth in Sections 2.2.1 and 2.2.2. 
Notwithstanding anything in this Agreement to the contrary, all amounts payable
to a Partner under this Agreement or to a Partner or an Affiliate of a Partner
under any agreement with the Partnership or an Investment Entity shall be
subject to offset for amounts owed to the Partnership or the other Partners and
their Affiliates by such Partner or its Affiliates under this Agreement or such
agreement with such Affiliate and shall be withheld and either retained by the
Partnership or reallocated to the other Partners in a reasonable manner, as the
case may be.  If a Partner breaches this Agreement and fails to cure such breach
within the time required by this Section 9.2, the Partners of the other Partner
Group may take such actions (or cause the Partnership or any Investment Entity
to take such actions) as are reasonably necessary to cure such breach at the
breaching Partner's expense.  If the Partners have established a course of
conduct of granting Approvals orally as provided in Section 1.12, no Partner
will be liable for any breach of this Agreement (regardless of whether such
breach is capable of being cured) if such Partner reasonably and in good faith
believed that such action was consented to orally by the other Partner Group;
PROVIDED, HOWEVER, that the foregoing shall not apply with respect to the
Approvals described in the last sentence of Section 1.12.  Notwithstanding
anything in this Agreement to the contrary, (i) no Highridge Partner shall be
liable for any mistakes made by it in implementing the Development Plan for any
Property that are made in good faith and do not constitute gross negligence,
actual fraud or intentional misappropriation of funds and (ii) for purposes of
applying Section 5.5 and this Section 9.2, a Highridge Partner shall not be
liable for (or be ineligible to receive indemnification under Section 5.5 by
reason of) the acts of any Affiliate of the Highridge Partners or of any
employee of any Highridge Partner or their Affiliates, or be liable for (or be
ineligible to receive indemnification under Section 5.5 by reason of) the acts
of any Affiliate of any Highridge Partner, except to the extent that the act of
such employee or Affiliate in question (A) occurred as a result of the failure
of a Highridge Partner to conduct the employee and Affiliate supervision
procedures to the extent required under Exhibit J or (B) occurred with the prior
actual and specific knowledge of John S. Long, Eugene S. Rosenfeld or Steven A.
Berlinger.
 
     9.3  NO AGENCY.  Except as provided herein, nothing herein contained shall
be construed to constitute any Partner hereof the agent of any other Partner
hereof or to limit in any manner the carrying on of each Partner's respective
businesses or activities.


                                          75
<PAGE>

     9.4  GOVERNING LAW.  It is the intent of the parties hereto that all
questions with respect to the construction of this Agreement and the rights and
liabilities of the parties hereto shall be determined in accordance with the
provisions of the laws of the State of Delaware as applicable to a limited
partnership formed under the Act.  The United States District Court for the
Central District of California, the Superior Court for Los Angeles County,
California and the United States District Court for the Eastern District of New
York shall be the exclusive appropriate venues to litigate questions of
interpretation under this Agreement or the rights of the parties hereunder. 
Each of the parties hereto hereby waives any and all rights to a trial by jury
with respect to any dispute among the Partners or their Affiliates or among a
Partner (or its Affiliates) and the Partnership concerning this Agreement, the
Partnership, any Investment Entity or any Investment or Property.  In any
dispute among the Partners concerning the Partnership or this Agreement, the
prevailing Partner(s) shall be entitled to recover its reasonable attorneys'
fees and costs (including litigation and collection costs) from the
non-prevailing Partner(s).

     9.5  NOTICES.  Any notices or solicitations of Approval required or
permitted to be given under the terms of this Agreement shall be in writing and
shall be deemed to have been given when (i) personally delivered with signed
delivery receipt obtained, (ii) when transmitted by facsimile machine, if
followed by a mailing thereof pursuant to this Section 9.5 before the end of the
first business day thereafter, with printed confirmation of successful
transmission to the facsimile number set forth in the appropriate address listed
below being obtained by the sender from the sender's facsimile machine or
telephonically from the addressee, or (iii) when deposited in the United States
first class mail if sent postage prepaid by registered or certified mail, return
receipt requested, in each case addressed as follows: 

          IF TO ANY OF THE MACK-CALI PARTNERS, to it in care of:

                    Mr. Mitchell E. Hersh
                    Roger W. Thomas, Esq.
                    Mack-Cali Realty Corporation
                    11 Commerce Drive
                    Cranford, New Jersey  07016
                    Phone:  (908) 272-8000
                    Fax:  (908) 272-0214
     
               with a copy to:

                    Battle Fowler LLP
                    1999 Avenue of the Stars, Suite 2700
                    Los Angeles, California  90067
                    Attn:  Sanford C. Presant, Esq.
                    Phone:  (310) 277-6625
                    Fax:  (310) 277-6627


                                          76
<PAGE>

          IF TO ANY OF THE HIGHRIDGE PARTNERS, to it in care of:

                    Mr. John Long
                    Mr. Gene Rosenfeld
                    Mr. Steven Berlinger
                    c/o Highridge Partners, Inc.
                    300 Continental Boulevard, Suite 360
                    El Segundo, California  90245
                    Phone:  (310) 648-7600
                    Fax:  (310) 648-7619
                    
          with a copy to:

                    Mark Abramson, Esq.
                    300 Continental Boulevard, Suite 360
                    El Segundo, California  90245
                    Phone:  (310) 648-7600
                    Fax:  (310) 648-7619

The time to respond to any notice shall commence to run on the date of delivery
at the appropriate addresses (or attempted delivery if delivery is refused
during normal business hours).  A Partner may change the address to which
notices shall be sent to it, or any of its Authorized Representatives, by
written notice to all Partners (said change of address or of Authorized
Representatives to be effective upon receipt by all Partners).

     9.6  PRONOUNS AND PLURALS.  References herein to the singular shall include
the plural and to the plural shall include the singular, and references to the
masculine gender shall include the feminine and neuter genders (and vice versa),
except where the same shall not be appropriate.

     9.7  WAIVER.  No consent or waiver, express or implied, by any Partner to
or of any breach or default by any other Partner in the performance by the other
of its obligations hereunder shall be deemed or construed to be a consent or
waiver to or of any other breach or default by the other in the performance by
such other party of the same or any other obligations of such Partner hereunder.
Failure on the part of any Partner to object to or complain of any act or
failure to act of any other Partner or to declare any other Partner in default,
irrespective of how long such failure continues, shall not constitute a waiver
by such Partner of its rights hereunder.

     9.8  SEVERABILITY.  If any provision of this Agreement or the application
thereof to any Person or circumstance shall be invalid or unenforceable to any
extent, the remainder of this Agreement and the application of such provisions
to other Persons or circumstances shall not be affected thereby and shall be
enforced to the greatest extent permitted by law.


                                          77
<PAGE>

     9.9  TITLES AND CAPTIONS.  All Article or Section titles or captions
contained in this Agreement are for convenience only and shall not be deemed a
part of the content of this Agreement.

     9.10 AGREEMENT IN COUNTERPARTS.  This Agreement may be executed in several
counterparts, each of which shall be deemed an original, but all of which shall
constitute one and the same instrument when taken together.  In addition, this
Agreement may contain more than one counterpart of the signature page and the
Agreement may be executed by the affixing of the signatures of each of the
Partners to one or more of such counterpart signature pages; all of such
signature pages shall be read as though one, and shall have the same force and
effect as though all of the signers had signed a single signature page.  A
Partner shall be deemed to have executed and delivered this Agreement if and
when it has manually executed a counterpart signature page to this Agreement,
transmitted a copy of the same by facsimile to the other Partners at such other
Partner's facsimile number set forth above, and received a printed confirmation
of the successful receipt thereof by such other Partner.  This Agreement shall
not be binding on Partners hereto unless each Partner shall have executed and
delivered a copy of this Agreement to the other Partners.  If this Agreement is
executed and delivered by facsimile, each Partner who transmits its signature
page for this Agreement by facsimile shall promptly forward a manually executed
signature page to the other Partner (but a Partner's failure to do so promptly
shall not affect the validity of its execution and delivery of this Agreement by
facsimile transmission).

     9.11 BINDING AGREEMENT. This Agreement shall inure to the benefit of and be
binding upon the undersigned Partners and their respective heirs, executors,
legal or personal representatives, successors and assigns.  Whenever in this
instrument a reference to any party or Partner is made, such reference shall be
deemed to include a reference to the heirs, executors, legal or personal
representatives, successors and assigns of such party or Partner.

     9.12 FURTHER ASSURANCES.  Each Partner shall execute and deliver such
further instruments and do such further acts and things as may reasonably be
required to carry out the intent and purposes of this Agreement promptly upon
request from any other Partner.

     9.13 WAIVER OF PARTITION.  Unless otherwise specifically provided in this
Agreement (including Article 8), no Partner shall, and each Partner hereby
irrevocably waives the right to, either directly or indirectly, take any action
to require partition or appraisement of the Partnership, any Property, any
Investment, any Investment Entity, or any part thereof, and, notwithstanding any
provision of applicable law to the contrary, each Partner hereby irrevocably
waives any and all right to maintain any action for partition or to compel any
sale with respect to its interest in the Partnership or with respect to the
assets of the Partnership or the Investment Entities, or any part thereof.

     9.14 ENTIRE AGREEMENT.  This Agreement contains the final and entire
agreement among the parties hereto with respect to the subject matter hereof,
including the Investments, and they shall not be bound by any terms, conditions,
statements or representations, oral or written, with respect thereto that are
not contained herein.


                                          78
<PAGE>

     9.15 AMENDMENTS.  Except as expressly provided in this Agreement (including
Section 7.9.5), this Agreement may be modified or amended only upon the Approval
of the Partners.

     9.16 NO DRAFTING PRESUMPTION.  In interpreting the provisions of this
Agreement, no presumption shall apply against any Partner that otherwise would
operate against such Partner by reason of such document having been drafted by
such Partner or at the direction of such Partner or an Affiliate of such
Partner.

     9.17 NO THIRD-PARTY BENEFICIARIES.  Except for the representations
concerning conflict waivers pertaining to BFLLP in Section 7.8.9 (which shall
inure to the benefit of BFLLP), the provisions of this Agreement are not
intended to be for the benefit of any creditor or other Person (other than the
Partners in their capacities as such) to whom any debts, liabilities or
obligations are owed by (or who otherwise have a claim against or dealings with)
the Partnership or the Partners, and no such creditor or other Person shall
obtain any rights under any of such provisions (whether as a third-party
beneficiary or otherwise) or shall by reason of any such provisions make any
claim in respect to any debt, liability or obligation (or otherwise) including
any debt, liability or obligation with respect to Capital Contributions, against
the Partnership or the Partners.  In addition, no deficit balance in any
Partner's Capital Account or in the capital account of any partner or Partner of
a Partner shall be an asset of the Partnership, and no Partner shall be
obligated to restore any such deficit balance.





                     [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]










                                          79
<PAGE>


     IN WITNESS WHEREOF, this Agreement of Limited Partnership is executed, and
is effective for all purposes, as of the date first set forth above.

                    GENERAL PARTNER:

                    HCG DEVELOPMENT, L.L.C.,
                    a Delaware limited liability company

                    By:  Highridge Asset Management, L.L.C.,
                         a Delaware limited liability company

                         By:  Highridge Management, Inc.,
                              a California corporation, its
                              Managing Member

                              By:
                                 ---------------------------------
                                 Name:
                                      ----------------------------
                                 Title:
                                       ---------------------------


                         [SIGNATURES CONTINUED ON NEXT PAGE]



                                          80
<PAGE>

                    LIMITED PARTNERS:

                    SUMMIT PARTNERS I, L.L.C.,
                    a Delaware limited liability company


                    By:  Highridge Asset Management, L.L.C.,
                         a Delaware limited liability company,
                         its Manager

                         By:  Highridge Management Inc.,
                              a California corporation
                              its Managing Member

                              By:
                                 ---------------------------------
                                 Name:
                                      ----------------------------
                                 Title:
                                       ---------------------------


                    MACK-CALI CALIFORNIA DEVELOPMENT ASSOCIATES L.P.,  
                    a California limited partnership


                    By:  MACK-CALI SUB XXI, INC.,
                         a Delaware corporation, its general partner

                         By:
                            --------------------------------------

                              By:
                                 ---------------------------------
                                 Name:
                                      ----------------------------
                                 Title:
                                       ---------------------------

EXECUTED BY EACH OF THE UNDERSIGNED 
SOLELY TO CONFIRM THE PROVISIONS OF 
SECTION 3.11 THAT APPLY TO HIM:


- -------------------------
      JOHN S. LONG



- -------------------------
   EUGENE S. ROSENFELD


                                 [END OF SIGNATURES]



                                          81
<PAGE>

                                      EXHIBIT A

                                    DEFINED TERMS

     Capitalized terms that are used in the Agreement of Limited Partnership to
which this Exhibit is attached shall have the meaning set forth below in this
Exhibit A:

     "ABANDONMENT DECISION" is defined in Section 5.10(iv).

     "ACQUISITION DOCUMENTS" means the documentation necessary to acquire any
Investment or Property that has been Approved by the Partners for acquisition,
including any acquisition loan documentation.

     "ACT" shall mean the Delaware Revised Uniform Limited Partnership Act, as
amended from time to time (Delaware Code, Title 6, Sections 17-101, ET SEQ.).

     "ADJUSTED CAPITAL ACCOUNT DEFICIT" shall mean, with respect to any Partner,
the deficit balance, if any, in such Partner's Capital Account as of the end of
the relevant tax year, after giving effect to the following adjustments:

                    Credit to such Capital Account any amounts which such
Partner is obligated to restore or is deemed to be obligated to restore to the
Partnership pursuant to the penultimate sentences of Regulations Sections
1.704-2(g)(1) and 1.704-2(i)(5); and

                    Debit to such Capital Account the items described in
Sections 1.704-1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5), and
1.704-1(b)(2)(ii)(d)(6) of the Regulations.

The foregoing definition of Adjusted Capital Account Deficit is intended to
comply with the provisions of Section 1.704-1(b)(2)(ii)(d) of the Regulations
and shall be interpreted consistently therewith.

     "AFFILIATE" shall mean (a) with respect to any Highridge Partner:  John S.
Long, Eugene S. Rosenfeld, their Family Members, the Highridge GP, the Highridge
Limited Partner, and any Entity Controlled, Controlling or under common Control
(directly or indirectly) by or with one or more of them and/or their Affiliates,
and (b) with respect to any Mack-Cali Partner: the Mack-Cali Limited Partner,
any Co-General Partner and any Entity Controlled, Controlling or under Common
Control (directly or indirectly) by or with one or more of them and/or any of
their Affiliates.  For the purposes of this Agreement, the term "Control," or
any derivative thereof (including "Controlled by" or "Controlling"), when used
with respect to any specified Person, shall mean the possession, directly or
indirectly, of the power to direct or cause the direction of the management or
policies of such Person, whether through ownership of voting securities or
partnership or other ownership interests, or by contract; PROVIDED, HOWEVER,
that, without limiting the generality of the foregoing, (a) any Person which,
together with its Affiliates, owns, directly or indirectly, securities
representing more than 50% of the value or ordinary voting power of a
corporation or more than 50% of the partnership, general partnership, membership
or other ownership interests (based upon


                                         A-1
<PAGE>

value or vote) of any other Person is deemed to Control such corporation or
other Person, (b) a general partner shall always be deemed to Control any
partnership of which it is a general partner, and (c) a member-manager of a
limited liability company shall always be deemed to Control any limited
liability partnership of which it is a member- manager.

     "AGREEMENT" shall mean and refer to this Agreement of Limited Partnership
and all Exhibits referred to herein and attached hereto, each of which is hereby
made a part hereof, as amended and in effect from time to time.

     "AGREEMENT DATE" shall mean the date first written above as of which this
Agreement is effective.

     "ALL CASH ELECTION" is defined in Section 5.11(b).

     "APPRAISAL NOTICE" is defined in Section 5.11(a).

     "APPRAISAL FIRST OFFER PRICE" is defined in Section 5.11(a).

     "APPRAISED VALUE" is defined in Section 7.9.

     "APPROVAL" (and any variation thereof) of a Partner shall mean the prior
written (or oral to the extent permitted by Section 1.12) consent or approval of
such Partner, which may be granted or withheld in its sole discretion unless
otherwise expressly provided to the contrary in this Agreement.  Such Approval
shall be valid for a Partner who is not a natural person only if given by an
Authorized Representative of such Partner.  Use of the term "reasonable" or
"reasonably" in connection with the term "Approval" or any variation thereof or
with the term "satisfactory" means that such Approval shall not be withheld or
delayed unreasonably.  Unless either of such terms is used in connection with
the term "Approval" (or any variation thereof), such Approval may be granted or
withheld in a Partner's sole discretion.  If the Approval of any Partner to any
action is required under this Agreement and such Partner shall not have given
notice of disapproval or Approval of such action to the other Partners within
ten (10) Business Days after receipt of the notice requesting that such Approval
be given (or such earlier or later date as may be established pursuant to this
Agreement for the giving or withholding of such Approval), such Partner shall be
deemed not to have given such Approval.  Except as provided in Section 5.1, the
Approval of a Partner shall not be required from and after the date on which
such Partner has ceased to have Approval rights under this Agreement, regardless
of whether this Agreement otherwise requires the "Approval" of such Partner or
the "Approval" of the Partners".  The terms "Approved by the Partners" and
"Approved by the General Partners" (or any variation of such terms) are defined
in Section 1.12.

     "APPROVED DEVELOPMENT PLAN" means a Development Plan (or supplement
thereto) with respect to a Property or Investment that has been Approved by the
Partners as provided in Section 5.1.3.4 of this Agreement.

     "APPROVED OVERHEAD BUDGET" is defined in Section 5.1.3.1.


                                         A-2
<PAGE>

     "APPROPRIATE SHARING RATIO" is defined in Section 3.5.4.

     "AUTHORIZED REPRESENTATIVES" is defined in Section 1.12 hereof.

     "BANKRUPT" shall mean, with respect to any Partner, if:

               (a)  such Partner, or a Person that Controls such Partner (the
"Controlling Person"), shall (i) apply for or consent to the appointment of, or
the taking of possession by, a receiver, custodian, trustee, administrator,
liquidator or the like of itself or of all or of a substantial portion of its
assets, (ii) admit in writing its inability, or be generally unable or deemed
unable under any applicable law, to pay its debts as such debts become due,
(iii) convene a meeting of creditors for the purpose of consummating an
out-of-court arrangement, or entering into a composition, extension or similar
arrangement, with creditors in respect of all or a substantial portion of its
debts, (iv) make a general assignment for the benefit of its creditors, (v)
place itself or allow itself to be placed, voluntarily or involuntarily, under
the protection of the law of any jurisdiction relating to bankruptcy,
insolvency, reorganization, winding-up, or composition or adjustment of debts,
or (vi) take any action for the purpose of effecting any of the foregoing; or

               (b)  a proceeding or case shall be commenced in any court of
competent jurisdiction, seeking (i) the liquidation, reorganization,
dissolution, winding-up, or composition or readjustment of debts, of such
Partner or a Controlling Person with respect thereto, (ii) the appointment of a
trustee, receiver, custodian, administrator, liquidator or the like of such
Partner or of a Controlling Person with respect thereto or of all or a
substantial portion of such Partner's or such Controlling Person's assets, or
(iii) similar relief in respect of such Partner or such Controlling Person under
any law relating to bankruptcy, insolvency, reorganization, winding-up, or
composition or adjustment of debts, without the consent of the other Partner and
such proceeding or case shall continue undismissed for a period of ninety (90)
days, or an order, judgment or decree approving or ordering any of the foregoing
shall be entered and continue unstayed and in effect for a period of sixty (60)
days, or an order for relief or other legal instrument of similar effect against
such Partner or such Controlling Person shall be entered in an involuntary case
under such law and shall continue for a period of sixty (60) days.

     "BANKRUPTCY" shall mean any condition described in the definition of
"Bankrupt" which renders a Partner a Bankrupt.

     "BANKRUPTCY CODE" shall mean Title 11 of the United States Code, 11 U.S.C.
Section 101 ET SEQ., as is now in effect or hereafter amended.

     "BFLLP" is defined in Section 7.8.9.

     "BORROWING MEMBER" is defined in Section 3.11.


                                         A-3
<PAGE>

     "BUSINESS DAY" shall mean any day on which commercial banks are authorized
to do business and are not required by law or executive order to close in both
Los Angeles, California and New York, New York.

     "BUY-OUT PRICE" is defined in Section 7.9.1.

     "CAPITAL ACCOUNT" shall mean, with respect to any Partner, the book Capital
Account maintained for such Partner in accordance with the provisions of Section
3.1.

     "CAPITAL CONTRIBUTION" or "CAPITAL CONTRIBUTIONS" shall mean the amount of
cash and the net fair market value (as reasonably Approved by the Partners) of
any property contributed to the capital of the Partnership by the Partners
pursuant to this Agreement.  The term "Capital Contributions" with respect to a
Partner shall include (i) the contributions of such Partner made pursuant to
Sections 2.1 and 2.2 and any other Section of this Agreement pursuant to which
Capital Contributions are deemed made by the Partners (including Section 4.1.2),
and (ii) such Partner's payments that are Approved by the Partners (to the
extent such Approval is required under this Agreement) which are made to
third-party creditors of the Partnership with respect to Partnership obligations
unless and until reimbursed by the Partnership, but only to the extent
reimbursable to such Partner under this Agreement.  The Capital Contribution of
the Highridge Partners attributable to their contribution of the El Segundo Land
is set forth in Section 2.2.2(b).

     "CAPITAL EQUALIZATION DISTRIBUTION" is defined in Section 2.1.2.3.

     "CAPITAL RECEIPTS" shall mean (i) the sum of (a) the proceeds received by
the Partnership from the sale, exchange or any other disposition of all or any
portion of any Investment (including any Partnership Interest), plus (b) all
amounts received by the Partnership from any Investment Entity on account of the
sale, exchange or other disposition of all or any portion of any Property,
Investment or other asset owned by such Investment Entity reduced by (ii) the
sum of (a) all expenditures made by the Partnership in connection with such
sale, exchange or other disposition that are required in connection with such
sale, exchange or other disposition or that are reasonably Approved by the
Partners, plus (b) loan repayments made from such proceeds as are required
pursuant to loan documentation or otherwise Approved by the Partners, plus
(c) amounts set aside as reserves therefrom that have been reasonably Approved
by the Partners.

     "CERTIFICATE" shall mean the Certificate of Limited Partnership of the
Partnership, as filed with the Office of the Secretary of State of the State of
Delaware in accordance with the Act, and as in effect from time to time.

     "CLOSING DATE" is defined in Section 7.9.2.

     "CODE" shall mean the Internal Revenue Code of 1986, as amended and in
effect from time to time (or any corresponding provision of succeeding law).


                                         A-4
<PAGE>

     "CO-GENERAL PARTNER" means any General Partner appointed by the Mack-Cali
Limited Partner as provided in Section 7.9.5.

     "CONTROL" or "Controlled by" or "Controlling", is defined in the definition
of "Affiliate."

     "CONTROL CHANGE NOTICE" is defined in Section 7.9.5.

     "CONTROLLING PERSON" is defined in the definition of the term "Bankrupt".

     "DEADLOCK" is defined in Section 5.10.

     "DEADLOCK NOTICE" is defined in Section 5.10.

     "DEFAULTING PARTNER" shall have the meaning set forth in Section 2.2.2.

     "DEVELOPMENT PLAN" is defined in Section 5.1.3.4.

     "DETERMINATION DATE" is defined in Section 5.9.

     "DISCRETIONARY OUTLAYS" is defined in Section 5.1.3.2.

     "DISPOSITION" is defined in the definition of "Gain or Loss on
Disposition."

     "DUE DATE" is defined in Section 2.2.1.

     "DUE DILIGENCE MATERIALS" shall mean any documents that have been made
available to the Partners under Section 5.1.6.2 in connection with acquiring and
Approving Investments, including any Investment Entity's acquisition of a
Property, such as lease abstracts, contracts (including service contracts and
brokerage agreements), title reports, surveys, engineering and geological
studies and reports, environmental investigations and reports, cost analyses,
feasibility studies, financial projections, leases and other such materials
relating to any Investment, Property or proposed investment by the Partnership
or any Investment Entity, including the documents described on Exhibit K.

     "ELECTING MEMBER(S)" is defined in Section 7.9.1.

     "EL SEGUNDO LAND" is defined in Section 2.1.1(b).

     "EL SEGUNDO VALUATION DATE" means the earlier to occur of (a) the sale or
other disposition of the El Segundo Land Property (as developed) for a gross
disposition price of at lest $55 million or (b) the Partnership receiving an
appraisal for the El Segundo Land Property (as then developed) from an appraiser
who has been Approved by the Partners of at least $55 million.


                                         A-5
<PAGE>

     "EMERGENCY" shall mean an event which reasonably requires immediate action
involving the expenditure of funds or other action in order to avert or mitigate
significant damage to Persons or property in connection with the Partnership,
any Investment Entity or any of their assets if it is not possible (after a
reasonable effort) for a Partner to reach or obtain the Approval of the other
Partners whose Approval to take such action otherwise would be required.

     "ENTITY" shall mean any general partnership, limited partnership, limited
liability company, corporation, joint venture, trust, business trust,
joint-stock company, cooperative, association or other firm or any governmental
or political subdivision or agency, department or instrumentality thereof.

     "ERISA" shall mean the Employee Retirement Income Security Act of 1974, as
amended from time to time, and any successor statute.

     "FAMILY MEMBER" with respect to an individual shall mean such individual's
present or former spouse, brothers and sisters (whether by whole or half blood),
lineal ascendants or descendants or their respective spouses, or a trustee or
custodian for the benefit of any of them.

     "FIRST OFFER NOTICE" is defined in Section 5.11.

     "FMV APPRAISAL PROCEDURE" is defined in Section 5.11.

     "FMV NOTICE" is defined in Section 5.10(iv).

     "FORCE MAJEURE" shall mean any act of God (including weather disturbance,
earthquake, fire, mechanical failure of equipment, disease and the like), labor
strike or work stoppage or slowdown, material shortages, sabotage, war, riot,
moratorium, governmental action or inaction, or any other act of any third party
that reasonably prevents an action from being taken through no fault of the
Partner who is required to take such action or such Partner's Affiliates.

     "FUNDING NOTICE" is defined in Section 2.1.2.

     "FUNDING PROPORTION" shall mean the percentage set forth as such for each
Partner on Exhibit B hereto.

     "GAIN" OR "LOSS" ON "DISPOSITION" shall mean (i) the gain or loss (as the
case may be) of the Partnership for federal income tax purposes (as computed for
book purposes), arising from a sale, exchange or other taxable disposition
(including casualty or condemnation) of all or a portion of any Investment
(including any Partnership Interest) and (ii) the Partnership's distributive
share of the gain or loss for federal income tax purposes arising from the sale,
exchange or other taxable disposition of all or a portion of any of the asset of
any Investment Entity.  Gain or loss resulting from any disposition of Revalued
Property for which there is a difference between Gross Asset Value and adjusted
tax basis (as computed for tax as opposed


                                         A-6
<PAGE>

to book purposes) shall be computed by reference to the Gross Asset Value (as
reasonably Approved by the Partners) of the property disposed of (as adjusted
for book purposes from time to time).

     "GAV NOTICE" is defined in Section 5.10(iii).

     "GENERAL PARTNER(S)" means the Managing General Partner and any Co-General
Partner for so long as such Partner shall be a General Partner under this
Agreement.

     "GROSS ASSET VALUE" shall mean, with respect to any asset, the adjusted
basis of the asset for federal income tax purposes, adjusted as provided in
Section 3.10.

     "HIGHRIDGE PARTNERS" shall mean the Managing General Partner, the Highridge
Limited Partner, and any other Person to whom either of them have transferred
all or a portion of their interest in the Partnership pursuant to this
Agreement.

     "HIGHRIDGE SUBORDINATED CONTRIBUTION RETURN" shall mean an amount equal to
the Mezzanine Debt Rate (expressed as a percentage) for the actual numbers of
days for which the Highridge Subordinated Contribution Return is being
determined, cumulative and compounded quarterly, multiplied by the Undistributed
Highridge Subordinated Contributions outstanding from time to time, computed by
using April 23, 1998 as the date on which Highridge Subordinated Contributions
are deemed to have been made to the Partnership and using the actual dates on
which distributions in repayment thereof are made from time to time to the
Highridge Partners.

     "HIGHRIDGE SUBORDINATED CONTRIBUTIONS" is defined in Section 2.1.1(b).

     "INCLUDING" or "INCLUDING" shall mean "including, without limitation."

     "INCOME TAX REGULATIONS" or "REGULATIONS" shall mean the final or temporary
regulations promulgated from time to time under the Code or, if no final or
temporary regulations with respect to a tax issue then are in effect, proposed
regulations then in effect if reasonably Approved by the Partners, and
administrative and judicial interpretations thereof.

     "INDEPENDENT TAX COUNSEL" shall mean a nationally recognized tax counsel
reasonably Approved by the Partners that is capable of advising the Partnership
with respect to specified tax matters.

     "INITIAL DEVELOPMENT PLAN" is defined in Section 5.1.3.4.

     "INVESTED CAPITAL" with respect to each Partner shall mean the aggregate of
all Capital Contributions made from time to time to the Partnership by such
Partner other than the Highridge Subordinated Contributions, reduced by the
aggregate of all distributions previously made (or deemed made) to such Partner
pursuant to Section 4.1.1(c) in repayment of the Invested Capital of such
Partner.


                                         A-7
<PAGE>

     "INVESTMENT ENTITY" is defined in Section 1.5.1.

     "INVESTMENT ENTITY AGREEMENT" shall mean, individually or collectively, the
operating agreement or limited partnership agreement pursuant to which each
Investment Entity is formed and operated, as in effect from time to time, with
such changes therein as may be Approved by the Partners.

     "INVESTMENT ENTITY TAX LOAN" is defined in Section 3.11.

     "INVESTMENTS" is defined in Section 1.5.2.

     "INVOKING PARTNER" is defined in Section 5.10(iii).

     "LIABILITIES" is defined in Section 5.5.3.

     "LIQUIDATOR" is defined in Section 8.3.

     "MACK-CALI LIMITED PARTNER" is defined in the Heading to this Agreement.

     "MACK-CALI PARTNERS" shall mean the Mack-Cali Limited Partner, any
Co-General Partner, and any other Person to whom any of them have transferred
all or a portion of their interest in the Partnership pursuant to this
Agreement.

     "MACK-CALI REALTY" means Mack-Cali Realty Corporation.

     "MACK-CALI SALE RIGHT" is defined in Section 5.10(iv).

     "MAJOR DECISIONS" is defined in Section 5.1.5.

     "MAJOR DEFAULT NOTICE" is defined in Section 5.9.

     "MAJOR DEFAULT" means, with respect to a Partner, that such Partner or any
of such Partner's Affiliates has engaged in actual fraud with respect to the
Partnership, an investment Entity, any Investment or any Property or has
intentionally misappropriated Partnership or Investment Entity Funds.

     "MANAGING GENERAL PARTNER" is defined in the Heading to this Agreement.

     "MANAGING GENERAL PARTNER GUARANTIES" is defined in Section 3.5.4.

     "MANAGING GENERAL PARTNER SALE RIGHT" is defined in Section 5.10(iv).
          
     "MANAGEMENT AGREEMENT" is defined in Section 5.2(b).

     "MATERIAL" (and any variation thereof) is defined in Section 5.1.1.10.


                                         A-8
<PAGE>

     "MAXIMUM TAX RATE" shall mean the highest combined effective maximum tax
rate in effect from time to time with respect to any Partner (based on the
assumption that individual rates apply to such Partner) for federal, state and
local income tax purposes, computed by taking into account the tax savings
resulting from the deductibility of state and local income taxes to the extent
permitted for federal purposes and taking into account the tax on
self-employment income (also based on the assumption that each Member is an
individual taxpayer).  The Maximum Tax Rate shall be computed by the
Partnership's accountants at the Borrowing Partners' expense whenever the
Maximum Tax Rate needs to be determined under Section 3.11.

     "MEZZANINE DEBT RATE" shall mean (i) fifteen percent (15%) per annum unless
and until the Partnership or an Investment Entity obtains any Third Party
Mezzanine Financing with respect to the El Segundo Land, and (ii) from and after
such obtaining of such Third Party Mezzanine Financing, the interest rate in
effect from time to time on such Third Party Mezzanine Financing.

     "NET AVAILABLE CASH," with respect to any period, shall mean (i) the sum of
all cash receipts of the Partnership during such period from all sources
(including Capital Contributions, cash on hand at the beginning of such period
to the extent not held in reserves, distributions from the Investment Entities
and any funds released during such period from cash reserves previously
established), minus (ii) the sum of (a) Capital Receipts, (b) Net Mortgage
Proceeds, (c) Operating Costs, and (d) any Investment Entity Tax Loans, for such
period.

     "NET MORTGAGE PROCEEDS" shall mean (i) the sum of (a) the proceeds of any
loan made to the Partnership and the proceeds from refinancing any such loan,
plus (b) any amount released from cash escrow accounts established under any
loan to the Partnership, plus (c) the proceeds received by the Partnership from
any Investment Entity on account of any loan made to such Investment Entity and
the proceeds from refinancing any such loan received from any Investment Entity,
other than Investment Entity Tax Loans, reduced by (ii) the sum of (a) any
amounts required to fund the Partnership's expenditures that are reasonably
Approved by the Partners or that are otherwise permitted to be withheld from
such amounts for such purpose under this Agreement, (b) any and all expenses
incurred by the Partnership in connection with such loan or refinancing that are
reasonably Approved by the Partners, (c) amounts used as permitted under this
Agreement to repay other indebtedness of the Partnership, plus (d) amounts
thereof retained as reserves under this Agreement for Shortfall Disbursements by
the Partnership (such reserves to be reasonably Approved by the Partners).

     "95% STABILIZATION" shall mean, with respect to a Property, the date on
which completion of such Property has occurred and binding leases for at least
95% of the leaseable space in such Property have been entered into for which
either (i) rent payments have commenced or (ii) all required building permits
with respect to such lease have been obtained, to the knowledge of the Highridge
Partners (as defined in Exhibit H), the tenant improvements required to be made
under such lease that are a condition precedent to the commencement of rent
payments under such lease ("Required Tenant Improvements") can be completed
within six months, and rent payments will commence within six months if all
Required Tenant Improvements were made before the expiration of such six-month
period.


                                         A-9
<PAGE>

     "NON-DEFAULTING MEMBER" is defined in Section 2.2.2.

     "NON-DISCRETIONARY ITEMS" shall mean expenditures payable by the
Partnership or any Investment Entity for increases over the amount set forth in
the Partnership's most recent Approved Budget for the following items, but only
to the extent not reasonably anticipated at the time such Approved  Budget was
submitted to the Partners for Approval under Section 5.1.3.1:  taxes (including
real estate taxes, but excluding any Partner's tax liability), utilities,
bonding costs, insurance (including earthquake insurance, and insurance
described under Section 5.1.1 to the extent provided therein), debt service and
expenses or other amounts required to be paid by the Partnership or any
Investment Entity under contracts or agreements of the Partnership or any
Investment Entity that have been Approved by the Partners(or are permitted to be
entered into without such Approval).

     "NONRECOURSE DEDUCTIONS" is defined in Section 3.5.6.

     "NONRECOURSE LIABILITY" is defined in Section 3.5.6.

     "NON-VOTING PARTNER" is defined in Section 5.1.6.1.

     "OPERATING COSTS" for a period shall mean the sum of (i) all cash
expenditures of the Partnership (which expenditures shall be subject to the
Approved Budget limitations of Section 5.1.3) made during such period for
current costs and expenses (except to the extent constituting a reduction in
computing Net Mortgage Proceeds or Capital Receipts for such period), including
acquisition costs of the Investments (including the Partnership Interests), due
diligence expenditures, payments of interest and principal or other monetary
obligations due under any loan made to the Partnership; accounting, legal and
auditing fees; taxes payable by the Partnership; public or private utility
charges; sales, use, payroll taxes and withholding taxes related thereto; and
all other advertising, management, leasing, government approval, and other
operating, construction and development costs, expenses and capital expenditures
(including fees of land use consultants, engineers, architects, municipal
development fees, bond costs and the like) actually paid with respect to the
Investments or the Partnership's business generally (subject to the Approved
Budget limitations of Section 5.1.3) or reimbursed or paid to Partners
(including Overhead Payments), plus (ii) such reserves established from time to
time during such period upon the reasonable Approval of the Partners (except to
the extent constituting a reduction in computing Net Mortgage Proceeds or
Capital Receipts for such period), plus (iii) any amounts contributed by the
Partnership to any Investment Entity pursuant to the applicable Investment
Entity Agreement during such period (whether pursuant to Section 2.5 or
otherwise).

     "OTHER PARTNER" is defined in Section 5.10(iii).

     "OVERHEAD PAYMENTS" is defined in Section 5.1.3.1.

     "PARTNER ASSIGNEE" is defined in Section 7.4.


                                         A-10
<PAGE>

     "PARTNER GROUP" means either (a) the Highridge Partners or (b) the
Mack-Cali Partners (there are two Partner Groups).

     "PARTNER NONRECOURSE DEBT" is defined in Section 3.5.6 hereof.

     "PARTNER NONRECOURSE DEBT MINIMUM GAIN" is defined in Section 3.5.6 hereof.

     "PARTNERS" shall mean the Managing General Partner, the Highridge Limited
Partner, the Mack-Cali Limited Partner and any Co-General Partner admitted as
such pursuant to this Agreement (each a "Partner"), in their respective
capacities as Partners, and any of their successors in their respective
capacities as Partners admitted to the Partnership as Partners hereunder, and
any other Person admitted as a Partner under this Agreement, for so long as any
such Person is a Partner under the terms of this Agreement.

     "PARTNER NONRECOURSE DEDUCTIONS" is defined in Section 3.5.6 hereof.

     "PARTNERSHIP" shall mean HPMC Development Partners, L.P.,  a Delaware
limited Partnership formed under the Act and operated pursuant to this
Agreement.

     "PARTNERSHIP ACCOUNTING YEAR" shall mean and refer to the accounting year
of the Partnership ending on December 31 of each calendar year or such shorter
fiscal period during such year for which a relevant determination is being made
under this Agreement.

     "PARTNERSHIP INTEREST" shall mean the interest in any Investment Entity
acquired by the Partnership, as in effect from time to time under the applicable
Investment Entity Agreement.

     "PARTNERSHIP MINIMUM GAIN" is defined in Section 3.5.6 hereof.

     "PERFORMANCE DEFAULT" with respect to the Managing General Partner and its
Affiliates shall be deemed to have occurred (subject to Section 5.9) with
respect to a Property or Investment if (a) the Managing General Partner shall
have failed to cause compliance with any Approved Development Plan with respect
to such Property or Investment in any Material respect for any reason other than
Force Majeure, or (b) if a Highridge Partner or an Affiliate of any Highridge
Partner has breached the provisions of any agreement entered into between such
Person  and the Partnership or any Investment Entity and has failed to cure such
breach within the time required by such agreement (but this clause (b) shall
apply with respect to a Property or Investment only if such breach was not
willful and therefore does not constitute a Removal Default for which separate
remedies are provided elsewhere in this Agreement).

     "PERSON" shall mean any individual or Entity.

     "PREFERRED RETURN" shall mean an amount equal to ten percent (10%) per
annum, on a calendar year basis, for the actual number of days for which the
Preferred Return is being determined, cumulative and compounded quarterly,
multiplied by the Invested Capital of each of the Partners outstanding from time
to time, computed by using April 23, 1998 as the date which the Section 2.1.1
Contributions of the Partners shown on Exhibit B were made by the


                                         A-11
<PAGE>

Partners, the actual dates on which a Partner's Capital Contributions (other
than such Section 2.1.1 Contributions and the Highridge Subordinated
Contributions) are made to the Partnership from time to time (if any), and using
the actual dates on which distributions are made (or deemed made) to such
Partner pursuant to Section 4.1.1(c).

     "PRIME RATE" shall mean the so-called "Reference Rate" announced by Bank of
America N.T.&S.A. at Los Angeles, California, from time to time.

     "PROFIT" OR "LOSS" shall mean, for each Partnership Accounting Year, an
amount equal to the Partnership's net taxable income or loss (as computed for
book purposes) for such Accounting Year (determined without regard to any items
of income, gain or deduction, as computed for book purposes, taken into account
in computing the Partnership's Gain or Loss on Disposition for such Accounting
Year), determined in accordance with Code Section 703(a) (for this purpose, all
items of income, gain, loss or deduction, as computed for book purposes,
required to be stated separately pursuant to Code Section 703(a)(1) shall be
included in computing such taxable income or loss), including the Partnership's
allocated share thereof from any Investment Entity, with the following
adjustments:

     Any income of the Partnership that is exempt from federal income tax and is
not otherwise taken into account in computing Profit or Loss shall be added to
such taxable income or loss (as computed for book purposes);

     In the event the agreed fair market value of any Partnership asset is
adjusted pursuant to Regulations Section 1.704-l(b)(2)(iv)(f) or other pertinent
sections of such Regulations, the amount of such adjustment shall be taken into
account as Gain or Loss on Disposition of such asset for purposes of computing
Profit or Loss; and in lieu of the depreciation, amortization and other cost
recovery deductions taken into account in computing such taxable income or loss,
there shall be taken into account depreciation, amortization or other cost
recovery computed with reference to Gross Asset Value of Partnership property
reasonably Approved by the Partners (subject to Section 5.10(iii)) (if different
from its adjusted tax basis) pursuant to Regulations Section
1.704-l(b)(2)(iv)(g) for such Partnership Accounting Year; and

     Notwithstanding any other provisions, any items which are specially
allocated pursuant to Sections 3.3, 3.4, 3.5, 3.6 and 3.9 shall not be taken
into account in computing Profit or Loss.

     "PROPERTIES" is defined in Section 1.5.1.

     "PROPERTY DEADLOCK" is defined in Section 5.11(a).

     "PROPONENT GROUP" is defined in Section 5.11(a).

     "PROPONENT GROUP FIRST OFFER PRICE" is defined in Section 5.11(a).

     "PROPONENT GROUP INTEREST PURCHASE PRICE" is defined in Section 5.11(a).


                                         A-12
<PAGE>

     "PURCHASE NOTICE" is defined in Section 7.9.1.

     "RECONTRIBUTING MEMBER" is defined in Section 3.5.4.

     "REGULATIONS" is defined in the definition of "Income Tax Regulations."

     "REIT" is defined in Section 5.1.1.2.

     "REIT SHARE VALUE" is defined in Section 8.3.8. 

     "REQUIRED ADDITIONAL CONTRIBUTIONS" is defined in Section 2.1.2.

     "REMOVAL DEFAULT" means, with respect to the Managing General Partner, that
such Partner or any of such Partner's Affiliates has committed gross negligence
with respect to the Partnership, an Investment Entity, an Investment or a
Property, or has willfully breached the provisions of this Agreement, any
Investment Entity Agreement or any other agreement entered into between such
Person and the Partnership or any Investment Entity, in each case if the same is
not cured within the time required by Section 9.2 of this Agreement, such
Investment Entity Agreement, or such other agreement (as applicable).

     "RESIDUAL PERCENTAGE" of a Partner as of any relevant time shall mean the
Residual Percentage set forth on Exhibit B for such Partner.

     "RESPONDENT GROUP" is defined in Section 5.11(a).

     "RESPONDENT GROUP INTEREST PURCHASE PRICE" is defined in Section 5.11(a).

     "REVALUED PROPERTY" is defined in Section 3.5.3.2, and includes the El
Segundo Land.

     "SECTION 2.2.1 CONTRIBUTION" is defined in Section 2.2.1.

     "SHORTFALL" is defined in Section 2.1.2.

     "SUBSEQUENT DEVELOPMENT PLAN" is defined in Section 5.1.3.4.

     "SUMMIT RIDGE LAND" shall mean that certain parcel of real property that is
described on Exhibit D-2 (including improvements thereon) that is to be acquired
by purchase by the Partnership (or an Investment Entity formed by the
Partnership) from a seller who is not an Affiliate of any Partner.

     "TAX MATTERS PARTNER" is defined in Section 5.4 (which references the
Code).

     "TAX PAYMENT LOAN" is defined in Section 3.11.

     "TAX TERMINATION" is defined in Section 7.5.1.3.


                                         A-13
<PAGE>

     "TERMINATED PARTNER" shall mean (i) any Partner that has failed to make a
Capital Contribution when required and who has become a Defaulting Partner by
reason thereof under Section 2.2.2, (ii) any Partner that becomes Bankrupt,
(iii) any Partner which has been dissolved (and has not been reconstituted
within sixty (60) days thereafter) or, if an individual, who has died, (iv) any
Partner which has committed a Major Default or (v) any Partner who has breached
the restrictions on Transfer of its interest in the Partnership contained in
Article 7.  If any Partner in a Partner Group is a Terminated Partner, all
Partners in such Partner Group shall also be deemed to be Terminated Partners,
and shall be subject to all of the remedies applicable against a Terminated
Partner under this Agreement, including the loss of its Approval rights and the
obligation to sell its interest in the Partnership as provided in Section 7.9.

     "TERMINATION DATE" shall mean the date upon which a Partner became a
Terminated Partner.

     "THIRD PARTY MEZZANINE FINANCING" with respect to a Property means that
portion of the Partnership's or Investment Entity's financing with respect to
such Property which, when added to the Partnership's conventional financing with
respect to such Property, will cause such Property to be 85% financed with debt.

     "TRANSFER" shall mean (i) the issuance, transfer, sale, gift, grant,
conveyance, assignment, encumbrance, pledge, hypothecation or redemption,
directly or indirectly, of any equity ownership interest (whether stock, general
partnership interest, partnership interest, membership interest or otherwise) in
the Partnership or in any Person holding a direct (or indirect through tiered
Entities) interest in the Partnership, or the merger or consolidation of any
such Person into or with another Person, as the case may be; and (ii) the
execution and delivery by any Person holding a direct (or indirect through
tiered Entities) interest in the Partnership of a contract of sale, option or
other agreement providing for any of the foregoing.

     "UNDISTRIBUTED HIGHRIDGE SUBORDINATED CONTRIBUTIONS" shall mean the
Highridge Subordinated Contributions less distributions previously made (or
deemed made) to the Highridge Partners under Section 4.1.1(e) and 4.1.2 (to the
extent deemed Undistributed to repay Highridge Subordinated Contributions under
Section 4.1.2).

     "UNDISTRIBUTED HIGHRIDGE SUBORDINATED RETURN" means an amount equal to the
Highridge Subordinated Contribution Return accrued to the date the Undistributed
Highridge Subordinated Return is being determined, less all distributions made
(or deemed made) to the Highridge Partners pursuant to Sections 4.1.1(d) and
4.1.2 (to the extent deemed to pay Undistributed Highridge Subordinated Return
under Section 4.1.2).

     "UNDISTRIBUTED PREFERRED RETURN" with respect to a Partner means an amount
equal to the Preferred Return of each Partner accrued to the date the
Undistributed Preferred Return is being determined, less all distributions made
(or deemed made) to such Partner pursuant to Sections 4.1.1(a) and (b).

     "UNREIMBURSED PAYMENTS" is defined in Section 3.5.4.


                                         A-14
<PAGE>

                                      EXHIBIT B

                   FUNDING PROPORTIONS, SECTION 2.1.1 CONTRIBUTIONS
                               AND RESIDUAL PERCENTAGES



                            Section 2.1.1           Funding       Residual
Partner                  Contributions (Cash)     Proportion     Percentage
- -------                  --------------------     ----------     ----------

Highridge GP                  $    50,000              1%             1%
Highridge Limited Partner     $   950,000             19%            49%
Mack-Cali Limited Partner     $19,200,000             80%            50%
                              -----------            ----           ----
     Total                    $20,200,000            100%           100%
                              ===========            ====           ====

                                         Section 2.1.1
                                         Contributions
                                        (Agreed Value of
                                         El Segundo Land)
                                        -----------------
                                                   Highridge
                                   Invested       Subordinated
     Partner                       Capital        Contributions
     --------                      --------       -------------

     Highridge GP                  $  350,000     $   100,000

     Highridge Limited Partner      6,650,000       1,900,000

                                   ----------     -----------

          Totals                   $7,000,000     $ 2,000,000
                                   ==========     ===========

Note:     The Section 2.1.1 Contributions shown on this Exhibit B are deemed
          contributed to the Partnership as of April 23, 1998.  All additional
          Capital Contributions shall be made only as provided in the
          Partnership Agreement.


                                         B-1
<PAGE>

                                      EXHIBIT C

                               INITIAL DEVELOPMENT PLAN
               (INCLUDING APPROVED BUDGET AND APPROVED OVERHEAD BUDGET)
FOR THE EL SEGUNDO LAND AND 
THE SUMMIT RIDGE (CARROLL MESA) LAND


          For purposes of this Agreement, the Partners confirm that the
Development Plan (including the Approved Budget and Approved Overhead budget)
for each of the El Segundo Land and the Summit Ridge (Carroll Mesa) Land shall
be the document having such title that has been separately delivered and
Approved in writing by the Partners as of even date herewith.












                                         C-1
<PAGE>
                                     EXHIBIT D-1

                       LEGAL DESCRIPTION OF THE EL SEGUNDO LAND


                                  [BEGINS NEXT PAGE]

















                                        D-1-1
<PAGE>

                                    EXHIBIT D-2
                                          
             LEGAL DESCRIPTION OF THE SUMMIT RIDGE (CARROLL MESA) LAND
                                          
                                          
                                 [BEGINS NEXT PAGE]















                                         D-2
<PAGE>

                                      EXHIBIT E

                                OWNERSHIP OF PARTNERS

                           Members                     % Capital      % Profits
Partner                  or Partners                    Interest       Interest
- -------                  -----------                   ---------      ---------

Highridge GP             __________*                     _____%         _____%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

Highridge Limited
 Partner                 __________*                     _____%         _____%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

Mack-Cali Limited     General Partner:                  Aggregate      Aggregate
 Partner              Mack-Cali Sub XXI,                   100%           100%
                      Inc., a Delaware
                      corporation and

                     Limited Partner:
                       Mack-Cali Realty, L.P.,
                       a Delaware limited
                       partnership (both
                       Controlled by Mack-Cali
                       Realty Corporation)


- -----------------

- -    SEE CHART ATTACHED AS EXHIBIT E-2 (BEGINS NEXT PAGE).


                                         E-1
<PAGE>

                                      EXHIBIT F

                               [INTENTIONALLY OMITTED]

















                                         F-1
<PAGE>

                                      EXHIBIT G

                               CLAIMS AND ENCUMBRANCES 
                                  ON EL SEGUNDO LAND
                              (INCLUDING ENVIRONMENTAL)



                    None except those listed or described in the
                    Title Report and Survey or the Environmental
                    Reports (as such terms are defined in Exhibit H)















                                         G-1
<PAGE>

                                      EXHIBIT H

                                   EL SEGUNDO LAND
                            REPRESENTATIONS AND WARRANTIES


               In order to induce the Mack-Cali Limited Partner to enter into
the Partnership Agreement to which this Exhibit H is attached, each of the
Highridge Partners hereby represents and warrants the following with respect to
the El Segundo Land as of the date of the execution and delivery of this
Agreement and the Contribution of the El Segundo Land to the Partnership under
this Agreement (the term "knowledge" as used in this Exhibit H with respect to
the Highridge Partners means the actual and specific knowledge of any of John S.
Long, Eugene S. Rosenfeld, Steven A. Berlinger or Jack Mahoney):

               (a)  Immediately prior to their contribution of the El Segundo
Land to the Partnership pursuant to this Agreement, the Highridge Partners owned
good and marketable title to (and owned all of the ownership interests in) the
El Segundo Land, subject only to the matters shown on Exhibit G and the title
report and survey with respect to the El Segundo Land that were furnished by the
Highridge Partners to the Mack-Cali Limited Partner prior to executing this
Agreement, and any updates thereof (the "Title Report and Survey");

               (b)  Upon the execution and delivery of this Agreement by all of
the parties hereto, the Highridge Partners or their Affiliates will have no
remaining ownership interest in, or rights with respect to, the El Segundo Land
except for the indirect interest of the Highridge Partners therein as the owners
of interests as Partners in the Partnership;

               (c)  None of the Highridge Partners has assigned, pledged or
otherwise hypothecated or encumbered its ownership interests in the El Segundo
Land prior to the contribution of the El Segundo Land to the Partnership, and
none of the Highridge Partners has knowledge of any claims or encumbrances that
are pending with respect to the El Segundo Land other than those set forth on
Exhibit G, the Title Report and Survey or the Environmental Reports (defined in
paragraph (e) of this Exhibit H);

               (d)  The adjusted tax basis of the El Segundo Land of each of the
Highridge Partners at the date of their contribution of the El Segundo Land to
the Partnership is as set forth in the schedule that has been (or shall be,
within ten Business Days after the execution of this Agreement) provided to the
Mack-Cali Partners by the Highridge Partners, and such amount is the correct
amount to be credited to the Highridge Partners' tax capital accounts referred
to in Section 3.5.3.2 with respect to their contribution of the El Segundo Land;

               (e)  To the knowledge of the Highridge Partners, there are no
actions, suits, labor disputes, litigation or proceedings currently pending or
threatened against or related to all or any part of the El Segundo Land, the
environmental condition thereof, or the operation thereof, except as set forth
on Exhibit G, the Title Report and Survey or the Phase I environmental survey
and materials prepared in connection therewith that have been furnished


                                         H-1
<PAGE>

to the Mack-Cali Limited Partner by the Highridge Partners prior to the
execution of this Agreement that are listed on Exhibit K (collectively, the
"Environmental Reports");

               (f)  The Highridge Partners have provided the Mack-Cali Limited
Partner with the documentation and materials concerning the El Segundo Land that
are set forth on Exhibit K, and such documentation and materials are true copies
of such documentation and materials;

               (g)  To the knowledge of the Highridge Partners, (i) there are no
notices, suits, investigations or judgments relating to any violations
(including, without limitation, Environmental Laws, as defined in paragraph (k)
of this Exhibit H, of any laws, ordinances or regulations affecting the El
Segundo Land, (ii) no agency, board, bureau, commission, department, office or
body of any municipal, county, state or federal governmental unit, or any
subdivision thereof, having, asserting or acquiring jurisdiction over all or any
part of the El Segundo Land or the management, operation, use or improvement
thereof (collectively, the "GOVERNMENTAL AUTHORITIES") is contemplating the
issuance thereof, and (iii) there are no outstanding orders, judgments,
injunctions, decrees, directives or writ of any Governmental Authorities against
or involving the El Segundo Land;

               (h)  To the knowledge of the Highridge Partners, there are no
recorded leases (except as disclosed on the Title Report and Survey) or
unrecorded leases of any portion of the El Segundo Land;

               (i)  To the knowledge of the Highridge Partners, the Investment
Entity that will own the El Segundo Land (and/or the Partnership) has, or will
be able to obtain, all permits, licenses and approvals of all Governmental
Authorities (as defined in paragraph (g) of this Exhibit H) as are necessary to
develop the El Segundo Land with an office building as contemplated by the
Approved Development Plan with respect to the El Segundo Land that is described
in Exhibit C;

               (j)  Except as disclosed on Exhibit G or in the Environmental
Reports, and to the knowledge of the Highridge Partners:

                    (i)  There are no Contaminants (as defined in paragraph (k)
of this Exhibit H) on, under, at, emanating from or affecting the El Segundo
Land, except those in compliance with all applicable Environmental Laws (as
defined in paragraph (k) of this Exhibit H);

                    (ii) Neither any of the Highridge Partners or their
Affiliates  nor any current occupant, nor any prior owner or occupant, of the El
Segundo Land has received any Notice (as defined in paragraph (k) of this
Exhibit H) or advice from any Governmental Authority (as defined in paragraph
(g) of this Exhibit H) or any other third party with respect to Contaminants on,
under, at, emanating from or affecting the El Segundo Land, and no Contaminants
have been Discharged (as defined in this Exhibit H) which would allow a
Governmental Authority to demand that a cleanup be undertaken;


                                         H-3
<PAGE>

                    (iii)     No portion of the El Segundo Land has ever been
used by any of the Highridge Partners or their Affiliates or any former owner or
current or former occupant to generate, manufacture, refine, produce, treat,
store, handle, dispose of, transfer or process Contaminants, whether or not any
of those parties has received Notice or advice from any Governmental Authority
or any other third party with respect thereto;

                    (iv) None of the Highridge Partners or their Affiliates has
transported any Contaminants, and no current or former occupant or former owner
has transported any Contaminants, from the El Segundo Land to another location
which was not done in compliance with all applicable Environmental Laws;

                    (v)  No Section 104(e) informational request has been
received by any of the Highridge Partners or their Affiliates that has been
issued pursuant to CERCLA (as defined in this Exhibit H);

                    (vi) There is no asbestos or asbestos containing material in
any friable state or otherwise in violation of Environmental Laws on the El
Segundo Land;

                    (vii)     There are no transformers and capacitators
containing polychlorinated biphenyls ("PCBS"), or any "PCB Items," as defined in
40 C.F.R. Section 761.3, located on or affecting the El Segundo Land (or if
present, they are present in compliance with all Environmental Laws);

                    (viii)    There are no above ground storage tanks or
Underground Storage Tanks (as defined in this Exhibit H) at the El Segundo Land,
regardless of whether such tanks are regulated tanks or not;

                    (ix) All pre-existing above ground storage tanks and
Underground Storage Tanks at the El Segundo Land have been removed and their
contents disposed of in accordance with and pursuant to Environmental Laws;

                    (x)  The El Segundo Land has not been used as a transfer
station, incinerator, resource or recovery facility, landfill or other similar
facility, for receiving or treating, storing or disposing of Contaminants,
garbage and refuse, and other discarded materials resulting from, without
limitation, industrial, commercial, agricultural, domestic or community
activities, including, without limitation, sanitary, hazardous, medical, special
or other waste or as a sanitary landfill facility as defined in 42 U.S.C.
Section 6903(26);

                    (xi) The Highridge Partners and each occupant of the El
Segundo Land have all environmental certificates, licenses and permits
("PERMITS") required to operate the El Segundo Land and there is no violation of
any statute, ordinance, rule, regulation, order, code, directive or requirement,
including, without limitation, Environmental Laws, with respect to any Permit,
nor any pending application for any Permit;

                    (xii)     The El Segundo Land is not subject to any
statutory land use regulation, including, without limitation, wetlands
regulations, administered by the United


                                         H-3
<PAGE>

States of America, Army Corps of Engineers, the U.S. Environmental Protection
Agency or any other Governmental Authority;

                    (xiii)    Except as provided in the Title Report and Survey
or in the Environmental Reports, there are no federal or state liens as referred
to under CERCLA or Cal. Water Code Section 13305, Cal. Health & Safety Code
Section 25365.6, or any other applicable Environmental Laws that have attached
to the El Segundo Land;

                    (xiv)     The El Segundo Land is in compliance with the
warning requirements and discharge prohibitions of the California Safe Drinking
Water and Toxic Enforcement Act of 1986 ("Proposition 65"), Cal. Health & Safety
Code Section 25249.5 ET SEQ.;

                    (xv) None of the Highridge Partners or their Affiliates has
engaged in or has permitted any occupant to engage in any activity on the El
Segundo Land in violation of Environmental Laws; and

                    (xvi)     The El Segundo Land is in material compliance with
Environmental Laws; and

               (k)  The following terms shall have the following meanings when
used in this Exhibit H:

                    (i)  "Contaminants" shall include, without limitation, any
regulated substance, toxic substance, hazardous substance, hazardous waste,
pollution, pollutant or contaminant, as defined or referred to in the California
Hazardous Substance Account Act (Health & Safety Code Section 25300 et seq.);
Chapter 6.5 of Division 20 of the Health and Safety Code (Section 25100 et
seq.), entitled "Hazardous Waste Control," the Oil Spill Prevention and Response
Act (Government Code Section 8574.1 et seq. and Public Resources Code
Sections 13000 et seq.); the Porter-Cologne Water Quality Control Act (Water
Code Sections 8750 et seq.); the California Clean Air Act (Health & Safety Code
Sections 39000 et seq.); Chapter 6.95 of Division 20 of the Health and Safety
Code (Sections 25500 et seq.), entitled "Hazardous Materials Release Response
Plans and Inventory," Proposition 65, as defined above, the "Tanks Laws" as
defined below; the Resource Conservation and Recovery Act, AS AMENDED, 42 U.S.C.
Section 6901 ET SEQ.; the Comprehensive Environmental Response, Compensation and
Liability Act, AS AMENDED, 42 U.S.C. Section 9601 ET SEQ. ("CERCLA"); the Water
Pollution and Control Act, 33 U.S.C. Section 1251 ET SEQ.; together with any
amendments thereto, regulations promulgated thereunder and all substitutions
thereof, as well as words of similar purport or meaning referred to in any other
applicable federal, state, county or municipal environmental statute, ordinance,
code, rule or regulation, including, without limitation, lead-based paint,
radon, asbestos, polychlorinated biphenyls, urea formaldehyde and petroleum
products and petroleum-based derivatives.  Where a statute, ordinance, code,
rule or regulation defines any of these terms more broadly than another, the
broader definition shall apply.

                    (ii) "Discharge" shall mean the releasing, spilling,
leaking, leaching, disposing, pumping, pouring, emitting, emptying, treating or
dumping of Contaminants at,


                                         H-4
<PAGE>

into, onto or migrating from or onto the El Segundo Land, regardless of whether
the result of an intentional or unintentional action or omission.

                    (iii)     "Environmental Documents" shall mean all
environmental documentation in the possession or under the control of Seller
concerning the El Segundo Land, or its environs, including without limitation,
all sampling plans, cleanup plans, preliminary assessment plans and reports,
site investigation plans and reports, remedial investigation plans and reports,
remedial action plans and reports, or the equivalent, sampling results, sampling
result reports, data, diagrams, charts, maps, analysis, conclusions, quality
assurance/quality control documentation, correspondence to or from any
Governmental Authority, submissions to any Governmental Authority and
directives, orders, approvals and disapprovals issued by any Governmental
Authority.

                    (iv) "Environmental Laws" shall mean each and every
applicable federal, state, county or municipal statute, ordinance, rule,
regulation, order, code, directive or requirement, together with all successor
statutes, ordinances, rules, regulations, orders, codes, directives or
requirements, of any Governmental Authority in any way related to Contaminants.

                    (v)  "Governmental Authority" is defined in paragraph (g) of
this Exhibit H.

                    (vi) "Notice" shall mean, in addition to its ordinary
meaning, any written communication of any nature, whether in the form of
correspondence, memoranda, order, directive or otherwise.

                    (vii)     "Tank Laws" shall mean Cal. Health & Safety Code
Section 25280 ET SEQ., the federal underground storage tank law (Subtitle I) of
the Resource Conservation and Recovery Act, AS AMENDED, 42 U.S.C. Section 6901
ET SEQ., and any other applicable state, county or municipal statute, ordinance,
code, rule or regulation applicable to underground or above ground tanks,
together with any amendments thereto, regulations promulgated thereunder, and
all substitutions thereof, and any successor legislation and regulations.

                    (viii)    "Underground Storage Tank" shall mean each and
every "underground storage tank," whether or not subject to the Tank Laws, as
well as the "monitoring system," the "leak detection system," the "discharge
detection system" and the "tank system" associated with the "underground storage
tank," as those terms are defined by the Tank Laws.


                                         H-5
<PAGE>

                                      EXHIBIT I

                               [INTENTIONALLY OMITTED]




















                                         I-1
<PAGE>

                                      EXHIBIT J

                              PROCEDURES FOR SUPERVISING
                          EMPLOYEE AND AFFILIATE COMPLIANCE 



     THE HIGHRIDGE PARTNERS SHALL BE RESPONSIBLE FOR THE FOLLOWING IN CONNECTION
     WITH THE WORK TO BE PERFORMED FOR THE PARTNERSHIP AND THE INVESTMENT
     ENTITIES BY AFFILIATES OF THE HIGHRIDGE PARTNERS AND THEIR EMPLOYEES:

     1.  JOHN S. LONG ("LONG"), EUGENE S. ROSENFELD ("ESR") AND/OR STEVEN A.
BERLINGER ("SAB"), OR AN OFFICER OF HIGHRIDGE PARTNERS APPOINTED BY THEM SHALL,
ON A MONTHLY BASIS, REVIEW THE BUDGETS, CASH FLOW SUMMARIES, LEASING SUMMARIES
(OR STATUS REPORTS) AND CONSTRUCTION OR DEVELOPMENT STATUS REPORTS AND GENERALLY
CONDUCT MONTHLY (OR MORE FREQUENTLY AS REQUIRED) MEETINGS WITH ALL HIGHRIDGE
PARTNERS' AND THEIR AFFILIATES' SUPERVISORY EMPLOYEES (JACK MAHONEY AND KEN
WHITE UNLESS AND UNTIL CHANGED BY THE HIGHRIDGE PARTNERS UPON NOTICE TO THE
MACK-CALI LIMITED PARTNER) WORKING ON THE PROPERTIES TO ASCERTAIN THE STATUS OF
THE PROPERTIES AND LONG, ESR AND/OR SAB SHALL PROVIDE DIRECTION AND GUIDANCE TO
SUCH EMPLOYEES AS REQUIRED FROM TIME TO TIME IN CONNECTION WITH THE PROPERTIES
AND INVESTMENTS.

     2.  LONG, ESR AND/OR SAB SHALL CAUSE TO BE FURNISHED TO EACH SUCH
SUPERVISORY EMPLOYEE AND AFFILIATE A COPY OF EACH APPROVED DEVELOPMENT PLAN AND
APPROVED BUDGET AND A LIST OF THE ACTIONS THAT REQUIRE THE CONSENT OF THE
MACK-CALI PARTNERS UNDER THIS AGREEMENT (INCLUDING ANY APPROVED LEASING
PARAMETERS) AND PERIODICALLY PROVIDE EACH SUCH SUPERVISORY EMPLOYEE AND
AFFILIATE WITH A LIST OF THE CHANGES IN THE APPROVED DEVELOPMENT PLAN AND/OR
APPROVED BUDGETS THAT HAVE BEEN APPROVED BY THE PARTNERS FROM TIME TO TIME, AND,
UPON ANY OF LONG, ESR AND/OR SAB HAVING ACTUAL KNOWLEDGE OF ANY ACT OF ANY
EMPLOYEE OF THE HIGHRIDGE PARTNERS OR THEIR AFFILIATES, OR ANY ACT OF AN
AFFILIATE OF THE HIGHRIDGE PARTNERS THAT WOULD BE A BREACH OF THIS AGREEMENT
(INCLUDING A MAJOR DEFAULT) IF THE ACTION WERE TAKEN BY A HIGHRIDGE PARTNER, OR
ACTUAL KNOWLEDGE OF ANY MATERIAL DEVIATION FROM ANY APPROVED DEVELOPMENT PLAN,
APPROVED BUDGET OR CONTRACT PREVIOUSLY APPROVED BY THE PARTNERS OR BY THE
MACK-CALI LIMITED PARTNER, THE HIGHRIDGE PARTNERS SHALL GIVE PROMPT NOTICE
THEREOF TO THE MACK-CALI LIMITED PARTNER.

     3.  IF LONG, ESR OR SAB SUSPECTS THAT AN EMPLOYEE OF THE HIGHRIDGE PARTNERS
OR THEIR AFFILIATES, OR THAT AN AFFILIATE OF HIGHRIDGE PARTNERS, HAS COMMITTED
FRAUD OR MISAPPROPRIATION OF FUNDS, THE HIGHRIDGE PARTNERS SHALL NOTIFY THE
MARK-CALI LIMITED PARTNER PROMPTLY, AND THE HIGHRIDGE GP AND THE PARTNERS SHALL
REASONABLY APPROVE THE COURSE OF ACTION TO BE TAKEN IN RESPONSE THERETO.

     4.  COPIES OF WRITTEN SUMMARIES OR STATUS OR PERFORMANCE REPORTS, ANY OTHER
INFORMATION REASONABLY REQUESTED BY THE MACK-CALI LIMITED PARTNER, AND NOTICE OF
ANY MATERIAL DEVIATION FROM AN APPROVED DEVELOPMENT PLAN, APPROVED BUDGET OR
CONTRACT APPROVED BY THE PARTNERS OR BY THE MACK-CALI LIMITED PARTNER THAT IS
RECEIVED FROM EMPLOYEES OF THE HIGHRIDGE PARTNERS OR THEIR AFFILIATES SHALL BE
FURNISHED BY THE HIGHRIDGE PARTNERS TO THE MACK-CALI LIMITED PARTNER PROMPTLY
AFTER BEING SUBMITTED TO ANY OF LONG, ESR AND/OR SAB.


                                         J-1
<PAGE>

                                      EXHIBIT K

                              DUE DILIGENCE MATERIALS 
                       PROVIDED BY THE HIGHRIDGE PARTNERS TO 
                           THE MACK-CALI LIMITED PARTNER 
                           CONCERNING THE EL SEGUNDO LAND
                                          
                                 [BEGINS NEXT PAGE]














                                         K-1
<PAGE>

                                     EXHIBIT L
                                          
                            OPERATING APPROVAL STANDARDS
                                          
                                 [BEGINS NEXT PAGE]
























                                         L-1
<PAGE>

                                      EXHIBIT M

                         HIGHRIDGE REIMBURSEMENT SCHEDULE FOR
               THE EL SEGUNDO LAND AND SUMMIT RIDGE (CARROLL MESA) LAND

                                  [BEGINS NEXT PAGE]

























                                         M-1
<PAGE>


                                  TABLE OF CONTENTS


ARTICLE 1 GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1  Formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.2  Name of Partnership. . . . . . . . . . . . . . . . . . . . . . . .   2
     1.3  Certificate of Limited Partnership . . . . . . . . . . . . . . . .   2
     1.4  Principal Office, Resident Agent and Registered Office . . . . . .   2
     1.5  Purposes of Partnership. . . . . . . . . . . . . . . . . . . . . .   3
     1.6  Funding Proportions; Residual Percentages. . . . . . . . . . . . .   3
     1.7  Other Qualifications . . . . . . . . . . . . . . . . . . . . . . .   4
     1.8  Term of Partnership. . . . . . . . . . . . . . . . . . . . . . . .   4
     1.9  Title to Partnership Property. . . . . . . . . . . . . . . . . . .   4
     1.10 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.11 Authorized Acts. . . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.12 Authorized Representatives . . . . . . . . . . . . . . . . . . . .   4

ARTICLE 2 CAPITAL CONTRIBUTIONS AND ADDITIONAL CONTRIBUTIONS . . . . . . . .   5
     2.1  Capital Contributions. . . . . . . . . . . . . . . . . . . . . . .   5
     2.2  Third-Party Loans and Additional Capital Contributions and Capital
          Calls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     2.3  Use of Capital Contributions; Certain Expenses . . . . . . . . . .  10
     2.4  Partner Loans. . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     2.5  Contributions to Investment Entities . . . . . . . . . . . . . . .  11

ARTICLE 3 INCOME TAX ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . .  12
     3.1  Establishment and Maintenance of Capital Accounts; 
          Partnership Status . . . . . . . . . . . . . . . . . . . . . . . .  12
     3.2  Profit and Loss Allocations. . . . . . . . . . . . . . . . . . . .  12
     3.3  Allocations of Gain or Loss on Disposition . . . . . . . . . . . .  13
     3.4  Minimum Gain Chargeback and Qualified Income Offset. . . . . . . .  15
     3.5  Other Tax Allocation Provisions. . . . . . . . . . . . . . . . . .  15
     3.6  Intent of Allocations. . . . . . . . . . . . . . . . . . . . . . .  19
     3.7  Basis Elections. . . . . . . . . . . . . . . . . . . . . . . . . .  19
     3.8  General Allocation Rules . . . . . . . . . . . . . . . . . . . . .  20
     3.9  Sharing of Partnership Nonrecourse Debt and Nonrecourse Deductions  20
     3.10 Adjustment of Gross Asset Value. . . . . . . . . . . . . . . . . .  20
     3.11 Tax Payment Loans. . . . . . . . . . . . . . . . . . . . . . . . .  21
     3.12 Approvals Relating to Tax Issues.. . . . . . . . . . . . . . . . .  23

ARTICLE 4 LOAN REPAYMENTS AND DISTRIBUTIONS. . . . . . . . . . . . . . . . .  23
     4.1  Net Available Cash, Net Mortgage Proceeds and Capital Receipts
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
     4.2  Proceeds and Distributions in Liquidation. . . . . . . . . . . . .  24
     4.3  General Distribution Rules . . . . . . . . . . . . . . . . . . . .  25
     4.4  Source of Distributions. . . . . . . . . . . . . . . . . . . . . .  26


                                         -i-
<PAGE>

ARTICLE 5 MANAGEMENT; DUTIES AND POWERS OF THE MANAGING GENERAL PARTNER;
          RIGHTS AND DUTIES OF MANAGING GENERAL PARTNER. . . . . . . . . . .  26
     5.1  Management of Business; Officers; Partner Obligations; Reimbursements;
          Major Decisions; Retained Approvals. . . . . . . . . . . . . . . .  26
     5.2  Affiliate Transactions; Exclusivity; Mack-Cali  Property Management
          Option.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
     5.3  Reporting Requirements; Financials; Meetings . . . . . . . . . . .  41
     5.4  Tax Matters Partner; Tax Returns . . . . . . . . . . . . . . . . .  43
     5.5  Indemnification and Liability of the Partners. . . . . . . . . . .  44
     5.6  Control Change . . . . . . . . . . . . . . . . . . . . . . . . . .  46
     5.7  Limitation of Liability. . . . . . . . . . . . . . . . . . . . . .  46
     5.8  No Priorities. . . . . . . . . . . . . . . . . . . . . . . . . . .  46
     5.9  Determination Date for Indemnity Payments, Removal Defaults,
          Performance Defaults and Major Defaults; Arbitration . . . . . . .  46
     5.10 Deadlock/Partner Sale Rights . . . . . . . . . . . . . . . . . . .  48
          5.11 Property Deadlock.. . . . . . . . . . . . . . . . . . . . . .  52

ARTICLE 6 BOOKS, RECORDS AND BANK ACCOUNTS . . . . . . . . . . . . . . . . .  55
     6.1  Books and Records. . . . . . . . . . . . . . . . . . . . . . . . .  55
     6.2  Bank Accounts. . . . . . . . . . . . . . . . . . . . . . . . . . .  56

ARTICLE 7 TRANSFERS OF PARTNERSHIP INTERESTS . . . . . . . . . . . . . . . .  56
     7.1  Restrictions on Transfer . . . . . . . . . . . . . . . . . . . . .  56
     7.2  No Tag-Along Rights. . . . . . . . . . . . . . . . . . . . . . . .  57
     7.3  Bankruptcy or Dissolution of Partners. . . . . . . . . . . . . . .  57
     7.4  Substitution of Partner. . . . . . . . . . . . . . . . . . . . . .  57
     7.5  Additional Transfer Restrictions . . . . . . . . . . . . . . . . .  58
     7.6  Transfer Indemnification and Contribution Provisions . . . . . . .  59
     7.7  Basis for Restrictions and Remedies. . . . . . . . . . . . . . . .  60
     7.8  Representations, Warranties and Covenants. . . . . . . . . . . . .  60
     7.9  Terminated Partner; Removal Defaults; Performance Defaults; Purchase
          Rights; Control Change Notices . . . . . . . . . . . . . . . . . .  63

ARTICLE 8 TERM, DISSOLUTION AND TERMINATION. . . . . . . . . . . . . . . . .  67
     8.1  Events of Dissolution. . . . . . . . . . . . . . . . . . . . . . .  67
     8.2  Limitation on Dissolution. . . . . . . . . . . . . . . . . . . . .  67
     8.3  Liquidation and Winding Up . . . . . . . . . . . . . . . . . . . .  67
     8.4  Reconstitution After Bankruptcy or Dissolution of a General Partner 70
     8.5  Distribution Upon Dissolution and Capital Account Adjustments. . .  71
     8.6  Compliance with Timing Requirements of Treasury Regulations. . . .  71

ARTICLE 9 MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . .  71
     9.1  Other Interests. . . . . . . . . . . . . . . . . . . . . . . . . .  71
     9.2  Damages; Certain Cure Rights; Offset . . . . . . . . . . . . . . .  72
     9.3  No Agency. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
     9.4  Governing Law. . . . . . . . . . . . . . . . . . . . . . . . . . .  73


                                         -ii-
<PAGE>

     9.5  Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
     9.6  Pronouns and Plurals . . . . . . . . . . . . . . . . . . . . . . .  74
     9.7  Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  74
     9.8  Severability . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
     9.9  Titles and Captions. . . . . . . . . . . . . . . . . . . . . . . .  75
     9.10 Agreement in Counterparts. . . . . . . . . . . . . . . . . . . . .  75
     9.11 Binding Agreement. . . . . . . . . . . . . . . . . . . . . . . . .  75
     9.12 Further Assurances . . . . . . . . . . . . . . . . . . . . . . . .  75
     9.13 Waiver of Partition. . . . . . . . . . . . . . . . . . . . . . . .  75
     9.14 Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . .  76
     9.15 Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
     9.16 No Drafting Presumption. . . . . . . . . . . . . . . . . . . . . .  76
     9.17 No Third-Party Beneficiaries . . . . . . . . . . . . . . . . . . .  76

EXHIBIT A      DEFINED TERMS . . . . . . . . . . . . . . . . . . . . . . . . A-1

EXHIBIT B      FUNDING PROPORTIONS, SECTION 2.1.1 CONTRIBUTIONS AND RESIDUAL
               PERCENTAGES . . . . . . . . . . . . . . . . . . . . . . . . . B-1

EXHIBIT C      INITIAL DEVELOPMENT PLAN. . . . . . . . . . . . . . . . . . . C-1

EXHIBIT D-1    LEGAL DESCRIPTION OF THE EL SEGUNDO LAND. . . . . . . . . . D-1-1

EXHIBIT D-2    LEGAL DESCRIPTION OF THE SUMMIT RIDGE (CARROLL MESA) LAND . . D-2

EXHIBIT E      OWNERSHIP OF PARTNERS . . . . . . . . . . . . . . . . . . . . E-1

EXHIBIT F      [Intentionally Omitted] . . . . . . . . . . . . . . . . . . . F-1

EXHIBIT G      CLAIMS AND ENCUMBRANCES ON EL SEGUNDO LAND
               (including environmental) . . . . . . . . . . . . . . . . . . G-1

EXHIBIT H      EL SEGUNDO LAND REPRESENTATIONS AND WARRANTIES. . . . . . . . H-1

EXHIBIT I      [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . I-1

EXHIBIT J      PROCEDURES FOR SUPERVISING EMPLOYEE
               AND AFFILIATE COMPLIANCE  . . . . . . . . . . . . . . . . . . J-1

EXHIBIT K      DUE DILIGENCE MATERIALS PROVIDED BY THE HIGHRIDGE PARTNERS TO 
               THE MACK-CALI LIMITED PARTNER CONCERNING THE EL SEGUNDO LAND. K-1

EXHIBIT L      OPERATING APPROVAL STANDARDS. . . . . . . . . . . . . . . . . L-1

EXHIBIT M      HIGHRIDGE REIMBURSEMENT SCHEDULE FOR THE EL SEGUNDO LAND AND
               SUMMIT RIDGE (CARROLL MESA) LAND. . . . . . . . . . . . . . . M-1



                                        -iii-

<PAGE>

                                                                    Exhibit 10.2

                 SUPPLEMENT TO AGREEMENT OF LIMITED PARTNERSHIP
                                       OF
                        HPMC DEVELOPMENT PARTNERS, L.P.,
                         A DELAWARE LIMITED PARTNERSHIP

         This SUPPLEMENT TO AGREEMENT OF LIMITED PARTNERSHIP (the "Supplement")
is made and entered into as of the 23rd day of April, 1998, by and among HCG
DEVELOPMENT, L.L.C., a Delaware limited liability company, as the managing
general partner ("Highridge GP" or for so long as Highridge GP is a General
Partner, the "Managing General Partner"), SUMMIT PARTNERS I, L.L.C., a Delaware
limited liability company, as a limited partner (the "Highridge Limited
Partner"), and MACK-CALI CALIFORNIA DEVELOPMENT ASSOCIATES L.P., a California
limited partnership, as a limited partner (the "Mack-Cali Limited Partner" and
together with the Highridge Limited Partner, the "Limited Partners"), with
reference to the following:

                                    RECITALS

         A. The Managing General Partner and the Limited Partners have entered
into that certain Agreement of Limited Partnership of HPMC Development Partners,
L.P., a Delaware limited partnership dated as of April 23, 1998 (the
"Agreement").

         B. The Managing General Partner and the Limited Partners desire that
this Supplement be an integral part of the Agreement and modify the terms of the
Agreement to the extent set forth herein.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein (the receipt and sufficiency of which hereby are acknowledged
by each party hereto), the parties hereto, intending to be legally bound, agree
as follows:

         1. Each of the Development Plans (including the budgets contained
therein) for the El Segundo Land and the Summit Ridge Land are hereby Approved
by the Partners and shall constitute the Approved Development Plans with respect
thereto.

         2. Notwithstanding anything to the contrary contained in the Agreement:

                  (a) The Mack-Cali Limited Partner's Section 2.1.1 Contribution
(Cash) identified on Exhibit B of the Agreement shall be reduced to $5,000,000,
which sum shall be held as reserves until such time as the Mack-Cali Partners
have contributed the maximum amount of their Required Additional Capital
Contributions pursuant to Section 2(b) of this Supplement, provided, that the
Managing General Partner is 


                                      (1)
<PAGE>

authorized to make expenditures of the Mack-Cali Limited Partner's Section 2.1.1
Contributions (Cash) in accordance with the Approved Development Plans (and the
budgets contained therein), as needed from time to time to the extent the
Mack-Cali Partners fail to make any Required Additional Capital Contributions
pursuant to and in accordance with Section 2(b) of this Supplement (and the use
of such funds by the Managing General Partner shall not relieve the Mack-Cali
Partners of their obligations to make Required Additional Capital Contributions
under Section 2(b) of this Supplement).

                  (b) In addition to the Required Additional Capital
Contributions of the Mack-Cali Partners under Section 2.1.2 of the Agreement,
the Mack-Cali Partners shall make additional Capital Contributions to the
Partnership from time to time in accordance with a disbursement request in the
form of Exhibit N attached hereto (a "Disbursement Request") delivered by the
Managing General Partner, in order to fund the operations of the Partnership and
the Investment Entities in accordance with the Approved Development Plans
(including the budgets contained therein). The Managing General Partner may
issue Disbursement Requests from time to time in amounts then required within
the Approved Development Plans (and the budgets contained therein). The
Mack-Cali Partners shall make the Required Additional Contributions set forth in
each Disbursement Request within ten (10) days after the date on which the
Disbursement Request with respect thereto has been received (or deemed received
under Section 9.5 of the Agreement). To the extent a Disbursement Request
identifies progress payments or final payments with respect to construction of
improvements at the El Segundo Land or the Summit Ridge Land, the Disbursement
Request shall include a certificate from an engineer or architect licensed to
practice and qualified to do business in California (and acceptable to the
applicable construction lender) as to the accuracy of progress (or final)
payments sought in accordance with standard AIA guidelines and procedures. The
Partners shall use reasonable efforts to engage such engineer or architect,
subject to the reasonable Approval of the Partners as to who is engaged, as soon
as is practicable hereafter. In no event shall the Required Additional Capital
Contributions required under this Section 2(b) exceed $14,200,000, subject to
reduction pursuant to Section 3 of this Supplement.

                  (c) If the Mack-Cali Partners fail to contribute their
Required Additional Capital Contributions to the Partnership pursuant to Section
2(b) of this Supplement, the Highridge Partners shall have all of the remedies
available under Article II of the Agreement, and, in addition, such failure
shall result in the Mack-Cali Partners becoming Terminated Partners to the
extent provided in Section 2.2.2 of the Agreement.

         3. Section 2.1.2.2 of the Agreement is hereby deleted. Notwithstanding
the other provisions of this Agreement, to the extent the amount of the
construction financing for the El Segundo Land and the Summit Ridge Land exceeds
$27,200,000, the maximum amount of Required Additional Capital Contributions of
the Mack-Cali Partners pursuant to Section 2(b) of this Supplement shall be
reduced by the difference between (a) the amount of such construction financing
(up to a maximum of $28,200,000), less (b) $27,200,000. In no event shall the
reduction of the maximum 


                                      (2)
<PAGE>

amount of the Mack-Cali Partners' Required Additional Capital Contributions
under Section 2(b) of this Supplement exceed $1,000,000.

         4. Section 2.1.2.3 of the Agreement is modified such that the maximum
amount of the contributions from the Mack-Cali Partners thereunder shall be
limited to the maximum amount of Required Additional Contributions then
remaining with respect to the Mack-Cali Limited Partner (and not $4,000,000),
and (b) the last sentence of Section 2.1.2.3 of the Agreement is deleted, such
that there is no limit on the Capital Equalization Distribution thereunder. To
the extent the Mack-Cali Limited Partner has made contributions to the
Partnership under Section 2.1.2.3 of the Agreement, such contributions shall be
treated as Required Additional Capital Contributions made by it under Section
2.1.2.3 of the Agreement.

         5. If any third party financing (other than Third Party Mezzanine
Financing governed by Section 2.1.2.4 of the Agreement, which provision shall
remain in full force and effect) is obtained for the development of the El
Segundo Land and/or the Summit Ridge Land, or refinancing in replacement
thereof, and proceeds therefrom may be used to distribute to the Partners, such
proceeds shall be made to the Highridge Partners as a Capital Equalization
Distribution as provided in Section 2.1.2.3 of the Agreement prior to making any
distributions to the Partners under Article 4. Distributions to the Highridge
Partners pursuant to this Section 5 of this Supplement shall be deemed to have
been made pursuant to Section 4.1.1(c) of the Agreement in repayment of the
Highridge Partners' Invested Capital.

         6. Except as otherwise defined herein, capitalized terms in this
Supplement shall have the meaning given such terms in the Agreement.

         7. Except as expressly supplemented or modified herein, all terms and
conditions of the Agreement shall remain in full force and effect.

         8. This Supplement may be executed in several counterparts, each of
which shall be deemed an original, but all of which shall constitute one and the
same instrument when taken together. In addition, this Supplement may contain
more than one counterpart of the signature page and this Supplement may be
executed by the affixing of the signatures of each of the Partners to one or
more of such counterpart signature page. A Partner shall be deemed to have
executed and delivered this Supplement if and when it has manually executed a
counterpart signature page to this Supplement, transmitted a copy of the same by
facsimile to the other Partners at such other Partner's facsimile number set
forth in the Agreement, and received a printed confirmation of the successful
receipt thereof by such other Partner. This Supplement shall not be binding on
the Partners hereto unless each Partner shall have executed and delivered a copy
of both the Agreement and this Supplement to the other Partners. If this
Supplement is executed and delivered by facsimile, each Partner who transmits
its signature page for this Supplement by facsimile shall promptly forward a
manually executed signature page to the other 


                                      (3)
<PAGE>

Partner (but a Partner's failure to so promptly shall not affect the validity of
its execution and delivery of this Supplement by facsimile transmission).

         9. This Supplement is executed by the Partners in the interest of time
in order to avoid any delays in amending and restating the Agreement to fully
reflect the provisions of this Supplement. The Partners shall use reasonable
good faith efforts to amend and restate the Agreement in accordance with the
terms of this Supplement as soon as is practicable hereafter.

[Signatures on next page]


                                      (4)
<PAGE>

         IN WITNESS WHEREOF, this Supplement is executed, and is effective for
all purposes, as of the date first set forth above.

                              GENERAL PARTNER

                              HCG DEVELOPMENT, L.L.C.,
                              a Delaware limited liability company

                              By: Highridge Asset Management,
                                  L.L.C., a Delaware limited liability
                                  company, Manager

                                  By: Highridge Management, Inc.,
                                      a California corporation,
                                      Managing Member


                                      By: _____________________________
                                          Name:
                                          Title:

                              LIMITED PARTNERS:

                              SUMMIT PARTNERS I, L.L.C.,
                              a Delaware limited liability company

                              By: Highridge Asset Management,
                                  L.L.C., a Delaware limited liability
                                  company, Manager

                                  By: Highridge Management, Inc.,
                                      a California corporation,
                                      Managing Member


                                      By: _____________________________
                                          Name:
                                          Title:

                              MACK-CALI CALIFORNIA
                              DEVELOPMENT ASSOCIATES L.P.,    
                              a California limited partnership

                              By: Mack-Cali Sub XXI, Inc., a
                                  Delaware corporation, its
                                  general partner


                                  By: _____________________________
                                      Name:
                                      Title:


                                      (5)

<PAGE>

                                                                Exhibit 10.3

                              FIRST AMENDMENT TO
                       AGREEMENT OF LIMITED PARTNERSHIP
                                      OF
                        HPMC DEVELOPMENT PARTNERS, L.P.


     This First Amendment (the "Amendment") is entered into as of October 8, 
1998 and amends that certain Agreement of Limited Partnership of HPMC 
Development Partners, L.P. (the "Partnership"), dated as of April 23, 1998, 
as previously amended by that certain Supplement thereto (the "Supplement") 
dated as of April 23, 1998 (as amended by such Supplement, the "Partnership 
Agreement"). Capitalized terms that are used in this Amendment but that are 
not otherwise defined herein shall have the meanings set forth in the 
Partnership Agreement.

     Now, therefore, for good and valuable consideration, the receipt and 
sufficiency of which hereby are acknowledged by the Partners, the Partners 
hereby agree as follows (with the Partnership Agreement hereby being amended 
to the extent it is inconsistent with the following provisions):

     1.   USE OF RESERVES.  The Partners hereby approve that $4.6 million of 
the $5 million of Mack-Cali Capital Contributions that currently are being 
held as reserves shall be used to balance the Sanwa construction loan for the 
El Segundo Land (in lieu of such amount continuing to be held as reserves by 
the Partnership or the Mack-Cali Partners being required to make Required 
Additional Contributions to fund such balancing requirement).

     2.  CAPITAL EQUALIZATION; MEZZANINE FINANCING.

         (a)  DEFINITION OF "THIRD PARTY MEZZANINE FINANCING." For purposes 
of applying Sections 2.1.2.3 ("Capital Equalization") and 2.1.2.4. 
("Mezzanine Financing") of the Partnership Agreement, the term "conventional 
financing" with respect to a Property (as used in the definition of the term 
"Third-Party Mezzanine Financing") shall be deemed to mean the portion of the 
Partnership's financing with respect to such Property which will cause such 
Property's development costs to be 50% financed with debt.

         (b)  ADDITIONAL TRIGGER DATE FOR CAPITAL EQUALIZATION. 
Notwithstanding the provisions of Sections 2.1.2.3 ("Capital Equalization") 
and 2.1.2.4 ("Mezzanine Financing") of the Partnership Agreement, the Capital 
Equalization Distribution required under Section 2.1.2.3 of the Partnership 
Agreement (and the Required Additional Contributions of the Mack-Cali 
Partners to make such distribution) shall be required upon the earlier to 
occur of (i) the El Segundo Valuation Date (i.e., the $55 million valuation 
for the El Segundo Land occurring as provided in the definition of such term 
contained in the Partnership Agreement) or (ii) the closing of binding loan 
documentation (the "Construction Loan Closings") for the construction  

<PAGE>

financing for both the El Segundo Land and the Summit Ridge Land if the 
aggregate amount permitted to be borrowed by the Partnership and the 
Investment Entities under such financing ("Maximum Permitted Borrowings") 
exceeds $27.2 million (the date on which the Construction Loan Closing has 
occurred for both Properties is referred to as the "Special Financing 
Equalization Date"). The amount of the Capital Equalization Distribution, and 
the amount of the Required Additional Contributions required to be made by 
the Mack-Cali Partners to fund the same on the Special Financing Equalization 
Date, as a result of the Special Financing Equalization Date occurring by 
reason of the circumstances described in preceding clause (ii) shall not 
exceed the lesser of (A) 75% of the aggregate Third Party Mezzanine Financing 
permitted to be borrowed by the Partnership and the Investment Entities under 
the construction financing with respect to which the Construction Loan 
closing has occurred, or (B) the amount necessary to reduce the Invested 
Capital of the Highridge Partners to 20% of the excess of (1) the total 
development costs of $54,411,200 for both Properties, minus (2) the aggregate 
Maximum Permitted Borrowings under the construction financing for both 
Properties.  In addition to a Capital Equalization Distribution being 
required to occur on the Special Financing Equalization Date, a Capital 
Equalization Distribution may also occur under Section 2.1.2.3 of the 
Partnership Agreement (as amended by the Supplement) if the El Segundo 
Valuation Date has occurred.  Notwithstanding anything contained in the 
Partnership Agreement or in this Amendment to the contrary, the maximum 
aggregate Capital Contributions required to be made by the Mack-Cali Partners 
under the Partnership Agreement and this Amendment for all periods (including 
their initial $5 million Capital contribution, the Required Additional 
Contributions to be contributed by the Mack-Cali Partners under this 
Amendment to make the Capital Equalization Distribution upon the occurrence 
of the Special Financing Equalization Date, and all other Required Additional 
contributions required to be made by the Mack-Cali partners under the 
Partnership Agreement) shall not exceed $19,200,000 less one dollar ($1.00) 
for each dollar by which the Maximum Permitted Borrowings exceed $27,200,000 
(up to a maximum $1 million reduction to $18,200,000).

          (c)PREFERRED RETURN/HIGHRIDGE SUBORDINATED RETURN RATES.
Notwithstanding anything in the Partnership Agreement to the contrary, from 
and after the Equalization Date, the annual percentage rate to be used in 
computing (i) the Highridge subordinated Contribution Return, and (ii) the 
Preferred Return on the Required Additional Contributions of the Mack-Cali 
Partners made by the Mack-Cali Partners to make the Capital Equalization 
Distribution under Section 2.1.2.3 of the Partnership Agreement or 
Section2(b) of this Amendment, shall thereafter accrue at an annual rate 
equal to the 30-day LIBOR rate in effect at the close of each calendar 
quarter plus seven-hundred and fifty (750) basis points, cumulative and 
compounded quarterly (the "Adjusted Return Rate") (and adjusted at the close 
of each calendar quarter).  The distributions of the Partnership (A) under 
Section 4.1.1(a) of the Partnership Agreement in repayment of the 
Undistributed Preferred Return of the Mack-Cali Partners that is computed at 
the Adjusted Return Rate and in repayment of the portion thereof that is 
computed at a 10% annual rate, and (B) under Section 4.1.1(c) of the 
Partnership Agreement in repayment of the Invested Capital of the Mack-Cali 
Partners that bears a Preferred Return computed at the Adjusted Return Rate 
and in repayment of the portion thereof that bears a Preferred Return 
computed at a 10% annual rate, shall be deemed



                                       2

<PAGE>

to have been made pro rate in repayment of such amounts under such Section 
4.1.1(a) or Section 4.1.1(c), as applicable, in proportion to the amount 
thereof that is computed at the Adjusted Return Rate and the amount thereof 
computed at a 10% annual rate.

     3. REMAINDER OF PARTNERSHIP AGREEMENT. Except as expressly amended 
herein, all provisions of the Partnership Agreement shall remain in full 
force and effect.

     4. COUNTERPART EXECUTION. This Amendment may be executed in several 
counterparts, each of which shall be deemed an original, but all of which 
shall constitute one and the same instrument when taken together. In 
addition, this Amendment may contain more than one counterpart of the 
signature page and this Amendment may be executed by affixing the signatures 
of each of the Partners to one or more of such counterpart signature pages. A 
Partner shall be deemed to have executed and delivered this Amendment if and 
when it has manually executed a counterpart signature page to this 
Amendment, transmitted a copy of the same by facsimile to each other Partner 
at such other Partner's facsimile number set forth in the Partnership 
Agreement, and received a printed confirmation of the successful receipt 
thereof by such other Partner. This Amendment shall not be binding on the 
Partners hereto unless each Partner shall have executed and delivered a copy 
of this Amendment to the other Partners. If this Amendment is executed and 
delivered by facsimile, each Partner who transmits its signature page for 
this Amendment by facsimile shall promptly forward a manually executed 
signature page to each other Partner (but a Partner's failure to do so 
promptly shall not affect the validity of its execution and delivery of this 
Amendment by facsimile transmission).

     5. CONTINUATION OF BUSINESS. The Partnership hereby is reconstituted and 
its business continued pursuant to the Partnership Agreement, as amended by 
this Amendment.

            [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]






                                      3
<PAGE>

         IN WITNESS WHEREOF, this Supplement is executed, and is effective for
all purposes, as of the date first set forth above.

                              GENERAL PARTNER

                              HCG DEVELOPMENT, L.L.C.,
                              a Delaware limited liability company

                              By: Highridge Asset Management,
                                  L.L.C., a Delaware limited liability
                                  company, Manager

                                  By: Highridge Management, Inc.,
                                      a California corporation,
                                      Managing Member


                                      By: _____________________________
                                          Name:
                                          Title:

                      [SIGNATURES CONTINUED ON NEXT PAGE]



                                        4
<PAGE>

                              LIMITED PARTNERS:

                              SUMMIT PARTNERS I, L.L.C.,
                              a Delaware limited liability company

                              By: Highridge Asset Management,
                                  L.L.C., a Delaware limited liability
                                  company, Manager

                                  By: Highridge Management, Inc.,
                                      a California corporation,
                                      Managing Member


                                      By: _____________________________
                                          Name:
                                          Title:

                              MACK-CALI CALIFORNIA
                              DEVELOPMENT ASSOCIATES L.P.,    
                              a California limited partnership

                              By: Mack-Cali Sub XXI, Inc., a
                                  Delaware corporation, its
                                  general partner


                                  By: _____________________________
                                      Name:
                                      Title:

                              [END OF SIGNATURES]


                                       5



<PAGE>
                                                                  Exhibit 10.4



                           AGREEMENT OF LIMITED PARTNERSHIP
                                         OF
                           HPMC LAVA RIDGE PARTNERS, L.P.
                           A DELAWARE LIMITED PARTNERSHIP
                                          
                       DATED AS OF THE 21ST DAY OF JULY, 1998





     THE INTERESTS ISSUED UNDER THIS AGREEMENT HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR REGISTERED OR
QUALIFIED UNDER THE APPLICABLE STATE SECURITIES LAWS, IN RELIANCE UPON
EXEMPTIONS FROM REGISTRATION AND QUALIFICATION PROVIDED IN THE SECURITIES ACT
AND THE APPLICABLE STATE SECURITIES LAWS, AND MAY NOT BE SOLD OR TRANSFERRED IN
THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND
QUALIFICATION OR REGISTRATION UNDER THE APPLICABLE STATE SECURITIES LAWS, OR AN
OPINION OF COUNSEL SATISFACTORY TO THE ISSUER THAT SUCH REGISTRATION OR
QUALIFICATION IS NOT REQUIRED.

     IN ADDITION, THE INTERESTS ISSUED UNDER THIS AGREEMENT MAY BE SOLD OR
TRANSFERRED ONLY IN COMPLIANCE WITH THE RESTRICTIONS ON TRANSFER SET FORTH
HEREIN.


                                           
<PAGE>

                           AGREEMENT OF LIMITED PARTNERSHIP
                                          OF
                            HPMC LAVA RIDGE PARTNERS, L.P.
                            A DELAWARE LIMITED PARTNERSHIP



     THIS AGREEMENT OF LIMITED PARTNERSHIP ("Agreement") is made and entered
into as of the 21st day of July, 1998, by and among HCG DEVELOPMENT, L.L.C., a
Delaware limited liability company, as the managing general partner ("Highridge
GP" or for so long as Highridge GP is a General Partner, the "Managing General
Partner"), SUMMIT PARTNERS I, L.L.C., a Delaware limited liability company, as a
limited partner (the "Highridge Limited Partner"), and  MACK-CALI CALIFORNIA
DEVELOPMENT ASSOCIATES L.P., a California limited partnership, as a limited
partner (the "Mack-Cali Limited Partner" and together with the Highridge Limited
Partner, the "Limited Partners"), with reference to the following:

                                       RECITALS


     A.   The Managing General Partner and the Limited Partners desire to form a
limited partnership pursuant to the provisions of the Revised Uniform Limited
Partnership Act of the State of Delaware, Delaware Code, Title 6 Sections
117-101, ET SEQ., as amended from time to time, and to constitute themselves as
HPMC LAVA RIDGE PARTNERS, L.P., a Delaware limited partnership (the
"Partnership") for the purposes set forth in Sections 1.5 and 1.11, and on the
terms and conditions set forth in this Agreement.

     B.   The Managing General Partner and each of the Limited Partners desires
to make its respective capital contributions to the Partnership as described in
this Agreement and to be admitted as a Partner of the Partnership.

     C.   In order to effect the foregoing, the parties hereto desire to enter
into this Agreement as set forth herein.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein (the receipt and sufficiency of which hereby are acknowledged
by each party hereto), the parties hereto, intending to be legally bound, agree
as follows:



                                           
<PAGE>

                                     ARTICLE 1
                                          
                                 GENERAL PROVISIONS

     1.1  FORMATION. The Managing General Partner, as the general partner, and
the Highridge Limited Partner and the Mack-Cali Limited Partner, as limited
partners, hereby form the Partnership as a limited partnership pursuant to the
terms of this Agreement and the Act.  This Agreement shall constitute the
agreement of limited partnership among the Partners.  All capitalized terms used
and not otherwise defined herein shall have the meanings set forth in Section
1.10 and Exhibit A.  The Partners further agree to take such other actions as
may from time to time be necessary or appropriate under the laws of the States
of Delaware and California with respect to the formation, operation,
qualification and continued good standing of the Partnership as a limited
partnership in such jurisdictions.

     1.2  NAME OF PARTNERSHIP.  Subject to Section 1.3., the name of the
Partnership shall be "HPMC LAVA RIDGE PARTNERS, L.P.," or such other name as may
be reasonably Approved by the General Partners from time to time.

     1.3  CERTIFICATE OF LIMITED PARTNERSHIP.  The Managing General Partner
shall execute the Certificate of Limited Partnership (the "CERTIFICATE") for the
Partnership, and the Managing General Partner shall (i) cause the Certificate to
be filed in the Office of the Secretary of State of the State of Delaware as
required by the Act, and (ii) cause the Partnership to take any other steps that
are necessary for the Partnership to own the Investments and operate the
Properties and to conduct the Partnership's business in Delaware and California,
promptly after the date hereof.  The Certificate shall be amended whenever, and
within the time periods, required by the Act, or otherwise when reasonably
Approved by the Partners.

     1.4  PRINCIPAL OFFICE, RESIDENT AGENT AND REGISTERED OFFICE.  The principal
office of the Partnership shall be located at 300 Continental Boulevard, Suite
360, El Segundo, California 90245, or at such other place or places as from time
to time be reasonably Approved by the General Partners; PROVIDED, HOWEVER, that
the Partnership shall at all times maintain a registered agent and an office in
the State of Delaware and the State of California.  The name and address of the
registered agent for service of process on the Partnership in the State of
Delaware is Paracorp Incorporated, 15 East North Street, Dover, Delaware 19901. 
The address of the registered office of the Partnership in the State of Delaware
is c/o Paracorp Incorporated, 15 East North Street, Dover, Delaware 19901.  The
name and address of the registered agent for service of process on the
Partnership in the State of California is Mark Abramson, Esq., 300 Continental
Boulevard, Suite 360, El Segundo, California  90245.  The address of the
registered office of the Partnership in the State of California shall be the
principal office of the Partnership.  Such principal office, registered agent or
registered office may be changed upon the reasonable Approval of the General
Partners, so long as in accordance with the Act; concurrently with any such
change, written notice thereof shall be



                                          2
<PAGE>

given to each Partner.  Promptly following execution and delivery of this
Agreement, and filing of the Certificate with the Secretary of State of the
State of Delaware, the Managing General Partner shall cause the Partnership to
register as a foreign limited partnership in the Office of the Secretary of
State of California and in such other jurisdictions as are necessary or
desirable.  Such registration shall be amended by the General Partners whenever
required by the laws of each such jurisdiction.

     1.5  PURPOSES OF PARTNERSHIP.  The purposes of the Partnership shall be:

          1.5.1     Subject to the other provisions of this Agreement, to
acquire the Investments for investment purposes, and to own, hold, rehabilitate,
develop with office buildings, manage, maintain, entitle, plat, subdivide,
operate, finance, refinance, rezone, improve, lease, and to sell, exchange or
otherwise dispose of the Lava Ridge Land (more particularly described on Exhibit
D), and any other property Approved by the Partners (as improved from time to
time, the "Properties") and interests therein, whether directly or through
Investment Entities formed by the Partnership as provided in Section 1.5.2.

          1.5.2     Subject to the other provisions of this Agreement, to
acquire any other assets that are incidental to the foregoing which have been
Approved by the Partners (the Properties and other assets owned by the
Partnership, including interests in Entities owning Properties or interests
therein, are referred to as the "Investments").  The Partnership shall, unless
otherwise Approved by the Partners, cause each Property to be acquired,
developed and owned by a separate limited liability company or limited
partnership formed by the Partnership for the purpose of acquiring the same or
interests therein (each such partnership or limited liability company, together
with any Entity in which such limited liability company or partnership owns a
direct or indirect equity ownership interest, an "Investment Entity"), and the
Partnership may form one or more other subsidiaries to serve as a general
partner of any limited partnership or as a member of any limited liability
company formed for Partnership purposes on terms reasonably Approved by the
Partners.  The Partnership may take all actions required or permitted to be
taken by it under each Investment Entity Agreement (such actions to be required
to be Approved by the Partners to the extent required by this Agreement).  The
Partnership may engage in any and all other general business activities
incidental or reasonably related to the foregoing.

     1.6  FUNDING PROPORTIONS; RESIDUAL PERCENTAGES

          1.6.1 The respective Funding Proportions and Residual Percentages in
the Partnership of the Partners are set forth on Exhibit B.

          1.6.2 Unless the context otherwise clearly indicates, the term
"interest" or "interests" in the Partnership shall include both General Partner
interests and Limited Partner interests.  A Partner's interest in the
Partnership shall mean and include its share of the capital of the Partnership,
its share of the Profits and Losses, its share of Gain or Loss on Disposition 


                                          3
<PAGE>

and other tax items of the Partnership, its share of the distributions of the
Partnership, its Capital Account, and its other rights and obligations, all as
determined under this Agreement.

     1.7  OTHER QUALIFICATIONS.  At the expense of the Partnership, the General
Partners shall cause the Partnership to be qualified to do business in each
jurisdiction in which such qualification becomes necessary (including
California), on or before the date on which such qualification becomes
necessary.

     1.8  TERM OF PARTNERSHIP.  The term of the Partnership commenced as of the
date of filing the Certificate and shall continue until the Partnership shall be
dissolved, liquidated and terminated pursuant to the provisions of Article 8.

     1.9  TITLE TO PARTNERSHIP PROPERTY.  Unless otherwise Approved by the
Partners, legal title to all of the Partnership's assets, including the
Properties and the Investments, shall be held by the Partnership, either
directly or through Investment Entities formed by the Partnership to acquire
such assets.  It is expressly understood and agreed that the manner of holding
title to Partnership property is solely for the convenience of the Partners;
accordingly, legal representatives, beneficiaries, distributees, partners,
shareholders, members, successors or assigns of any Partner shall have no right,
title or interest in or to any such Partnership property by reason of the manner
in which title is held, but all such property shall be treated as Partnership
property subject to the terms of this Agreement.

     1.10 DEFINITIONS.  Capitalized terms that are used in this Agreement shall
have the meanings set forth on Exhibit A.

     1.11 AUTHORIZED ACTS.  In furtherance of its purposes, and subject to the
provisions of this Agreement, the Partnership and its General Partners shall
have the full power and authority to take in the Partnership's name all actions
that are necessary, useful, appropriate or helpful in connection therewith,
including the actions described in Section 5.1.1 hereof.


                                          4
<PAGE>

     1.12 AUTHORIZED REPRESENTATIVES.  The "Authorized Representatives" of a
Partner that is not a natural person shall be those representatives designated
by notice to all other Partners by such Partner from time to time to represent
such Partner in connection with the Partnership, unless and until replaced or
removed by notice from such Partner to all Partners.  The written statements and
representations of an Authorized Representative for a Partner that is not a
natural Person shall be the only authorized statements and representations of
such Partner with respect to the matters covered by this Agreement.  The initial
Authorized Representatives are (i) John S. Long, Eugene S. Rosenfeld, Steven A.
Berlinger and Jack Mahoney for the Highridge Partners, and (ii) Thomas Rizk,
Mitchell E. Hersh, Roger W. Thomas and Barry Lefkowitz for the Mack-Cali
Partners.  The written statement or representation of any one Authorized
Representative of such Partner shall be sufficient to bind such Partner with
respect to all matters pertaining to the Partnership.  The term "Approved by" or
"Consented to by" or "Consent of" or "satisfactory to" with respect to a Partner
that is not a natural Person means a decision or action which has been consented
to in writing by the Authorized Representative of such Partner (or orally to the
extent that the Partners have adopted a course of conduct pursuant to which
certain Approvals, other than those described below in this Section 1.12, are
granted orally), and with respect to a Partner who is an individual, means a
decision or action which has been consented to in writing by such individual. 
In order for a decision or action to be "Approved by the Partners" (or any
variation thereof), the decision or action must be Approved by at least one
Authorized Representative of each Partner who then continues to have Approval
rights with respect to such action or decision under this Agreement.  In order
for a decision or action to be "Approved by the General Partners" (or any
variation thereof), the decision or action must be Approved by at least one
Authorized Representative of each then General Partner.  Notwithstanding
anything in this Agreement to the contrary (including any course of conduct
regarding oral Approvals that has been adopted by the Partners), the following
Approvals must be given in writing (to the extent Approval is required therefor)
in order to be effective: (1) acquisition by the Partnership or an Investment
Entity of a Property other than the Lava Ridge Land (the acquisition of which
hereby is Approved by the Partners  pursuant to the Approved Development Plan
with respect thereto that is described on Exhibit C), (2) any borrowing by the
Partnership or an Investment Entity, (3) the sale or other disposition of any
Investment or Property, (4) adopting or materially modifying a Development Plan
for any Property or any Approved Budget contained therein, including any
Approved Overhead Budget contained therein or Approved by the Partners in
connection therewith (the Partners hereby confirm that the initial Approved
Development Plan, Approved Budget, and Approved Overhead Budget for the Lava
Ridge Land are described on Exhibit C), (5) liquidating the Partnership or any
Investment Entity and (6) issuing a Funding Notice as provided in Section
2.1.2.1(ii).  Section 5.1.6.2 sets forth the procedure for obtaining Approvals.



                                          5
<PAGE>

                                      ARTICLE 2
                                           
                                CAPITAL CONTRIBUTIONS
                             AND ADDITIONAL CONTRIBUTIONS

     2.1  CAPITAL CONTRIBUTIONS.

          2.1.1     INITIAL CAPITAL CONTRIBUTIONS.  (a) Each Partner has
contributed the amount in cash to the capital of the Partnership that is set
forth for such Partner on Exhibit B as its Section 2.1.1 Contribution (Cash).

     (b)  The Partnership shall contribute the Section 2.1.1 Contributions (less
Partnership expenses paid, or reserves funded, therefrom as set forth in the
Approved Budget or otherwise Approved by the Partners) to Lava Ridge Associates,
L.L.C. (a Delaware limited liability company that is owned by the Partnership
and is the Investment Entity that will acquire and develop the Lava Ridge Land)
in order to acquire the Lava Ridge Land.  For convenience, the foregoing
contributions to the Partnership and subsequent contribution by the Partnership
to such Investment Entity may be accomplished by a direct payment of cash by the
Partners to such Investment Entity (and such direct payment hereby is Approved
by the Partners).

          2.1.2     ADDITIONAL CAPITAL CONTRIBUTIONS.  

               2.1.2.1   GENERAL RULES.  Except as provided in this Section
2.1.2, no Partner shall be required to make any Capital Contributions other than
those described in Sections 2.1.1, 3.5.4 and 4.3.2.  Each Partner shall be
required to make additional Capital Contributions to the Partnership if any
General Partner or the Mack-Cali Limited Partner gives notice to all Partners (a
"Funding Notice") that meets the requirements of this Section 2.1.2.  If a
Funding Notice is properly issued, the amount of additional Capital
Contributions so required from each Partner ("Required Additional
Contributions") shall be the amount described below with respect to such Partner
in this Section 2.1.2.1, and the Due Date for such Required Additional
Contributions shall be the date on which all conditions precedent thereto have
occurred (as set forth in the Development Plans or otherwise Approved by the
Partners).  The amount and due date for such Required Additional Contributions
shall be specified in such Funding Notice (the collective dollar obligation of
the Partners with respect thereto for such Funding Notice is referred to as a
"Shortfall").  A Funding Notice may be issued only with respect to one or more
of the following events (and will be effective to the extent described below):

          (i)  Except as specifically Approved in writing by the Partners after
     the execution of this Agreement, no Funding Notice may be issued to a
     Partner except to the extent that the amounts of Required Capital
     Contributions of such Partner described


                                          6
<PAGE>

     therein are required to be made by such Partner under this clause (i),
     clause (ii) or clause (iii) of this Section 2.1.2.1, and/or Section 3.5.4
     or 4.3.2;

          (ii) Except as provided in clause (i) above or clause (iii) below of
     this Section 2.1.2.1., the Partners shall make additional Capital
     Contributions to the Partnership, pro rata in proportion to their
     respective Funding Proportions, from time to time in accordance with a
     disbursement request in the form of Exhibit N attached hereto (a
     "Disbursement Request") delivered by the Managing General Partner (or the
     Mack-Cali Limited Partner if the Managing General Partner shall fail to do
     so after a request to do so is received from the Mack-Cali Limited
     Partner), in order to fund the operations of the Partnership and the
     Investment Entities in accordance with the Approved Development Plans
     (including the budgets contained therein) or as otherwise Approved by the
     Partners.  The Managing General Partner (or the Mack-Cali Limited Partner
     if the Managing General Partner shall fail to do so after a request to do
     so is received from the Mack-Cali Limited Partner) may issue one or more
     Disbursement Requests from time to time to the extent Capital Contributions
     are then due under the Approved Development Plans (and the budgets
     contained therein).  Each Partner shall make the Required Additional
     Contributions set forth in each Disbursement Request within ten (10) days
     after the date on which the Disbursement Request with respect thereto has
     been received (or deemed received under Section 9.5 of the Agreement).  To
     the extent a Disbursement Request identifies progress payments or final
     payments with respect to construction of improvements at any of the
     Properties, the Disbursement Request shall include a certificate from an
     engineer or architect licensed to practice and qualified to do business in
     California (and acceptable to the applicable construction lender) as to the
     accuracy of progress (or final) payments sought in accordance with standard
     AIA guidelines and procedures.  The Partners shall use reasonable efforts
     to engage such engineer or architect, subject to the reasonable Approval of
     the Partners as to who is engaged, as soon as is practicable hereafter.  In
     no event shall the aggregate Required Additional Capital Contributions
     required from all of the Partners under this Section 2.1.2.1(ii) exceed $4
     million (limited to $800,000 from the Highridge Group and $3,200,000 from
     the Mack-Cali Group).  A Disbursement Request shall constitute a Funding
     Notice for purposes of this Agreement; or

          (iii)     Notwithstanding any provision of this Agreement to the
     contrary, if and to the extent that distributions have been made to the
     Partners pursuant to Section 4.1.1 (d), such distributions shall be
     recontributed to satisfy any Shortfall of the Partnership (in the ratio
     distributed to the Partners under such Section) in response to a Funding
     Notice concerning such Shortfall (such recontributions to constitute
     Required Additional Contributions for purposes of this Agreement).

          Except as provided below, no Partner shall be required to issue a
     Funding


                                          7
<PAGE>

     Notice under any circumstances.  Notwithstanding the preceding sentence,
     the Managing General Partner shall be required to issue a Funding Notice
     within five (5) days after receiving notice from the Mack-Cali Limited
     Partner that a Funding Notice is required in order to fund the amounts
     described in this Section 2.1.2 that are then due and payable (the
     Mack-Cali Limited Partner shall not be required to issue such a notice
     under any circumstances).  A Funding Notice may be issued by the Mack-Cali
     Limited Partner if the Managing General Partner shall fail to do so within
     such 5-day period.  Each Funding Notice shall describe the Shortfall and
     set forth the Required Additional Contribution of each Partner as
     determined pursuant to this Section 2.1.2.  If a Funding Notice is properly
     issued as provided above in this Section 2.1.2, each Partner shall
     contribute its Required Additional Contributions on or before the Due Date
     therefor under Section 2.2.1.  The provisions of this Section 2.1.2 which
     provide that a Funding Notice must be validly issued before additional
     Capital Contributions are required to be made shall not affect in any way
     the obligation of any Partner to pay to the Partnership or to the other
     Partners, as the case may be, any amount required to be paid by such
     Partner to them under this Agreement (it being agreed that the issuance of
     a Funding Notice shall not be required in order for the Partnership or any
     Partner to enforce any such payment obligation).

               2.1.2.2   MEZZANINE FINANCING.  The Mack-Cali Limited Partner
shall have the right, upon notice to the Highridge Partners but subject to the
reasonable Approval of the Managing General Partner, to cause the Partnership to
obtain Third Party Mezzanine Financing (with respect to which no Partner or its
Affiliates shall be required to provide any personal guaranties of repayment
without such Partner's Approval).

          2.1.3     CONTRIBUTIONS OF SERVICES.  The Residual Percentage of any
Partner in excess of such Partner's Funding Proportion shall be deemed to be a
profits interest that has been received in exchange for services rendered or to
be rendered by such Partner to or for the benefit of the Partnership (such
excess Residual Percentage having no currently predictable distributions or
value).

     2.2  THIRD-PARTY LOANS AND ADDITIONAL CAPITAL CONTRIBUTIONS AND CAPITAL
CALLS.

          2.2.1     If a Funding Notice is properly given by a Partner pursuant
to Section 2.1.2, each Partner shall have the obligation, subject to the
limitations contained in Section 2.1.2, to contribute its Required Additional
Contributions within five (5) days (or ten (10) days in the case of Capital
Contributions described in Section 2.1.2.1(ii)) after the later to occur of
(i) the date on which the Funding Notice with respect thereto has been received
(or deemed received under Section 9.5) or (ii) the required funding date that is
set forth in the Funding Notice (the expiration of such five or ten day period
is referred to as the "Due Date").  There shall be a cure period of five (5)
days after the Due Date for each Partner to contribute its Required Additional
Contribution, as provided in Section 2.2.2.


                                          8
<PAGE>

          2.2.2     If any Partner fails to contribute the full amount of its
Required Additional Contributions within five (5) days (or ten (10) days in the
case of Capital Contributions described in Section 2.1.2.1(ii)) after the Due
Date thereof (such Partner and any other Partner in such Partner's Partner Group
thereupon being collectively referred to as the "Defaulting Partner"), then, as
the exclusive remedies of the Partnership and the other Partners who are not
Defaulting Partners (the "Non-Defaulting Partners"), the Non-Defaulting Partner
shall have the following remedies, exercisable by notice from the Non-Defaulting
Partners to the Defaulting Partner: (i) to elect to treat the Defaulting Partner
as a Terminated Partner under Section 7.9 (and pursue the remedies under this
Agreement that apply after a Partner becomes a Terminated Partner), (ii) to
cause the Partnership to sue the Defaulting Partner for actual (and not
consequential) damages that shall be limited to the portion of the Defaulting
Partner's share of the Shortfall Disbursement that was not received timely, plus
interest at the rate equal to the lesser of (x) fifteen percent (15%) per annum
or (y) the maximum interest rate permitted by law, and plus the costs of
collection, and (iii) to elect to lend (or to cause the Non-Defaulting Partners'
Affiliates to lend), to the Defaulting Partner or to the Partnership, as
Approved by the Non-Defaulting Partners, the amount of such Capital Contribution
that was not made timely by the Defaulting Partner.  The remedies described in
clauses (i), (ii) and (iii) of this Section 2.2.2 shall be cumulative, and all
or any of them may be elected and apply simultaneously, except as provided in
Section 2.2.2.1.

               2.2.2.1   If the Non-Defaulting Partners choose to lend (or to
cause their Affiliates to lend) the amount of the Required Additional
Contribution not made timely by the Defaulting Partner, the loan shall be a
recourse loan to the Partnership or to the Defaulting Partner, as elected by the
Non-Defaulting Partners, and shall bear interest, compounded monthly, at the
rate equal to the lesser of (i) the maximum interest rate permitted by law or
(ii) fifteen percent (15%) per annum, from the date such loan is made until the
date of repayment.  Such loan shall be deemed to have been made to the
Defaulting Partner (and not to the Partnership) only if the Non-Defaulting
Partners (or the Non-Defaulting Partners' Affiliate) has paid such amount
directly to the Partnership and specifies, by notice to the Partners given
within two (2) Business Days after such funding, that the loan is being made to
the Defaulting Partner, in which case (1) said amount shall be deemed to have
been contributed to the Partnership by the Defaulting Partner for purposes of
determining the Capital Contributions made by the Defaulting Partner, its
Invested Capital and the Preferred Return thereon, (2) the remedies against the
Defaulting Partner described in Sections 2.2.2(ii) and 9.2 shall not apply with
respect to said amount, and (3) the Defaulting Partner shall still be deemed to
be a Terminated Partner for purposes of applying the remedies contained in
Section 7.9 and for all other provisions of this Agreement.  Repayment of any
such loan to the Defaulting Partner shall be effected by the General Partners
being required to cause the Partnership to pay directly to the Non-Defaulting
Partners all distributions otherwise payable to the Defaulting Partner under
this Agreement as and when payable, instead of making such distributions to the
Defaulting Partner (with such distributions being deemed for all purposes to
have been made to the Defaulting Partner and then paid by the Defaulting Partner
to the Non-Defaulting Partners or their Affiliates, as the case may be). 
Repayment of any such loan to the Partnership shall be made as provided in
Section 4.1 and Section 4.2.2.  Any payments made


                                          9
<PAGE>

with respect to loans described in this Section 2.2.2.1 shall first be deemed to
pay accrued but unpaid interest, and then be deemed to repay principal.

               2.2.2.2   If none of the Partners timely contributes any portion
of its
Required Capital Contribution pursuant to a Funding Notice, there shall be no
remedy of any Partner or the Partnership against any other Partner by reason of
the failure to make such Required Capital Contributions.

          2.2.3     Except as otherwise specifically set forth in this
Agreement, no Partner shall have the right (i) to withdraw such Partner's
Capital Contribution or to demand or receive the return of a Capital
Contribution or to make any claim to any portion of Partnership capital or (ii)
to demand or receive property other than cash in return for a Capital
Contribution or to receive any cash in return for a Capital Contribution.

          2.2.4     Except as expressly provided in this Agreement, no Partner
shall have personal liability to make any Capital Contribution.

          2.2.5     A deficit Capital Account of a Partner (or of a partner,
member or venturer of a Partner) shall not be deemed to be a liability of such
Partner (or of such partner, member or venturer) or an asset or property of the
Partnership (or any Partner).  Furthermore, no Partner shall have any obligation
to the Partnership, any other Partner or any creditor of any of them or of any
Investment Entity for any deficit balance in such Partner's Capital Account.

     2.3  USE OF CAPITAL CONTRIBUTIONS; CERTAIN EXPENSES.  The initial cash
Capital Contributions made pursuant to Section 2.1.1(a) shall be used as
follows:  (i) to pay unpaid third-party formation and start-up costs of the
Partnership and the Investment Entities, the acquisition costs of the
Investments (including the costs of entering into and performing under the
Acquisition Documents) that have been Approved by the Partners, and any
reimbursements (limited to each Partner's cost) included in the Initial Approved
Budget contained in the Approved Development Plan attached as Exhibit C with
respect to due diligence, formation and start-up expenditures; including
attorneys' fees and expenses and formation and qualification costs (and to
reimburse each Partner, limited to such Partner's cost, for portions thereof
already paid by such Partner or its Affiliates), such amounts (a) to include the
Partners' attorneys fees and expenses in connection with the preparation of this
Agreement, and the documents contemplated hereby, and (b) to be paid or
reimbursed to the Partners by the Partnership out of such Capital Contributions
promptly after invoices for such amounts are submitted to the Partnership and to
each Partner, and (ii) the balance, if any, shall be held in reserves pending
expenditure as set forth in an Approved Budget (or otherwise as Approved by the
Partners) or as permitted without such Approval under Section 5.1.3.2, Section
5.1.3.3 or Section 5.1.3.4.  The Partners hereby confirm that the expense
reimbursements of the Highridge Partners that are described on Exhibit M have
been Approved by the Partners.


                                          10
<PAGE>

     2.4  PARTNER LOANS.  If available cash flow, borrowings and Capital
Contributions are insufficient for the reasonable requirements of the
Partnership, the Mack-Cali Limited Partner if it is not a Terminated Partner,
shall have the unilateral right (but not the obligation) to finance (directly,
or through an Affiliate) any Partnership expenditure at an interest rate equal
to the lesser of (i) ten percent (10%) per annum or (ii) the maximum rate
permitted by law, provided, however, that prior to making any loan pursuant to
this Section 2.4(a), the Mack-Cali Limited Partner shall, unless a Highridge
Partner is a Terminated Partner, give at least ten (10) Business Days prior
written notice to the Highridge GP and offer to the Highridge Partners the
opportunity to participate (in proportion to the Partners' Funding Proportions)
in such loan.  Any notice from the Mack-Cali Limited Partner pursuant to this
Section 2.4(a) shall specify the amount of such loan, the share thereof which
the Highridge Partners may lend and the earliest date on which such loan is to
be made to the Partnership (which date shall not, except in case of Emergency,
be earlier than ten (10) Business Days after such notice is received by the
Highridge GP).  The Highridge Partners may participate in any loan pursuant to
this Section 2.4(a), if at all, only by delivery to the Mack-Cali Limited
Partner, not later than the date specified in such notice, of its share of such
loan.  All loans described in this Section 2.4(a) shall be repayable as provided
for in Sections 4.1 and 4.2.



     2.5  CONTRIBUTIONS TO INVESTMENT ENTITIES.  Notwithstanding anything in
this Agreement to the contrary, to the extent that the reasonable needs of the
business of any Investment Entity require funding of expenditures in excess of
the reserves, other assets and available borrowings of the Partnership and such
Investment Entity that have been Approved by the Partners (whether in an
Approved Budget, Approved Development Plan or otherwise) for the payment thereof
other than with respect to a Property that is the subject of an Abandonment
Decision, (a) the Mack-Cali Limited Partner may (but shall not be required to)
elect, by notice to the Managing General Partner, or (b) the Managing General
Partner may (but shall not be required to) elect, by notice to the Mack-Cali
Limited Partner, to cause the Partnership to retain (in lieu of distributing the
same under Article 4) otherwise distributable Net Available Cash, Net Mortgage
Proceeds and Capital Receipts from any source (including other Properties and
Investment Entities) and cause the Partnership to contribute such amounts to
such Investment Entity for use by it for the payment of such expenditures;
PROVIDED, HOWEVER, that the maximum aggregate amount of cash that is retained
pursuant to all notices given pursuant to this Section 2.5 with respect to any
Investment Entity shall not exceed twenty-five percent (25%) of the Capital
Contributions made by the Partnership to such Investment Entity for all periods
(regardless of whether distributed back to the Partnership), other than Capital
Contributions made by the Partnership to such Investment Entity pursuant to this
Section 2.5.


                                      ARTICLE 3

                                INCOME TAX ALLOCATIONS


                                          11
<PAGE>

     3.1  ESTABLISHMENT AND MAINTENANCE OF CAPITAL ACCOUNTS; PARTNERSHIP STATUS.
The General Partners shall establish and cause the Partnership to maintain a
single book Capital Account for each Partner which reflects each Partner's
Capital Contributions to the Partnership and a single tax capital account which
reflects the adjusted tax basis of the Capital Contributions contributed by each
Partner to the Partnership.  Each Capital Account and tax capital account shall
also reflect the allocations and distributions made pursuant to Articles 3 and 4
and otherwise be adjusted in accordance with Code Section 704 and the principles
set forth in Regulations Sections 1.704-l(b) and 1.704-2.  In applying such
principles, any expenditures of the Partnership described in Code Section
705(a)(2)(B) or treated as Code Section 705(a)(2)(B) expenditures pursuant to
Regulations Section 1.704-l(b)(2)(iv)(i) shall be allocated among the Partners
in the same manner as such expenditures would be allocated among the Partners
pursuant to this Article 3 if such expenditures were treated as additional items
of deduction of the Partnership (as computed for book purposes) that were
recognized and required to be allocated among the Partners pursuant to this
Article 3 with respect to the Partnership Accounting Year in which such
expenditures were made.  The Partners intend that the Partnership be treated as
a partnership for tax purposes.

     3.2  PROFIT AND LOSS ALLOCATIONS.  Except as expressly provided to the
contrary in this Section 3.2, for purposes of determining Capital Account
balances under this Section 3.2, (a) Profit and Loss with respect to any
Partnership Accounting Year shall be allocated prior to reducing Capital
Accounts by any distributions with respect to such Partnership Accounting Year,
and (b) Section 3.2 shall be applied before applying Section 3.3.

          3.2.1     LOSS FROM OPERATIONS.  For each Partnership Accounting Year
from the Agreement Date until the termination of the Partnership, Loss from
Partnership operations shall be allocated among the Partners in the following
order of priority:

               3.2.1.1   First, among the Partners as necessary to cause each
Partner's Capital Account balance to equal the sum of (i) the amount of Net
Available Cash that would be distributed to such Partner pursuant to Section 4.1
with respect to such Partnership Accounting Year if the Partnership distributed
all of the Net Available Cash for such Partnership Accounting Year without any
portion thereof being withheld as reserves or reinvested, plus (ii) the amount
that would be distributed to such Partner pursuant to Sections 4.1 and 4.2.3 if
the Partnership (a) distributed all Capital Receipts and Net Mortgage Proceeds
received with respect to such Partnership Accounting Year (without any portion
thereof being retained as reserves or reinvested) pursuant to Section 4.1 and
(b) then sold all of its remaining assets (including its interest in every
Investment Entity) for their adjusted tax basis (or adjusted book basis in the
case of Revalued Property) and distributed the proceeds therefrom and its
reserves (net of debt repayments) to the Partners pursuant to Sections 4.1 and
4.2.3; and 

               3.2.1.2   Second, after giving effect to the allocations made
pursuant to


                                          12
<PAGE>

Sections 3.2.1.1 among the Partners in proportion to the Partners' respective
Funding Proportions.

          3.2.2     PROFIT FROM OPERATIONS.  For purposes of applying Section
3.2.1 and this Section 3.2.2, a Partner's Capital Account balance shall be
deemed to be increased by such Partner's share of Partnership Minimum Gain and
Partner Nonrecourse Debt Minimum Gain determined as of the end of such
Partnership Accounting Year.  For each Partnership Accounting Year, Profit from
Partnership operations shall be allocated among the Partners as necessary to
cause the Capital Account balance of each Partner to equal the sum of (i) the
amount of Net Available Cash that would be distributed to such Partner under
Section 4.1 with respect to such Partnership Accounting Year (if no portion
thereof were withheld as reserves or reinvested), plus (ii) the amount that
would be distributed to such Partner pursuant to Sections 4.1 and 4.2.3 if the
Partnership (a) distributed all Capital Receipts and Net Mortgage Proceeds
received with respect to such Partnership Accounting Year (without any portion
thereof being retained as reserves or reinvested) pursuant to Section 4.1, and
(b) then sold all of its remaining assets (including its interest in every
Investment Entity) for their adjusted tax basis (or adjusted book basis in the
case of Revalued Property), and distributed the proceeds therefrom and its
reserves (net of debt repayments) to the Partners pursuant to Sections 4.1 and
4.2.3. 

     3.3  ALLOCATIONS OF GAIN OR LOSS ON DISPOSITION.  For purposes of
determining Capital Account balances under this Section 3.3, Gain or Loss on
Disposition shall be allocated prior to reducing Capital Accounts by the
distributions of Capital Receipts from the Disposition.

          3.3.1     GAIN ON DISPOSITION.  Gain on Disposition shall be allocated
to the Partners in the following order of priority:

               3.3.1.1   First, to the Partners in proportion to, and to the
extent of, any deficit balances in their respective Capital Accounts until all
such Capital Accounts have been restored to zero; and 

               3.3.1.2   Second, after giving effect to the allocations made
pursuant to Section 3.3.1.1, among the Partners as necessary to cause the
Capital Account balance of each Partner to equal the sum of (i) the amount that
would be distributed to such Partner pursuant to Sections 4.1 if the Partnership
then distributed all of the proceeds received by the Partnership with respect to
such Disposition (net of debt repayments) and did not establish reserves or
reinvest any of the proceeds of such Disposition, plus (ii) the amount that
would be distributed to such Partner pursuant to Sections 4.1 and 4.2.3 if the
Partnership then sold all of its assets remaining after such Disposition and the
distribution of the proceeds of such Disposition for their adjusted tax basis
(or adjusted book basis in the case of Revalued Property) and distributed the
proceeds therefrom and its reserves (net of debt repayments) to the Partners
pursuant to Sections 4.1 and 4.2.3. 


                                          13
<PAGE>

          3.3.2     LOSS ON DISPOSITION.  Loss on Disposition shall be allocated
to the Partners in the following order of priority:

               3.3.2.1   First, among the Partners as necessary to cause each
Partner's Capital Account balance to equal the sum of (i) the amount that would
be distributed to such Partner pursuant to Section 4.1 with respect to such
Disposition if the Partnership then distributed all of the proceeds received by
the Partnership with respect to such Disposition under Section 4.1. (net of debt
repayments) and did not establish reserves or reinvest any of the proceeds of
such Disposition, plus (ii) the amount that would be distributed to such Partner
pursuant to Sections 4.1 and 4.2.3 if the Partnership then sold all of its
assets remaining after such Disposition and the distribution for the proceeds of
such Disposition for their adjusted tax basis (or adjusted book basis in the
case of Revalued Property) and distributed the proceeds therefrom and its
reserves (net of debt repayments) to the Partners pursuant to Sections 4.1 and
4.2.3; and 

               3.3.2.2   Second, after giving effect to the allocations made
pursuant to Section 3.3.2.1, any balance among the Partners in proportion to the
Partners' respective Funding Proportions.

          3.3.3     RULES OF CONSTRUCTION.

               3.3.3.1        For purposes of applying Section 3.3 as a result
                              of a
Disposition, a Partner's Capital Account balance shall be deemed to be increased
by such Partner's share of Partnership Minimum Gain and Partner Nonrecourse Debt
Minimum Gain remaining after such Disposition as determined under the
Regulations under Code Section 704(b).

               3.3.2.2   Except as is otherwise provided in this Article 3, an
allocation  of Partnership taxable income or taxable loss to a Partner shall be
treated as an allocation to such Partner of the same share of each item of
income, gain, loss and deduction that has been taken into account in computing
such taxable income or taxable loss.

     3.4  MINIMUM GAIN CHARGEBACK AND QUALIFIED INCOME OFFSET.

          3.4.1     NO IMPERMISSIBLE DEFICITS.  Notwithstanding any other
provision of this Agreement, taxable loss or items of deduction (as computed for
book purposes)  shall not be allocated to a Partner to the extent that the
Partner has or would have, as a result of such allocations, an Adjusted Capital
Account Deficit.  Any taxable loss or items of deduction (as computed for book
purposes) which otherwise would be allocated to a Partner, but which cannot be
allocated to such Partner because of the application of the immediately
preceding sentence, shall instead be allocated to the other Partners.


                                          14
<PAGE>

          3.4.2     QUALIFIED INCOME OFFSET.  In order to comply with the
"qualified income offset" requirement of the Regulations under Code Section
704(b), and notwithstanding any other provision of this Agreement to the
contrary except Section 3.4.3 below, in the event a Partner for any reason
(whether or not expected) has an Adjusted Capital Account Deficit, items of
Profits and Gain on Disposition (consisting of a pro rata portion of each item
of income comprising the Partnership's Profits and Gain on Disposition,
including both gross income and gain for the taxable year, all as computed for
book purposes) shall be allocated to such Partner in an amount and manner
sufficient to eliminate as quickly as possible the Adjusted Capital Account
Deficit.

          3.4.3     MINIMUM GAIN CHARGEBACK. In order to comply with the
"minimum gain chargeback" requirements of Regulations Sections 1.704-2(f)(1) and
1.704-2(i)(4), and notwithstanding any other provision of this Agreement to the
contrary, in the event there is a net decrease in a Partner's share of
Partnership Minimum Gain and/or Partner Nonrecourse Debt Minimum Gain during a
Partnership taxable year, such Partner shall be allocated items of income and
gain (as computed for book purposes) for that year (and if necessary, other
years) as required by and in accordance with Regulations Sections 1.704-2(f)(1)
and 1.704-2(i)(4) before any other allocation is made.

     3.5  OTHER TAX ALLOCATION PROVISIONS.

          3.5.1     INCOME CHARACTERIZATION.  For purposes of determining the
character (as ordinary income or capital gain) of any Gain on Disposition
allocated to the Partners pursuant to Section 3.3 or 3.4, such portion of the
taxable income of the Partnership allocated pursuant to such Sections which is
treated as ordinary income attributable to the recapture of depreciation shall,
to the extent possible, be allocated among the Partners in the proportion which
(i) the amount of depreciation previously allocated to each Partner bears to
(ii) the total of such depreciation allocated to all Partners.  This Section
3.5.1 shall not alter the amount of allocations among the Partners pursuant to
Section 3.3 but merely the character of income so allocated.

          3.5.2     CHANGE IN RESIDUAL PERCENTAGES. Notwithstanding the
foregoing, in the event any Partner's Residual Percentage changes during a
fiscal year for any reason, including the Transfer of any interest in the
Partnership or an adjustment of the Partners' Residual Percentages hereunder,
the allocations of taxable income or loss under this Article 3, and
distributions, shall be adjusted as necessary to reflect the varying interests
of the Partners during such year using an interim closing of the books method as
of the date of such change, or such other method as is reasonably Approved by
the Partners.


                                          15
<PAGE>

          3.5.3     MANDATORY ALLOCATIONS -- SECTION 704(C) AND PARTNER
NONRECOURSE DEBT.

               3.5.3.1   Notwithstanding the foregoing, (i) in the event Code
Section 704(c) or Code Section 704(c) principles applicable under Regulations
Section 1.704-1(b)(2)(iv) require allocations of income or loss of the
Partnership in a manner different than that set forth above, the provisions of
Code Section 704(c) and the Regulations thereunder shall control such
allocations among the Partners; and (ii) all tax deductions and taxable losses
of the Partnership (as computed for book purposes) that, pursuant to Regulations
Section 1.704-2(i), are attributable to a Partner Nonrecourse Debt for which a
Partner (or a Person related to such Partner under Treasury Regulations Section
1.752-4(b)) bears the economic risk of loss (within the meaning of Regulations
Section 1.752-2) shall be allocated to such Partner as required by Regulations
Section 1.704-2(c).

               3.5.3.2   Any item of income, gain, loss and deduction with
respect to any property (other than cash) that has been contributed by a Partner
to the capital of the Partnership or which has been revalued for Capital Account
purposes pursuant to Regulations Section 1.704-1(b)(2)(iv) and which is required
or permitted to be allocated to such Partner for income tax purposes under Code
Section 704(c) so as to take into account the variation between the tax basis of
such property and its fair market value at the time of its contribution or at
the time of its revaluation for Capital Account purposes pursuant to Regulations
Section 1.704-1(b)(2)(iv) (such contributed or revalued property is referred to
as "Revalued Property") shall be allocated solely for income tax purposes in the
manner so required or permitted under Code Section 704(c) using the "traditional
method" described in Regulations Section 1.704-3(b) (or any successor
Regulation), such allocations to be made as shall be reasonably Approved by the
Partners; PROVIDED, HOWEVER, that curative allocations consisting solely of the
special allocation of gain or loss upon the sale or other disposition of the
Revalued Property shall be made in accordance with Regulations Section
1.704-3(c) to the extent necessary to eliminate any disparity, to the extent
possible, between the Partners' Capital Accounts and tax capital accounts
attributable to such property; and FURTHER PROVIDED, however, that any other
method allowable under applicable Regulations may be used in connection with any
Revalued Property as shall be Approved by the Mack-Cali Limited Partner. 
Allocations under this Section 3.5.3.2 are solely for purposes of federal, state
and local taxes and shall not affect, or in any way be taken into account in
computing, any Partner's Capital Account or share of Profit, Loss, Gain or Loss
on Disposition or other items or distributions under any provision of this
Agreement.  Notwithstanding anything in this Agreement to the contrary, the
determination of Gross Asset Value for any asset contributed to the Partnership,
distributed from the Partnership or any other Revalued Property shall be as
Approved by the Partners or as determined pursuant to the appraisal proceeding
described in Section 5.10(iii).

          3.5.4     GUARANTEE OF PARTNERSHIP INDEBTEDNESS.  Except for
arrangements expressly described in this Agreement (including loans described in
Section 2.2.2 or Section 2.4), and except for any guaranties issued by the
Managing General Partner and its Affiliates


                                          16
<PAGE>

in connection with financing of the Partnership (the "Managing General Partner
Guaranties"), no Partner shall enter into (or permit any Person related to the
Partner to enter into) any arrangement with respect to any liability of the
Partnership that would result (for any reason other than the general liability
of a General Partner for the liabilities of the Partnership) in such Partner (or
a Person related to such Partner under Regulations Section 1.752-4(b)) bearing
the economic risk of loss (within the meaning of Regulations Section 1.752-2)
with respect to such liability unless such arrangement has been Approved by the
Partners or is otherwise permitted by this Agreement.  This Section 3.5.4 shall
not prohibit any General Partner, Limited Partner or Affiliate of a Partner
electing to participate therein from making a loan described in Section 2.2.2 or
Section 2.4.  To the extent a Partner is permitted to guarantee the repayment of
any Partnership indebtedness under this Agreement, each of the other Partners
shall be afforded the opportunity to guarantee such Partner's pro rata share of
such indebtedness, determined in accordance with the Partners' respective
Funding Proportions.  If (a) a loan is to be made to the Partnership or any
Investment Entity, (b) such loan is guaranteed by any Partners or their
Affiliates (which guaranty shall occur only upon the Approval of such Partner),
(c) a Partner or an Affiliate of a Partner is required to pay, and pays, money
on account of such guaranty (including payments made pursuant to the Managing
General Partner Guaranties), and (d) the Partner making (or whose Affiliate
made) such payments is entitled to be indemnified by the Partnership with
respect to such payments under Section 5.5.2 and, after liquidating the
Partnership's assets in order to satisfy the indemnity contained in
Section 5.5.2, there are insufficient proceeds to entirely satisfy the indemnity
obligation of the Partnership to such Partner or such Affiliate with respect to
such payments, then the other Partners (the "Recontributing Partners") shall be
required to make Capital Contributions to the Partnership, within ten (10)
Business Days after receiving notice requesting reimbursement from the Partner
making (or whose Affiliate made) such payments, which notice may be given at any
time after the events described in clauses (a) through (d) of this Section 3.5.4
have occurred (or, if later, the Determination Date described in Section 5.9
with respect to such reimbursement), in the amount necessary for (i) the Partner
(and its Affiliates) making such payments, and (ii) the Recontributing Partners,
to bear the portion of such payments that has not been reimbursed under
Section 5.5.2 ("Unreimbursed Payments") in the "Appropriate Sharing Ratio"
(defined below).  In no event shall a Partner be required to make Capital
Contributions pursuant to this Section 3.5.4 in excess of the aggregate amount
distributed to the Recontributing Partner pursuant to Sections 4.1 and 4.2.3. 
Any such Capital Contributions so made shall immediately be distributed to the
Partner who made, or whose Affiliate made, such payments.

          The Appropriate Sharing Ratios of the Partners with respect to
Unreimbursed Payments shall be determined as follows:

               3.5.4.1   With respect to the portion of the Unreimbursed
Payments that does not exceed the aggregate amounts distributed to the Partners
for all periods pursuant to Section 4.1(d), such Appropriate Sharing Ratio of
each Partner shall be the percentage of such distributions so received by such
Partner; and

          3.5.4.2   With respect to the portion of the Unreimbursed Payments


                                          17
<PAGE>

exceeding the aggregate amounts distributed to the Partners for all periods
pursuant to Section 4.1(d), such Appropriate Sharing Ratio of each Partner shall
be such Partner's Funding Proportion.

          3.5.5     REFERENCES TO REGULATIONS.  Any reference in this Agreement
to a provision of final, proposed and/or temporary Regulations shall, in the
event such provision is modified or renumbered, be deemed to refer to the
successor provision as so modified or renumbered, but only to the extent such
successor provision applies to the Partnership under the effective date rules
applicable to such successor provision or the Partners otherwise so reasonably
Approve under applicable elections contained in such Regulations.

          3.5.6     TAX DEFINITIONS.

               3.5.6.1   "NONRECOURSE DEDUCTIONS" has the meaning set forth in
Regulations Section 1.704-2(c).  The amount of Nonrecourse Deductions for a
Partnership Accounting Year equals the excess, if any, of the net increase, if
any, in the amount of Partnership Minimum Gain during that fiscal year, over the
aggregate amount of any distributions during that fiscal year of proceeds of a
Nonrecourse Liability that are allocable to an increase in Partnership Minimum
Gain, determined according to the provisions of Regulations Section 1.704-2(c).

               3.5.6.2   "NONRECOURSE LIABILITY" has the meaning set forth in
Regulations Section 1.704-2(b)(3).

               3.5.6.3   "PARTNER NONRECOURSE DEBT MINIMUM GAIN" means an amount
with respect to each Partner Nonrecourse Debt, equal to the Partnership Minimum
Gain that would result if such Partner Nonrecourse Debt were treated as a
Nonrecourse Liability, determined in accordance with Regulations Section
1.704-2(i)(2).

               3.5.6.4        "PARTNER NONRECOURSE DEBT" has the meaning for
such term set forth in Regulations Section 1.704-2(b)(4).

               3.5.6.5        "PARTNER NONRECOURSE DEDUCTIONS" has the meaning
for such term set forth in Regulations Section 1.704-2(i).  The amount of
Partner Nonrecourse Deductions with respect to a Partner Nonrecourse Debt for a
Partnership Accounting Year equals the excess, if any, (i) of the net increase,
if any, in the amount of the Partnership Minimum Gain attributable to such
Partner Nonrecourse Debt during such Partnership Accounting Year, over (ii) the
aggregate amount of any distributions during such year to the Partner that bears
the economic risk of loss for such Partner Nonrecourse Debt to the extent such
distributions are from proceeds of such Partner Nonrecourse Debt and are
allocable to an increase in Partner Nonrecourse Debt Minimum Gain attributable
to such Partner Nonrecourse Debt, determined according to the provisions of
Regulations Section 1.704-2(i).

               3.5.6.6        "PARTNERSHIP MINIMUM GAIN" has the meaning
ascribed to such term in Regulations Section 1.704-2(d)(1) (and includes the
Partnership's share of the Partnership Minimum Gain of any Investment Entity).


                                          18
<PAGE>

     3.6  INTENT OF ALLOCATIONS.  The parties intend that the foregoing tax
allocation provisions of this Article 3 shall produce final Capital Account
balances of the Partners that would permit liquidating distributions, if such
distributions were made in accordance with final Capital Account balances
(instead of being made in the order of priorities set forth in Sections 4.1 and
4.2.3), to be made (after unpaid loans and interest thereon, including those
owed to Partners have been paid) in a manner identical to the order of
priorities set forth in Sections 4.1. and 4.2.3.  To the extent that the tax
allocation provisions of this Article 3 would fail to produce such final Capital
Account balances, (i) such provisions shall be amended by the Partners if and to
the extent necessary to produce such result and (ii) taxable income and taxable
loss of the Partnership for prior open years (or items of gross income and
deduction of the Partnership for such years) shall be reallocated among the
Partners to the extent it is not possible to achieve such result with
allocations of items of income (including gross income) and deduction for the
current year and future years, as reasonably Approved by the Partners.  This
Section 3.6 shall control notwithstanding any reallocation or adjustment of
taxable income, taxable loss, or items thereof by the Internal Revenue Service
or any other taxing authority.

     3.7  BASIS ELECTIONS.  In the event of a transfer of all or any part of a
Partner's interest in the Partnership, the Partnership shall elect to adjust the
basis of the Partnership's assets under Code Section 754 if reasonably Approved
by the Partners.  The transferor or transferee of a Partnership interest shall
pay all costs of preparing and filing all instruments or documents necessary to
effectuate such election if made.

     3.8  GENERAL ALLOCATION RULES.  The General Partners shall cause the Profit
and Loss of the Partnership and Gain or Loss on Disposition be allocated by the
Partnership's accountants with respect to each Partnership Accounting Year (or
part thereof) as of the end of, and within ninety (90) days after the end of,
such year, or as soon thereafter as is practically possible.  All Profit and
Loss and Gain or Loss on Disposition shall be allocated to the Partners shown on
the records of the Partnership to have been Partners as of the last day of the
Partnership Accounting Year for which such allocation is to be made, except
that, if a Partner sells or exchanges its interest in the Partnership or
otherwise is admitted as a substituted Partner, the Profit or Loss and Gain or
Loss on Disposition shall be allocated between the transferor and the transferee
by taking into account their varying interests during the Partnership Accounting
Year in accordance with Code Section 706(d), using the interim closing of the
books method or such other method as shall be reasonably Approved by the
Partners.

     3.9  SHARING OF PARTNERSHIP NONRECOURSE DEBT AND NONRECOURSE DEDUCTIONS.
Throughout the term of the Partnership, the nonrecourse debt of the Partnership
(other than Partner Nonrecourse Debt) and the Nonrecourse Deductions of the
Partnership shall be allocated for tax purposes among the Partners in accordance
with their respective Funding Proportions.  To the extent that any Partner's
share of such nonrecourse debt as so specified exceeds the amounts referred to
in Regulations Sections 1.752-3(a)(1) and (2), it is intended that the foregoing
shares shall be viewed and treated as reasonably consistent with allocations 


                                          19
<PAGE>

(which have substantial economic effect) of some significant item of partnership
income or gain within the meaning of Regulations Section 1.752-3(a)(3).

     3.10 ADJUSTMENT OF GROSS ASSET VALUE.  Gross Asset Value, with respect to
any asset, shall be the adjusted basis for federal income tax purposes of that
asset, except as follows:

          3.10.1    The initial Gross Asset Value of any asset contributed by a
Partner to the Partnership shall be the fair market value of the asset on the
date of the contribution, as reasonably Approved by the Partners. 

          3.10.2         The Gross Asset Values of all Partnership assets shall
be adjusted to equal the respective fair market values of the assets, as
reasonably Approved by the Partners (subject to Section 5.10(iii)):

               3.10.2.1  If the Partners reasonably Approve that an adjustment
is necessary or appropriate to reflect the relative economic interests of the
Partners in the Partnership, as a result of (i) the acquisition of an additional
interest in the Partnership by any new or existing Partner in exchange for more
than a DE MINIMIS capital contribution; or (ii) the distribution by the
Partnership to a Partner of more than a DE MINIMIS amount of Partnership
property as consideration for an interest in the Partnership; and

               3.10.2.2  As of the liquidation of the Partnership within the
meaning of Regulations Section 1.704-1(b)(2)(ii)(g).

          3.10.3         The Gross Asset Value of any Partnership asset
distributed to any Partner shall be the gross fair market value of the asset on
the date of distribution as reasonably Approved by the Partners (subject to
Section 5.10(iii)), less any liabilities assumed by the distributee Partner or
to which such asset is subject as of the time of distribution.

          3.10.4         The Gross Asset Values of Partnership assets shall be
increased or decreased to reflect any adjustment to the adjusted basis of the
assets under Code Section 734(b) or 743(b), but only to the extent that the
adjustment is taken into account in determining Capital Accounts under
Regulations Section 1.704-1(b)(2)(iv)(m), provided that Gross Asset Values shall
not be adjusted under this Section 3.10.4 to the extent that the Partners
reasonably Approve that an adjustment under Section 3.10.2 is necessary or
appropriate in connection with a transaction that would otherwise result in an
adjustment under this Section 3.10.4.

          After the Gross Asset Value of any asset has been determined or
adjusted under Section 3.10.1, 3.10.2 or 3.10.4, Gross Asset Value shall be
adjusted by the depreciation taken into account with respect to the asset for
purposes of computing Profits or Losses.

          Section 8.3.8 contains special rules for valuing distributions of
property other than cash that is received by the Partnership in connection with
the disposition of Partnership (or Investment Entity) assets.



                                          20
<PAGE>

     3.11 TAX PAYMENT LOANS.  On or before April 15 of each year, the
Partnership shall, upon the written request of any Partner who is not a
Terminated Partner ("Borrowing Partner"), lend (to the extent the Partnership
has available funds, determined prior to making distributions for the preceding
calendar year) (a "Tax Payment Loan") to the Borrowing Partner an amount equal
to the lesser of (i) the excess of (a) the Borrowing Partner's allocation of
Profits (computed without regard to tax-exempt income), Gain on Disposition (as
recomputed for tax purposes with reference to adjusted tax basis) and other
items of taxable income of the Partnership for the preceding calendar year,
reduced by the Borrowing Partner's allocation of Losses (computed without regard
to tax- exempt income), Loss on Disposition (as recomputed for tax purposes with
reference to adjusted tax basis) and other tax deductible items of the
Partnership for the preceding calendar year, multiplied by the Maximum Tax Rate,
over (b) the Borrowing Partner's distributions from the Partnership for such
preceding calendar year; or (ii) the excess of (a) the Borrowing Partner's
cumulative allocations of Profits (computed without regard to tax-exempt
income), Gain on Disposition (as recomputed for tax purposes with reference to
adjusted tax basis) and other items of taxable income of the Partnership from
the Agreement Date through the end of the preceding calendar year, reduced by
the Borrowing Partner's cumulative allocation of Losses (computed without regard
to tax-exempt income), Loss on Disposition (as recomputed for tax purposes with
reference to adjusted tax basis) and other tax deductible items of the
Partnership from the Agreement Date through the end of the preceding calendar
year, multiplied by the Maximum Tax Rate applicable to such allocations, over
(b) the sum of (x) the Borrowing Partner's cumulative distributions from the
Partnership from the Agreement Date through the end of the preceding calendar
year (net of repayments thereof under Section 4.3.2) and (y) the outstanding
balance(s) of all the unpaid Tax Payment Loans to such Borrowing Partner.  A
copy of any request for a Tax Payment Loan shall be given by the requesting
Partner to the other Partner.  Such loan shall bear interest at an annual rate
equal to the lesser of (1) ten percent (10%) per annum, or (2) the maximum
interest rate permitted by law, and shall be repayable both (A) out of future
distributions to the Borrowing Partner (such payment to be made by withholding
such distributions, with such distributions being deemed to have been
distributed to the Borrowing Partner and then paid by the Borrowing Partner to
the Partnership), and (B) if earlier, upon the liquidation of the Partnership or
upon demand following the Borrowing Partner's ceasing for any reason to be a
Partner hereunder, which payments shall be made from (x) the distributions
otherwise payable to such Partner in connection with the liquidation (such
amounts being deemed to have been distributed to such Partner and then paid by
such Partner to the Partnership) and (y) to the extent such distributions are
insufficient, from such Partner's other assets.  If Tax Payment Loans are made
to any of the Highridge Partners, each of John S. Long and Eugene S. Rosenfeld
shall be personally and severally (but not jointly) liable for the payment of
fifty percent (50%) of (I) the unrepaid balance of any such Tax Payment Loan
made to the Highridge Partners after applying clauses (A) and (B) of the
preceding sentence of this Section 3.11 for all periods, plus (II) the costs of
collection, including reasonable attorneys fees and expenses.  Payments shall
first be applied to unpaid interest and then principal.  Tax Payment Loans made
to a Borrowing Partner shall be full recourse loans to such Borrowing Partner
and shall be evidenced by promissory notes in form Approved by the Partners.  To
the extent an allocation of Profits, Gain on Disposition or other items of
taxable income to a Borrowing Partner with respect to which a Tax Payment Loan
is to be made are


                                          21
<PAGE>

attributable to one or more Investment Entities and the Partnership does not
otherwise have sufficient funds to make any Tax Payment Loan requested by such
Borrowing Partner, the Partnership shall seek to borrow from the Investment
Entities the necessary amounts (each such loan an "Investment Entity Tax Loan").
The Partners shall use reasonable efforts to cause each Investment Entity
Agreement, including those with third parties, to provide for the making of
Investment Entity Tax Loans to the Partnership to the extent required.  Each
Investment Entity Tax Loan shall bear interest at the same rate as a Tax Payment
Loan and shall be repayable at the same time as the related Tax Payment Loan is
repayable above, with payments first being applied to interest and then
principal and paid by the Partnership to the appropriate Investment Entity. 
Except as provided in this Section 3.11, in no event shall the Partnership or
any Investment Entity be required to borrow money or to sell any asset in order
to fund any Tax Payment Loan.  Notwithstanding anything to the contrary
contained in this Section 3.11, no Tax Payment Loan shall be made by the
Partnership with respect to any calendar year without the Approval of the
Mack-Cali Limited Partner unless the Tax Payment Loan for such year is at least
$250,000.

     3.12 APPROVALS RELATING TO TAX ISSUES.

          Notwithstanding anything to the contrary contained in this Agreement,
except as provided in this Section 3.12, during all periods except after the
Mack-Cali Limited Partner has become a Terminated Partner, all material tax
elections, other decisions relating to taxes and tax returns, require only the
reasonable Approval of the Mack-Cali Limited Partner unless it then is a
Terminated Partner, PROVIDED, HOWEVER, that Highridge GP (unless it is then a
Terminated Partner) shall reasonably Approve any settlement with the Internal
Revenue Service or any other tax authorities (whether under Section 5.4 or
otherwise), and any extension of the statute of limitations, with respect to the
Highridge Partners.  Notwithstanding the other provisions of this Section 3.12,
and during all periods, the determination of Gross Asset Value for any property
shall require the reasonable Approval of the Partners, subject to the provisions
of Section 5.10(iii).



                                          22
<PAGE>

                                      ARTICLE 4
                                           
                                 LOAN REPAYMENTS AND
                                    DISTRIBUTIONS

     4.1  NET AVAILABLE CASH, NET MORTGAGE PROCEEDS AND CAPITAL RECEIPTS.  The
General Partners shall cause the Partnership's accountants (i) at the end of
each quarter, to determine the amount of Net Available Cash and, (ii) upon the
occurrence of any event giving rise to Net Mortgage Proceeds or Capital
Receipts, to determine the amount of such Net Mortgage Proceeds and Capital
Receipts, if any.  Subject to the Partnership's obligation, if any, to make Tax
Payment Loans under Section 3.11, all Net Available Cash, Net Mortgage Proceeds
and Capital Receipts for any period shall be distributed in the following order
of priority, within thirty (30) days after the end of each calendar quarter,
after first repaying any loans to the Partnership from the Partners under
Sections 2.2.2.1 and 2.4 except as provided in this Section 4.1 (loans which
have been outstanding the longest shall be repaid first and if two or more
Partners have loans which have been outstanding for equal periods, repayment of
such loans shall be made pro rata, in proportion to such Partners' then
respective loan balances, with payments first repaying accrued but unpaid
interest and then repaying principal), and subject to the terms of Sections 4.2,
4.3 and 8.3.8 (and subject to recontribution to the Partnership as provided in
Section 4.3.2):

          (a)  First, distributions shall be made to the Mack-Cali Partners to
     the extent of, and in proportion to, their respective Undistributed
     Preferred Return;

          (b)  Next, the balance shall be distributed to the Highridge Partners
     to the extent of, and in proportion to, their respective Undistributed
     Preferred Return;

          (c)  Next, the balance shall be distributed to the Partners, pro rata,
     to the extent of, and in proportion to, their respective Invested Capital;

          (d)  Next, the balance shall be distributed to the Partners, pro rata,
     in proportion to their respective Residual Percentages.

     4.2  PROCEEDS AND DISTRIBUTIONS IN LIQUIDATION.  Subject to Section 8.3.8,
the proceeds received by the Partnership in connection with the liquidation and
winding up of the Partnership shall be applied in the following order of
priority:

          4.2.1     First, to the payment of creditors of the Partnership (other
than the repayment of any unpaid Partner loans) except secured creditors whose
obligations will be assumed or otherwise transferred on a liquidation of the
Partnership property or assets;

          4.2.2     Next, to the payment of the expenses incurred in dissolution
and termination and then to the repayment of any unpaid Partner loans in the
same priority as is described in Section 4.1; and

          4.2.3     The balance, if any, shall be distributed to the Partners in
the order of priority set forth in Section 4.1.


                                          23
<PAGE>

     4.3  GENERAL DISTRIBUTION RULES.

          4.3.1     The timing and amount of all distributions shall be in
accordance with Sections 4.1, 4.2, 8.3.8, 8.5 and 8.6.  All distributions of
cash shall be made to the Partners shown on the records of the Partnership to
have been Partners on the date of the distribution.  All distributions, upon
request by a Partner, shall be made by wire transfer in immediately available
funds to such Partner's account specified in such request.  Distributions of Net
Available Cash, Net Mortgage Proceeds and Capital Receipts made to a Partner
shall be deemed to be advances on account of such Partner's share of the
distributable amounts thereof.  For purposes of this Agreement, the term
"distributable" with respect to such distributions shall mean the amount of such
distributions as finally determined pursuant to the provisions of this Agreement
by the Partnership's accountants for the Partnership Accounting Year in respect
of which they were made and for the term of the Partnership.

          4.3.2     The Partnership's accountants shall determine whether there
has been an over-distribution to any Partner occurring by reason of a mistake at
the following times:  (i) within one hundred twenty (120) days after the end of
each Partnership Accounting Year and (ii) cumulatively during the term of this
Agreement within One Hundred Twenty (120) days after any disposition of an
Investment by the Partnership or all or substantially all of the investments of
any Investment Entity.  Any over-distribution to any Partner in respect of
either a Partnership Accounting Year or during the term of this Agreement shall
be repaid by such Partner to the Partnership and distributed to the Partner
which has received an under-distribution not later than thirty (30) days after
any Partner has given notice thereof to the other Partners, which notice shall
be given as soon as is practicable after the end of such Partnership Accounting
Year or such disposition of an Investment, as applicable.  If not paid within
thirty (30) days of such notice, the amount of any over-distribution shall
thereafter accrue interest at the lesser of (i) fifteen percent (15%) per annum
or (ii) the highest rate, if any, that would be permitted by applicable law
under these conditions.  Such returned over-distribution and any interest paid
with respect thereto as provided in this Section 4.3.2 shall be promptly
distributed by the Partnership to the Partners receiving any under-distribution
to the extent necessary to eliminate such under-distribution.  Notwithstanding
anything to the contrary in this Agreement, the obligation of the Partner
receiving an over-distribution to return such over-distribution to the
Partnership and any interest thereon shall constitute a recourse obligation of
such Partner (but not to the partners, members, managers, officers or
shareholders of such Partner or its members or partners).  Any over-distribution
returned to the Partnership shall have the same character as the character of
the corresponding, earlier distribution to the Partner which received such
over-distribution.  To the extent that any Partner or its Affiliates receives
any commitment fee, finders fee or other compensation (that is not expressly
permitted by this Agreement) by reason of the Partnership's or an Investment
Entity's participation in an Investment or a Property, such fee or compensation
shall be deemed to be Net Available Cash of the Partnership when paid, and to
the extent such fee or compensation is received by such Partner or its
Affiliates and not by the Partnership, such fee or compensation shall be deemed
to be an over-distribution to such Partner under this Section 4.3.2 that must be
paid to the Partnership (any such Partner shall notify the other Partners of the
receipt thereof immediately upon receipt by it or its Affiliates).


                                          24
<PAGE>

     4.4  SOURCE OF DISTRIBUTIONS.  Except as provided in Section 4.3.2, each
Partner shall look solely to the assets of the Partnership for the return of its
Capital Contributions and its share of distributions and shall have no recourse
upon dissolution or otherwise against the other Partners except as provided in
this Agreement.  No holder of an interest in the Partnership shall have any
right to receive any distributions except as provided in this Agreement or any
right to demand or receive property other than cash upon dissolution and
termination of the Partnership.


                                      ARTICLE 5

           MANAGEMENT; DUTIES AND POWERS OF THE MANAGING GENERAL PARTNER;
                   RIGHTS AND DUTIES OF MANAGING GENERAL PARTNER

     5.1  MANAGEMENT OF BUSINESS; OFFICERS; PARTNER OBLIGATIONS; REIMBURSEMENTS;
MAJOR DECISIONS; RETAINED APPROVALS.

          5.1.1     MANAGEMENT; POWERS.   Subject to the Approval rights of the
Partners under this Agreement, the Partnership shall be managed by the Managing
General Partner, and no Limited Partner shall take part in the control of the
Partnership's business.  The Managing General Partner of the Partnership shall
be Highridge GP unless and until replaced by a Co-General Partner as provided in
Section 7.9.5 (thereafter, such Co-General Partner shall be the Managing General
Partner).  Except as otherwise provided in this Agreement (including the right
of the Mack-Cali Limited Partner to Approve Major Decisions under Section 5.1.5
and certain other Approvals granted to the Mack-Cali Limited Partner under this
Agreement), the Managing General Partner shall be responsible for supervising
and undertaking the business of the Partnership, implementing the supervision
procedures set forth on Exhibit J for employees of the Highridge Partners and
Affiliates of the Highridge Partners who are performing work relating to the
Partnership and the Properties, and shall make all decisions affecting the
day-to-day operations of the Partnership and the Investments and the Properties.
Except to the extent the Approval of the Partners, or the Approval of the
General Partners, or the Approval of a Mack-Cali Partner is expressly required
under this Agreement, no consent or Approval of any Limited Partner or
Co-General Partner shall be required with respect to any action or decision of
the Managing General Partner regarding Partnership or Investment Entity matters.
Whenever the Approval of the Partners is required, the Partners shall act
through their Authorized Representatives  as provided in Section 1.12.  No
Partner shall receive any compensation for serving as a General Partner or as
the Managing General Partner.  Each Partner shall cause each of its Authorized
Representatives to devote as much time as is reasonably necessary to fulfill
such Partner's obligations under this Agreement.

          The Managing General Partner, at Partnership expense, shall be
responsible for obtaining and providing the Partners (within a reasonable time
after request therefor has been made by any Partner) with any information that
the Managing General Partner reasonably deems appropriate (or that the Mack-Cali
Partners have requested) with respect to the Partnership, Investment Entities,
Investments and Properties, conducting due diligence


                                          25
<PAGE>

concerning proposed Investments and Properties, negotiating the purchase on
behalf of the Partnership of any Investments or Properties that are Approved by
the Partners for acquisition, and supervising and implementing the acquisition,
financing, development, stabilization and marketing programs that have been
Approved by the Partners, all pursuant to the supervision procedures set forth
on Exhibit J.  The Partners hereby Approve the acquisition and development of
the Lava Ridge Land pursuant to the Approved Development Plan with respect
thereto that is described on Exhibit C, and each Partner shall use its
reasonable efforts to cause the Partnership and/or an Investment Entity to
obtain construction financing on such Property as soon as possible after the
execution and delivery of this Agreement as necessary to implement such Approved
Development Plan (any Partner may propose such financing to the other Partners
for their Approval).  At Partnership expense, the Highridge Partners shall
provide to the Mack-Cali Partners any information in the possession of the
Highridge Partners or their Affiliates concerning the Lava Ridge Land or any
other Property within a reasonable time after written request therefor is
received from the Mack-Cali Limited Partner.  Each General Partner, in extension
and not in limitation of the powers given to it by law or this Agreement, shall
have full power and shall have the obligation, without the necessity of
obtaining the Approval of any other Partner (except as otherwise set forth in
this Agreement), and at the expense of the Partnership, to take all actions
required to conduct the day-to-day operations of the Partnership and, subject to
the availability of Partnership funds and the funding limitations of Section
5.1.3.5, implement the Major Decisions and other decisions that have been
Approved by the Partners and pay expenses of the Partnership to the extent the
Approval of the other Partners with respect thereto is not required under this
Agreement.  The Managing General Partner shall not have the power to implement
any Major Decision unless such Major Decision has been Approved by the Partners,
as set forth in Section 5.1.6.2 hereof.  The Managing General Partner shall
negotiate all documents with respect to Investment and Property transactions
that are Approved by the Partners (or are permitted to be entered into without
such Approval as provided in this Agreement), including contracts with
surveyors, architects, governmental authorities and others concerning
entitlements, easements, surveying, landscaping, insuring, zoning, construction,
grading, improvements, and the like, all leases of space in the Properties on
behalf of any Investment Entity, offers and terms of sale of the Partnership and
Investment Entity assets, and contracts for necessary goods or services or
borrowings regarding the Investments and Properties; all to the extent Approved
by the Partners from time to time to the extent such Approval is required
pursuant to this Agreement.  The execution by any General Partner of any
document shall be sufficient to bind and shall be binding upon the Partnership
for all purposes, and third parties shall be entitled to rely on the authority
of the Managing General Partner to take any action on behalf of the Partnership.
Notwithstanding the foregoing, (i) the Managing General Partner shall not take
any action requiring Approval of the Partners, or the Approval of the General
Partners, or the Approval of a Mack-Cali Partner under this Agreement unless the
provisions of this Agreement concerning such Approval have been satisfied, and
(ii) except as otherwise provided in Section 5.9, no Co-General Partner shall
exercise any authority with respect to the matters with respect to which
authority and responsibility has been given to the Managing General Partner
hereunder unless and until (a) the Managing General Partner has become a
Terminated Partner or a Removal Default has occurred with respect to the
Managing General Partner (thereafter, the Mack-Cali Limited Partner may cause
any Co-General Partner appointed by it to become the Managing General Partner
and to assume such authority and


                                          26
<PAGE>

responsibility as provided in Section 7.9), or (b) a Performance Default has
occurred with respect to the Managing General Partner concerning an Investment
or Property (thereafter, the Mack-Cali Limited Partner shall have the rights
described in Section 5.10(ii) and Section 7.9.5 with respect to such Property). 
The Managing General Partner (or a Co-Managing General Partner that has become
the Managing General Partner under Section 7.9) shall use its reasonable efforts
to comply with all provisions of this Agreement, and, at Partnership expense, to
cause the Partnership to comply with all applicable laws and regulations.  The
cost of preparing any Investment Entity Agreement shall be a Partnership
expense.

          Subject to the other provisions of this Agreement including required
Approvals of the Partners under this Agreement, the Partnership, the General
Partners and the Partnership's officers appointed on its or their behalf under
Section 5.1.4.1 are hereby authorized:

               5.1.1.1   Subject to the Approved Budget limitations of Article
5, to pursue any rights of the Partnership (and cause each Investment Entity to
pursue any rights of such Investment Entity) with respect to each Investment and
Property pursuant to any agreement to which it (or such Investment Entity) is a
party, and to own and operate any Investment or any other asset acquired by the
Partnership pursuant to the provisions of this Agreement, including taking the
actions described in Section 1.5;

               5.1.1.2   To own the Investments (including Partnership
Interests) for investment purposes and to finance, sell, convey, assign,
transfer (including by contribution to a real estate investment trust or to a
partnership, limited liability company or any other Entity in which a real
estate investment trust is a partner, member or owner of equity ownership
interests (collectively, a "REIT")) or mortgage the Investments (including the
Partnership Interests), any other asset of the Partnership or any of them, as
well as any personal property necessary, convenient or incidental to the
accomplishment of the purposes of the Partnership, all on terms as shall be
Approved by the Partners;

               5.1.1.3   To acquire by purchase or lease, any real or personal
property that may be necessary, convenient or incidental to other the
accomplishment of the purposes of the Partnership, including Investments and
interests in Investment Entities, and to cause Investment Entities to do so;

               5.1.1.4   To operate, maintain, improve, develop and lease any
assets acquired by the Partnership (and to cause Investment Entities to do so
with respect to assets acquired by them);

               5.1.1.5   To cause the Partnership to take any and all actions
necessary convenient or appropriate as a general partner or limited partner of
any partnership or as a member and/or manager of any limited liability company
in which the Partnership has an interest and exercise all rights or powers
relating thereto and execute appropriate documents on behalf of the Partnership
in connection therewith;



                                          27
<PAGE>

               5.1.1.6   To borrow money on behalf of itself or cause Investment
Entities to do so (whether secured or unsecured) and issue evidences of
indebtedness in furtherance of any or all of the purposes of the Partnership or
any Investment Entity, and to secure the same by mortgage, deed of trust, pledge
or other lien on any assets of the Partnership or any Investment Entity;

               5.1.1.7   To borrow money on the general credit of the
Partnership or any Investment Entity (and to cause Investment Entities to do so)
for use in the Partnership or any Investment Entity business;

               5.1.1.8   To enter into, perform and carry out contracts of any
kind, including contracts with Affiliates of any of the Partners, necessary to,
in connection with or incidental to the accomplishment of the purposes of the
Partnership or any Investment Entity;

               5.1.1.9   To issue Funding Notices calling for additional Capital
Contributions in accordance with the provisions of this Agreement;

               5.1.1.10  To enter into any kind of lawful activity and to
perform and carry out contracts of any kind necessary to or in connection with
or incidental to the accomplishment of the purposes of the Partnership, so long
as said activities and contracts may lawfully be carried on or performed by a
limited partnership under the laws of the states in which the Partnership is
qualified to do business.  Each General Partner is hereby authorized to cause
the Partnership to execute and deliver all documents and instruments necessary
or appropriate, in the reasonable judgment of such General Partner, to close any
of the transactions that have been Approved by the Partners (or that do not
require the Approval of the Partners or the Approval of the General Partners). 
Except as otherwise provided in this Agreement, no Partner shall cause the
Partnership to execute and deliver any acquisition, conveyance, loan or lease
documents without first obtaining the Approval of the Partners to the Material
terms of such document.  The Material terms with respect to certain of the
entitlement, acquisition, development, and leasing documents for the Lava Ridge
Land have been Approved by the Partners and are contained in the Approved
Development Plan referred to on Exhibit C.  The Material terms of any other
document in connection with the acquisition, entitlement, development,
conveyance, loan or lease of a Property will be deemed to have been Approved by
the Partners if the actions described on Exhibit L ("Operating Approval
Standards") have been Approved by the Partners with respect to such Property. 
Notwithstanding anything to the contrary contained in this Agreement, the
Mack-Cali Limited Partner shall have the right to Approve the final version of
any acquisition, conveyance, loan or lease document to which the Partnership or
any Investment Entity is to become a party if the Mack-Cali Limited Partner has
specifically requested by notice to Highridge GP that it Approve the final
version of such document before it is entered into; PROVIDED, HOWEVER, that the
Managing General Partner may, without the Approval of any Mack-Cali Partner
being required, execute and deliver on behalf of the Partnership or any
Investment Entity any lease of space in a Property unless any of the following
applies (in which case, the Mack-Cali Limited Partner shall have the right to
Approve such lease):  (a) the lease has a term of less than five (5) years
(determined without regard to renewal rights granted to the tenant thereunder
and with regard to early termination rights of the tenant thereunder), (b) the
lease


                                          28
<PAGE>

has a term of greater than ten (10) years (including any tenant renewal rights
that are not exerciseable at market rates in effect at the time of renewal), (c)
the lease covers greater than 15% of the rentable space in a Property or greater
than 20,000 square feet of the rentable space in a Property, (d) the lease rents
are more than 5% below the budgeted rental rate set forth in the most recent
Approved Budget with respect to such Property, (e) the lease provides for
payment by the Partnership or an Investment Entity of tenant improvements that
are more than 5% above the permitted tenant improvement amount parameters that
have been Approved in advance by the Partners for such Property (or, if no such
tenant improvement parameters have been Approved in advance by the Partners, the
lease provides for such payment of tenant improvements that are more than $30
per square foot of rentable space), (f) the aggregate leasing commissions
payable by the Partnership and Investment Entities in connection with the lease
are more than 5% above the leasing commission parameters that have been Approved
by the Partners (or if no such leasing commission parameters have been Approved
in advance by the Partners, more than 5% above prevailing market rate
commissions then in effect for similar properties in similar locations), or (g)
the lease form is materially different from the standard form of lease that has
been Approved in advance by the Partners for such Property; PROVIDED, HOWEVER,
that once the terms of such documents have been Approved by the Partners, any
General Partner may cause the Partnership to execute and deliver any such
documents with such changes thereto as shall be reasonably Approved by the
General Partners, without further Approval of the Partners being required unless
such change adversely affects the Partnership in a Material manner, and only one
General Partner's execution of such documents shall be required on behalf of the
Partnership in order for such documents to be binding on the Partnership.  Third
parties shall be entitled to rely on the authority of any General Partner to
execute and deliver any document on behalf of the Partnership without the
execution thereof by any other Partner being required.  For purposes of this
Agreement, the term "Material" (or any variation thereof) means any item that
(i) would result in a difference to the Partnership of at least $100,000 with
respect to any such item, or at least $500,000 in the aggregate for all such
items, in each case for any 12-month period, or (ii) would result in a change in
the scope of any Property development as set forth in an Approved Development
Plan.  All construction contracts having payments exceeding $100,000 shall
require competitive bids, copies of which shall be submitted to the Mack-Cali
Limited Partner for review before any such contract is entered into; and

               5.1.1.11  To enter into and to perform the Partnership's
obligations under any other agreement to which it becomes a party (and cause any
Investment Entity to do so).

          5.1.2     COMPENSATION; REIMBURSEMENT.  No compensation shall be
payable by the Partnership to any Partner or to an Affiliate of any Partner
unless provision for such compensation is made (a) in the Approved Development
Plan (including the Approved Budget and Approved Overhead Budget) attached as
Exhibit C that has been Approved by the Partners with respect to the Lava Ridge
Land, or (b) in any other subsequent Approved Development Plan.  Unless
reimbursement is prohibited under Section 5.5 or another provision of this
Agreement, the Partnership shall reimburse each Partner for its actual and
reasonable out-of-pocket expenses incurred in connection with Partnership
business to the extent such Partner is authorized to take the action resulting
in such expenses and is not otherwise


                                          29
<PAGE>

reimbursed with respect thereto under this Agreement or pursuant to an Approved
Development Plan, subject to Sections 2.3 and 5.5. 

          5.1.3     BUDGETS

               5.1.3.1   ANNUAL OPERATING BUDGET; INVESTMENT BUDGETS; OVERHEAD
BUDGETS.  The Managing General Partner shall include in each proposed
Development Plan a proposed budget in connection with each Property and related
Investment, including the reasonably anticipated cash receipts therefrom, and
the reasonably anticipated costs of owning and operating such Property and
Investment, including costs of acquisition, insurance, entitlement, zoning,
development, landscaping, easements, subdivision, grading, infrastructure,
surveying, advertising, governmental approvals, operation, development,
management, leasing (including tenant improvements to be funded by the
Partnership if Approved by the Partners), repair, maintenance and renovation of
the Property for each Partnership Accounting Year, and shall deliver the same to
the Mack-Cali Limited Partner for its review and Approval.  Each such budget
shall contain the amount to be (i) expended from reserves with respect to each
Investment, and (ii) added to the reserves of the Partnership with respect to
each Investment, including reserves required by lenders to the Partnership. Each
such budget shall also forecast the amount and timing of distributions to the
Partnership with respect to each Investment for the period covered by such
budget.  At least annually (within 30 days prior to year-end), the Managing
General Partner shall also prepare and submit to the Partners for Approval a
budget for the operation of the Partnership for the following year that covers
those projected costs, if any, of operating the Partnership to the extent the
same are not contained in the Approved Budgets in effect for the Investments and
Properties for such period (such budget to require the Approval of the Partners
before it becomes an Approved Budget).  The initial Approved Partnership
operating budget is contained in the Approved Development Plan described on
Exhibit C.  The Highridge Partners shall be entitled to receive non-accountable
overhead payments from the Partnership in connection with the services performed
by them, their Affiliates and the employees thereof for the benefit of the
Partnership and the Investment Entities with respect to the Lava Ridge Land (in
full reimbursement of all of their internal costs with respect thereto, and
those of their Affiliates and employees and partners thereof), payable in
advance on the first day of each month in twenty four (24) equal monthly
installments commencing as of August 1, 1998, equal (and limited in the
aggregate) to 2.5% of total development costs with respect thereto (the
"Overhead Payments") pursuant to the Approved Budget for such Properties (the
amount described in an Approved Budget for such Overhead Payments is referred to
as the "Approved Overhead Budget").  The obligation to make Overhead Payments
shall be a Partnership expense and shall be payable prior to making
distributions to Partners.  The unpaid Overhead Payments that are payable to the
Highridge Partners shall be limited to actual cost reimbursement (excluding the
salary, benefits and other compensation of John S. Long, Eugene S. Rosenfeld and
Steven A. Berlinger) from and after the date on which any Highridge Partner has
become a Terminated Partner or has committed a Removal Default.  The initial
Approved Budget (including the Approved Overhead Budget) for the Lava Ridge Land
is contained in the Approved Development Plan for such Property that is
described in Exhibit C and is hereby Approved by the Partners and shall
constitute the Approved Development Plan with respect thereto. 


                                          30
<PAGE>

               5.1.3.2 APPROVED BUDGETS.  Each Authorized Representative of the
Mack-Cali Limited Partner shall have a period of ten (10) Business Days after a
proposed budget is submitted to them (whether or not submitted as part of a
proposed Development Plan) to notify the Managing General Partner in writing (i)
whether such Authorized Representative, on behalf of the Mack-Cali Limited
Partner, Approves the proposed budget or (ii) of any revisions such
representative believes should be made to such proposed budget.  A proposed
budget (or any proposed revision thereof) shall not be deemed to have been
Approved by the Mack-Cali Limited Partner unless actually Approved by at least
one Authorized Representative of the Mack-Cali Limited Partner within such
ten-day period.  If at least one Authorized Representative of the Mack-Cali
Limited Partner so Approves a proposed budget (or a Development Plan in which
such budget is contained), such budget shall be deemed Approved by the Partners
and shall constitute an "Approved Budget" for the Partnership for the applicable
Partnership Accounting Year covered thereby.  If within such ten (10) Business
Day period, the Mack-Cali Limited Partner does not Approve a budget for the
applicable Partnership Accounting Year with respect to any Investment or
Property, then the most recent Approved Budget for such Investment or Property
other than items in such budget consisting of additional investment outlays that
may be made at the discretion of the Partnership (such discretionary outlays are
referred to as "Discretionary Outlays"), shall continue as the Approved Budget
for the next Partnership Accounting Year with the following exceptions:  (a) all
extraordinary items for the current Partnership Accounting Year shall be
deleted; and (b) Non-Discretionary Items for the upcoming Partnership Accounting
Year shall be included at the actual cost.

               5.1.3.3 INITIAL BUDGET; SUPPLEMENTS.  The initial Approved Budget
is contained in the Development Plan described in Exhibit C.  The Managing
General Partner shall cause the Partnership to prepare supplements or revisions
to each Approved Budget from time to time within a reasonable time after it is
reasonably likely that such Approved Budget will not be met or after a request
for such a supplement or revision is received by the Managing General Partner
from the Mack-Cali Limited Partner, or if the Managing General Partner otherwise
desires to do so, which supplements or revisions shall be submitted to the
Mack-Cali Limited Partner for Approval in the same manner as that which is
provided for the Approval of budgets under Section 5.1.3.2 (if and when so
Approved, such supplement or, revision shall become part of the Approved Budget
to which it relates).

               5.1.3.4 DEVELOPMENT PLANS.  The initial acquisition and
development plan with respect to acquisition, development, renovation and
capital improvements, financing, stabilization and marketing currently Approved
for the Lava Ridge Land is described on Exhibit C (together with any other
development plan that has been Approved by the Partners from time to time, the
"Development Plan(s)").  The Managing General Partner shall deliver to the
Mack-Cali Limited Partner (within a reasonable time after request therefor is
made and the same are available), for the Mack-Cali Limited Partner's Approval,
all plans and specifications and any schematic and conceptual presentations for
the proposed development of each Property, and shall also deliver to the
Mack-Cali Limited Partner within a reasonable time after request such other
details and information regarding the Partnership, Investment Entities,
Investments and the Properties as the Mack-Cali Limited Partner shall reasonably


                                          31
<PAGE>

request from time to time, including proposals as to the identity of
architectural and engineering firms, construction contractors, construction
managers, property managers, and other consultants to be used to implement the
Subsequent Development Plan.  No architectural or engineering firm, construction
contractor, construction manager or property manager,  shall be retained with
respect to any Property without the Mack-Cali Limited Partner's Approval.  The
Managing General Partner shall modify and update any Development Plan on at
least a quarterly basis, if necessary, and submit such proposed modification or
update to such Development Plan to the Mack-Cali Limited Partner for its
Approval in the same manner as provided in Section 5.1.3.2 with respect to
budgets.  The Managing General Partner's representatives shall meet with the
Mack-Cali Limited Partner's representatives no less frequently than monthly and
at any other time reasonably requested by the Mack-Cali Limited Partner
(telephonically or in person) to discuss the status of the Properties.  In
addition, the Managing General Partner shall provide the Mack-Cali Limited
Partner with a schedule of renovation and capital improvement meetings (which
shall be held weekly) and the Mack-Cali Limited Partner shall have the right to
participate in such meetings.  The Managing General Partner shall provide the
Mack-Cali Limited Partner with a copy of any minutes of such meetings and any
materials distributed at such meetings, promptly after such meeting.

               5.1.3.5   PERMITTED EXPENDITURES.  The Managing General Partner
shall not, without the Approval of the Mack-Cali Limited Partner, make any
expenditure of funds of the Partnership or an Investment Entity, or commit to
make any such expenditure, other than in response to an Emergency, except as
provided for in an Approved Budget (to the extent an expenditure is described in
an Approved Budget or is otherwise permitted without Approval under this
Section 5.1.3.5, it may be paid if the Partnership has sufficient available
funds, whether in reserves or otherwise, to pay such expenditure; and, except as
provided in Section 2.1.2, Funding Notices may be issued with respect thereto
only upon the Approval of the Mack-Cali Limited Partner); PROVIDED, HOWEVER, the
provisions of this Section 5.1.3 shall in no way limit a General Partner's
authority to cause the Partnership or an Investment Entity to pay (but not to
issue Funding Notices as necessary to do so unless permitted under Section
2.1.2)  Emergency expenditures or Non-Discretionary Items when due that are
billed to or incurred by the Partnership or any Investment Entity in excess of
the amounts budgeted therefor; and PROVIDED, FURTHER, that the Managing General
Partner may cause the Partnership to incur up to 110% (less any contingency
percentage already contained in the Approved Budget) of the aggregate amount
budgeted for expenditures for any period in any Approved Budget (excluding
extraordinary expenditures such as acquisition cost and tenant improvements,
Overhead Payments and contingency amounts, contained in such Approved Budget)
without the further Approval of the Partners being required.  Notice of
Emergency expenditures or actions shall be given by the General Partner making
such expenditures or taking such actions to the other Partners as soon as
practicable after such expenditures are made or actions are taken.  The General
Partners shall use reasonable commercial efforts not to permit the Partnership
or any Investment Entity to commit waste with respect to any Property.

          5.1.4     EMPLOYEES; DUTIES OF THE MANAGING GENERAL PARTNER. 


                                          32
<PAGE>

               5.1.4.1     EMPLOYEES.  The Partnership shall have no employees
unless otherwise Approved by the Partners.  The internal compensation and
reimbursement costs incurred by the Highridge Partners with respect to any
Highridge Partners' employees or partners (or those of their Affiliates)
providing services to the partnership or the Investment Entities are intended to
be reimbursed through Overhead Payments made pursuant to Section 5.1.3.1 (and,
except as provided in Section 5.2(a), additional reimbursement to the Highridge
Partners and their Affiliates shall not be made with respect to internal
personnel and operating costs).

               5.1.4.2     MANAGING GENERAL PARTNER DUTIES.  The Managing
General Partner shall use its reasonable efforts, subject to the availability of
Partnership funds, to acquire the Investments and cause the Investment Entities
to acquire the Properties that have been Approved by the Partners for 
acquisition (limited as of the Agreement Date to the Lava Ridge Land), and to
take the other actions that are described in Section 1.5 and 1.11 that have been
Approved by the Partners, (ii) cause the Major Decisions and other actions that
have been Approved by the Partners to be implemented, (iii) cause proposed
Development Plans and budgets to be prepared and submitted to the Partners under
Sections 5.1.3 and 5.1.4 for Approval as required pursuant to
Section 5.1.6.2, (iv) cause the Partnership to timely issue the reports and tax
returns required under this Agreement and (v) undertake its other obligations
under this Agreement.  No General Partner shall be required to conduct the
Partnership's day-to-day operations and implement Major Decisions as such
General Partner's sole and exclusive function, and any Partner and its
Affiliates may (and expect to) have other business interests and may (and expect
to) engage in other activities in addition to those relating to the Partnership,
without having or incurring any obligation to offer any interest in such
activities to the Partnership, any Investment Entity, or any Partner (or their
Affiliates).  The Managing General Partner shall be obligated to devote, and
cause its Controlling Persons to devote, as much of their business time to the
Partnership's business as shall be reasonably required to meet the Managing
General Partner's obligations hereunder, which shall be a significant portion of
such Controlling Persons' business time.

          From and after the Approval of any transaction or action with respect
to the Investments or Properties by the Partners, any General Partner shall have
the authority, without the further Approval of the Partners being required,
(a) to cause the Partnership to proceed to document the transaction with respect
to the Investments and Properties on terms that have been Approved by the
Partners in all Material respects as provided in (and to the extent required by)
Section 5.1.1.10, with such changes thereto as shall be reasonably be Approved
by the Partners, without further Approval of the Partners being required unless
such change affects the Partnership in a Material manner (as described in
Section 5.1.1.10), and (b) to cause the Partnership to execute and deliver, and
cause the Partnership to perform its obligations under, the documents to be
executed by the Partnership in connection with such transaction (including the
acquisition of Investments or Properties pursuant to Acquisition Documents that
have been Approved by the Partners), subject to the conditions for doing so that
were Approved by the Partners (to the extent such Approval is required), the
Approved Budget limitations of Section 5.1.3.5 with respect thereto, and any
restrictions on the General Partners' authority that are contained in this
Agreement and that may be applicable from time to time. 


                                          33
<PAGE>

          5.1.5     MAJOR DECISIONS.  The following are major decisions (the
"Major Decisions") requiring the Approval (or reasonable Approval, if so
indicated) of the Partners, except as otherwise provided in this Agreement;
PROVIDED, HOWEVER, that a Partner's Approval shall not be required after such
Partner has lost its Approval rights under Section 7.9 or another provision of
this Agreement except to the extent provided in Section 5.1.6.1:

               5.1.5.1   Any act in contravention of this Agreement or extending
the term of the Partnership;

               5.1.5.2   Any act which would make it impossible to carry on the
ordinary business of the Partnership, except the liquidation of the Partnership
under the circumstances permitted in Article 8, or the sale, exchange or other
disposition of any Partnership Interest or other Investment or any other
Partnership or Investment Entity assets that has been Approved by the Partners
or otherwise is permitted under this Agreement;

               5.1.5.3   Any action which would cause the Partnership to become
an entity other than a Delaware limited partnership;

               5.1.5.4   Changing the purposes of the Partnership;

               5.1.5.5   Amending this Agreement;

               5.1.5.6   Making in-kind distributions (except as provided in
Section 8.3.8), or causing any Investment Entity to take any action with respect
to any Investment Entity asset that would be a Major Decision if such action
were taken by the Partners or the Partnership with respect to a Partnership
asset;

               5.1.5.7   Establishing or adjusting Gross Asset Value under
Section 3.10 for any contributed or distributed asset or other Revalued Property
(reasonable Approval only, subject to Sections 5.10(iii) and 8.3.8), or
Approving the terms of the tenancy-in-common agreement described in
Section 8.3.8;

               5.1.5.8   Indemnification of any Person other than a Partner or
its Affiliates pursuant to Section 5.5.2 or otherwise as permitted by this
Agreement or as Approved by the Partners;

               5.1.5.9   Except as provided in Sections 3.5.4, 3.11 and 4.3.2,
entering into any agreement (i) which would cause any Partner to become
personally liable on or in respect of or to guarantee any indebtedness of the
Partnership or (ii) which is not nonrecourse to such Partner;

               5.1.5.10  Causing the Partnership to redeem or repurchase all or
any portion of the interest of a Partner except as provided in Section 7.9, or,
except as otherwise provided in Section 5.1.1.10, causing the Partnership to
enter into any contract in connection with the acquisition, development, leasing
or disposition of any Investment that is not in all


                                          34
<PAGE>

Material respects consistent with the description thereof contained in an
Approved Development Plan or which has not otherwise been Approved by the
Partners (subject to Section 5.1.1.10, the Approved Budget limitations of
Section 5.1.3.5, and the other provisions of this Section 5.1.5, no Approval of
the Partners shall be required for any contract under which the aggregate amount
payable by the Partnership or the Investment entities will be less than $100,000
per year, other than acquisitions, borrowings, leases, and dispositions of
assets; in each case, except to the extent provided in Section 5.1.1.10); or to
borrow money from a Partner or its Affiliates except pursuant to Sections 2.2.2
or 2.4;

               5.1.5.11  Causing or permitting the Partnership to be merged with
any other entity; selling Partnership or Investment Entity assets for
consideration, including notes payable, or otherwise disposing of Partnership or
Investment Entity assets, including contributions to a REIT;

               5.1.5.12  Causing or permitting the Partnership to make a loan
to, or enter into any contract with, any Partner or any Affiliate of a Partner,
other than Tax Payment Loans permitted under Section 3.11, unless the terms of
such loan or contract comply in all material respects with the parameters with
respect thereto that have been Approved by the Partners or are contained in an
Approved Development Plan;

               5.1.5.13  Dissolving, terminating or liquidating the Partnership,
except as provided in Article 8 of this Agreement;

               5.1.5.14  Disposing of any Property or Investment (or any portion
thereof) or permitting an encumbrance to be placed on Partnership or Investment
Entity assets;

               5.1.5.15  Incur or pay costs related to the Partnership any
Investment or Property by or on behalf of the Partnership in excess of the
amounts permitted under Sections 2.3.1 and 5.1.3.5 except pursuant to an
Approved Budget;

               5.1.5.16  Obtain any third-party loans (including an operating
line of credit) on behalf of the Partnership or an Investment Entity, or,
execute or deliver on behalf of the Partnership any guarantee or other agreement
whereby the Partnership is or may become liable for any obligations of any other
Entity;

               5.1.5.17  Acquire any Property or Investment other than pursuant
to Approved Development Plans, or take any action on behalf of the Partnership
that is not within the scope of the Partnership purposes as set forth in
Sections 1.5 and 1.11;

               5.1.5.18  Modify, prepay or refinance any indebtedness of the
Partnership, or any Investment Entity, or select any lenders to make loans to
the Partnership or any Investment Entity;

               5.1.5.19  Make any distribution except as permitted under this
Agreement except in connection with the liquidation of the Partnership under
Article 8;


                                          35
<PAGE>

               5.1.5.20  Commence, dismiss, terminate or settle any material
litigation matter, material condemnation claim, or any other matter or claim
(including an insurance claim) in connection with any Property exceeding an
aggregate for any Partnership Accounting Year of the greater of (a) $50,000 or
(b) 1% of the acquisition and development expenditures made by the Partnership
with respect to such Property;

               5.1.5.21  Determine the terms of any participation (e.g.,
distribution and control issues) of third-party investors in the Partnership or
any Investment Entity;

               5.1.5.22  Except as otherwise provided in Article 7, admit
additional or transferee Partners to the Partnership as substituted Partners or
enter into financing that participates in profits; or, except as provided in
Article 7, permit any Transfer of any interest in the Partnership to the extent
Approval of the Partners for such Transfer is required under this Agreement;

               5.1.5.23  Confess any judgment against the Partnership or any
Investment Entity or cause the Partnership or any Investment Entity to file for
Bankruptcy or other relief from creditors;

               5.1.5.24  Establish insurance requirements for the Partnership or
settle insurance claims in excess of the dollar limit in Section 5.1.5.20;

               5.1.5.25  Establish or release reserves for use by the
Partnership except pursuant to an Approved Budget or as otherwise provided in
this Agreement (reasonable Approval only), or permitting (or requiring) any
Partner to make additional Capital Contributions to the Partnership except as
expressly provided in this Agreement or issue any Funding Notice except as
provided in Section 2.1.2.1(i);

               5.1.5.26  Except as provided in Section 5.1.4.2, voluntarily
deviate to a Material extent (as provided in Section 5.1.1.10) from the terms of
acquisition, disposition or other course of action with respect to any
Investment or Property (whether owned by the Partnership or a proposed
acquisition) that required the Approval of the Partners (regardless of whether
contained in an Approved Development Plan), except that, to the extent actions
are permitted to be taken hereunder in connection with an Emergency or an event
of Force Majeure and are not prohibited by contracts of the Partnership
(including contracts entered into in connection with the acquisition or
disposition of Partnership Assets), a General Partner may deviate from any
course of action Approved by the Partners as necessary to respond to such
Emergency or as is necessary as the result of such event of Force Majeure,
subject to the Approved Budget Limitations of Section 5.1.3.5;

               5.1.5.27  Engage attorneys or for the Partnership or any
Investment Entity (which attorneys shall be selected upon the reasonable
Approval of the Partners).  Price Waterhouse Coopers or another national
accounting firm Approved by the Mack-Cali Limited Partner shall be the
Partnership's accountants for all purposes, and the Partners hereby Approve the
following as the initial attorneys authorized to perform services for the
Partnership and the Investment Entities:  Battle Fowler LLP; Mark Abramson,
Esq.; Pircher,


                                          36
<PAGE>

Nichols & Meeks; Pryor, Cashman, Sherman & Flynn; Farer, Siegal & Fersko; Ervin,
Cohen & Jessup; and L. David Cole, Esq.;

               5.1.5.28  Approve the form of lease, tenant improvement allowance
or leasing commissions (except as provided in Section 5.1.1.10), project names
or any leasing agent for the Properties other than Highridge Partners or their
Affiliates as set forth in an Approved Development Plan or Approved Budget
(reasonable Approval only); or issue any press releases or otherwise speak with
the press concerning the terms of this Agreement (except that the Authorized
Representatives of a Partner may disclose the details of a Property acquisition,
development, financing, lease or disposition to the press after the same has
occurred or in connection with advertising a Property for lease or sale); or 

               5.1.5.29  Take any other action that is required to be Approved
by the Partners under this Agreement.

The enumeration of the foregoing rights shall not diminish or affect the
existence or exercise of other rights expressly granted to each of the Partners
under this Agreement.  In the event of a deadlock in obtaining the Approval of
the Partners with respect to any Major Decision, the deadlock shall be resolved
as provided in Sections 5.10 and 5.11.

          5.1.6     RETAINED APPROVALS; PROCEDURE FOR PARTNER REVIEW AND
APPROVAL.

               5.1.6.1   RETAINED APPROVALS.  Notwithstanding anything to the
contrary contained in this Agreement, after the loss of Approval rights by a
Partner under Section 7.9 (the "Non-Voting Partner"), the Non-Voting Partner
shall still retain Approval rights with respect to:

                         (a)   The determination of Gross Asset Value for any
     property (subject to Sections 5.10(iii) and 8.3.8);

                         (b)   Any act in contravention of this Agreement or
     extending the term of the Partnership;

                         (c)   Any action which would cause the Partnership to
     become an entity other than a Delaware limited liability Partnership;

                         (d)   Changing the purposes of the Partnership;

                         (e)   Amending this Agreement except as expressly
     provided in this Agreement (but only to the extent such amendment would
     materially and adversely affect the Non-Voting Partner or its Affiliates,
     unless such amendment is permitted to be made without the Non-Voting
     Partner's Approval under Section 7.9);

                         (f)   Indemnification of any Person other than a
     Partner or its Affiliates pursuant to Section 5.5.2 or except as otherwise
     permitted by this Agreement;


                                          37
<PAGE>

                         (g)   Except as provided in Sections 3.11 and 4.3.2,
     entering into any agreement (A) which would cause the Non-Voting Partner or
     its Affiliates to become personally liable on or in respect of or to
     guarantee any indebtedness of the Partnership or (B) which is not
     nonrecourse to the Non-Voting Partner and its Affiliates;

                         (h)   Causing the Partnership to redeem or repurchase
     all or any portion of the interest of a Partner except as provided in
     Section 7.9;

                         (i)   Borrow money from a Partner or its Affiliates
     except pursuant to Sections 2.2.2 or 2.4;

                         (j)   Acquire any Investment or cause any Investment
     Entity to acquire any Property, other than Investments and Properties that
     were Approved by the Partners for acquisition prior to the Non-Voting
     Partner losing its Approval rights with respect thereto under Section 7.9,
     take any action on behalf of the Partnership that is not within the scope
     of the Partnership purposes as set forth in Sections 1.5 and 1.11, or
     permit any Investment Entity to take any act that would require the
     Approval of the Non-Voting Partner under this Section 5.1.6.1 if taken by
     the Partnership;

                         (k)    Unless in compliance with the requirements of
     Section 5.2, pay any salary, fees or other compensation to, or enter into
     any contract with, any Affiliate of any Partner (but only with respect to
     contracts that do not satisfy clauses (i) and (ii) of Section 5.2) or make
     loans to any Partner other than Tax Payment Loans;

                         (l)    Prepay any Partnership indebtedness except
     (i) in connection with the disposition of any Investment or Property,
     (ii) in connection with the liquidation of the Partnership, (iii) to the
     extent such indebtedness is refinanced or (iv) in connection with
     restructuring of Partnership indebtedness; or enter into any borrowing,
     refinancing or modification of an existing borrowing other than on
     commercially reasonable terms for the reasonable needs of the Partnership's
     business; or entering into any participating financing if the Partners'
     interests are not diluted pro rata by such participation;

                         (m)     With respect to the substitution of a
     transferee or additional Partner as a Partner, except as otherwise provided
     in Section 7.9, the Non-Voting Partner shall have the right to Approve the
     admission of any new Partner (other than pursuant to Section 7.9) to the
     extent that the Non-Voting Partner's interest in the Partnership is diluted
     by the admission of the new Partner on a basis that is not pro rata with
     the dilution of the interests of all of the other Partners of the
     Partnership; and

                         (n)     Establish reserves for the Partnership, or make
     expenditures from reserves, with respect to the Partnership or any
     Investment Entity except as permitted by this Agreement, or issue any
     Funding Notice except as provided in Section 2.1.2.1(i). 


                                          38
<PAGE>

               5.1.6.2   APPROVAL PROCEDURE.  Notice of the request for a
Partner's Approval of any matter for which such Approval is required pursuant to
this Agreement shall be delivered by the requesting Partner to each of the
Authorized Representatives of the other Partner, together with the requesting
Partner's summary and analysis of any matter for which such Approval is
requested and the requesting Partner's recommendations with respect to any
matter for which Approval is requested.  Unless some other time is specified in
this Agreement, each Authorized Representative of such other Partner shall
approve or disapprove such matter by notice to the other Partner given within
ten (10) Business Days following delivery of such notice.  Failure of any
Authorized Representative to timely respond by written notice (or orally, if
permitted under Section 1.12) to the requesting Partner, indicating Approval or
disapproval of such matter, shall be deemed withholding of the Approval by such
Authorized Representative of such matter for which Approval is requested.  From
and after any such submission to such Authorized Representative, and continuing
until the matters addressed in such submission are Approved, each such
Authorized Representative shall, upon request to the Partner who has possession
thereof, be furnished promptly with access to or, if feasible, copies of such
additional pertinent information which become available to such Partner that are
requested by the Partner whose Approval has been sought.  Notwithstanding
anything in this Agreement to the contrary, no Authorized Representative of a
Partner shall have the right to Approve any action if such Partner no longer has
Approval rights with respect to such issue under Sections 7.9 and 5.1.6.1. 
Section 1.12 sets forth each Partner's Authorized Representatives and the
actions that constitute the granting of a Partner's Approval.

     5.2  AFFILIATE TRANSACTIONS; EXCLUSIVITY; MACK-CALI  PROPERTY MANAGEMENT
OPTION.

          (a)  AFFILIATE TRANSACTIONS.  If all of the material terms thereof are
clearly identified and fully described in an Approved Development Plan or are
otherwise Approved by the Partners, any Partner or its Affiliates may provide
services, including property management services, accounting services,
construction services, legal or paralegal services (but only to the extent
permitted by law), office administration, and/or document control services, to
the Partnership and/or any Investment Entity, subject to the following
conditions: (i) the fees for such services must be no greater than the fees
charged generally by qualified, unaffiliated third-parties having comparable
expertise and performing similar services in the geographical area in which the
services are to be performed; and (ii) the other terms of the agreement pursuant
to which such services will be performed shall generally be no more onerous than
the terms of agreements used by qualified, unaffiliated third-parties having
comparable experience performing similar services in the geographical area in
which the particular services are to be rendered. 

          (b)  EXCLUSIVITY.  Notwithstanding anything in this Agreement to the
contrary, there shall be no restriction against the acquisition or ownership by
any Partner or its Affiliates of any asset, including any office project,
regardless of whether the same is competitive with a Property owned by the
Partnership or an Investment Entity.


                                          39
<PAGE>

          (c)  MACK-CALI PROPERTY MANAGEMENT OPTION.  The Mack-Cali Limited
Partner has the option to elect to allow the Partnership to serve as the
property manager for any property in which such Partner or such Partner's
Affiliates have an interest (but which is not a Property owned by the
Partnership or any Investment Entity) pursuant to the terms of a management
agreement (the "Management Agreement") to be Approved by the Partners.  If
significant lease-up or rehabilitation services are required to be rendered by
the Partnership in connection with a property for which such election has been
made, the Highridge Partners or their Affiliates shall be entitled to receive a
lease-up and rehabilitation fee equal to 10% of the Mack-Cali Limited Partner's
(or such Affiliate's) profit from such property after it has recovered its
investment therein plus a 10% cumulative annual return thereon (compounded
quarterly), but only if such fee is Approved by the Mack-Cali Limited Partner in
connection with the election to allow the Partnership to manage such property
and the terms of such payment are set forth in the Management Agreement.

     5.3  REPORTING REQUIREMENTS; FINANCIALS; MEETINGS.

          5.3.1     GOVERNMENTAL REPORTS; MEETINGS.  The Managing General
Partner shall, at Partnership expense, use reasonable efforts to cause to be
prepared and timely filed with appropriate federal, state and foreign regulatory
and administrative bodies, all reports required to be filed with such entities
under then current applicable laws, rules and regulations, subject to the
reasonable Approval of the Partners, other than reports filed with local
government agencies in connection with the entitlement and development of a
Property (copies of which shall be furnished to the Mack-Cali Limited Partner
within a reasonable time after the Mark-Cali Limited Partner has requested a
copy thereof by notice to Highridge GP).  Such reports shall be prepared on the
accounting or reporting basis required by such regulatory bodies.  Each Partner
shall be provided with a copy of any such report.  No meeting of the Partners
shall be required unless requested by any Partner upon notice to all Partners,
which notice may be given by any Partner at any time.  All Partners shall be
given written notice of any meeting of the Partnership at least twenty (20) days
prior to any such meeting by the Partner requesting such meeting.  Any meetings
shall be held at the record-keeping office of the Partnership or at any other
reasonably convenient location within the United States as the requesting
Partner may reasonably Approve and specify in such notice.  The Partners may
adopt a course of conduct that provides for such meetings to be held
telephonically.

          5.3.2     ACCESS; AUDIT.  The Managing General Partner shall permit
any Partner to review and copy, during normal business hours at the office of
the Partnership, all Partnership financial records and information.  Each
Partner shall have the right to have such records and information audited at
Partnership expense; PROVIDED, HOWEVER, if such audit reveals material errors or
omissions in such records and information due to a Major Default by any Partner,
such Partner's Partner Group shall reimburse the Partnership for the expense of
audit.  The Managing General Partner shall maintain (at the office of the
Partnership) reports required or otherwise prepared and delivered hereunder or
under any Investment Entity Agreement, copies of which shall be furnished to
each Partner when available, at the Partnership's expense, together with (upon
request from any Partner) such supplementary records and reports as are
necessary to reflect the allocation among the Partners of the tax


                                          40
<PAGE>

items and distributions of the Partnership shown on any reports furnished (or
required to be furnished) to the Partners under this Agreement.

          5.3.3     FINANCIAL AND STATUS REPORTS.  (a)  The Managing General
Partner shall cause the following reports to be issued at Partnership expense:

     (i)  The Managing General Partner shall use reasonable efforts to cause to
be issued to the Partners annual financial reports, in reasonable detail, which
shall be prepared and audited by the Partnership's independent certified public
accountants at Partnership expense, by February 15 the following the close of
each year (including a balance sheet and income and expense statements, both on
an Investment-by-Investment basis and on a consolidated basis, showing sources
and uses of funds, cash on hand, distributions, changes in financial position,
tax information, Undistributed Preferred Return, Invested Capital, and unrepaid
Partner loans on a Partner-by-Partner basis).  Such financial reports shall be
prepared using GAAP, or such other method as shall be Approved by the Mack-Cali
Limited Partner from time to time upon reasonable advance notice to the Managing
General Partner; 

     (ii) The Managing General Partner shall use reasonable efforts to cause to
be issued to the Partners quarterly unaudited financial reports, in reasonable
detail, within twenty-five (25) days after the close of each calendar quarter
other than the fourth quarter of each year (commencing with the calendar quarter
ending on September 30, 1998), internally prepared by the Managing General
Partner and reviewed by the Partnership's accountants, including a balance sheet
and income and expense statements, both on an Investment-by-Investment basis and
on a consolidated basis (showing receipts on a tenant-by-tenant basis, and
material defaults, to the extent requested by the Mack-Cali Limited Partner upon
reasonable notice), sources and uses of funds, cash on hand, distributions,
changes in financial position, Undistributed Preferred Return, Invested Capital,
and unrepaid Partner loans; 

     (iii)     The Managing General Partner shall use reasonable efforts to
cause to be issued to the Partners a monthly income and expense statement, in
reasonable detail, internally prepared by the Managing General Partner on both
an Investment-by-Investment and consolidated basis within twenty (20) days after
the close of each month (including December), showing sources and uses of
Partnership funds and changes in the Partnership's financial position during
such month.  In connection with preparing such monthly income and expense
statement, the Managing General Partner shall use commercially reasonable
efforts to review the data provided by third parties (including property
managers and accountants) that is to be presented in such income and expense
statement, such review to be commenced and completed to the extent possible,
after using commercially reasonable efforts to do so, before the Managing
General Partner furnishes such statement to the Partners.  If such review is not
completed prior to furnishing such statement, such review shall be completed as
soon as is practicable thereafter (with notice being given to the Partners by
the Managing General Partner of any variance from such statement that is
discovered by the Managing General Partner in such review); and

     (iv) The Managing General Partner shall keep the Mack-Cali Limited Partner
reasonably apprised of pending due diligence, acquisition, construction,
leasing, marketing and


                                          41
<PAGE>

disposition efforts with respect to proposed and owned Investments and
Properties within a reasonable time after any material new development has
occurred or the Mack-Cali Limited Partner requests an update; and

          (b)  In preparing reports required under this Agreement, the Managing
General Partner may rely on information furnished by third parties (including
property managers and accountants) to the extent that it is reasonable to do so.

          (c)  Notwithstanding anything in this Agreement to the contrary, (i)
all Partnership and Investment Entity financials shall be prepared on the basis
required by the auditors for the Mack-Cali Limited Partner, and (ii) the
Partners shall make such amendments to this Agreement that reduce or eliminate
the rights (but not the obligations) of the Mack-Cali Partners, or add to or
increase the rights (but not the obligations) of the Highridge Partners, under
this Agreement as are reasonably requested by the Mack-Cali Limited Partner from
time to time in consultation with its auditors, in order to accommodate the
objectives of:  (A) the Mack-Cali Limited Partner not being required to
consolidate with the Partnership for accounting purposes and (B) the Mack-Cali
Limited Partner being able to report its share of the Partnership's income and
losses using the equity method of accounting.

     5.4  TAX MATTERS PARTNER; TAX RETURNS.  The Managing General Partner is
hereby designated as the "Tax Matters Partner", as such term is defined in
Section 6231(a)(7) of the Code, and it shall serve as such at Partnership
expense with all powers granted to a tax matters partner under the Code, except
that the Managing General Partner shall not take any action as the Tax Matters
Partner (including entering into any negotiation or settlement with any taxing
authority, or extending the statute of limitations with respect to any
Partnership item) without the reasonable Approval of the Mack-Cali Limited
Partner.  The Mack-Cali Limited Partner may elect to serve as the Tax Matters
Partner instead of the Highridge GP, effective upon notice from the Mack-Cali
Limited Partner to the Highridge GP which may be given at any time after the
Highridge GP ceases to be a General Partner or has committed a Performance
Default.  The Partners' Approval rights with respect to Approving tax decisions
(including settlements and extending the statute of limitations) are set forth
in Section 3.12.  Each Partner shall give prompt notice to each other Partner of
any and all notices it receives from the Internal Revenue Service (or any other
taxing authority) concerning the Partnership, including any notice of audit, any
notice of action with respect to a revenue agent's report, any notice of a
30-day appeal letter and any notice of a deficiency in tax concerning the
Partnership's federal, state or local income tax returns.  At Partnership
expense, the Tax Matters Partner shall furnish each Partner with status reports
regarding any negotiation between the Internal Revenue Service (or other taxing
authority) and the Partnership promptly after any material new development, and
the Mack-Cali Limited Partner shall be given sufficient advance notice by the
Managing General Partner so that it shall have the opportunity to participate,
and permit its professional tax advisers to participate, in person in all of
such negotiations.  The Tax Matters Partner shall use its reasonable efforts to
cause the Partnership's accountants to prepare and file on a timely basis, with
due regard to extensions (such extensions to be applied for unless reasonably
Approved to the contrary by the Mack-Cali Limited Partner, all tax and
information returns which the Partnership may be required to file.  No tax or
information return shall be filed without the reasonable Approval of the
Mack-Cali Limited Partner.


                                          42
<PAGE>

Drafts of the Partnership's tax returns shall be submitted to the Mack-Cali
Limited for review and reasonable Approval at least thirty (30) days prior to
the due date therefor (determined with due regard for extensions).  The Managing
General Partner shall cause the Partnership's accountants to prepare and
deliver, at Partnership expense, to each Partner on a timely basis an
information reporting return (K-1) reflecting each Partner's distributive share
of all income, gain, loss, deductions, allowances or credits of the Partnership
for each Partnership Accounting Year, as computed pursuant to Article 3.  If
there is a dispute as to the content of the Partnership's or Investment
Partnership's tax returns, such returns shall be filed as directed by the
Mack-Cali Limited Partner, with each other Partner having the right to file an
inconsistent position return with the applicable taxing authority(ies).

     5.5  INDEMNIFICATION AND LIABILITY OF THE PARTNERS.  See Section 9.2 for
certain conventions concerning the extent to which the acts of Affiliates or
employees of a Partner or its Affiliates will not be taken into account for
purposes of this Section 5.5 in determining whether such Partner is liable (or
is not entitled to indemnification) with respect thereto.

          5.5.1     No Partner shall be liable, responsible or accountable in
damages or otherwise to any of the other Partners or to the Partnership for any
act or omission performed or omitted by it on behalf of the Partnership, except
for a Major Default, gross negligence, and damages for a breach of this
Agreement by such Partner that is not cured within the time provided in
Section 9.2, or the breach by such Partner or its Affiliates of any agreement
with the Partnership or an Investment Entity that is not cured within the time
provided in such Agreement.

          5.5.2     Except to the extent to the extent attributable to a Major
Default, gross negligence by a Partner or a Partner's Affiliates, a Partner's
breach of this Agreement that is not cured within the time provided in
Section 9.2, or the breach by such Partner or its Affiliates of any agreement
with the Partnership or an Investment Entity that is not cured within the time
provided in such Agreement, the Partnership shall indemnify and hold harmless
each Partner and its Affiliates (and their partners, shareholders, or members)
from and against any obligations, actual damages, penalties, actions, judgments,
suits, expenses, disbursements, losses, costs or liabilities of any kind or
nature whatsoever which may be imposed upon, incurred or asserted against such
Partner or its Affiliates (or their partners, shareholders, members and their
Affiliates), including reasonable attorneys' and paralegals' fees and court
costs, except to the extent the same are reimbursed to such Partner or its
Affiliates by insurance proceeds or indemnities from third parties, in
connection with, due to or arising out of (i) such Partner's serving as a
Partner (including serving as the Managing General Partner or as a Co-General
Partner of the Partnership), or (ii) the execution and delivery by such Partner
(or its Affiliates) of any guarantee or payment or performance (including the
General Partner Guaranties), any completion agreement or guarantee, any
hazardous or toxic substance indemnity or guarantee or any other agreement
Approved by the Partners (or permitted to be entered into without such Approval)
whereby such Partner or Affiliate undertakes any monetary, performance or
indemnification obligation on behalf of the Partnership or any Investment Entity
in connection with the ownership, operation or financing of an Investment or
Property.


                                          43
<PAGE>

          5.5.3     Each Partner shall indemnify and hold harmless each other
Partner and the Partnership from and against any direct (and not consequential
or incidental) obligations, actual damages, penalties, actions, judgments,
suits, expenses, disbursements, losses, costs or liabilities (collectively, the
"Liabilities") incurred or paid by such other Partner, the Partnership or an
Investment Entity, or their Affiliates (to the extent such Liabilities are not
reimbursed by insurance proceeds or indemnities from third parties), to the
extent such Liabilities are caused by such Partner's (or its Affiliate's) Major
Default, gross negligence, or breach of this Agreement that is not cured within
the time provided in Section 9.2, or the breach by such Partner or its
Affiliates of any agreement with the Partnership or an Investment Entity that is
not cured within the time provided in such agreement.  

          5.5.4     Each Partner hereby grants to each of the other Partners and
the Partnership, as security for the performance of all obligations of such
Partner pursuant to this Agreement, a security interest in and to its interest
in the Partnership, pursuant to and in accordance with the provisions of the
Uniform Commercial Code of California, and agrees in the event such Partner is
finally adjudicated to be liable to the Partnership or another Partner for any
amount and fails, within thirty (30) days thereafter to pay the amount owed, the
non-defaulting Partner(s) and the Partnership shall each have and are hereby
granted all the rights, remedies and recourse afforded a secured party under the
Uniform Commercial Code of California, including foreclosing upon the defaulting
Partner's interest in the Partnership and selling such interest at public or
private sale or retaining such interest in accordance with the Uniform
Commercial Code of California.  To evidence such security interest, each Partner
shall from time to time execute and deliver such documents as may be reasonably
requested by any other General Partner, including a financing statement (which
may be recorded or filed in accordance with applicable law) and continuation
statements.  If the Partnership interest of a defaulting Partner is foreclosed
and sold or the interest retained as aforesaid, each non-defaulting Partner is
hereby authorized on behalf of the defaulting Partner and designated the
attorney-in-fact of the defaulting Partner to execute any and all documents and
take such other action as may be required to effectuate the sale and transfer of
the defaulting Partner's Partnership interest.  Such authorization and
designation shall be deemed coupled with an interest and shall be irrevocable.

          5.5.5     In any case where indemnity is sought by a Partner, such
Partner shall give notice of the request for indemnification to the Partnership
and the other Partners from whom the indemnity is required and give them the
opportunity to the extent reasonably possible, to participate in the defense of
the claim giving rise to the claim for indemnity, all at Partnership expense.

          5.5.6     All indemnity payments and reimbursements payable under this
Agreement to a Partner or an Affiliate of a Partner shall be treated as amounts
owed to a creditor of the Partnership, shall be paid in the ordinary course of
business, without regard to whether the Partnership has Net Available Cash, and,
shall be paid by the Partnership, PARI PASSU with other creditors of the
Partnership, in all cases prior to making distributions to Partners under
Sections 4.1 and 4.2.  No Partner shall have any liability under this Agreement
for failing to take any action under this Agreement or any agreement with the
Partnership or an Investment Entity if (i) such Partner is prohibited from
taking such action without the


                                          44
<PAGE>

Approval of a Partner in the other Partner Group under this Agreement and (ii)
such Partner in the other Partner Group fails to grant such Approval to take
such action.  No Partner shall have any liability for failing to grant any
Approval permitted to be granted by it under this Agreement.

          5.5.7     Notwithstanding anything to the contrary contained in this
Agreement, no Partner Group or its Affiliates shall receive any reimbursement
from the Partnership or another Partner for any portion of the salaries or
benefits of its Controlling Persons or the rent or utility costs of such
Partner's offices except as Approved by the other Partner Group.

     5.6  CONTROL CHANGE.  If the Managing General Partner becomes a Terminated
Partner or commits a Removal Default, the Mack-Cali Limited Partner may appoint
a Co-General Partner, and such Co-General Partner may elect to become the
Managing General Partner and to assume the Managing General Partner's authority
and responsibilities under this Agreement as provided in Section 7.9.5 (subject
to Section 5.9).  If the Managing General Partner has committed a Performance
Default with respect to an Investment or a Property, the Mack-Cali Limited
Partner shall have the rights with respect to such Investment or Property set
forth in Sections 5.10(ii) and 7.9.5 (including the appointment of a Co-General
Partner to take all actions with respect to such Investment or Property on
behalf of the Partnership, with the Managing General Partner having no further
Approval rights with respect to such Investment or Property except those set
forth in Section 5.1.6.1).

     5.7  LIMITATION OF LIABILITY.  Each Partner's liability shall be limited as
set forth in this Agreement, the Act and other applicable law.  Except as
provided in Sections 2.1.2, 2.2.2.1, 3.5.4, 3.11, 4.3.2, 5.5.1, 5.5.3 or 7.6, a
Partner will not be personally liable for any debts or losses of the Partnership
beyond the Partner's interest in the Partnership, other than distributions
received by a Partner as to which, by terms of the Act, such Partner is
obligated to return.  No partner, officer, director, shareholder or manager of a
Partner shall be liable for the obligations of such Partner to the Partnership
or the other Partners under any circumstances other than a Major Default that
has actually been committed by such partner, officer, director, shareholder or
manager or as provided in Section 3.11.

     5.8  NO PRIORITIES.  Except as specifically provided in this Agreement, no
Partner shall have any priority over any other Partner as to the return of his
or its Capital Contributions or as to distributions or allocations of Profits or
Losses or other tax items.

     5.9  DETERMINATION DATE FOR INDEMNITY PAYMENTS, REMOVAL DEFAULTS,
PERFORMANCE DEFAULTS AND MAJOR DEFAULTS; ARBITRATION.  

          5.9.1     For purposes of this Agreement, until the "Determination
Date" (defined below) has occurred, (i) no amount shall be due and owing by any
Partner to the Partnership or to another Partner pursuant to Section 3.5.4,
5.5.1 or 5.5.3, 7.6 or 9.2, and (ii) no Major Default, Performance Default or
Removal Default shall be deemed to have occurred and no Partner shall be deemed
to have become a Terminated Partner for purposes of applying Section 7.9 other
than by reason of such Partner becoming a Defaulting Partner under Section
2.2.2, in each case if there is a bona fide dispute as to whether such amount is
due or whether a


                                          45
<PAGE>

Partner is a Terminated Partner (other than by reason of such Partner becoming a
Defaulting Partner under Section 2.2.2) or has committed a Performance Default
or Removal Default.  Except for the purpose of determining that a Control Change
Notice issued by the Mack Cali Limited Partner is effective as provided below in
this Section 5.9 upon an alleged Major Default, Performance Default or Removal
Default by the Managing General Partner or because the Managing General Partner
is a Terminated Partner, the "Determination Date" shall be deemed to have
occurred only upon the earlier to occur of the following: (a) the final
determination by a Court described in Section 9.4 that an amount described in
Section 3.5.4, 5.5.1, 5.5.3, 7.6 or 9.2 is due and payable, or the Major
Default, Performance Default or Removal Default in question has occurred or a
Partner has become a Terminated Partner (as the case may be) and the expiration
of the time to file a notice of appeal from such determination has expired
without such notice having been filed; or (b) the affirmation of a determination
described in preceding clause (a) by the entry of judgment to such effect by the
court to which such determination has been appealed.

          5.9.2     Notwithstanding the provisions of this Section 5.9, if the
Mack-Cali Limited Partner alleges in good faith, by issuing a Control Change
Notice to the Managing General Partner stating that the Managing General Partner
has committed a Major Default Performance Default, or Removal Default or that
the Managing General Partner otherwise is a Terminated Partner, and the Managing
General Partner in good faith gives notice to the Mack-Cali Limited Partner
within five (5) Business Days after receiving such Control Change Notice that it
disputes whether such Major Default, Performance Default or Removal Default or
any event giving rise to Terminated Partner status has occurred, the Mack-Cali
Limited Partner may commence an expedited arbitration proceeding held in Los
Angeles, California pursuant to applicable California arbitration rules to
determine whether such Major Default, Performance Default or Removal Default or
other event giving rise to Terminated Partner status has occurred by giving
notice to the Managing General Partner appointing a qualified arbitrator and
stating that the Mack-Cali Limited Partner is invoking the arbitration
proceedings of this Section 5.9.  Within five (5) Business Days after receiving
such notice, the Managing General Partner shall, by notice to the Mack-Cali
Limited Partner, appoint a second qualified arbitrator.  If the Managing General
Partner fails timely to so appoint such second qualified arbitrator, or fails
timely to notify the Mack-Cali Limited Partner that the Managing General Partner
disputes whether such Major Default, Performance Default, Removal Event or 
event giving rise to Terminated Partner status has occurred, the Determination
Date shall


                                          46
<PAGE>

be deemed to have occurred solely for the purposes set forth below in this
Section 5.9.  If the Managing General Partner timely so appoints such second
qualified arbitrator, the two arbitrators so appointed shall appoint a third
qualified arbitrator within five (5) Business Days after the notice of the
appointment of the second arbitrator is received from the Managing General
Partner by the Mack-Cali Limited Partner.  Within five (5) Business Days after
being appointed, the third arbitrator shall (A) consider the evidence submitted
by the Partners and (B) upon notice to all Partners, determine (solely for
purposes of determining whether such Control Change Notice is valid and
effective) whether the Managing General Partner has committed a Major Default,
Performance Default, or Removal Event or event giving rise to Terminated Partner
status.  If the third arbitrator determines that the Managing General Partner
has committed a Major Default, Performance Default, or Removal Event, or that
any event giving rise to Terminated Partner status has occurred, then the
Determination Date shall be deemed to have occurred solely for purposes of
determining whether such Control Change Notice is effective and thereby enabling
(i) the Co-General Partner appointed by the Mack-Cali Limited Partner pursuant
to Section 7.9.5 to become the Managing General Partner and permanently assume
the Managing General Partner's authority and responsibility under Section 7.9.5
if a Removal Default or any event giving rise to Terminated Partner status was
held to have occurred in the arbitration, or who may, in the case of a
Performance Default that is held in the arbitration to have occurred with
respect to an Investment or Property, take all actions with respect to such
Investment or Property on behalf of the Partnership, with the Managing General
Partner having no further Approval rights with respect to such Investment or
Property except those set forth in Section 5.1.6.1, or (ii) the Mack-Cali
Limited Partner to have the rights set forth in Section 5.10(ii).  The
Determination Date shall not be deemed to have occurred for any other purpose
unless and until otherwise provided in this Agreement.  During the period
beginning on the date on which such Control Change Notice is received by the
Managing General Partner and ending with the determination by the foregoing
arbitration that the subject Major Default, Performance Default, Removal Event,
or event giving rise to Terminated Partner status has not occurred, all actions
permitted to be taken under this Agreement by the Managing General Partner
without the consent of the Mack-Cali Limited Partner in connection with the
operation of the Partnership's business (or, in the case of a Performance
Default, in connection with the Investment or Property that is the subject of
the Performance Default being arbitrated) shall, upon the election in writing by
the Mack-Cali Limited Partner made by giving notice to the Highridge Partners
(which election may specify which Approval rights it desires and may be
supplemented by notice from the Mack-Cali Limited Partner to add or remove
Approval rights specified in such notice), require the Approval of the Mack-Cali
Limited Partner (and the Managing General Partner shall be absolved of all
responsibility and liability to the Partnership and the Mack-Cali Partners for
failing to undertake all such actions for which the Mack-Cali Limited Partner
has withheld its Approval during such period).  The costs of the arbitration
shall be funded 50% by each Partner Group, and the Partners shall bear their own
attorneys fees, during the arbitration.  The prevailing Partner Group shall be
repaid all of such expenses by the non-prevailing Partner Group within ten (10)
days after receiving notice of the third arbitrator's decision.  A "qualified
arbitrator" means any Person who has had over fifteen (15) years of experience
in drafting, negotiating and/or interpreting partnership and/or operating
agreements involving the ownership and operation of commercial real estate.

     5.10 DEADLOCK/PARTNER SALE RIGHTS.  Either Highridge GP or the Mack-Cali
Limited Partner (provided such Partner has not become a Terminated Partner or
committed a Performance Default or Removal Event) may at any time give notice to
the other (a "Deadlock Notice") if such Partner asserts that there is an
irreconcilable difference of opinion among the Partner Groups (a "Deadlock") as
to the course of action to be taken with respect to any Major Decision on which
they both have Approval rights.  The Deadlock Notice shall describe the Deadlock
and the resolution proposed by the Partner issuing the Deadlock Notice.  If a
Deadlock Notice is properly issued, the Partners shall meet in good faith during
the 30-day period after the Deadlock Notice has been received.  If the Major
Decision that is the subject of the Deadlock is not resolved within such 30-day
period, then:


                                          47
<PAGE>

               (i)  In the case of any Deadlock that occurs with respect to a
     Property prior to the date on which 95% Stabilization has occurred with
     respect to such Property, there shall be no mechanism to resolve the
     Deadlock, and arbitration or litigation shall not be used to resolve any
     such Deadlock except as provided in Section 5.10 (iii), this clause (i), in
     clauses (ii) and (iii) of this Section 5.10, or in Section 5.4 in the case
     of tax returns.  In the case of a Deadlock with respect to a Property
     occurring on or after the date on which 95% Stabilization has occurred with
     respect to such Property, the provisions of this clause (i), Sections
     5.10(ii) and (iii), 5.4 (tax returns) and 5.11 (the first-offer procedure)
     shall apply.  In the case of a Deadlock that occurs at any time regarding
     (A) whether a Funding Notice is permitted or required to be issued under
     Section 2.1(b), or (B) what actions should be taken with respect to the
     sale or other disposition of assets that is being made in connection with
     the liquidation of the Partnership where both the Highridge GP and the
     Mack-Cali Limited Partner have Approval rights with respect thereto, the
     dispute may be resolved through an expedited arbitration conducted in
     accordance with a procedure that is analogous to that contained in Section
     5.9.2 (with conforming changes being made to the terminology contained
     therein and with either Highridge GP or the Mack-Cali Limited Partner being
     able to invoke such arbitration proceeding by notice to the other).

               (ii)      SPECIAL RULES FOR PERFORMANCE DEFAULTS.  From and after
     the date on which a Performance Default with respect to an Investment or
     Project has been held to have occurred under Section 5.9.2 for purposes of
     issuing a Control Change Notice under Section 7.9.5, the Mack-Cali Limited
     Partner may propose to the Highridge GP that any action be taken (or not be
     taken) at any time by the Partnership or an Investment Entity with respect
     to such Investment or Project.  If Highridge GP does not agree with such
     proposal, such Deadlock shall be resolved in the manner directed and
     Approved by the Mack-Cali Limited Partner (and Highridge GP shall cause the
     Partnership and such Investment Entity promptly to take, or refrain from
     taking, as appropriate, such action in the manner so directed and Approved
     by the Mack-Cali Limited Partner).  In the case of a Performance Default,
     the Mack-Cali Limited Partner shall also have the rights set forth in
     Section 7.9.5 with respect to appointing a Co-General Partner.

               (iii)     GROSS ASSET VALUE DEADLOCKS.  In the case of a Major
     Decision described in Section 5.1.5.7 or 8.3.8, concerning the Gross Asset
     Value of any property, the dispute concerning such Major Decision shall be
     resolved in the following manner (subject to the special rules contained in
     Section 8.3.8).  Unless and until such Gross Asset Value has been Approved
     by the Partners or determined as provided in this paragraph (iii), the
     transaction giving rise to the determination of Gross Asset Value shall not
     be consummated by any Partner.  Either Highridge GP or the Mack-Cali
     Limited Partner (the "Invoking Partner") may give notice to the other of
     them (the "Other Partner") stating that such Partner is invoking the
     following procedure, setting forth its proposed Gross Asset Value for such
     property (the "GAV Notice"), and appointing a "qualified appraiser"
     (defined below).  Within five (5) Business Days after receiving a GAV
     Notice, the Other Partner shall, by notice to the Invoking Partner, appoint
     a second qualified appraiser.  If the Other Partner fails


                                          48
<PAGE>

     timely to so appoint such second qualified appraiser, the Gross Asset Value
     shall be deemed to be that set forth in the GAV Notice.  If the Other
     Partner timely so appoints such second qualified appraiser, the two
     appraisers so appointed shall appoint a third qualified appraiser within
     five (5) Business Days after the notice of the appointment of the second
     appraiser is received by the Invoking Partner.  Within five (5) Business
     Days after being appointed, the third appraiser shall (A) consider the
     evidence submitted by the such Partners and (B) upon notice to both of such
     Partners, determine such Gross Asset Value.  The cost of the appraisal
     shall be funded by the Partnership, and the Partner Groups shall bear their
     own attorneys fees, during the appraisal.  A "qualified appraiser" means
     any M.A.I. appraiser who has had over fifteen (15) years of experience in
     valuing commercial real estate in Los Angeles, California.

               (iv)      PARTNER SALE RIGHTS.  The Mack-Cali Limited Partner
     shall have the right to cause the Partnership to cause the sale or other
     disposition of any Property at any time if (a) a Co-General Partner has
     assumed the Managing General Partner's authority and responsibility, or the
     Mack-Cali Limited Partner or a Co-General Partner has assumed control of
     such Property, under Section 5.10(ii) or Section 7.9.5, (b) the Managing
     General Partner becomes a Terminated Partner, or (c) the Mack-Cali Limited
     Partner reasonably determines prior to completion of such Property that
     development of such Property should be abandoned (an "Abandonment
     Decision").  The right to cause a sale or other disposition of a Property
     pursuant to the foregoing clauses (a) through (b) shall be hereinafter
     referred to as the "Mack-Cali Sale Right."  If the Mack-Cali Limited
     Partner becomes a Terminated Partner, the Managing General Partner shall
     have the right to cause the Partnership to sell such Property (or any or
     all Properties if the Mack-Cali Limited Partner has become a Terminated
     Partner) at any time (the "Managing General Partner Sale Right").  If the
     Mack-Cali Limited Partner makes an Abandonment Decision pursuant to this
     Section 5.10(iv), the Partners' obligations to fund the completion of such
     Property shall cease for any future development and the Partners shall
     separately fund and bear, without reimbursement from the Partnership, any
     Investment Partnership or any Partner or its Affiliates, any abandonment
     costs  (including any amounts that are due and payable by a Partner or any
     Affiliate of a Partner under any Managing General Partner Guaranty to the
     extent indemnification is available with respect thereto under Section 5.5)
     in the ratio of 80% by the Mack-Cali Partners and 20% by the Highridge
     Partners.

          Any Property to be sold in accordance with clause (c) of this Section
     5.10(iv) or upon a liquidation in accordance with Article 8 that does not
     occur as the result of the exercise of the Mack-Cali Sale Right or the
     Managing General Partner Sale Right shall be sold in a manner reasonably
     Approved by the Partners or, if necessary, as determined pursuant to the
     procedure described in Section 5.10(i)(B).  If the Mack-Cali Limited
     Partner has the Mack-Cali Sale Right with respect to any Property, upon
     notice to the Managing General Partner, the Mack-Cali Limited Partner shall
     have the right to cause the Partnership to sell or otherwise dispose of
     such Property as it shall Approve, including the right to cause the
     Partnership to sell or contribute such Property to a REIT (whether or not
     Controlled by  Mack-Cali Realty or its Affiliates).  Notwithstanding
     anything to the contrary contained in this Agreement, if any Property


                                          49
<PAGE>

     has achieved 95% Stabilization, the Mack-Cali Limited Partner shall have
     the right to cause the Partnership to sell or contribute such Property to a
     REIT that is Controlled by Mack-Cali Realty or its Affiliates.  Any sale or
     contribution of a Property by the Partnership or an Investment Entity
     (regardless of whether made pursuant to the Mack-Cali Sale Right under this
     Section 5.10(iv), pursuant to Section 5.11 or any other provision of this
     Agreement) to an Affiliate of any Mack-Cali Partner or to a REIT that is
     Controlled by Mack-Cali-Realty or its Affiliate shall be made at fair
     market value as determined through the "FMV Appraisal Procedure" set forth
     herein, provided however, that if the Mack-Cali Limited Partner elects to
     contribute a Property to a REIT instead of effecting a sale of the
     Property, the Highridge Partners shall have the option to receive cash for
     their indirect interests in such Property (equal to the amount they would
     have received if the Property were sold for cash) instead of REIT stock or
     partnership interests.

          If Highridge GP does not Approve the value proposed by the Mack-Cali
     Limited Partner, the "FMV Appraisal Procedure" which shall be invoked by
     the Mack-Cali Limited Partner as a condition precedent to a transfer of a
     Property to a REIT Controlled by the Mack-Cali Limited Partner or its
     Affiliates is as follows.  The Mack-Cali Limited Partner shall give notice
     to the Managing General Partner stating that the Mack-Cali Limited Partner
     is invoking the FMV Appraisal Procedure, setting forth its proposed  fair
     market value for the Property (the "FMV Notice"), and appointing a
     "qualified appraiser" (defined below).  Within five (5) Business Days after
     receiving an FMV Notice, the Managing General Partner shall, by notice to
     the Co-General Partner, appoint a second qualified appraiser.  If the
     Managing General Partner fails timely to so appoint such second qualified
     appraiser, the fair market value shall be deemed to be that set forth in
     the FMV Notice.  If the Managing General Partner timely so appoints such
     second qualified appraiser, the two appraisers so appointed shall appoint a
     third qualified appraiser within ten (10) Business Days after the notice of
     the appointment of the second appraiser is received from Highridge GP by
     the Managing General Partner.  Within five (5) Business Days after being
     appointed, the appraisers shall (A) consider the evidence submitted by such
     Partners and (B) upon notice to both of such Partners, determine such fair
     market value.  The fair market value shall be the amount determined by the
     three appraisers, or if there is a dispute among the three appraisers as to
     value, the value established by the third appraiser shall be the fair
     market value (but the fair market value shall not exceed the highest, or be
     less than the lowest, value established by the other two appraisers).  The
     cost of the appraisal shall be funded by the Partnership, and the Partners
     shall bear their own attorneys fees, during the appraisal.  A "qualified
     appraiser" means any M.A.I. appraiser who has had over fifteen (15) years
     of experience in valuing commercial real estate in Los Angeles, California.

     5.11 PROPERTY DEADLOCK.   Notwithstanding the provisions of Sections 5.9
and 5.10, if (A) either Partner Group desires to sell or otherwise dispose of
any Property at any time after the expiration of thirty-six (36) months after
the completion of such Property if 95% Stabilization has not occurred by such
date and such Partner Group does not then have the right to dispose of
suchProperty pursuant to the Managing General Partner Sale Right or the


                                          50
<PAGE>

Mack-Cali Sale Right (as appropriate) under Section 5.10(iv), (B) on or after
the date on which 95% Stabilization of a Property has occurred, either Partner
Group desires to sell or otherwise dispose of such Property and such Partner
Group does not then have the right to dispose of such Property pursuant to the
Mack-Cali Sale Right or the Managing General Partner Sale Right (as appropriate)
under Section 5.10(iv), or (C) on or after the date on which 95% Stabilization
of a Property has occurred, there is a dispute as to whether any Major Decision
(other than those described in the last sentence of Section 5.10(i)) should be
Approved (or reasonably Approved) by the Partners with respect to such Property
(the events referred to in the preceding clauses (A), (B) and (C) of this
Section 5.11 are individually referred to as a "Property Deadlock"), the
resolution of such Property Deadlock shall only be made pursuant to this Section
5.11.

               (a)    If a Property Deadlock occurs, either of the Highridge
Partners or the Mack-Cali Partners (the "Proponent Group") (provided no Partner
in such Partner Group shall be a Terminated Partner, shall have committed a
Performance Default with respect to such Property, or shall have committed a
Removal Default, and, PROVIDED, FURTHER, that no prior election to sell or
otherwise dispose of such Property shall have been made and be pending under
Section 5.10(iv) or otherwise shall have been Approved by the Partners and be
pending), may give the other Partner Group (the "Respondent Group") notice (the
"First Offer Notice") setting forth a gross value for such Property (the
"Proponent Group First Offer Price"). 

     Within ten (10) Business Days after receiving the First Offer Notice, the
Respondent Group may give notice to the Proponent Group (the "Appraisal Notice")
electing to establish the gross value of the Property by appraisal (in lieu of
using the Proponent Group First Offer Price).   In order for the Appraisal
Notice to be effective, the Appraisal Notice must both (1) appoint the first of
the three qualified appraisers who will establish the gross value of the
Property (including any reserves of the Partnership and any Investment Entity
allocable to such Property) by appraisal (the "Appraised First Offer Price"),
and (2) elect one of the following procedures:

          (i)  BUY-OUt.  If elected by the Respondent Group, the Respondent
     Group irrevocably elects to purchase the Proponent Group's interest in the
     Property for the amount the Proponent Group would receive if the Property
     were sold for the Appraised First Offer Price and the net proceeds thereof
     (after repayment of Partnership or Investment Entity debt allocable to such
     Property and after deducting reasonable reserves for contingencies for such
     Property) were paid and/or distributed by the Partnership to the Partners
     pursuant to Sections 4.1 and 4.2 ("Proponent Group Interest Purchase
     Price"); or

          (ii) NON-BINDING APPRAISAL.  If elected by the Respondent Group, the
     Proponent Group shall have the option, exercisable by notice to the
     Respondent Group given within thirty (30) days (or 60 days if the Proponent
     Group is the Highridge Group and an All-Cash Election has been made under
     Section 5.11(b)) after receiving the Appraised First Offer Price, to
     purchase the interest of the Respondent Group in such Property for the
     amount the Respondent Group would receive if the Property were sold


                                          51
<PAGE>

     for the Appraised First Offer Price and the net proceeds thereof (after
     repayment of Partnership or Investment Entity debt allocable to such
     Property and after deducting reasonable reserves for contingencies for such
     Property) were paid and/or distributed by the Partnership (the "Respondent
     Group Interest Purchase Price").  If within the foregoing 30 or 60-day
     period (as applicable), the Proponent Group does not elect to purchase the
     Respondent Group's interest in such Property pursuant to the foregoing,
     then, the Respondent Group shall have the option to elect by notice to
     Proponent Group, given within the thirty (30) day period (or 60-day period
     if the Respondent Group is the Highridge Partners and an All-Cash Election
     has been made by the Mack-Cali Partners as provided in Section 5.11(b))
     after the expiration of such 30-day period (or 60-day period, as
     applicable), to purchase the Proponent Group's interest in such Property
     for the Proponent Group Interest Purchase Price.  If within the foregoing
     thirty 30 or 60-day period (as applicable), the Respondent Group does not
     elect to purchase the Proponent Group's interest in such Property pursuant
     to the foregoing, then the Proponent Group shall have the right to
     unilaterally cause the sale of the Property (without the Approval of any
     other Partner being required) for a price not less favorable to the
     Partnership than the Appraised First Offer Price.  The Proponent Group
     shall have one hundred twenty (120) days to close such sale (which period
     shall be extended to one hundred eighty (180) days if a binding,
     non-contingent, sale contract has been executed prior to expiration of such
     120 day period).  

     If an Appraisal Notice is timely given by the Respondent Group within ten
(10) Business Days after receiving a First Offer Notice, the Proponent Group
shall, within five (5) Business Days after receiving such Appraisal Notice,
appoint a second appraiser to establish the Appraised First Offer Price as set
forth above.  If the Proponent Group does not timely appoint the second
appraiser, the value established by the first appraiser shall control.  Within
five (5) Business Days after the first appraiser receives notice of the identity
of the second appraiser, the first and second appraisers shall appoint a third
appraiser.  Within ten (10) business days after the third appraiser is
appointed, the appraisers shall issue to the Proponent Group and the Respondent
Group their determination of the Appraised First Offer Price.  In the case of a
dispute among the three appraisers as to value, the value established by the
third appraiser shall be the Appraised First Offer Price for the purpose of this
Section 5.11 (but the Appraised First Offer Price shall not exceed the highest,
or be less than the lowest, value established by the other two appraisers).  The
cost of the appraisal shall be borne 50% by the Proponent Group and 50% by the
Respondent Group.

     If an Appraisal Notice is not timely given by the Respondent Group within
the ten (10) Business Day period prescribed above, then the Respondent Group
shall have thirty (30) days (or sixty (60) days if the Highridge Partners are
the Respondent Group and an All-Cash Election has been made by the Proponent
Group) after receiving the First Offer Notice to elect, by giving notice to the
Proponent Group, to purchase the Proponent Group's interest in the Property for
the amount the Proponent Group would receive if the Property were sold for the
Proponent Group's First Offer Price and the net proceeds (after repayment of
Partnership and Investment Entity debt allocable to the Property and after
deducting reasonable reserves for contingencies for such Property) were
distributed and/or paid by the Partnership pursuant to Sections 4.1 and 4.2
("Non-Appraisal Interest Purchase Price") to the Partners and, except


                                          52
<PAGE>

as provided in Section 5.11(c) below, the Respondent Group shall have sixty (60)
days thereafter to close on the purchase of the Proponent Group's interest in
the Property.  If the Respondent Group fails to elect to purchase the interest
of the Proponent Group within the 30- or 60-day period (as applicable) after
receiving the First Offer Notice as specified above, the Proponent Group may
unilaterally cause the sale of the Property for a price not less favorable to
the Partnership than the Proponent Group's First Offer Price.  In such event,
the Proponent Group shall have one hundred twenty (120) days after the
expiration of the specified 30- to 60-day period (as applicable) to close such
sale of the Property (which period shall be extended to one hundred eighty (180)
days if a binding, non-contingent, sale contract has been executed prior to the
expiration of the foregoing 120-day period).

               (b)    The Respondent Group or Proponent Group that elects to
purchase the other Partner Group's interest in a Property following invocation
of the first-offer procedure of this Section 5.11 shall have sixty (60) days
after the election to close the purchase of such interest in such Property,
PROVIDED, HOWEVER, that if: (x) the Mack-Cali Partners are the Proponent Group
and  state in the First Offer Notice, or (y) the Mack-Cali Partners are the
Respondent Group and  state in the Appraisal Notice, that they elect not to
permit deferred payment terms for the Highridge Partners as purchaser (an
"All-Cash Election"), then the Highridge Partners shall have sixty (60) days
(instead of 30 days) after the purchase price is established for the Mack-Cali
Partners' interest in such Property to elect to purchase and ninety (90) days
thereafter to close such purchase.  If the Highridge Partners are the purchaser
of the Mack-Cali Partners' interest in a Property and the Mack-Cali Partners did
not make an All-Cash Election, the terms of the purchase shall be as follows:
25% of the interest purchase price shall be paid in cash as the down payment at
the closing, and the balance of the purchase price shall be payable one year
after closing.  If the Mack-Cali Partners are the purchaser of the Highridge
Partners' interest in a Property, or if the Mack-Cali Partners made an All-Cash
Election, the entire purchase price for such interest shall be paid at closing. 
At closing, (i) the Partnership shall distribute the Property to the purchasing
Partner Group, (ii) the selling Partner Group shall be deemed to have received a
distribution of the Proponent Group Interest Purchase Price or the Respondent
Group Interest Purchase Price (as applicable, depending on whether the selling
Partner Group is the Proponent Group or the  Respondent Group) under this
Agreement, and (iii) the purchasing Partner Group shall be deemed to have
received a distribution of the Proponent Group First Offer Price or the
Appraised First Offer Price (as applicable), less allocable the debt, and less
the purchase price payable to the selling Partner Group.  The purchasing Partner
Group shall be obligated to pay any release price to the Partnership's or
Investment Entity's lenders as necessary to permit the purchasing Partner Group
to own the Property if the debt encumbering the Property is not assumable by the
purchasing Partner Group, PROVIDED, HOWEVER, that if (A) the Highridge Partners
purchase the Mack-Cali Partners' interests in a Property, and (B) the Mack-Cali
Partners did not make an All-Cash Election, the Mack-Cali Partners shall lend or
arrange to have lent (subject in each case to any obligation not to breach loan
covenants on their debt and that of their Affiliates) to the Highridge Partners
75% of such release price for a one-year period on a non-recourse basis (subject
to standard recourse carve-outs for environmental liability and wrongful acts)
at a rate equal to the greater of 100 basis points over the Prime Rate or 300
basis points over LIBOR.  If the purchasing Partner Group wrongfully fails to
close timely the purchase of the selling Partner Group's interest in the
Property, the selling


                                          53
<PAGE>

Partner Group shall have as its exclusive remedies for such failure the right to
assume complete control over the disposition of that Property (without the
Approval of any other Partner being required) and the right to purchase the
breaching Partner Group's interest in that Property (and receive a distribution
of that Property in respect thereof) for 80% of the amount that the breaching
Partner Group would have received if the Property were sold for the Proponent
Group First Offer Price or Appraised First Offer Price (as applicable), and the
damage provisions of Section 9.2 shall not apply to such breach.

          The Proponent Group Interest Purchase Price, the Respondent Group
Interest Purchase Price and the Non-Appraisal Interest Purchase Price shall be
readjusted to account for the release of any reserves for contingencies
previously reducing such amounts when such amounts become available for
distribution to the Partners.

          (c)  Notwithstanding anything in this Agreement to the contrary, by
notice to Highridge GP given by the Mack-Cali Limited Partner at any time at
least five (5) Business Days before a payment of purchase price to the Highridge
Partners is required under this Section 5.11, the Mack-Cali Limited Partner may
elect to satisfy all or any portion of its obligation to pay the purchase price
payable to the Highridge Partners under this Section 5.11 by the delivery of
shares of common stock in Mack-Cali Realty that may be sold immediately on a
national securities exchange without further registration or restriction and
that constitute marginable securities (such shares to be valued at the average
closing price per share on a national securities exchange for the ten trading
days preceding the date that is five (5) Business Days prior to the date on
which the payment in shares is being made); PROVIDED, HOWEVER, that the
Highridge Partners shall have the option, exercisable by Highridge GP giving
notice to the Mack-Cali Limited Partner prior to the time such Mack-Cali Realty
shares are issued to the Highridge Partners, to contribute all of their
interests in the Partnership to Mack-Cali Realty, L.P. and to receive operating
partnership units in Mack-Cali Realty, L.P. in lieu of receiving such shares in
Mack-Cali Realty (such operating partnership units to be subject to the one-year
holding period before conversion or redemption that is customarily applicable to
such units that are issued to Persons contributing property in exchange
therefor).


                                      ARTICLE 6

                           BOOKS, RECORDS AND BANK ACCOUNTS


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<PAGE>

     6.1  BOOKS AND RECORDS.  At Partnership expense, the Managing General
Partner shall cause to be kept (at the office of the Partnership referred to in
Section 1.3.2) accurate, just and true books of account, in which shall be
entered fully and accurately each and every transaction of the Partnership.  The
books and records of the Partnership shall separately identify, and account for,
the Partnership's investment in, and the Profits, Losses, Gain or Loss or
Disposition and distributions attributable to, each of the Investments,
Properties and each Investment Entity.  The books shall be kept in accordance
with the Partnership's method of reporting for federal income tax purposes
(which shall be the accrual method of accounting).  Tax accounting elections,
including methods of depreciation and deduction or capitalization of interest,
taxes and insurance premiums during a construction period, if any, shall be made
as the Mack-Cali Limited Partner shall reasonably Approve.  The Partnership's
financial statements shall be prepared in accordance with generally accepted
accounting principles, consistently applied.

     6.2  BANK ACCOUNTS.  The funds of the Partnership shall be deposited in the
name of the Partnership, in such bank account or accounts as the Partners shall
reasonably Approve and reasonably direct from time to time.  Such funds shall be
invested by the Managing General Partner, or by the Mack-Cali Limited Partner at
its election made by giving notice to the Managing General Partner, in such high
quality, short term instruments as shall be reasonably Approved by the Partners
(which may or may not bear interest as the Partners shall reasonably Approve). 
Each of the Managing General Partner and any Co-General Partner, unless it has
become a Terminated Partner or has committed a Removal Default, shall be
individual signatories on all Partnership accounts, with the signature of any
such Partner or its designee being sufficient to effect withdrawals.


                                      ARTICLE 7

                          TRANSFERS OF PARTNERSHIP INTERESTS

     7.1  RESTRICTIONS ON TRANSFER.  (a)  Except as hereinafter provided, no
Partner shall be permitted to Transfer all or any part of its interest in the
Partnership or permit any Transfer of ownership interests in such Partner or, in
the case of the Highridge Partners, in the partners, members or shareholders of
such Partners (or in Persons owning, directly or indirectly through tiered
entities, an interest in such Partners).  Any attempted or actual Transfer shall
be null and void AB INITIO and of no force and effect.  Notwithstanding any
other provision of this Agreement, no interest in the Partnership or ownership
interest in any Partner may be pledged or hypothecated other than to its
Affiliates without the Approval of the Partners.

          (b)  Notwithstanding the foregoing, a Partner may Transfer all or part
of its interest in the Partnership, or allow the Transfer of ownership interests
in such Partner or in direct or indirect the partners, members or shareholders
thereof, as follows:

          7.1.1     To the Partnership or another Partner or a partner, member,
shareholder or Affiliate of a Partner;



                                          55
<PAGE>

          7.1.2     If the proposed transferor is a natural Person, by
succession or testamentary disposition upon his death;

          7.1.3     If the proposed transferor is a natural Person, to a trust
for the benefit of any Family Member with respect to the proposed transferor,
but only if the proposed transferor retains Control of the interest so
transferred;

          7.1.4     Any other Transfer which is Approved by the Partners
(excluding any Partner that is a Terminated Partner or who has committed a
Removal Default); and

          7.1.5     Ownership interests in a Highridge Partner (or in the direct
or indirect partners, members or shareholders of the Highridge Partners) may be
Transferred (but not pledged or hypothecated to Persons other than Affiliates of
the Highridge Partners) without restriction if, at all times after such Transfer
of interests: (a) John S. Long, Eugene S. Rosenfeld, Steven A. Berlinger and/or
their Family Members continue to own (directly or indirectly through tiered
Entities) over 50% of the interests in capital and profits of each Highridge
Partner, and (b) John S. Long, Eugene S. Rosenfeld and/or Steven A. Berlinger
continue to have voting control (whether directly or through tiered Entities) of
each Highridge Partner with respect to Major Decisions;

          7.1.6     The interests in the Partnership of the Mack-Cali Partners,
and ownership interests in the Mack-Cali Partners, may be Transferred without
restriction to a REIT (or other Entity) Controlled by the Mack-Cali Partners or
their Affiliates or successors;

The following shall be conditions to any Transfer of any interest in the
Partnership pursuant to this Article 7: (i) the transferee shall assume in
writing each of the obligations of the transferor to the Partnership; (ii) such
transferee shall agree in writing to be bound by each of the terms and
conditions of this Agreement; (iii) the transferee shall deliver to the
Partnership instruments of assumption and security reasonably Approved by the
Partners other than the Partner Group making the Transfer, for the payment and
performance of all obligations of or attendant to the interest so transferred
and assumed; and (iv) the requirements of Sections 7.4 and 7.5 shall be
satisfied.

     7.2  NO TAG-ALONG RIGHTS.  There shall be no right of any Partner or its
Affiliates to participate in any Transfer permitted by another Partner under
this Agreement.

     7.3  BANKRUPTCY OR DISSOLUTION OF PARTNERS.  The Bankruptcy or dissolution
(without reconstitution within sixty (60) days thereafter) of any General
Partner (whether or not the Managing General Partner) shall dissolve (and
require the liquidation of) the Partnership, except as otherwise provided in
Section 8.4.  The Bankruptcy or dissolution of a Limited Partner shall not
dissolve the Partnership.  Upon the occurrence of a Bankruptcy or the
dissolution (without reconstitution within sixty (60) days thereafter) of any
Partner, such Partner shall become a Terminated Partner under Section 7.9, and
the trustee in Bankruptcy, receiver or other legal representative of the
Bankrupt Partner or other legal representatives of the dissolved Partner, shall
have all the rights of an assignee of the Partner, including the same right
(subject to the same limitations) as the Bankrupt or dissolved Partner would
have had


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<PAGE>

under the provisions of Section 7.1 to assign its interest in the Partnership,
subject to the substitution rules of Section 7.4 and the provisions of
Section 7.9.

     7.4  SUBSTITUTION OF PARTNER.   Subject to the restrictions and Approval
rights of the Partners as set forth in Section 7.1 and the provisions of Section
7.5, the assignee of any Transfer by a Partner (a "Partner Assignee") shall
become a substitute Partner only if (i) the assignor Partner so provides in an
instrument of assignment, (ii) the Partner Assignee agrees in writing to be
bound by the provisions of this Agreement and of the Articles and any amendments
hereto and thereto and executes and delivers a copy of this Agreement
(appropriately modified to take account of the Transfer), and (iii) each Partner
Approves such substitution, which Approval may be given or withheld in its
reasonable discretion.  If the foregoing conditions (and the other provisions of
this Article 7) are satisfied, the Partner Assignee shall become a substitute
Partner upon payment to the Partnership of all costs and expenses of reviewing
the instrument of assignment, if appropriate, and, if required by law, an
amendment to the Certificate to reflect such substitution.  In such event, if
and as required by law, the Managing General Partner shall prepare or cause to
be prepared an amendment to the Certificate to be signed by the Managing General
Partner and, to the extent required, by the Partner Assignee. The Managing
General Partner shall attend to the due execution and filing of an amendment to
the Certificate, if such amendment is required.  Unless admitted to the
Partnership as a Partner as provided in this Agreement, no Person shall be
considered a Partner, and the Partnership, each Partner and any other Persons
having business with the Partnership need deal only with the Partners so
admitted and shall not be required to deal with any other Person by reason of an
assignment or pledge by a Partner (or realization of a pledge) or by reason of
the death of a Partner (the Partners hereby confirming that no pledge or
hypothecation of interests in the Partnership or interests in the Partners shall
be permitted to Persons who are not Affiliates of a Partner without the Approval
of the Partners).  In the absence of the substitution of a Partner for a
deceased Partner as provided in Section 7.1(a) or this Section 7.4, any payment
to the executors, administrators or personal representatives of such deceased
Partner shall acquit the Partnership of all liability with respect to such
payment to any other Persons who may be interested in such payment by reason of
the death of such Partner.  A Partner Assignee of an interest in the Partnership
who is not admitted as a substitute Partner as provided in this Section 7.4
shall be entitled to receive the economic benefits of the interest purported to
be Transferred, but shall not be considered a Partner for any purposes and shall
have no Approval rights under this Agreement and none of the rights of a Partner
under this Agreement or under the Act.

     7.5  ADDITIONAL TRANSFER RESTRICTIONS.

          7.5.1     Notwithstanding any provision of this Agreement to the
contrary, and subject to the limitations in Sections 7.1 through 7.4, a
Partner's ability to Transfer all or any portion of its Partnership interest, or
ownership interests in such Partner, or, in the case of any Highridge Partner,
to permit the Transfer of direct or indirect (through one or more
intermediaries) ownership interests in such Partner relating specifically or
generally to such Partner's interest in the Partnership, shall be subject to the
following additional restrictions:


                                          57
<PAGE>

                    7.5.1.1   No Transfer of all or any portion of such interest
shall be effective unless (i) such Transfer complies with the Transfer
restrictions in all agreements to which the Partnership, any Investment Entity
or such Partner is a party, and (ii) such interest is registered under the
Securities Act and any applicable state securities laws, or an exemption from
registration is available, and, for any direct Transfer of an interest in the
Partnership, the Partnership shall have received an opinion of counsel,
reasonably Approved by the Partners other than the Partner making the Transfer,
to such effect (unless the requirement that the Partnership receive such legal
opinion is waived by the Approval of the Partners other than the Partner making
the Transfer);

                    7.5.1.2   No Partner shall be permitted to Transfer any
portion of its Partnership interest or take any other action which would cause
the Partnership to be (i) treated as a "publicly traded partnership" within the
meaning of Code Section 7704 or (ii) classified as a corporation (or as an
association taxable as a corporation) within the meaning of Code Section
7701(a);

                    7.5.1.3   No Partner shall be permitted to Transfer all or
any portion of its Partnership interest or to take any other action (including,
in the case of any Partner which is a corporation, limited liability company or
partnership or a partner, member or shareholder of a partnership or limited
liability company which is a Partner, a Transfer of any interest in such
partnership, limited liability or corporation or in the partners, members or
shareholders thereof) which would result in a termination of the Partnership as
a partnership within the meaning of Code Section 708(b)(1)(B) (a "Tax
Termination") unless such Partner indemnifies the other Partners against any
adverse tax consequences suffered by the Partnership as a result thereof;

                    7.5.1.4   Unless arrangements concerning withholding are
reasonably Approved by the Partners other than the Partner making the Transfer
(if such withholding is required of the Partnership), no Partner shall be
permitted to Transfer all or any portion of its interest in the Partnership to
any Person, unless such Person is a United States Person as defined in Code
Section 7701(a)(30) and is not subject to withholding of any federal tax; and

                    7.5.1.5   No Partner shall be permitted to Transfer all or
any portion of its Partnership interest if such Transfer will (i) cause the
assets of the Partnership or any Investment Entity to be deemed to be "plan
assets" under ERISA or its accompanying regulations or the Code or (ii) result
in any "prohibited transaction" under ERISA or its accompanying regulations
affecting the Partnership or any Investment Entity.

          7.5.2     Any purported transfer or any other action taken in
violation of this Section 7.5 shall be void AB INITIO.

     7.6  TRANSFER INDEMNIFICATION AND CONTRIBUTION PROVISIONS.

          Each Partner shall indemnify, defend and hold the Partnership and each
other Partner, and the shareholders, partners, employees, agents, members and
Affiliates thereof, harmless from any Liabilities in any way arising from the
failure of a Transfer of any interest


                                          58
<PAGE>

in the Partnership (including any Transfer of an interest in any partners,
members or shareholders of the indemnifying Partner, or in the direct or
indirect partners, members or shareholders therein, and regardless of whether
occurring before or after the date of this Agreement) to comply with all
applicable federal and state securities laws, including all registration or
qualification requirements and anti-fraud requirements, or arising from the
impact of such Transfer upon compliance of the Partnership and its Partners with
those securities laws in connection with any previous Transfer of an interest in
the Partnership.  Should the preceding indemnity be unenforceable to any extent,
then, to such extent the Partner otherwise required to so indemnify the
Partnership and the other Partners shall be obligated to contribute to any loss,
liability, cost or expense resulting from the actions, omissions or events set
forth in the above indemnification to the extent of its responsibility therefor,
as determined by the trier of fact.

     7.7  BASIS FOR RESTRICTIONS AND REMEDIES.  The Partners acknowledge that
the relationship of each Partner to the other Partners is a personal
relationship and that the restrictions on the power of each Partner to withdraw
or Transfer its interest in the Partnership or permit the Transfer of ownership
interests in such Partner (and in indirect and direct owners of the Highridge
Partners), and the remedies of this Agreement, including Section 7.9 (and the
purchase and redemption rights contained therein), (i) are necessary to preserve
such personal relationship and safeguard the investment of the other Partners in
the Partnership, (ii) were a material inducement to the other Partners entering
into this Agreement, and (iii) shall be enforceable notwithstanding the
Bankruptcy of any Partner or its Affiliates, or any applicable prohibition
against restraints on alienation.

     7.8  REPRESENTATIONS, WARRANTIES AND COVENANTS.

          Each Partner hereby represents and warrants to each of the other
Partners as follows:

          7.8.1     Such Partner, if not a natural Person, is duly formed and
validly existing under the laws of the jurisdiction of its organization with
full power and authority to enter into this Agreement and to conduct its
business to the extent contemplated in this Agreement;

          7.8.2     This Agreement has been duly authorized, executed and
delivered by such Partner and constitutes the valid and legally binding
agreement of such Partner, enforceable in accordance with its terms against such
Partner, except as such enforceability may be limited by bankruptcy, insolvency,
moratorium and other similar laws relating to creditors' rights generally, by
general equitable principles and by any implied covenant of good faith and fair
dealing;

          7.8.3     The execution and delivery of this Agreement by such Partner
and the performance of its duties and obligations hereunder do not result in a
breach of any of the terms, conditions or provisions of, or constitute a default
under, any indenture, mortgage, deed of trust, credit agreement, note or other
evidence of indebtedness, or any lease or other agreement, or any license,
permit, franchise or certificate to which such Partner or any of its Affiliates
is a party or by which any of them are bound or to which any of their properties
are 


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<PAGE>

subject, or require any authorization or approval under or pursuant to any of
the foregoing, or violate any statute, regulation, law, order, writ, injunction,
judgment or decree to which such Partner is subject;

          7.8.4     Neither such Partner nor any of its Affiliates is in default
(nor has any event occurred which with notice, lapse of time, or both, would
constitute a default) in the performance of any obligation, agreement or
condition contained in any indenture, mortgage, deed of trust, credit agreement,
note or other evidence of indebtedness or any lease or other agreement, or any
license, permit, franchise or certificate, to which it is a party or by which it
is bound or to which any of its properties are subject, nor is it in violation
of any statute, regulation, law, order, writ, injunction, judgment or decree to
which it is subject; but only, in each case, if such default or violation would
materially and adversely affect such Partner's ability to carry out its
obligations under this Agreement;

          7.8.5     There is no litigation, investigation or other proceeding
pending or, to the knowledge of such Partner, threatened against such Partner or
any of its Affiliates which, if adversely determined, would materially and
adversely affect such Partner's ability to carry out its obligations under this
Agreement, and, to the knowledge of such Partner and its Affiliates, (i) there
is no lawsuit pending against such Partner or its Affiliates alleging fraud
against them and (ii) there is no criminal investigation or indictment pending
against such Partner or its Affiliates;

          7.8.6     To the knowledge of such Partner and such Partner's
Affiliates, no consent, approval or authorization of, or filing, registration or
qualification with, any court or governmental authority on the part of such
Partner is required for the execution and delivery of this Agreement by such
Partner and the performance of its obligations and duties hereunder;

          7.8.7     Such Partner is acquiring its interest in the Partnership
for investment purposes and without a view toward its resale or distribution;

          7.8.8     Such Partner is sophisticated in real estate transactions,
has been granted access to such financial and other material information
concerning the Partnership, its purchase of the initial Investments and
Properties, the Initial Development Plan and all Due Diligence Materials with
respect to the foregoing as it has requested or may require in connection with
its investment in the Partnership, is able, either directly or through its
agents and representatives, to evaluate such information and any Due Diligence
Materials provided or made available to it from time to time hereunder, and is
able to bear the financial risk of loss presented by an investment in the
Partnership (which includes the risk of loss of such Partner's entire
investment), particularly in light of the risks that would be disclosed by a
detailed analysis of the Initial Development Plan and any Due Diligence
Materials with respect to the initial Investments or Properties (its access to
which, to the full extent such Partner has requested, hereby is confirmed by
such Partner) and the fact that the initial Investments are subject to
unpredictable real estate values, and the other risks of owning equity or debt
investments concerning real estate;


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<PAGE>

          7.8.9     Such Partner has consulted with independent counsel of its
choice and recognizes that, although Battle Fowler LLP ("BFLLP") serves as
special counsel to Affiliates of both Partner Groups on unrelated matters, BFLLP
has not represented the Highridge Partners or their Affiliates in connection
with the Partnership, is acting as the attorney for only the Mack-Cali Partners
in connection with the preparation and execution of this Agreement and the
formation of the Partnership and Investment Entities, and has not provided tax
or other legal advice to the Highridge Partners or their Affiliates in
connection therewith (the Highridge Partners and their Affiliates are relying on
Mark Abramson, Esq. as their counsel in connection therewith).  Each Partner
hereby waives all potential conflicts of interest resulting from BFLLP's
representation of Mack-Cali Partners hereunder, of the Highridge Partners (or
their Affiliates) and the Mack-Cali Partners (or their Affiliates) in unrelated
transactions, and resulting from  BFLLP's or Mark Abramson's representation of
the Partnership or any Investment Entity in the future on matters for which
BFLLP or Mark Abramson is retained as counsel by the Partnership or such
Investment Entity, PROVIDED, HOWEVER, that BFLLP shall not represent the
Partnership, any Partner, or any Partner's Affiliates in any adversarial
controversy among the Partnership, and/or any Partner or any Partner's
Affiliates (and no conflict waiver has been issued with respect to such
representation by BFLLP or by any Partner or its Affiliates in any such
controversy);

          7.8.10         Such Partner is aware that transfers of interests in
the Partnership and within such Partner are subject to the restrictions set
forth in Article 7 hereof and that an investment in the Partnership is a
long-term investment, without liquidity;

          7.8.11         Such Partner is not relying upon any of the other
Partners, nor any of their Affiliates as such Partner's agent to assess the
merits or risks of this investment, and such Partner understands that no
projection of performance shall be actionable if not achieved except in the
circumstances specifically set forth in this Agreement;

          7.8.12         None of the other Partners is acting as the
representative or agent or in any other capacity, fiduciary or otherwise, on
behalf of such Partner in connection with the Partnership, any Investment
Entity, the Investments or the other matters referred to in this Agreement;

          7.8.13         None of the other Partners nor any of the other
Partner's agents or representatives has made any binding representations,
warranties, projections or assurances to such Partner with respect to the
Partnership, the Investments, the performance of the Partnership and the
Investments, the safety or the risks involved and/or the tax or economic
consequences thereof;

          7.8.14         Such Partner is aware that the other Partner and/or the
other Partner's Affiliates now and in the future will be, and in the past have
been, engaged in businesses which are competitive with that of the Partnership
and/or the Investments, and that, no Partner or its Affiliates is required to
bring any Investments opportunities to the attention of the Partnership or any
Partner (or their Affiliates) for investment. 


                                          61
<PAGE>

          7.8.15         Such Partner is aware that compensation and
reimbursements may be payable to Affiliates of the Partners by the Partnership,
as addressed in this Agreement, including pursuant to the Approved Budget
attached as Exhibit C;

          7.8.16         Such Partner understands that the federal, state and
local tax liability of such Partner with respect to the taxable income and gain
allocated to such Partner hereunder for any year may exceed the cash
distributions from the Partnership to such Partner and, if Tax Payment Loans are
unavailable for any reason, such Partner may have to look to sources other than
distributions from the Partnership to pay such tax;

          7.8.17         Such Partner understands that it may lose its Approval
rights (and be subject to having such Partner's interest purchased by the
Partnership in certain circumstances) under Section 7.9 and the other provisions
of this Agreement if the Partner becomes a Terminated Partner or has committed a
Removal Default or Performance Default, and that it has waived its rights to a
trial by jury in any dispute concerning this Agreement or the Partnership under
Section 9.4;

          7.8.18         Except as specifically provided in this Section 7.8,
such Partner is not relying upon any representation or warranty of any other
Partner, the Partnership, any Investment Entity or any of their respective
Affiliates, express or implied, oral or written, other than those contained in
this Agreement;

          7.8.19         No Partner is required to cause the Controlling Persons
of such Partner to devote any specific portion of their time to Partnership
business other than as necessary to fulfill such Partner's obligations under
this Agreement, and such Controlling Persons are expected to spend substantial
amounts of their time on activities that are unrelated to the Partnership; 

          7.8.20         Such Partner understands that the Partnership and its
Partners are relying on the accuracy of the representations set forth in this
Section 7.8 (or contained elsewhere in this Agreement) in entering into this
Agreement without requiring that the interests in the Partnership be registered
under federal or state securities laws; and

          7.8.21         Each Partner Group represents that the ownership
interests in such Partner Group (and, in the case of the Highridge Partners, in
the direct and indirect owners thereof through all tiered Entities) is as set
forth on Exhibit E, and each of the Highridge Partners represents that the
partnership agreement or operating agreement pursuant to which each of the
Highridge Partners (and each of the direct and indirect, through one or more
intermediaries, partners or members thereof) is operated will at all times
during the term of this Agreement contain Transfer restrictions that prohibit a
violation of the Transfer restrictions contained in this Agreement.

     7.9  TERMINATED PARTNER; REMOVAL DEFAULTS; PERFORMANCE DEFAULTS; PURCHASE
RIGHTS; CONTROL CHANGE NOTICES.

          7.9.1     When a Partner becomes a Terminated Partner or is a Partner
in a Partner Group in which any Partner has committed a Removal Default, such
Partner shall


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<PAGE>

automatically cease to have any Approval or voting rights under this Agreement
with respect to the Partnership and the Investment entities (and each Property
and Investment), except as provided in Section 5.1.6.1.  When a Partner becomes
a Terminated Partner, (i) such Partner shall cease to be a General Partner as
provided in Section 7.9.5, (ii) upon the election of the Partner Group who is
not the Terminated Partner (the "Electing Partner"), given by notice from the
Electing Partner to the Terminated Partner (a "Purchase Notice") at any time
after a Partner becomes a Terminated Partner, the Terminated Partner shall sell
the Terminated Partner's entire interest in the Partnership to the Partnership
(or to the Electing Partner Group or its designee as set forth in Section
7.9.4), at a price (the "Buy-Out Price") to be determined as hereinafter
provided.  The Electing Partner shall notify the Terminated Partner in writing
of its election (exercisable at any time after a Partner becomes a Terminated
Partner) under this clause (ii); and (iii) the other provisions applicable by
reason of becoming a Terminated Partner (including Sections 7.9.5 and 8.1.1)
shall apply.

     If a Purchase Notice has been given under clause (ii) above, the Electing
Partner and the Terminated Partner shall attempt to agree upon the Buy-Out Price
of the Terminated Partner's entire interest in the Partnership.  If such
agreement is not reached within thirty (30) days after the notice of election is
given, the Terminated Partner, on the one hand, and the Electing Partner, on the
other hand, shall each, within ten (10) additional days, appoint an M.A.I.
accredited appraiser by notice to the other.  The two appraisers so appointed
shall, within five (5) additional days, appoint a third M.A.I. accredited
appraiser and the three appraisers shall meet to determine the gross proceeds
which would have been received by the Partnership if the Partnership and each
Investment Entity sold, on the Termination Date, all of their assets (other than
interests in each other) for cash at their then fair market value, less all
costs and expenses of sale, including closing costs, real estate brokerage
commissions and fees, title insurance premiums and escrow fees, appropriate
reserves and legal and other expenses incident to such sale (the "Appraised
Value").  The Appraised Value shall equal the amount determined by the three
appraisers, or if there is a dispute among the three appraisers as to value, the
value established by the third appraiser shall be the Appraised Value (but the
Appraised Value shall not exceed the highest, or be less than the lowest, value
established by the other two appraisers).  The cost of such appraisal shall be
borne 50% by the Electing Partner and 50% by the Terminated Partner.  The
Buy-Out Price shall equal (i) the amount the Terminated Partner would receive
under Sections 4.1 and 4.2 if all of the assets of the Partnership and each
Investment Entity (other than interests in each other) were sold to a third
party for the Appraised Value and the Partnership were liquidated, after paying
creditors and withholding therefrom any amounts payable by the Terminated
Partner under Sections 4.3.2, 5.5.3 and 9.2 and the other provisions of this
Agreement, minus (ii) in the case of a Major Default, 10% of the Buy-Out Price
(determined before adjustment thereof under this clause (ii)).  If the
Partnership redeems the Terminated Partner, there shall be no discount in the
Buy-Out Price for any encumbrances to which such redeemed interest is subject,
but the Partnership shall apply the proceeds of such redemption to satisfy such
encumbrances instead of making distributions thereof to the Terminated Partner
to the extent required by law (such distributions being deemed for all purposes
to have been made to the Terminated Partner by the Partnership and then paid by
the Terminated Partner to satisfy such encumbrances).  If the interest of the
Terminated Partner is purchased by the Electing Partner (or its designee), and
not by the Partnership, pursuant to Section 7.9.4, the Buy-Out Price for the
Terminated 


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<PAGE>

Partner's interest as determined above shall be reduced to the extent the
Electing Partner or its designee acquires the Terminated Partner's interest
subject to (or assumes) the encumbrances on such interest at the closing. 
Within ten (10) days following the determination of the Buy-Out Price, the
Electing Partner may elect, in its sole and absolute discretion, by notice to
the Terminated Partner, to rescind any notice pursuant to this Section 7.9.1, in
which event the right to elect to cause the Terminated Partner to sell its
interest to the Partnership or to the other Partner (or its designee) pursuant
to this Section 7.9.1 as a result of the event(s) which led to the Purchase
Notice (but not any future event which would authorize any such notice) shall no
longer be of any force or effect.

          7.9.2     The purchase and sale of the Terminated Partner's interest
in the Partnership pursuant to this Section 7.9 shall be consummated on or
before the thirtieth (30th) day following the date upon which the Buy-Out Price
was determined (whether by agreement of the Terminated Partner and the Electing
Partner or by appraisal), at the offices of the Partnership, or at such other
time and place as may be agreed upon by the Terminated Partner and the Electing
Partner.  At the closing of such purchase and sale (the "Closing Date"), the
Terminated Partner shall execute and deliver to the Partnership (or the Electing
Partner or its designee, as appropriate) such instruments of assignment,
conveyance and transfer as the Electing Partner may reasonably deem necessary or
appropriate to consummate the purchase and sale, and the purchaser shall pay
cash to the Terminated Partner in the amount of the Buy-Out Price (adjusted for
encumbrances to the extent provided in Section 7.9.1).

          7.9.3     Following the Closing Date, (a) the Partnership shall
indemnify and hold the Terminated Partner harmless from and against all
liabilities of the Partnership arising from acts taken or omitted to be taken by
the Partnership after the date of the closing of the sale of the Terminated
Partner's interest to the Partnership (or to the Electing Partner or its
designee, as appropriate), and (b) the indemnity and liability provisions of
Sections 3.5.4 and 5.5 shall continue to apply with respect to the Terminated
Partner and its Affiliates. 

          7.9.4     The Partnership shall fund the purchase of the Terminated
Partner's interest pursuant to this Section 7.9 by borrowings or, if the
remaining Partner so Approves, by additional Capital Contributions from the
Electing Partner, such borrowings or Capital Contributions to occur when needed
to make the required payment of the Buy-Out Price.  If the Electing Partner so
Approves, the interest of the Terminated Partner shall be purchased by the
Electing Partner (or its designee, which designee shall be admitted as a Partner
hereunder simultaneously with the closing of such purchase of the Terminated
Partner's interest in order to avoid a termination of the Partnership, if the
remaining Partner so elects by giving notice thereof to the Terminated Partner
prior to such closing).

          7.9.5     (a)  The Mack-Cali Limited Partner shall have the right to
appoint a Co-General Partner by notice to the Highridge Partners at any time
after it has issued (or simultaneously with its issuance of) a Control Change
Notice to the Highridge Partners under this Section  7.9.5, and such Co-General
Partner shall automatically be admitted as a general partner of the Partnership
under the Act, and become a General Partner of the Partnership under this
Agreement, upon the Co-General Partner and each other Mack-Cali Partner
executing and delivering to all of the Partners an amendment to this Agreement
pursuant to which the Co-General Partner agrees to be bound by the terms of this
Agreement (such


                                          64
<PAGE>

amendment need not be executed or Approved by any Highridge Partner in order to
be valid).  The interest in the Partnership granted to any Co-General Partner
shall be as specified by notice to the Highridge Partners from the Mack-Cali
Limited Partner and shall reduce the interest in the Partnership of the
Mack-Cali Limited Partner accordingly.  Any Co-General Partner shall be an
Affiliate of the Mack-Cali Limited Partner.  

          At any time after the Managing General Partner has been deemed to be a
Terminated Partner or to have committed a Removal Default under Section 5.9, the
Mack-Cali Limited Partner may elect, effective immediately upon the Mack-Cali
Limited Partner giving notice to the Highridge Partners, that the Co-General
Partner shall become the Managing General Partner and shall assume the Managing
General Partner's authority and responsibility in connection with the operation
of the Partnership (but the Managing General Partner shall retain Approval
rights to the extent set forth in Section 5.1.6.1).  Such assumption shall be
effective, the Managing General Partner shall cease to be the Managing General
Partner and shall have its entire interest reconstituted from a General
Partner's interest to that of a Limited Partner having equivalent distribution
and tax allocation rights to that previously held by it as a General Partner,
the Co-General Partner shall become the Managing General Partner, and the
Partnership shall be reconstituted and continued and shall not dissolve, upon
the later to occur of (i) five (5) Business Days after the receipt by the
Managing General Partner of such notice from the Mack-Cali Limited Partner that
it has elected such assumption by the Co-General Partner pursuant to this
Section 7.9.5 (together with any notice described in Section 7.9.5(b), a
"Control Change Notice"), or (ii) if the Managing General Partner in good faith
denies the assertion that it is a Terminated Partner or that it has committed a
Removal Default by giving notice of such denial to the Mack-Cali Limited Partner
within five (5) Business Days after receipt by the Managing General Partner of a
Control Change Notice, the Determination Date for purposes of this Section
7.9.5, as determined pursuant to the procedure described in Section 5.9. 
Notwithstanding anything to the contrary contained in this Agreement, the
Co-General Partner shall have the right to cause the Partnership to borrow money
at any time pursuant to any loan agreement (and/or other documents entered into
by the Managing General Partner and/or its Affiliates in connection with such
agreement) that has been Approved by the Managing General Partner prior to the
Managing General Partner becoming a Terminated Partner or being deemed to have
committed a Removal Default under this Agreement, even if under such agreement
(and/or such other documents), the Managing General Partner and/or its
Affiliates would have personal liability with respect to the repayment of such
borrowings (but the indemnity provisions of Article 5 shall continue to apply
with respect to the Highridge Partners and any such borrowing).

                    (b)  If the Managing General Partner is deemed to have
committed a Performance Default with respect to a Property or Investment under
Section 5.9, and the Mack-Cali Limited Partner has appointed a Co-General
Partner as provided in this Section 7.9.5, such Co-General Partner shall be
entitled to assume complete control over the construction, stabilization,
operation and disposition of such Property or Investment.  If the Mack-Cali
Limited Partner has not appointed a Co-General Partner, the Mack-Cali Limited
Partner shall nonetheless have the rights set forth in Section 5.10(ii) with
respect to such Property or Investment.  The Mack-Cali Limited Partner may give
notice to the Managing General Partner at any time after it in good faith
believes that the Managing General Partner


                                          65
<PAGE>

has committed a Performance Default stating that it believes that such
Performance Default has occurred (such notice shall constitute a "Control Change
Notice" for purposes of this Agreement).  The change in control described in
this Section 7.9.5(b) (and the rights of the Mack-Cali Limited Partner under
Section 5.10(ii) to control certain actions and decisions) shall be effective
upon the later to occur of (i) five (5) Business Days after the receipt by the
Managing General Partner of the Control Change Notice with respect to such
Performance Default, or (ii) if the Managing General Partner in good faith
denies the assertion that it has committed a Performance Default by giving
notice of such denial to the Mack-Cali Limited Partner within five (5) Business
Days after receipt by it of a Control Change Notice, the Determination Date for
purposes of this Section 7.9.5, as determined pursuant to the procedure
described in Section 5.9.

          7.9.6     The Partners have agreed to the remedies contained in this
Section 7.9 for the reasons set forth in Section 7.7.


                                      ARTICLE 8

                          TERM, DISSOLUTION AND TERMINATION

     8.1  EVENTS OF DISSOLUTION.  The Partnership shall continue until DECEMBER
31, 2005, or such later date as is Approved by the Partners; PROVIDED, HOWEVER,
that dissolution and liquidation shall occur prior to that date upon the
occurrence of any one of the following events:

          8.1.1     An election to dissolve the Partnership being made in
writing by the Approval of the Partners other than any Terminated Partner or
Partner who has committed a Removal Default;

          8.1.2     The sale for cash, exchange or other disposition of all or
substantially all of the assets of the Partnership and each Investment Entity;

          8.1.3     The Bankruptcy or dissolution (without reconstitution within
sixty (60) days thereafter) of any General Partner, unless the Partnership is
reconstituted and continued as provided in Section 8.4; or

          8.1.4     Any other event resulting in the dissolution or liquidation
of the Partnership that is expressly described in this Agreement.

     8.2  LIMITATION ON DISSOLUTION.  Until the dissolution of the Partnership
otherwise occurs, no Partner shall voluntarily retire, resign or withdraw from
the Partnership, take any step voluntarily to dissolve itself or voluntarily
cause a dissolution of the Partnership, except as provided in this Agreement
(including Section 8.1).

     8.3  LIQUIDATION AND WINDING UP.



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<PAGE>

          8.3.1     If the Partnership is dissolved for any reason and is not
reconstituted pursuant to Section 8.4.1, each of the Mack-Cali Limited Partner
and the Managing General Partner, unless such Partner is a Terminated Partner or
has committed a Removal Default (collectively, the "Liquidator") shall commence
to wind up the affairs of the Partnership, to liquidate and sell the Properties
and to liquidate the Investment Entities in an orderly manner as reasonably
Approved by the Partners (subject to Section 5.10(i)) as soon as is practicable
thereafter.  A third-party liquidator may be appointed if Approved by the
Partners.  Any Liquidator other than the Partners shall have sufficient business
expertise and competence to conduct the winding up and termination of the
business of the Partnership.  No Liquidator who is a Partner shall be paid any
compensation or fee for conducting the liquidation of the Partnership or any
Investment Entity.  Notwithstanding anything to the contrary contained in this
Agreement, if one Partner Group has the unilateral right (without the Approval
of the other Partner Group) to cause the sale or other disposition of a Property
or Investment under any provision of this Agreement, such Partner Group shall be
the Liquidator with respect to such Property or Investment and may sell or
otherwise dispose of such Property or Investment on such terms as shall be
Approved by such Partner Group (whether during the term of the Partnership or in
liquidation), subject, however, to the restrictions on transfers of such
Property or Investment to Affiliates of such Partner Group that are contained in
this Agreement (including Section 5.11).

          8.3.2     The Liquidator shall proceed with such liquidation in as
expeditious a manner as is reasonably practicable.  The holders of interests in
the Partnership shall continue to share income and losses during the period of
liquidation in accordance with Article 4.

          8.3.3     If a Partner or an Affiliate of a Partner desires to
purchase any of the Partnership's remaining assets, the price, terms and
conditions of such purchase shall be subject to the Approval of the Partners and
the restrictions described in this Agreement (including Section 5.11) on
transactions with Affiliates.

          8.3.4     Except as expressly provided in this Article 8, any
Liquidator which is not a Partner shall have and may exercise all of the powers
conferred upon the Managing General Partner under the terms of this Agreement
(but subject to all of the applicable limitations, contractual and otherwise,
upon the exercise of such powers), to the extent necessary or desirable in the
good faith judgment of the Liquidator to carry out the duties and functions of
the Liquidator hereunder for and during the Liquidation Period.

          8.3.5     If (i) the Partnership is dissolved for any reason and is
not reconstituted and continued pursuant to Section 8.4.1, (ii) all General
Partners have become Bankrupt or been dissolved, and (iii) within ninety (90)
days following the date of dissolution a Liquidator or successor Liquidator has
not been appointed by the remaining Partners pursuant to Section 8.3.1, any
interested party shall have the right to seek judicial supervision of the
winding up of the Partnership pursuant to the Act.

          8.3.6     After making payment or provision for payment of all debts
and liabilities of the Partnership and all expenses of liquidation, the
Liquidator shall establish, for a period not to exceed twelve (12) months after
the date the liquidation is complete, such cash


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<PAGE>

reserves as are reasonably necessary for any foreseeable, contingent or
unforeseen liabilities or obligations of the Partnership, the Investment
Entities or the Partners or their Affiliates with respect to the Partnership
obligations.

          8.3.7     After the liquidation of the Partnership or the acquisition
of an Investment or Property from the Partnership by a Partner Group, the
Partners and/or their Affiliates may employ Persons who previously were employed
by the Partnership or an Investment Entity, PROVIDED, HOWEVER, that neither the
Mack-Cali Partners nor the Highridge Partners may engage the services of any
Partnership or Investment Entity employee (other than any on-site employee of a
Property in which all of the interests of the Partners have been acquired by one
Partner Group if such employee has no responsibilities with respect to any other
Property owned by the Partnership or an Investment Entity, E.G., a day porter)
except upon six months' prior notice to the other (whether within the first
twelve (12) months after the liquidation of the Partnership or otherwise), and
no employee of the Partnership shall render services simultaneously to the
Partnership or an Investment Entity and to any Partner or its Affiliates without
the Approval of both the Mack-Cali Partners and the Highridge Partners.

          8.3.8     This Section 8.3.8 shall apply if Partnership assets or
Investment Entity assets are sold for consideration that includes notes payable
to the Partnership (or payable to an Investment Entity) or interests in a REIT,
and the provisions of this Section 8.3.8 shall apply notwithstanding any other
provision of this Agreement.

          (a)  To the extent such consideration includes notes payable, such
notes payable shall, upon receipt by the Partnership or any Investment Entity,
be distributed in-kind to the Partners.  The Gross Asset Value of such notes at
the time of such distribution shall be the principal amount payable under such
notes if held to maturity.  Each Partner shall have an undivided interest in
such notes equal to the percentage obtained by multiplying the Gross Asset Value
of such notes by a fraction whose numerator equals the amount such Partner would
receive under Sections 4.1 and 4.2 if cash equal to such Gross Asset Value were
paid to the Partner pursuant to such Sections as loan repayments or
distributions instead of such notes, and whose denominator equals such Gross
Asset Value.  The Partner shall own such notes pursuant to a tenancy-in-common
agreement to be reasonably Approved by the Partners at the time of such
disposition (such tenancy-in-common agreement shall be prepared at Partnership
expense).

          (b)  To the extent such consideration consists of interests in a REIT,
such interests shall, upon receipt by the Partnership or any Investment Entity,
be distributed in-kind to the Partners except as otherwise set forth below in
Section 8.3.8(c).  The Gross Asset Value of such interests at the time of such
distribution ("REIT Share Value") shall be:

                    (i)  in the case of publicly traded stock, the share
     price at the time of such receipt by the Partnership multiplied by the
     number of shares of stock received by the Partnership;

                    (ii) in the case of interests that are convertible into
     publicly traded stock, the share price (at the time of the receipt by
     the



                                          68
<PAGE>

     Partnership of such interests) of such publicly traded stock multiplied by
     the number of shares of such stock into which such interests are
     convertible;

                    (iii)     in the case of interests that are neither
     publicly traded nor convertible into publicly traded stock, the value
     of the property of the Partnership or Investment Entity disposed of to
     the REIT as set forth in the documents pursuant to which such
     disposition was made to the REIT (or if no such value is set forth in
     such documents, the fair market value of such property determined
     under Section 5.10(iii), such determination to be made without regard
     to any restrictions to which such interests are subject or any
     minority or liquidity discount with respect thereto).

Each Partner shall receive a distribution of such portion of the interests in
the REIT equal to the percentage obtained by multiplying the aggregate REIT
Share Value of all interests in the REIT that are received by the Partnership or
Investment Entity by a fraction (A) whose numerator equals the amount such
Partner would receive under Sections 4.1 and 4.2 if cash equal to such aggregate
REIT Share Value were paid to the Partners pursuant to such Sections as loan
repayments or distributions instead of such interests in the REIT, and (B) whose
denominator equals such aggregate REIT Share Value.

          (c)  Notwithstanding the provisions of Section 8.3.8(b), distributions
of interests in a REIT shall not be required (unless otherwise Approved by the
General Partners) for so long as such distribution is prohibited by the
documents pursuant to which such interests were received (the Partners
conducting the transaction with the REIT shall make reasonable, good faith
attempts to avoid such a prohibition).  If the interests in the REIT are not
distributed to the Partners at the time of their receipt by reason of the
operation of this Section 8.3.8(c), (I) such interests shall nevertheless be
deemed to have been distributed to the Partners, for all purposes of this
Agreement, at the time of their receipt by the Partnership or Investment Entity
in proportion to the percentage thereof that each Partner would receive if such
interests were distributed at the time receipt under Section 8.3.8(b), and (II)
upon the ultimate distribution of such interests in the REIT or the proceeds
from the sale or other disposition thereof by the Partnership, each Partner
shall receive the percentage thereof determined pursuant to clause (I) of this
Section 8.3.8(c) (regardless of the value of such interests at the time of such
ultimate distribution or the amount of the proceeds from the sale or other
disposition thereof).

          (d)  The Partners conducting the transaction with the REIT shall use
reasonable good faith efforts to structure any disposition of Partnership or
Investment Entity assets for notes or interests in a REIT in a manner that will
facilitate compliance with this Section 8.3.8.


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<PAGE>

     8.4  RECONSTITUTION AFTER BANKRUPTCY OR DISSOLUTION OF A GENERAL PARTNER.

          8.4.1     Upon the Bankruptcy or dissolution (without reconstitution
within sixty (60) days thereafter) of any of the General Partners, the
Partnership shall be dissolved and liquidated unless within ninety (90) days
subsequent to such event the remaining Partners (other than Partners in the same
Partner Group as the Bankrupt General Partner) so elect, by giving notice to all
Partners, to reconstitute the Partnership and to continue the business of the
Partnership.  If such election is made, then (i) the Partnership shall not be
dissolved and liquidated; (ii) the Partnership and the business of the
Partnership may be reconstituted and continued, under and pursuant to the
provisions of this Agreement; (iii) the Terminated Partner's interest in the
Partnership may be purchased as set forth in Section 7.9, and upon such
Bankruptcy or dissolution, the other rights against a Terminated Partner under
Section 7.9 shall also apply to the extent applicable; and (iv) the Certificate
shall be amended to reflect such continuation.

     8.5  DISTRIBUTION UPON DISSOLUTION AND CAPITAL ACCOUNT ADJUSTMENTS.   Upon
dissolution of the Partnership without reconstitution as permitted by this
Article 8, the Partnership's assets shall be sold or otherwise disposed of to
third parties as directed by the Liquidator (subject to Sections 5.10, 5.11 and
8.3.8), and, after paying or providing for liabilities owing to creditors and
the establishment of such reserves as are reasonably necessary for foreseeable,
contingent or unforeseen liabilities or obligations of the Partnership, the
Investment Entities, or the Partners or their Affiliates with respect to
Partnership or Investment Entity obligations for a period of up to twelve (12)
months after the liquidation has been completed, the remaining liquidation
proceeds (and the reserves, after the expiration of a reasonable period of time
of up to twelve (12) months after the liquidation has been completed) shall be
distributed pursuant to Section 4.2 (subject to Section 8.3.8).

     8.6  COMPLIANCE WITH TIMING REQUIREMENTS OF TREASURY REGULATIONS. 
Notwithstanding anything in this Article 8 to the contrary, in the event the
Partnership is "liquidated" within the meaning of Regulations Section
1.704-1(b)(2)(ii)(g), distributions shall be made to the Partners within the
time required by Regulations Section 1.704-1(b)(2)(ii)(b)(2) to the extent
practicable.  A liquidation occurring as a result of a Tax Termination shall be
treated as provided in Regulations Section 1.708-1(b)(1)(iv), or otherwise as
required by successor Regulations, if any.


                                      ARTICLE 9

                                    MISCELLANEOUS


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<PAGE>

     9.1  OTHER INTERESTS.  No Partner and no Affiliate of a Partner shall have
any right, by virtue of this Agreement or otherwise, to share or participate in
or to Approve any other investments or activities of any other Partner or the
income or proceeds derived therefrom.  No Partner and no Affiliate of any
Partner shall be obligated to offer or to bring to the attention of the
Partnership, any other Partner or its Affiliates, any property or other business
investment or opportunity, whether or not within the scope of the Partnership's
purposes, and any Partner and any Affiliate of any Partner may at any time
during the term of the Partnership own, invest in, develop or manage, directly
or indirectly, any property or other business investment or opportunity, whether
or not competitive with the Partnership, any Investment Entity, the Properties,
the Investments or the Partnership's or any Investment Entity's other assets,
and whether or not within the scope of the Partnership purposes.  Each of the
Partners acknowledges and agrees that each Partner and its Affiliates have
engaged or invested in, are now engaged and investing in and will in the future
be offered, consider, engage and/or invest in other business or real property
ventures of every kind and nature, including the ownership, acquisition,
financing, leasing, operating, management, syndication, brokerage and
development of real property and other investments and opportunities to make or
purchase loans which are competitive with the Properties and/or the Investments
and the business of the Partnership and the Investment Entities, and none of the
Partners or their Affiliates shall have any obligation or responsibility to
disclose, account for or offer any of such real properties, investments or
opportunities to the Partnership or any Partner or their Affiliates, and the
Partnership, the Partners and their Affiliates shall have no rights or interests
therein. 



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<PAGE>

     9.2  DAMAGES; CERTAIN CURE RIGHTS; OFFSET.  Each Partner shall be liable to
the Partnership and the other Partners for any actual (but not consequential or
incidental) damages arising from any breach of this Agreement.  Except as
provided in Sections 2.1.2, 2.2.2.1, 3.5.4, 3.11, 4.3.2, 5.5.1, 5.5.3 or 7.6,
the liability of any Partner shall be limited to such Partner's interest in the
Partnership.  Upon any alleged breach or default of this Agreement by any
Partner, it shall be a condition to any action against such Partner that such
Partner shall have received notice of such alleged breach or default (which may
be any notice otherwise required by this Agreement) and that such Partner shall
have failed to completely (at its expense, without right of reimbursement from
the Partnership or the other Partners) cure or commence to completely cure such
alleged breach or default within thirty (30) days following such notice and
failed, at all times thereafter, to use diligent efforts to pursue such cure to
completion, but in no event beyond ninety (90) days.  Notwithstanding anything
in this Agreement to the contrary, (a) there shall be no cure period for a Major
Default, and (b) the only cure period for failure timely to make a Capital
Contribution under Article 2 is set forth in Sections 2.2.1 and 2.2.2. 
Notwithstanding anything in this Agreement to the contrary, all amounts payable
to a Partner under this Agreement or to a Partner or an Affiliate of a Partner
under any agreement with the Partnership or an Investment Entity shall be
subject to offset for amounts owed to the Partnership or the other Partners and
their Affiliates by such Partner or its Affiliates under this Agreement or such
agreement with such Affiliate and shall be withheld and either retained by the
Partnership or reallocated to the other Partners in a reasonable manner, as the
case may be.  If a Partner breaches this Agreement and fails to cure such breach
within the time required by this Section 9.2, the Partners of the other Partner
Group may take such actions (or cause the Partnership or any Investment Entity
to take such actions) as are reasonably necessary to cure such breach at the
breaching Partner's expense.  If the Partners have established a course of
conduct of granting Approvals orally as provided in Section 1.12, no Partner
will be liable for any breach of this Agreement (regardless of whether such
breach is capable of being cured) if such Partner reasonably and in good faith
believed that such action was consented to orally by the other Partner Group;
PROVIDED, HOWEVER, that the foregoing shall not apply with respect to the
Approvals described in the last sentence of Section 1.12.  Notwithstanding
anything in this Agreement to the contrary, (i) no Highridge Partner shall be
liable for any mistakes made by it in implementing the Development Plan for any
Property that are made in good faith and do not constitute gross negligence,
actual fraud or intentional misappropriation of funds and (ii) for purposes of
applying Section 5.5 and this Section 9.2, a Highridge Partner shall not be
liable for (or be ineligible to receive indemnification under Section 5.5 by
reason of) the acts of any Affiliate of the Highridge Partners or of any
employee of any Highridge Partner or their Affiliates, or be liable for (or be
ineligible to receive indemnification under Section 5.5 by reason of) the acts
of any Affiliate of any Highridge Partner, except to the extent that the act of
such employee or Affiliate in question (A) occurred as a result of the failure
of a Highridge Partner to conduct the employee and Affiliate supervision
procedures to the extent required under Exhibit J or (B) occurred with the prior
actual and specific knowledge of John S. Long, Eugene S. Rosenfeld or Steven A.
Berlinger.
 
     9.3  NO AGENCY.  Except as provided herein, nothing herein contained shall
be construed to constitute any Partner hereof the agent of any other Partner
hereof or to limit in any manner the carrying on of each Partner's respective
businesses or activities.


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<PAGE>

     9.4  GOVERNING LAW.  It is the intent of the parties hereto that all
questions with respect to the construction of this Agreement and the rights and
liabilities of the parties hereto shall be determined in accordance with the
provisions of the laws of the State of Delaware as applicable to a limited
partnership formed under the Act.  The United States District Court for the
Central District of California, the Superior Court for Los Angeles County,
California and the United States District Court for the Southern District of New
York shall be the exclusive appropriate venues to litigate questions of
interpretation under this Agreement or the rights of the parties hereunder. 
Each of the parties hereto hereby waives any and all rights to a trial by jury
with respect to any dispute among the Partners or their Affiliates or among a
Partner (or its Affiliates) and the Partnership concerning this Agreement, the
Partnership, any Investment Entity or any Investment or Property.  In any
dispute among the Partners concerning the Partnership or this Agreement, the
prevailing Partner(s) shall be entitled to recover its reasonable attorneys'
fees and costs (including litigation and collection costs) from the
non-prevailing Partner(s).

     9.5  NOTICES.  Any notices or solicitations of Approval required or
permitted to be given under the terms of this Agreement shall be in writing and
shall be deemed to have been given when (i) personally delivered with signed
delivery receipt obtained, (ii) when transmitted by facsimile machine, if
followed by a mailing thereof pursuant to this Section 9.5 before the end of the
first business day thereafter, with printed confirmation of successful
transmission to the facsimile number set forth in the appropriate address listed
below being obtained by the sender from the sender's facsimile machine or
telephonically from the addressee, or (iii) when deposited in the United States
first class mail if sent postage prepaid by registered or certified mail, return
receipt requested, in each case addressed as follows: 

          IF TO ANY OF THE MACK-CALI PARTNERS, to it in care of:

                    Mr. Mitchell E. Hersh
                    Roger W. Thomas, Esq.
                    Mack-Cali Realty Corporation
                    11 Commerce Drive
                    Cranford, New Jersey  07016
                    Phone:  (908) 272-8000
                    Fax:  (908) 272-0214
     
               with a copy to:

                    Battle Fowler LLP
                    1999 Avenue of the Stars, Suite 2700
                    Los Angeles, California  90067
                    Attn:  Sanford C. Presant, Esq.
                    Phone:  (310) 277-6625
                    Fax:  (310) 277-6627


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<PAGE>

          IF TO ANY OF THE HIGHRIDGE PARTNERS, to it in care of:

                    Mr. John Long
                    Mr. Gene Rosenfeld
                    Mr. Steven Berlinger
                    c/o Highridge Partners, Inc.
                    300 Continental Boulevard, Suite 360
                    El Segundo, California  90245
                    Phone:  (310) 648-7600
                    Fax:  (310) 648-7619
                    
          with a copy to:

                    Mark Abramson, Esq.
                    300 Continental Boulevard, Suite 360
                    El Segundo, California  90245
                    Phone:  (310) 648-7600
                    Fax:  (310) 648-7619

The time to respond to any notice shall commence to run on the date of delivery
at the appropriate addresses (or attempted delivery if delivery is refused
during normal business hours).  A Partner may change the address to which
notices shall be sent to it, or any of its Authorized Representatives, by
written notice to all Partners (said change of address or of Authorized
Representatives to be effective upon receipt by all Partners).

     9.6  PRONOUNS AND PLURALS.  References herein to the singular shall include
the plural and to the plural shall include the singular, and references to the
masculine gender shall include the feminine and neuter genders (and vice versa),
except where the same shall not be appropriate.

     9.7  WAIVER.  No consent or waiver, express or implied, by any Partner to
or of any breach or default by any other Partner in the performance by the other
of its obligations hereunder shall be deemed or construed to be a consent or
waiver to or of any other breach or default by the other in the performance by
such other party of the same or any other obligations of such Partner hereunder.
Failure on the part of any Partner to object to or complain of any act or
failure to act of any other Partner or to declare any other Partner in default,
irrespective of how long such failure continues, shall not constitute a waiver
by such Partner of its rights hereunder.

     9.8  SEVERABILITY.  If any provision of this Agreement or the application
thereof to any Person or circumstance shall be invalid or unenforceable to any
extent, the remainder of this Agreement and the application of such provisions
to other Persons or circumstances shall not be affected thereby and shall be
enforced to the greatest extent permitted by law.


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<PAGE>

     9.9  TITLES AND CAPTIONS.  All Article or Section titles or captions
contained in this Agreement are for convenience only and shall not be deemed a
part of the content of this Agreement.

     9.10 AGREEMENT IN COUNTERPARTS.  This Agreement may be executed in several
counterparts, each of which shall be deemed an original, but all of which shall
constitute one and the same instrument when taken together.  In addition, this
Agreement may contain more than one counterpart of the signature page and the
Agreement may be executed by the affixing of the signatures of each of the
Partners to one or more of such counterpart signature pages; all of such
signature pages shall be read as though one, and shall have the same force and
effect as though all of the signers had signed a single signature page.  A
Partner shall be deemed to have executed and delivered this Agreement if and
when it has manually executed a counterpart signature page to this Agreement,
transmitted a copy of the same by facsimile to the other Partners at such other
Partner's facsimile number set forth above, and received a printed confirmation
of the successful receipt thereof by such other Partner.  This Agreement shall
not be binding on Partners hereto unless each Partner shall have executed and
delivered a copy of this Agreement to the other Partners.  If this Agreement is
executed and delivered by facsimile, each Partner who transmits its signature
page for this Agreement by facsimile shall promptly forward a manually executed
signature page to the other Partner (but a Partner's failure to do so promptly
shall not affect the validity of its execution and delivery of this Agreement by
facsimile transmission).

     9.11 BINDING AGREEMENT. This Agreement shall inure to the benefit of and be
binding upon the undersigned Partners and their respective heirs, executors,
legal or personal representatives, successors and assigns.  Whenever in this
instrument a reference to any party or Partner is made, such reference shall be
deemed to include a reference to the heirs, executors, legal or personal
representatives, successors and assigns of such party or Partner.

     9.12 FURTHER ASSURANCES.  Each Partner shall execute and deliver such
further instruments and do such further acts and things as may reasonably be
required to carry out the intent and purposes of this Agreement promptly upon
request from any other Partner.

     9.13 WAIVER OF PARTITION.  Unless otherwise specifically provided in this
Agreement (including Article 8), no Partner shall, and each Partner hereby
irrevocably waives the right to, either directly or indirectly, take any action
to require partition or appraisement of the Partnership, any Property, any
Investment, any Investment Entity, or any part thereof, and, notwithstanding any
provision of applicable law to the contrary, each Partner hereby irrevocably
waives any and all right to maintain any action for partition or to compel any
sale with respect to its interest in the Partnership or with respect to the
assets of the Partnership or the Investment Entities, or any part thereof.

     9.14 ENTIRE AGREEMENT.  This Agreement contains the final and entire
agreement among the parties hereto with respect to the subject matter hereof,
including the Investments, and they shall not be bound by any terms, conditions,
statements or representations, oral or written, with respect thereto that are
not contained herein.


                                          75
<PAGE>

     9.15 AMENDMENTS.  Except as expressly provided in this Agreement (including
Section 7.9.5), this Agreement may be modified or amended only upon the Approval
of the Partners.

     9.16 NO DRAFTING PRESUMPTION.  In interpreting the provisions of this
Agreement, no presumption shall apply against any Partner that otherwise would
operate against such Partner by reason of such document having been drafted by
such Partner or at the direction of such Partner or an Affiliate of such
Partner.

     9.17 NO THIRD-PARTY BENEFICIARIES.  Except for the representations
concerning conflict waivers pertaining to BFLLP in Section 7.8.9 (which shall
inure to the benefit of BFLLP), the provisions of this Agreement are not
intended to be for the benefit of any creditor or other Person (other than the
Partners in their capacities as such) to whom any debts, liabilities or
obligations are owed by (or who otherwise have a claim against or dealings with)
the Partnership or the Partners, and no such creditor or other Person shall
obtain any rights under any of such provisions (whether as a third-party
beneficiary or otherwise) or shall by reason of any such provisions make any
claim in respect to any debt, liability or obligation (or otherwise) including
any debt, liability or obligation with respect to Capital Contributions, against
the Partnership or the Partners.  In addition, no deficit balance in any
Partner's Capital Account or in the capital account of any partner or Partner of
a Partner shall be an asset of the Partnership, and no Partner shall be
obligated to restore any such deficit balance.





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                                          76
<PAGE>

     IN WITNESS WHEREOF, this Agreement of Limited Partnership is executed, and
is effective for all purposes, as of the date first set forth above.

                    GENERAL PARTNER:

                    HCG DEVELOPMENT, L.L.C.,
                    a Delaware limited liability company

                    By:  Highridge Asset Management, L.L.C.,
                         a Delaware limited liability company

                         By:  Highridge Management, Inc.,
                              a California corporation, its
                              Managing Member

                              By:
                                 -----------------------------------
                                 Name:
                                      ------------------------------
                                 Title:
                                       -----------------------------


                         [SIGNATURES CONTINUED ON NEXT PAGE]



                                          77
<PAGE>

                    LIMITED PARTNERS:

                    SUMMIT PARTNERS I, L.L.C.,
                    a Delaware limited liability company


                    By:  Highridge Asset Management, L.L.C.,
                         a Delaware limited liability company,
                         its Manager

                         By:  Highridge Management Inc.,
                              a California corporation
                              its Managing Member

                              By:
                                 -----------------------------------
                                 Name:
                                      ------------------------------
                                 Title:
                                       -----------------------------


                    MACK-CALI CALIFORNIA DEVELOPMENT ASSOCIATES L.P.,  
                    a California limited partnership


                    By:  MACK-CALI SUB XXI, INC.,
                         a Delaware corporation, its general partner

                         By:
                            ----------------------------------------

                              By:
                                 -----------------------------------
                                 Name:
                                      ------------------------------
                                 Title:
                                       -----------------------------

EXECUTED BY EACH OF THE UNDERSIGNED 
SOLELY TO CONFIRM THE PROVISIONS OF 
SECTION 3.11 THAT APPLY TO HIM:


- -------------------------------
         JOHN S. LONG



- -------------------------------
     EUGENE S. ROSENFELD


                                 [END OF SIGNATURES]


                                          78
<PAGE>

                                      EXHIBIT A

                                    DEFINED TERMS

     Capitalized terms that are used in the Agreement of Limited Partnership to
which this Exhibit is attached shall have the meaning set forth below in this
Exhibit A:

     "ABANDONMENT DECISION" is defined in Section 5.10(iv).

     "ACQUISITION DOCUMENTS" means the documentation necessary to acquire any
Investment or Property that has been Approved by the Partners for acquisition,
including any acquisition loan documentation.

     "ACT" shall mean the Delaware Revised Uniform Limited Partnership Act, as
amended from time to time (Delaware Code, Title 6, Sections 17-101, ET SEQ.).

     "ADJUSTED CAPITAL ACCOUNT DEFICIT" shall mean, with respect to any Partner,
the deficit balance, if any, in such Partner's Capital Account as of the end of
the relevant tax year, after giving effect to the following adjustments:

                    Credit to such Capital Account any amounts which such
Partner is obligated to restore or is deemed to be obligated to restore to the
Partnership pursuant to the penultimate sentences of Regulations Sections
1.704-2(g)(1) and 1.704-2(i)(5); and

                    Debit to such Capital Account the items described in
Sections 1.704-1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5), and
1.704-1(b)(2)(ii)(d)(6) of the Regulations.

The foregoing definition of Adjusted Capital Account Deficit is intended to
comply with the provisions of Section 1.704-1(b)(2)(ii)(d) of the Regulations
and shall be interpreted consistently therewith.

     "AFFILIATE" shall mean (a) with respect to any Highridge Partner:  John S.
Long, Eugene S. Rosenfeld, their Family Members, the Highridge GP, the Highridge
Limited Partner, and any Entity Controlled, Controlling or under common Control
(directly or indirectly) by or with one or more of them and/or their Affiliates,
and (b) with respect to any Mack-Cali Partner: the Mack-Cali Limited Partner,
any Co-General Partner and any Entity Controlled, Controlling or under Common
Control (directly or indirectly) by or with one or more of them and/or any of
their Affiliates.  For the purposes of this Agreement, the term "Control," or
any derivative thereof (including "Controlled by" or "Controlling"), when used
with respect to any specified Person, shall mean the possession, directly or
indirectly, of the power to direct or cause the direction of the management or
policies of such Person, whether through ownership of voting securities or
partnership or other ownership interests, or by contract; PROVIDED, HOWEVER,
that, without limiting the generality of the foregoing, (a) any Person which,
together with its Affiliates, owns, directly or indirectly, securities
representing more than 50% of the value or ordinary voting power of a
corporation or more than 50% of the partnership, general partnership, membership
or other ownership interests (based upon


                                         A-1
<PAGE>

value or vote) of any other Person is deemed to Control such corporation or
other Person, (b) a general partner shall always be deemed to Control any
partnership of which it is a general partner, and (c) a member-manager of a
limited liability company shall always be deemed to Control any limited
liability partnership of which it is a member- manager.

     "AGREEMENT" shall mean and refer to this Agreement of Limited Partnership
and all Exhibits referred to herein and attached hereto, each of which is hereby
made a part hereof, as amended and in effect from time to time.

     "AGREEMENT DATE" shall mean the date first written above as of which this
Agreement is effective.

     "ALL CASH ELECTION" is defined in Section 5.11(b).

     "APPRAISAL NOTICE" is defined in Section 5.11(a).

     "APPRAISAL FIRST OFFER PRICE" is defined in Section 5.11(a).

     "APPRAISED VALUE" is defined in Section 7.9.

     "APPROVAL" (and any variation thereof) of a Partner shall mean the prior
written (or oral to the extent permitted by Section 1.12) consent or approval of
such Partner, which may be granted or withheld in its sole discretion unless
otherwise expressly provided to the contrary in this Agreement.  Such Approval
shall be valid for a Partner who is not a natural person only if given by an
Authorized Representative of such Partner.  Use of the term "reasonable" or
"reasonably" in connection with the term "Approval" or any variation thereof or
with the term "satisfactory" means that such Approval shall not be withheld or
delayed unreasonably.  Unless either of such terms is used in connection with
the term "Approval" (or any variation thereof), such Approval may be granted or
withheld in a Partner's sole discretion.  If the Approval of any Partner to any
action is required under this Agreement and such Partner shall not have given
notice of disapproval or Approval of such action to the other Partners within
ten (10) Business Days after receipt of the notice requesting that such Approval
be given (or such earlier or later date as may be established pursuant to this
Agreement for the giving or withholding of such Approval), such Partner shall be
deemed not to have given such Approval.  Except as provided in Section 5.1, the
Approval of a Partner shall not be required from and after the date on which
such Partner has ceased to have Approval rights under this Agreement, regardless
of whether this Agreement otherwise requires the "Approval" of such Partner or
the "Approval" of the Partners".  The terms "Approved by the Partners" and
"Approved by the General Partners" (or any variation of such terms) are defined
in Section 1.12.

     "APPROVED DEVELOPMENT PLAN" means a Development Plan (or supplement
thereto) with respect to a Property or Investment that has been Approved by the
Partners as provided in Section 5.1.3.4 of this Agreement.

     "APPROVED OVERHEAD BUDGET" is defined in Section 5.1.3.1.


                                         A-2
<PAGE>

     "APPROPRIATE SHARING RATIO" is defined in Section 3.5.4.

     "AUTHORIZED REPRESENTATIVES" is defined in Section 1.12 hereof.

     "BANKRUPT" shall mean, with respect to any Partner, if:

               (a)       such Partner, or a Person that Controls such Partner
                    (the
"Controlling Person"), shall (i) apply for or consent to the appointment of, or
the taking of possession by, a receiver, custodian, trustee, administrator,
liquidator or the like of itself or of all or of a substantial portion of its
assets, (ii) admit in writing its inability, or be generally unable or deemed
unable under any applicable law, to pay its debts as such debts become due,
(iii) convene a meeting of creditors for the purpose of consummating an
out-of-court arrangement, or entering into a composition, extension or similar
arrangement, with creditors in respect of all or a substantial portion of its
debts, (iv) make a general assignment for the benefit of its creditors, (v)
place itself or allow itself to be placed, voluntarily or involuntarily, under
the protection of the law of any jurisdiction relating to bankruptcy,
insolvency, reorganization, winding-up, or composition or adjustment of debts,
or (vi) take any action for the purpose of effecting any of the foregoing; or

               (b)       a proceeding or case shall be commenced in any court of
competent jurisdiction, seeking (i) the liquidation, reorganization,
dissolution, winding-up, or composition or readjustment of debts, of such
Partner or a Controlling Person with respect thereto, (ii) the appointment of a
trustee, receiver, custodian, administrator, liquidator or the like of such
Partner or of a Controlling Person with respect thereto or of all or a
substantial portion of such Partner's or such Controlling Person's assets, or
(iii) similar relief in respect of such Partner or such Controlling Person under
any law relating to bankruptcy, insolvency, reorganization, winding-up, or
composition or adjustment of debts, without the consent of the other Partner and
such proceeding or case shall continue undismissed for a period of ninety (90)
days, or an order, judgment or decree approving or ordering any of the foregoing
shall be entered and continue unstayed and in effect for a period of sixty (60)
days, or an order for relief or other legal instrument of similar effect against
such Partner or such Controlling Person shall be entered in an involuntary case
under such law and shall continue for a period of sixty (60) days.

     "BANKRUPTCY" shall mean any condition described in the definition of
"Bankrupt" which renders a Partner a Bankrupt.

     "BANKRUPTCY CODE" shall mean Title 11 of the United States Code, 11 U.S.C.
Section 101 ET SEQ., as is now in effect or hereafter amended.

     "BFLLP" is defined in Section 7.8.9.

     "BORROWING MEMBER" is defined in Section 3.11.


                                         A-3
<PAGE>

     "BUSINESS DAY" shall mean any day on which commercial banks are authorized
to do business and are not required by law or executive order to close in both
Los Angeles, California and New York, New York.

     "BUY-OUT PRICE" is defined in Section 7.9.1.

     "CAPITAL ACCOUNT" shall mean, with respect to any Partner, the book Capital
Account maintained for such Partner in accordance with the provisions of Section
3.1.

     "CAPITAL CONTRIBUTION" or "CAPITAL CONTRIBUTIONS" shall mean the amount of
cash and the net fair market value (as reasonably Approved by the Partners) of
any property contributed to the capital of the Partnership by the Partners
pursuant to this Agreement.  The term "Capital Contributions" with respect to a
Partner shall include (i) the contributions of such Partner made pursuant to
Sections 2.1 and 2.2 and any other Section of this Agreement pursuant to which
Capital Contributions are deemed made by the Partners, and (ii) such Partner's
payments that are Approved by the Partners (to the extent such Approval is
required under this Agreement) which are made to third-party creditors of the
Partnership with respect to Partnership obligations unless and until reimbursed
by the Partnership, but only to the extent reimbursable to such Partner under
this Agreement. 

     "CAPITAL RECEIPTS" shall mean (i) the sum of (a) the proceeds received by
the Partnership from the sale, exchange or any other disposition of all or any
portion of any Investment (including any Partnership Interest), plus (b) all
amounts received by the Partnership from any Investment Entity on account of the
sale, exchange or other disposition of all or any portion of any Property,
Investment or other asset owned by such Investment Entity reduced by (ii) the
sum of (a) all expenditures made by the Partnership in connection with such
sale, exchange or other disposition that are required in connection with such
sale, exchange or other disposition or that are reasonably Approved by the
Partners, plus (b) loan repayments made from such proceeds as are required
pursuant to loan documentation or otherwise Approved by the Partners, plus
(c) amounts set aside as reserves therefrom that have been reasonably Approved
by the Partners.

     "CERTIFICATE" shall mean the Certificate of Limited Partnership of the
Partnership, as filed with the Office of the Secretary of State of the State of
Delaware in accordance with the Act, and as in effect from time to time.

     "CLOSING DATE" is defined in Section 7.9.2.

     "CODE" shall mean the Internal Revenue Code of 1986, as amended and in
effect from time to time (or any corresponding provision of succeeding law).

     "CO-GENERAL PARTNER" means any General Partner appointed by the Mack-Cali
Limited Partner as provided in Section 7.9.5.

     "CONTROL" or "Controlled by" or "Controlling", is defined in the definition
of "Affiliate."


                                         A-4
<PAGE>

     "CONTROL CHANGE NOTICE" is defined in Section 7.9.5.

     "CONTROLLING PERSON" is defined in the definition of the term "Bankrupt".

     "DEADLOCK" is defined in Section 5.10.

     "DEADLOCK NOTICE" is defined in Section 5.10.

     "DEFAULTING PARTNER" shall have the meaning set forth in Section 2.2.2.

     "DEVELOPMENT PLAN" is defined in Section 5.1.3.4.

     "DETERMINATION DATE" is defined in Section 5.9.

     "DISBURSEMENT REQUEST" is defined in Section 2.1.2.1(ii).

     "DISCRETIONARY OUTLAYS" is defined in Section 5.1.3.2.

     "DISPOSITION" is defined in the definition of "Gain or Loss on
Disposition."

     "DUE DATE" is defined in Section 2.2.1.

     "DUE DILIGENCE MATERIALS" shall mean any documents that have been made
available to the Partners under Section 5.1.6.2 in connection with acquiring and
Approving Investments, including any Investment Entity's acquisition of a
Property, such as lease abstracts, contracts (including service contracts and
brokerage agreements), title reports, surveys, engineering and geological
studies and reports, environmental investigations and reports, cost analyses,
feasibility studies, financial projections, leases and other such materials
relating to any Investment, Property or proposed investment by the Partnership
or any Investment Entity. 

     "ELECTING MEMBER(S)" is defined in Section 7.9.1.

     "EMERGENCY" shall mean an event which reasonably requires immediate action
involving the expenditure of funds or other action in order to avert or mitigate
significant damage to Persons or property in connection with the Partnership,
any Investment Entity or any of their assets if it is not possible (after a
reasonable effort) for a Partner to reach or obtain the Approval of the other
Partners whose Approval to take such action otherwise would be required.

     "ENTITY" shall mean any general partnership, limited partnership, limited
liability company, corporation, joint venture, trust, business trust,
joint-stock company, cooperative, association or other firm or any governmental
or political subdivision or agency, department or instrumentality thereof.

     "ERISA" shall mean the Employee Retirement Income Security Act of 1974, as
amended from time to time, and any successor statute.


                                         A-5
<PAGE>

     "FAMILY MEMBER" with respect to an individual shall mean such individual's
present or former spouse, brothers and sisters (whether by whole or half blood),
lineal ascendants or descendants or their respective spouses, or a trustee or
custodian for the benefit of any of them.

     "FIRST OFFER NOTICE" is defined in Section 5.11.

     "FMV APPRAISAL PROCEDURE" is defined in Section 5.11.

     "FMV NOTICE" is defined in Section 5.10(iv).

     "FORCE MAJEURE" shall mean any act of God (including weather disturbance,
earthquake, fire, mechanical failure of equipment, disease and the like), labor
strike or work stoppage or slowdown, material shortages, sabotage, war, riot,
moratorium, governmental action or inaction, or any other act of any third party
that reasonably prevents an action from being taken through no fault of the
Partner who is required to take such action or such Partner's Affiliates.

     "FUNDING NOTICE" is defined in Section 2.1.2.

     "FUNDING PROPORTION" shall mean the percentage set forth as such for each
Partner on Exhibit B hereto.

     "GAIN" OR "LOSS" ON "DISPOSITION" shall mean (i) the gain or loss (as the
case may be) of the Partnership for federal income tax purposes (as computed for
book purposes), arising from a sale, exchange or other taxable disposition
(including casualty or condemnation) of all or a portion of any Investment
(including any Partnership Interest) and (ii) the Partnership's distributive
share of the gain or loss for federal income tax purposes arising from the sale,
exchange or other taxable disposition of all or a portion of any of the asset of
any Investment Entity.  Gain or loss resulting from any disposition of Revalued
Property for which there is a difference between Gross Asset Value and adjusted
tax basis (as computed for tax as opposed to book purposes) shall be computed by
reference to the Gross Asset Value (as reasonably Approved by the Partners) of
the property disposed of (as adjusted for book purposes from time to time).

     "GAV NOTICE" is defined in Section 5.10(iii).

     "GENERAL PARTNER(S)" means the Managing General Partner and any Co-General
Partner for so long as such Partner shall be a General Partner under this
Agreement.

     "GROSS ASSET VALUE" shall mean, with respect to any asset, the adjusted
basis of the asset for federal income tax purposes, adjusted as provided in
Section 3.10.

     "HIGHRIDGE PARTNERS" shall mean the Managing General Partner, the Highridge
Limited Partner, and any other Person to whom either of them have transferred
all or a portion of their interest in the Partnership pursuant to this
Agreement.


                                         A-6
<PAGE>

     "INCLUDING" or "INCLUDING" shall mean "including, without limitation."

     "INCOME TAX REGULATIONS" or "REGULATIONS" shall mean the final or temporary
regulations promulgated from time to time under the Code or, if no final or
temporary regulations with respect to a tax issue then are in effect, proposed
regulations then in effect if reasonably Approved by the Partners, and
administrative and judicial interpretations thereof.

     "INDEPENDENT TAX COUNSEL" shall mean a nationally recognized tax counsel
reasonably Approved by the Partners that is capable of advising the Partnership
with respect to specified tax matters.

     "INITIAL DEVELOPMENT PLAN" is defined in Section 5.1.3.4.

     "INVESTED CAPITAL" with respect to each Partner shall mean the aggregate of
all Capital Contributions made from time to time to the Partnership by such
Partner, reduced by the aggregate of all distributions previously made (or
deemed made) to such Partner pursuant to Section 4.1(c) in repayment of the
Invested Capital of such Partner.

     "INVESTMENT ENTITY" is defined in Section 1.5.1.

     "INVESTMENT ENTITY AGREEMENT" shall mean, individually or collectively, the
operating agreement or limited partnership agreement pursuant to which each
Investment Entity is formed and operated, as in effect from time to time, with
such changes therein as may be Approved by the Partners.

     "INVESTMENT ENTITY TAX LOAN" is defined in Section 3.11.

     "INVESTMENTS" is defined in Section 1.5.2.

     "INVOKING PARTNER" is defined in Section 5.10(iii).

     "LAVA RIDGE LAND" shall mean that certain parcel of real property that is
described on Exhibit D (including improvements thereon) that is to be acquired
by purchase by an Investment Entity formed by the Partnership from a seller who
is not an Affiliate of any Partner.

     "LIABILITIES" is defined in Section 5.5.3.

     "LIQUIDATOR" is defined in Section 8.3.

     "MACK-CALI LIMITED PARTNER" is defined in the Heading to this Agreement.

     "MACK-CALI PARTNERS" shall mean the Mack-Cali Limited Partner, any
Co-General Partner, and any other Person to whom any of them have transferred
all or a portion of their interest in the Partnership pursuant to this
Agreement.


                                         A-7
<PAGE>

     "MACK-CALI REALTY" means Mack-Cali Realty Corporation.

     "MACK-CALI SALE RIGHT" is defined in Section 5.10(iv).

     "MAJOR DECISIONS" is defined in Section 5.1.5.

     "MAJOR DEFAULT NOTICE" is defined in Section 5.9.

     "MAJOR DEFAULT" means, with respect to a Partner, that such Partner or any
of such Partner's Affiliates has engaged in actual fraud with respect to the
Partnership, an investment Entity, any Investment or any Property or has
intentionally misappropriated Partnership or Investment Entity Funds.

     "MANAGING GENERAL PARTNER" is defined in the Heading to this Agreement.

     "MANAGING GENERAL PARTNER GUARANTIES" is defined in Section 3.5.4.

     "MANAGING GENERAL PARTNER SALE RIGHT" is defined in Section 5.10(iv).
          
     "MANAGEMENT AGREEMENT" is defined in Section 5.2(b).

     "MATERIAL" (and any variation thereof) is defined in Section 5.1.1.10.

     "MAXIMUM TAX RATE" shall mean the highest combined effective maximum tax
rate in effect from time to time with respect to any Partner (based on the
assumption that individual rates apply to such Partner) for federal, state and
local income tax purposes, computed by taking into account the tax savings
resulting from the deductibility of state and local income taxes to the extent
permitted for federal purposes and taking into account the tax on
self-employment income (also based on the assumption that each Member is an
individual taxpayer).  The Maximum Tax Rate shall be computed by the
Partnership's accountants at the Borrowing Partners' expense whenever the
Maximum Tax Rate needs to be determined under Section 3.11.

     "NET AVAILABLE CASH," with respect to any period, shall mean (i) the sum of
all cash receipts of the Partnership during such period from all sources
(including Capital Contributions, cash on hand at the beginning of such period
to the extent not held in reserves, distributions from the Investment Entities
and any funds released during such period from cash reserves previously
established), minus (ii) the sum of (a) Capital Receipts, (b) Net Mortgage
Proceeds, (c) Operating Costs, and (d) any Investment Entity Tax Loans, for such
period.

     "NET MORTGAGE PROCEEDS" shall mean (i) the sum of (a) the proceeds of any
loan made to the Partnership and the proceeds from refinancing any such loan,
plus (b) any amount released from cash escrow accounts established under any
loan to the Partnership, plus (c) the proceeds received by the Partnership from
any Investment Entity on account of any loan made to such Investment Entity and
the proceeds from refinancing any such loan received from any Investment Entity,
other than Investment Entity Tax Loans, reduced by (ii) the sum of (a) any 


                                         A-8
<PAGE>

amounts required to fund the Partnership's expenditures that are reasonably
Approved by the Partners or that are otherwise permitted to be withheld from
such amounts for such purpose under this Agreement, (b) any and all expenses
incurred by the Partnership in connection with such loan or refinancing that are
reasonably Approved by the Partners, (c) amounts used as permitted under this
Agreement to repay other indebtedness of the Partnership, plus (d) amounts
thereof retained as reserves under this Agreement for Shortfall Disbursements by
the Partnership (such reserves to be reasonably Approved by the Partners).

     "95% STABILIZATION" shall mean, with respect to a Property, the date on
which completion of such Property has occurred and binding leases for at least
95% of the leaseable space in such Property have been entered into for which
either (i) rent payments have commenced or (ii) all required building permits
with respect to such lease have been obtained, the tenant improvements required
to be made under such lease that are a condition precedent to the commencement
of rent payments under such lease ("Required Tenant Improvements"), to the
knowledge of the Highridge Partners (defined as the actual and specific
knowledge of John S. Long, Eugene S. Rosenfeld, Steven A. Berlinger or Jack
Mahoney), can be completed within six months, and rent payments will commence
within six months if all Required Tenant Improvements were made before the
expiration of such six-month period.

     "NON-DEFAULTING MEMBER" is defined in Section 2.2.2.

     "NON-DISCRETIONARY ITEMS" shall mean expenditures payable by the
Partnership or any Investment Entity for increases over the amount set forth in
the Partnership's most recent Approved Budget for the following items, but only
to the extent not reasonably anticipated at the time such Approved  Budget was
submitted to the Partners for Approval under Section 5.1.3.1:  taxes (including
real estate taxes, but excluding any Partner's tax liability), utilities,
bonding costs, insurance (including earthquake insurance, and insurance
described under Section 5.1.1 to the extent provided therein), debt service and
expenses or other amounts required to be paid by the Partnership or any
Investment Entity under contracts or agreements of the Partnership or any
Investment Entity that have been Approved by the Partners(or are permitted to be
entered into without such Approval).

     "NONRECOURSE DEDUCTIONS" is defined in Section 3.5.6.

     "NONRECOURSE LIABILITY" is defined in Section 3.5.6.

     "NON-VOTING PARTNER" is defined in Section 5.1.6.1.

     "OPERATING COSTS" for a period shall mean the sum of (i) all cash
expenditures of the Partnership (which expenditures shall be subject to the
Approved Budget limitations of Section 5.1.3) made during such period for
current costs and expenses (except to the extent constituting a reduction in
computing Net Mortgage Proceeds or Capital Receipts for such period), including
acquisition costs of the Investments (including the Partnership Interests), due
diligence expenditures, payments of interest and principal or other monetary
obligations due under any loan made to the Partnership; accounting, legal and
auditing fees; taxes payable by the Partnership; public or private utility
charges; sales, use, payroll taxes and withholding


                                         A-9
<PAGE>

taxes related thereto; and all other advertising, management, leasing,
government approval, and other operating, construction and development costs,
expenses and capital expenditures (including fees of land use consultants,
engineers, architects, municipal development fees, bond costs and the like)
actually paid with respect to the Investments or the Partnership's business
generally (subject to the Approved Budget limitations of Section 5.1.3) or
reimbursed or paid to Partners (including Overhead Payments), plus (ii) such
reserves established from time to time during such period upon the reasonable
Approval of the Partners (except to the extent constituting a reduction in
computing Net Mortgage Proceeds or Capital Receipts for such period), plus
(iii) any amounts contributed by the Partnership to any Investment Entity
pursuant to the applicable Investment Entity Agreement during such period
(whether pursuant to Section 2.5 or otherwise).

     "ORIGINAL AGREEMENT" is defined in the Recitals to this Agreement.

     "OTHER PARTNER" is defined in Section 5.10(iii).

     "OVERHEAD PAYMENTS" is defined in Section 5.1.3.1.

     "PARTNER ASSIGNEE" is defined in Section 7.4.

     "PARTNER GROUP" means either (a) the Highridge Partners or (b) the
Mack-Cali Partners (there are two Partner Groups).

     "PARTNER NONRECOURSE DEBT" is defined in Section 3.5.6 hereof.

     "PARTNER NONRECOURSE DEBT MINIMUM GAIN" is defined in Section 3.5.6 hereof.

     "PARTNERS" shall mean the Managing General Partner, the Highridge Limited
Partner, the Mack-Cali Limited Partner and any Co-General Partner admitted as
such pursuant to this Agreement (each a "Partner"), in their respective
capacities as Partners, and any of their successors in their respective
capacities as Partners admitted to the Partnership as Partners hereunder, and
any other Person admitted as a Partner under this Agreement, for so long as any
such Person is a Partner under the terms of this Agreement.

     "PARTNER NONRECOURSE DEDUCTIONS" is defined in Section 3.5.6 hereof.

     "PARTNERSHIP" shall mean HPMC Lava Ridge Partners, L.P.,  a Delaware
limited Partnership formed under the Act and operated pursuant to this
Agreement.

     "PARTNERSHIP ACCOUNTING YEAR" shall mean and refer to the accounting year
of the Partnership ending on December 31 of each calendar year or such shorter
fiscal period during such year for which a relevant determination is being made
under this Agreement.

     "PARTNERSHIP INTEREST" shall mean the interest in any Investment Entity
acquired by the Partnership, as in effect from time to time under the applicable
Investment Entity Agreement.


                                         A-10
<PAGE>

     "PARTNERSHIP MINIMUM GAIN" is defined in Section 3.5.6 hereof.

     "PERFORMANCE DEFAULT" with respect to the Managing General Partner and its
Affiliates shall be deemed to have occurred (subject to Section 5.9) with
respect to a Property or Investment if (a) the Managing General Partner shall
have failed to cause compliance with any Approved Development Plan with respect
to such Property or Investment in any Material respect for any reason other than
Force Majeure, or (b) if a Highridge Partner or an Affiliate of any Highridge
Partner has breached the provisions of any agreement entered into between such
Person  and the Partnership or any Investment Entity and has failed to cure such
breach within the time required by such agreement (but this clause (b) shall
apply with respect to a Property or Investment only if such breach was not
willful and therefore does not constitute a Removal Default for which separate
remedies are provided elsewhere in this Agreement).

     "PERSON" shall mean any individual or Entity.

     "PREFERRED RETURN" shall mean an amount equal to ten percent (10%) per
annum, on a calendar year basis, for the actual number of days for which the
Preferred Return is being determined, cumulative and compounded quarterly,
multiplied by the Invested Capital of each of the Partners outstanding from time
to time, computed by using July 21, 1998 as the date which the Section 2.1.1
Contributions of the Partners shown on Exhibit B were made by the Partners, the
actual dates on which a Partner's Capital Contributions (other than such Section
2.1.1 Contributions) are made to the Partnership from time to time (if any), and
using the actual dates on which distributions are made (or deemed made) to such
Partner pursuant to Section 4.1(c).

     "PRIME RATE" shall mean the so-called "Reference Rate" announced by Bank of
America N.T.&S.A. at Los Angeles, California, from time to time.

     "PROFIT" OR "LOSS" shall mean, for each Partnership Accounting Year, an
amount equal to the Partnership's net taxable income or loss (as computed for
book purposes) for such Accounting Year (determined without regard to any items
of income, gain or deduction, as computed for book purposes, taken into account
in computing the Partnership's Gain or Loss on Disposition for such Accounting
Year), determined in accordance with Code Section 703(a) (for this purpose, all
items of income, gain, loss or deduction, as computed for book purposes,
required to be stated separately pursuant to Code Section 703(a)(1) shall be
included in computing such taxable income or loss), including the Partnership's
allocated share thereof from any Investment Entity, with the following
adjustments:

     Any income of the Partnership that is exempt from federal income tax and is
not otherwise taken into account in computing Profit or Loss shall be added to
such taxable income or loss (as computed for book purposes);

     In the event the agreed fair market value of any Partnership asset is
adjusted pursuant to Regulations Section 1.704-l(b)(2)(iv)(f) or other pertinent
sections of such Regulations, the amount of such adjustment shall be taken into
account as Gain or Loss on Disposition of such asset for purposes of computing
Profit or Loss; and in lieu of the depreciation, amortization



                                         A-11
<PAGE>

and other cost recovery deductions taken into account in computing such taxable
income or loss, there shall be taken into account depreciation, amortization or
other cost recovery computed with reference to Gross Asset Value of Partnership
property reasonably Approved by the Partners (subject to Section 5.10(iii)) (if
different from its adjusted tax basis) pursuant to Regulations Section
1.704-l(b)(2)(iv)(g) for such Partnership Accounting Year; and

     Notwithstanding any other provisions, any items which are specially
allocated pursuant to Sections 3.3, 3.4, 3.5, 3.6 and 3.9 shall not be taken
into account in computing Profit or Loss.

     "PROPERTIES" is defined in Section 1.5.1.

     "PROPERTY DEADLOCK" is defined in Section 5.11(a).

     "PROPONENT GROUP" is defined in Section 5.11(a).

     "PROPONENT GROUP FIRST OFFER PRICE" is defined in Section 5.11(a).

     "PROPONENT GROUP INTEREST PURCHASE PRICE" is defined in Section 5.11(a).

     "PURCHASE NOTICE" is defined in Section 7.9.1.

     "RECONTRIBUTING MEMBER" is defined in Section 3.5.4.

     "REGULATIONS" is defined in the definition of "Income Tax Regulations."

     "REIT" is defined in Section 5.1.1.2.

     "REIT SHARE VALUE" is defined in Section 8.3.8. 

     "REQUIRED ADDITIONAL CONTRIBUTIONS" is defined in Section 2.1.2.

     "REMOVAL DEFAULT" means, with respect to the Managing General Partner, that
such Partner or any of such Partner's Affiliates has committed gross negligence
with respect to the Partnership, an Investment Entity, an Investment or a
Property, or has willfully breached the provisions of this Agreement, any
Investment Entity Agreement or any other agreement entered into between such
Person and the Partnership or any Investment Entity, in each case if the same is
not cured within the time required by Section 9.2 of this Agreement, such
Investment Entity Agreement, or such other agreement (as applicable).

     "RESIDUAL PERCENTAGE" of a Partner as of any relevant time shall mean the
Residual Percentage set forth on Exhibit B for such Partner.

     "RESPONDENT GROUP" is defined in Section 5.11(a).

     "RESPONDENT GROUP INTEREST PURCHASE PRICE" is defined in Section 5.11(a).


                                         A-12
<PAGE>

     "REVALUED PROPERTY" is defined in Section 3.5.3.2.

     "SECTION 2.2.1 CONTRIBUTION" is defined in Section 2.2.1.

     "SHORTFALL" is defined in Section 2.1.2.

     "SUBSEQUENT DEVELOPMENT PLAN" is defined in Section 5.1.3.4.

     "TAX MATTERS PARTNER" is defined in Section 5.4 (which references the
Code).

     "TAX PAYMENT LOAN" is defined in Section 3.11.

     "TAX TERMINATION" is defined in Section 7.5.1.3.

     "TERMINATED PARTNER" shall mean (i) any Partner that has failed to make a
Capital Contribution when required and who has become a Defaulting Partner by
reason thereof under Section 2.2.2, (ii) any Partner that becomes Bankrupt,
(iii) any Partner which has been dissolved (and has not been reconstituted
within sixty (60) days thereafter) or, if an individual, who has died, (iv) any
Partner which has committed a Major Default or (v) any Partner who has breached
the restrictions on Transfer of its interest in the Partnership contained in
Article 7.  If any Partner in a Partner Group is a Terminated Partner, all
Partners in such Partner Group shall also be deemed to be Terminated Partners,
and shall be subject to all of the remedies applicable against a Terminated
Partner under this Agreement, including the loss of its Approval rights and the
obligation to sell its interest in the Partnership as provided in Section 7.9.

     "TERMINATION DATE" shall mean the date upon which a Partner became a
Terminated Partner.

     "THIRD PARTY MEZZANINE FINANCING" with respect to a Property means that
portion of the Partnership's or Investment Entity's financing with respect to
such Property which, when added to the Partnership's conventional financing with
respect to such Property, will cause such Property to be 85% financed with debt.

     "TRANSFER" shall mean (i) the issuance, transfer, sale, gift, grant,
conveyance, assignment, encumbrance, pledge, hypothecation or redemption,
directly or indirectly, of any equity ownership interest (whether stock, general
partnership interest, partnership interest, membership interest or otherwise) in
the Partnership or in any Person holding a direct (or indirect through tiered
Entities) interest in the Partnership, or the merger or consolidation of any
such Person into or with another Person, as the case may be; and (ii) the
execution and delivery by any Person holding a direct (or indirect through
tiered Entities) interest in the Partnership of a contract of sale, option or
other agreement providing for any of the foregoing.

     "UNDISTRIBUTED PREFERRED RETURN" with respect to a Partner means an amount
equal to the Preferred Return of each Partner accrued to the date the
Undistributed Preferred Return is


                                         A-13
<PAGE>

being determined, less all distributions made (or deemed made) to such Partner
pursuant to Sections 4.1(a) and (b).

     "UNREIMBURSED PAYMENTS" is defined in Section 3.5.4.





















                                         A-14
<PAGE>

                                      EXHIBIT B

                   FUNDING PROPORTIONS, SECTION 2.1.1 CONTRIBUTIONS
                               AND RESIDUAL PERCENTAGES


                            Section 2.1.1           Funding       Residual
Partner                  Contributions (Cash)     Proportion     Percentage
- -------                  --------------------     ----------     ----------

Highridge GP                  $    30,345              1%             1%
Highridge Limited Partner     $   578,265             19%            49%
Mack-Cali Limited Partner     $ 2,434,800             80%            50%
                              -----------            ----           ----
     Total                    $ 3,043,500            100%           100%
                              ===========            ====           ====


Note:     The Section 2.1.1 Contributions shown on this Exhibit B are deemed
          contributed to the Partnership as of July 21, 1998.  All additional
          Capital Contributions shall be made only as provided in the
          Partnership Agreement.



                                         B-1
<PAGE>

                                      EXHIBIT C

                               INITIAL DEVELOPMENT PLAN
               (INCLUDING APPROVED BUDGET AND APPROVED OVERHEAD BUDGET)
                               FOR THE LAVA RIDGE LAND


                                   [See Attached.]
















                                         C-1
<PAGE>

                                      EXHIBIT D

                       LEGAL DESCRIPTION OF THE LAVA RIDGE LAND


                                  [BEGINS NEXT PAGE]











                                        D-1-1
<PAGE>

                                      EXHIBIT E

                                OWNERSHIP OF PARTNERS

                           Members                     % Capital      % Profits
Partner                  or Partners                    Interest       Interest
- -------                  -----------                   ---------      ---------
                                                        Aggregate      Aggregate
Highridge GP             __________*                       100%           100%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

Highridge Limited                                       Aggregate      Aggregate
 Partner                 __________*                       100%           100%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

                         __________                      _____%         _____%

Mack-Cali Limited     General Partner:                  Aggregate      Aggregate
 Partner              Mack-Cali Sub XXI,                   100%           100%
                      Inc., a Delaware
                      corporation and

                     Limited Partner:
                       Mack-Cali Realty, L.P.,
                       a Delaware limited
                       partnership (both
                       Controlled by Mack-Cali
                       Realty Corporation)


- -    SEE CHART ATTACHED AS EXHIBIT E-2 (BEGINS NEXT PAGE).


                                         E-1
<PAGE>

                                      EXHIBIT F

                               [INTENTIONALLY OMITTED]


















                                         F-1
<PAGE>

                                      EXHIBIT G

                               [INTENTIONALLY OMITTED]






















                                         G-1
<PAGE>

                                      EXHIBIT H

                               [INTENTIONALLY OMITTED]




















                                         H-1
<PAGE>

                                      EXHIBIT I

                               [INTENTIONALLY OMITTED]






















                                         I-1
<PAGE>
                                      EXHIBIT J

                              PROCEDURES FOR SUPERVISING
                          EMPLOYEE AND AFFILIATE COMPLIANCE 



     THE HIGHRIDGE PARTNERS SHALL BE RESPONSIBLE FOR THE FOLLOWING IN CONNECTION
     WITH THE WORK TO BE PERFORMED FOR THE PARTNERSHIP AND THE INVESTMENT
     ENTITIES BY AFFILIATES OF THE HIGHRIDGE PARTNERS AND THEIR EMPLOYEES:

     1.  JOHN S. LONG ("LONG"), EUGENE S. ROSENFELD ("ESR") AND/OR STEVEN A.
BERLINGER ("SAB"), OR AN OFFICER OF HIGHRIDGE PARTNERS APPOINTED BY THEM SHALL,
ON A MONTHLY BASIS, REVIEW THE BUDGETS, CASH FLOW SUMMARIES, LEASING SUMMARIES
(OR STATUS REPORTS) AND CONSTRUCTION OR DEVELOPMENT STATUS REPORTS AND GENERALLY
CONDUCT MONTHLY (OR MORE FREQUENTLY AS REQUIRED) MEETINGS WITH ALL HIGHRIDGE
PARTNERS' AND THEIR AFFILIATES' SUPERVISORY EMPLOYEES (JACK MAHONEY AND KEN
WHITE UNLESS AND UNTIL CHANGED BY THE HIGHRIDGE PARTNERS UPON NOTICE TO THE
MACK-CALI LIMITED PARTNER) WORKING ON THE PROPERTIES TO ASCERTAIN THE STATUS OF
THE PROPERTIES AND LONG, ESR AND/OR SAB SHALL PROVIDE DIRECTION AND GUIDANCE TO
SUCH EMPLOYEES AS REQUIRED FROM TIME TO TIME IN CONNECTION WITH THE PROPERTIES
AND INVESTMENTS.

     2.  LONG, ESR AND/OR SAB SHALL CAUSE TO BE FURNISHED TO EACH SUCH
SUPERVISORY EMPLOYEE AND AFFILIATE A COPY OF EACH APPROVED DEVELOPMENT PLAN AND
APPROVED BUDGET AND A LIST OF THE ACTIONS THAT REQUIRE THE CONSENT OF THE
MACK-CALI PARTNERS UNDER THIS AGREEMENT (INCLUDING ANY APPROVED LEASING
PARAMETERS) AND PERIODICALLY PROVIDE EACH SUCH SUPERVISORY EMPLOYEE AND
AFFILIATE WITH A LIST OF THE CHANGES IN THE APPROVED DEVELOPMENT PLAN AND/OR
APPROVED BUDGETS THAT HAVE BEEN APPROVED BY THE PARTNERS FROM TIME TO TIME, AND,
UPON ANY OF LONG, ESR AND/OR SAB HAVING ACTUAL KNOWLEDGE OF ANY ACT OF ANY
EMPLOYEE OF THE HIGHRIDGE PARTNERS OR THEIR AFFILIATES, OR ANY ACT OF AN
AFFILIATE OF THE HIGHRIDGE PARTNERS THAT WOULD BE A BREACH OF THIS AGREEMENT
(INCLUDING A MAJOR DEFAULT) IF THE ACTION WERE TAKEN BY A HIGHRIDGE PARTNER, OR
ACTUAL KNOWLEDGE OF ANY MATERIAL DEVIATION FROM ANY APPROVED DEVELOPMENT PLAN,
APPROVED BUDGET OR CONTRACT PREVIOUSLY APPROVED BY THE PARTNERS OR BY THE
MACK-CALI LIMITED PARTNER, THE HIGHRIDGE PARTNERS SHALL GIVE PROMPT NOTICE
THEREOF TO THE MACK-CALI LIMITED PARTNER.

     3.  IF LONG, ESR OR SAB SUSPECTS THAT AN EMPLOYEE OF THE HIGHRIDGE PARTNERS
OR THEIR AFFILIATES, OR THAT AN AFFILIATE OF HIGHRIDGE PARTNERS, HAS COMMITTED
FRAUD OR MISAPPROPRIATION OF FUNDS, THE HIGHRIDGE PARTNERS SHALL NOTIFY THE
MARK-CALI LIMITED PARTNER PROMPTLY, AND THE HIGHRIDGE GP AND THE PARTNERS SHALL
REASONABLY APPROVE THE COURSE OF ACTION TO BE TAKEN IN RESPONSE THERETO.

     4.  COPIES OF WRITTEN SUMMARIES OR STATUS OR PERFORMANCE REPORTS, ANY OTHER
INFORMATION REASONABLY REQUESTED BY THE MACK-CALI LIMITED PARTNER, AND NOTICE OF
ANY MATERIAL DEVIATION FROM AN APPROVED DEVELOPMENT PLAN, APPROVED BUDGET OR
CONTRACT APPROVED BY THE PARTNERS OR BY THE MACK-CALI LIMITED PARTNER THAT IS
RECEIVED FROM EMPLOYEES OF THE HIGHRIDGE PARTNERS OR THEIR AFFILIATES SHALL BE
FURNISHED BY THE HIGHRIDGE PARTNERS TO THE MACK-CALI LIMITED PARTNER PROMPTLY
AFTER BEING SUBMITTED TO ANY OF LONG, ESR AND/OR SAB.


                                         J-1
<PAGE>

                                      EXHIBIT K

                               [INTENTIONALLY OMITTED]




















                                         K-1
<PAGE>

                                     EXHIBIT L
                                          
                            OPERATING APPROVAL STANDARDS
                                          
                                 [BEGINS NEXT PAGE]
                                          
                                          
                                          
                      [ATTACH SAME STANDARDS AS IN EL SEGUNDO]

















                                         L-1
<PAGE>

                                      EXHIBIT M

                         HIGHRIDGE REIMBURSEMENT SCHEDULE FOR
                                 THE LAVA RIDGE LAND



                                  [BEGINS NEXT PAGE]

















                                         M-1
<PAGE>

                                      EXHIBIT N


                             FORM OF DISBURSEMENT REQUEST


           [TO BE ATTACHED; SAME FORM AS USED FOR EL SEGUNDO/SUMMIT RIDGE]

















                                         N-1
<PAGE>

                                  TABLE OF CONTENTS


ARTICLE 1 GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . 2
     1.1  Formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
     1.2  Name of Partnership. . . . . . . . . . . . . . . . . . . . . . . . . 2
     1.3  Certificate of Limited Partnership . . . . . . . . . . . . . . . . . 2
     1.4  Principal Office, Resident Agent and Registered Office . . . . . . . 2
     1.5  Purposes of Partnership. . . . . . . . . . . . . . . . . . . . . . . 3
     1.6  Funding Proportions; Residual Percentages. . . . . . . . . . . . . . 3
     1.7  Other Qualifications . . . . . . . . . . . . . . . . . . . . . . . . 4
     1.8  Term of Partnership. . . . . . . . . . . . . . . . . . . . . . . . . 4
     1.9  Title to Partnership Property. . . . . . . . . . . . . . . . . . . . 4
     1.10 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
     1.11 Authorized Acts. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
     1.12 Authorized Representatives . . . . . . . . . . . . . . . . . . . . . 4

ARTICLE 2 CAPITAL CONTRIBUTIONS AND ADDITIONAL CONTRIBUTIONS . . . . . . . . . 5
     2.1  Capital Contributions. . . . . . . . . . . . . . . . . . . . . . . . 5
     2.2  Third-Party Loans and Additional Capital Contributions and Capital
          Calls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     2.3  Use of Capital Contributions; Certain Expenses . . . . . . . . . . .10
     2.4  Partner Loans. . . . . . . . . . . . . . . . . . . . . . . . . . . .11
     2.5  Contributions to Investment Entities . . . . . . . . . . . . . . . .11

ARTICLE 3 INCOME TAX ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . .12
     3.1  Establishment and Maintenance of Capital Accounts; Partnership 
          Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
     3.2  Profit and Loss Allocations. . . . . . . . . . . . . . . . . . . . .12
     3.3  Allocations of Gain or Loss on Disposition . . . . . . . . . . . . .13
     3.4  Minimum Gain Chargeback and Qualified Income Offset. . . . . . . . .15
     3.5  Other Tax Allocation Provisions. . . . . . . . . . . . . . . . . . .15
     3.6  Intent of Allocations. . . . . . . . . . . . . . . . . . . . . . . .19
     3.7  Basis Elections. . . . . . . . . . . . . . . . . . . . . . . . . . .19
     3.8  General Allocation Rules . . . . . . . . . . . . . . . . . . . . . .20
     3.9  Sharing of Partnership Nonrecourse Debt and Nonrecourse Deductions .20
     3.10 Adjustment of Gross Asset Value. . . . . . . . . . . . . . . . . . .20
     3.11 Tax Payment Loans. . . . . . . . . . . . . . . . . . . . . . . . . .21
     3.12 Approvals Relating to Tax Issues.. . . . . . . . . . . . . . . . . .23

ARTICLE 4 LOAN REPAYMENTS AND
DISTRIBUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
     4.1  Net Available Cash, Net Mortgage Proceeds and Capital Receipts
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
     4.2  Proceeds and Distributions in Liquidation. . . . . . . . . . . . . .24
     4.3  General Distribution Rules . . . . . . . . . . . . . . . . . . . . .25
     4.4  Source of Distributions. . . . . . . . . . . . . . . . . . . . . . .26


                                         -i-
<PAGE>

ARTICLE 5 MANAGEMENT; DUTIES AND POWERS OF THE MANAGING GENERAL PARTNER;
          RIGHTS AND DUTIES OF MANAGING GENERAL PARTNER. . . . . . . . . . .  26
     5.1  Management of Business; Officers; Partner Obligations;
          Reimbursements; Major Decisions; Retained Approvals. . . . . . . .  26
     5.2  Affiliate Transactions; Exclusivity; Mack-Cali  Property
          Management Option. . . . . . . . . . . . . . . . . . . . . . . . .  40
     5.3  Reporting Requirements; Financials; Meetings . . . . . . . . . . .  41
     5.4  Tax Matters Partner; Tax Returns . . . . . . . . . . . . . . . . .  43
     5.5  Indemnification and Liability of the Partners. . . . . . . . . . .  44
     5.6  Control Change . . . . . . . . . . . . . . . . . . . . . . . . . .  46
     5.7  Limitation of Liability. . . . . . . . . . . . . . . . . . . . . .  46
     5.8  No Priorities. . . . . . . . . . . . . . . . . . . . . . . . . . .  46
     5.9  Determination Date for Indemnity Payments, Removal Defaults,
          Performance Defaults and Major Defaults; Arbitration . . . . . . .  46
     5.10 Deadlock/Partner Sale Rights . . . . . . . . . . . . . . . . . . .  48
          5.11 Property Deadlock.. . . . . . . . . . . . . . . . . . . . . .  52

ARTICLE 6 BOOKS, RECORDS AND BANK ACCOUNTS . . . . . . . . . . . . . . . . .  55
     6.1  Books and Records. . . . . . . . . . . . . . . . . . . . . . . . .  55
     6.2  Bank Accounts. . . . . . . . . . . . . . . . . . . . . . . . . . .  56

ARTICLE 7 TRANSFERS OF PARTNERSHIP INTERESTS . . . . . . . . . . . . . . . .  56
     7.1  Restrictions on Transfer . . . . . . . . . . . . . . . . . . . . .  56
     7.2  No Tag-Along Rights. . . . . . . . . . . . . . . . . . . . . . . .  57
     7.3  Bankruptcy or Dissolution of Partners. . . . . . . . . . . . . . .  57
     7.4  Substitution of Partner. . . . . . . . . . . . . . . . . . . . . .  57
     7.5  Additional Transfer Restrictions . . . . . . . . . . . . . . . . .  58
     7.6  Transfer Indemnification and Contribution Provisions . . . . . . .  59
     7.7  Basis for Restrictions and Remedies. . . . . . . . . . . . . . . .  60
     7.8  Representations, Warranties and Covenants. . . . . . . . . . . . .  60
     7.9  Terminated Partner; Removal Defaults; Performance Defaults; Purchase
          Rights; Control Change Notices . . . . . . . . . . . . . . . . . .  63

ARTICLE 8 TERM, DISSOLUTION AND TERMINATION. . . . . . . . . . . . . . . . .  67
     8.1  Events of Dissolution. . . . . . . . . . . . . . . . . . . . . . .  67
     8.2  Limitation on Dissolution. . . . . . . . . . . . . . . . . . . . .  67
     8.3  Liquidation and Winding Up . . . . . . . . . . . . . . . . . . . .  67
     8.4  Reconstitution After Bankruptcy or Dissolution of a
          General Partner. . . . . . . . . . . . . . . . . . . . . . . . . .  70
     8.5  Distribution Upon Dissolution and Capital Account Adjustments. . .  71
     8.6  Compliance with Timing Requirements of Treasury Regulations. . . .  71

ARTICLE 9 MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . .  71
     9.1  Other Interests. . . . . . . . . . . . . . . . . . . . . . . . . .  71
     9.2  Damages; Certain Cure Rights; Offset . . . . . . . . . . . . . . .  72
     9.3  No Agency. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
     9.4  Governing Law. . . . . . . . . . . . . . . . . . . . . . . . . . .  73


                                         -ii-
<PAGE>

     9.5  Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
     9.6  Pronouns and Plurals . . . . . . . . . . . . . . . . . . . . . . .  74
     9.7  Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  74
     9.8  Severability . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
     9.9  Titles and Captions. . . . . . . . . . . . . . . . . . . . . . . .  75
     9.10 Agreement in Counterparts. . . . . . . . . . . . . . . . . . . . .  75
     9.11 Binding Agreement. . . . . . . . . . . . . . . . . . . . . . . . .  75
     9.12 Further Assurances . . . . . . . . . . . . . . . . . . . . . . . .  75
     9.13 Waiver of Partition. . . . . . . . . . . . . . . . . . . . . . . .  75
     9.14 Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . .  76
     9.15 Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
     9.16 No Drafting Presumption. . . . . . . . . . . . . . . . . . . . . .  76
     9.17 No Third-Party Beneficiaries . . . . . . . . . . . . . . . . . . .  76

EXHIBIT A      DEFINED TERMS . . . . . . . . . . . . . . . . . . . . . . . . A-1

EXHIBIT B      FUNDING PROPORTIONS, SECTION 2.1.1 CONTRIBUTIONS
               AND RESIDUAL PERCENTAGES. . . . . . . . . . . . . . . . . . . B-1

EXHIBIT C      INITIAL DEVELOPMENT PLAN FOR LAVA RIDGE LAND. . . . . . . . . C-1

EXHIBIT D-     LEGAL DESCRIPTION OF THE LAVA RIDGE LAND. . . . . . . . . . D-1-1

EXHIBIT E      OWNERSHIP OF PARTNERS . . . . . . . . . . . . . . . . . . . . E-1

EXHIBIT F      [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . F-1

EXHIBIT G      [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . G-1

EXHIBIT H      [INTENTIONALLY OMITTED

EXHIBIT I      [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . I-1

EXHIBIT J      PROCEDURES FOR SUPERVISING EMPLOYEE AND AFFILIATE COMPLIANCE  J-1

EXHIBIT K      [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . K-1

EXHIBIT L      OPERATING APPROVAL STANDARDS. . . . . . . . . . . . . . . . . L-1

EXHIBIT M      HIGHRIDGE REIMBURSEMENT SCHEDULE FOR THE LAVA RIDGE LAND. . . M-1

EXHIBIT N      FORM OF DISBURSEMENT REQUEST. . . . . . . . . . . . . . . . . N-1



                                        -iii-

<PAGE>
                                                                  Exhibit 10.5


                    AMENDMENT NO. 1 TO REVOLVING CREDIT AGREEMENT


     This AMENDMENT NO. 1 TO REVOLVING CREDIT AGREEMENT (this "AMENDMENT NO. 1")
is made as of July __, 1998 by and among (a) Mack-Cali Realty, L.P. (the
"BORROWER"), (b) The Chase Manhattan Bank; Fleet National Bank; Bankers Trust;
The Bank of New York; Bayerische Landesbank Girozentrale; Citizens Bank of Rhode
Island; Commerzbank Aktiengesellschaft, New York Branch; Creditanstalt Corporate
Finance, Inc.; Crestar Bank; DG Bank Deutsche Genossenschaftsbank, New York
Branch; Dresdner Bank AG, New York Branch and Grand Cayman Branch; European
American Bank; Erste Bank; The First National Bank of Chicago; First Union
National Bank; Bayerische Hypotheken- und Wechsel- Bank Aktiengesellschaft, New
York Branch; Key Bank; KBC Bank N.V. (f/k/a Kredietbank, N.V.); LaSalle National
Bank; Mellon Bank, N.A.; Nationsbank; PNC Bank, National Association; Societe
Generale; Summit Bank; The Tokai Bank, Limited - New York Branch; US Trust
(collectively, the "LENDERS"), (c) The Chase Manhattan Bank, as Administrative
Agent (in such capacity, the "ADMINISTRATIVE AGENT") for the Lenders; and (d)
Bank Leumi USA and Bank One, Arizona, NA (together, the "NEW LENDERS").

     WHEREAS, the Borrower, the Lenders and the Administrative Agent are parties
to a Revolving Credit Agreement dated as of April 16, 1998 (the "CREDIT
AGREEMENT"), pursuant to which the Lenders have agreed to make loans to the
Borrower on the terms and conditions set forth therein;

     WHEREAS, the Borrower has requested, and the Lenders and the Administrative
Agent have agreed to increase the credit limit of the Credit Agreement and add
the New Lenders as "Lenders" under the Credit Agreement;

     NOW, THEREFORE, in consideration of the foregoing premises, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, and fully intending to be legally bound by this Amendment No. 1,
the parties hereto agree as follows:

     1.   DEFINITIONS.  Capitalized terms used herein without definition shall
have the meanings assigned to such terms in the Credit Agreement.

     2.   AMENDMENTS TO CREDIT AGREEMENT.  As of the Effective Date (as defined
in Section 4 hereof) the Credit Agreement is hereby amended as follows:

<PAGE>
                                         -2-


          2.1. TOTAL COMMITMENT.  In line 2 of the definition of TOTAL
     COMMITMENT in Section 1.1 of the Credit Agreement, the amount
     "$870,000,000" is hereby deleted and the amount "$900,000,000" is
     substituted in place thereof.

          2.2. INCREASE IN TOTAL COMMITMENT.  In line 5 of Section 2.2 of the
     Credit Agreement, the amount "$130,000,000" is hereby deleted and the
     amount "$100,000,000" is substituted in place thereof.

          2.3. COMMITMENT PERCENTAGES.  SCHEDULE 1.2 to the Credit Agreement is
     hereby deleted in its entirety and SCHEDULE 1.2 to this Amendment No. 1 is
     substituted in place thereof.

          2.4. NEW LENDERS.  All references in the Credit Agreement to "Lenders"
     shall be deemed to include the New Lenders.  Each of the New Lenders
     appoints and authorizes the Administrative Agent to take such action on its
     behalf and to exercise such powers under the Credit Agreement and the other
     Loan Documents as are delegated to the Administrative Agent by the terms
     thereof, together with such powers as are reasonably incidental thereto. 
     Each of the New Lenders agrees that it will perform in accordance with
     their terms all the obligations which by the terms of the Credit Agreement
     are required to be performed by it as a Lender.

          2.5. CONSENT TO PARTICIPATION.  The Borrower, the Administrative Agent
     and each of the Lenders hereby consents to Bank Leumi USA's grant of a
     participation interest to one of its Affiliates in an amount less than
     $15,000,000.

     3.   PROVISIONS OF GENERAL APPLICATION.

          3.1. NO OTHER CHANGES.  Except as otherwise expressly provided or
     contemplated by this Amendment No. 1, all of the terms, conditions and
     provisions of the Credit Agreement remain unaltered and in full force and
     effect.  The Credit Agreement and this Amendment No. 1 shall be read and
     construed as one agreement.  The making of the amendments in this Amendment
     No. 1 does not imply any obligation or agreement by the Administrative
     Agent or any Lender to make any other amendment, waiver, modification or
     consent as to any matter on any subsequent occasion.

          3.2. GOVERNING LAW.  This Amendment No. 1 is intended to take effect
     as a sealed instrument and shall be deemed to be a contract under the laws
     of the State of New York.  This Amendment

<PAGE>
                                         -3-


     No. 1 and the rights and obligations of each of the parties hereto are
     contracts under the laws of the State of New York and shall for all
     purposes be construed in accordance with and governed by the laws of such
     State (excluding the laws applicable to conflicts or choice of law).

          3.3. ASSIGNMENT.  This Amendment No. 1 shall be binding upon and inure
     to the benefit of each of the parties hereto and their respective permitted
     successors and assigns.

          3.4. COUNTERPARTS.  This Amendment No. 1 may be executed in any number
     of counterparts, but all such counterparts shall together constitute but
     one and the same agreement.  In making proof of this Amendment No. 1, it
     shall not be necessary to produce or account for more than one counterpart
     thereof signed by each of the parties hereto.

     4.   EFFECTIVENESS OF THIS AMENDMENT NO. 1.  This Amendment No. 1 shall
become effective on the date on which the following conditions precedent are
satisfied (such date being hereinafter referred to as the "EFFECTIVE DATE"):

          (a)  Execution and delivery to the Administrative Agent by each Lender
     (including the New Lenders), the Borrower, the Guarantors and the Agents of
     this Amendment No. 1.

          (b)  Execution and delivery to the Administrative Agent of a
     certificate of the Borrower confirming that there have been no changes to
     its charter documents since April 16, 1998.

          (c)  Delivery to the Administrative Agent of resolutions of the board
     of directors of the general partner of the Borrower authorizing this
     Amendment No. 1, including the increased loan amount requested.

          (d)  Execution and delivery to the Administrative Agent by the
     Borrower of Revolving Credit Notes in favor of Bank Leumi USA in the amount
     of $10,000,000 and Bank One, Arizona, NA in the amount of $20,000,000.

          (e)  Delivery to the Administrative Agent by Pryor, Cashman, Sherman &
     Flynn, as counsel to the Borrower, of an opinion addressed to the Lenders,
     the New Lenders and the Administrative


<PAGE>
                                         -4-


     Agent in form and substance reasonably satisfactory to the Lenders, the New
     Lenders and the Administrative Agent.

          (f)  Payment by the Borrower of any LIBOR Breakage Costs, and
     indemnification of the Administrative Agent and the Lenders as provided in
     Section 4.8 of the Credit Agreement for any LIBOR Breakage Costs, arising
     out of the addition of the New Lenders as "Lenders" under the Credit
     Agreement.

          (g)  Payment by the Borrower of all fees payable pursuant to the last
     sentence of the first paragraph of Section 2.2 of the Credit Agreement
     which fees are set forth in a letter agreement of even date herewith.

<PAGE>
                                         -5-


     IN WITNESS WHEREOF, the undersigned have duly executed and delivered this
Amendment No. 1 as of the date first set forth above.

                              MACK-CALI REALTY, L.P.

                              By: Mack-Cali Realty Corporation, its general
                              partner

                              By:
                                 --------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President

<PAGE>
                                         -6-


                              
                              
                              THE CHASE MANHATTAN BANK, individually and as
                              Administrative Agent
                              
                              By:
                                 --------------------------------
                                 Name:  Marc E. Costantino
                                 Title: Vice President


<PAGE>
                                         -7-


                              
                              
                              FLEET NATIONAL BANK, individually and as
                              Syndication Agent
                              
                              By:
                                 --------------------------------
                                 Name:  Mark E. Dalton
                                 Title: Senior Vice President





<PAGE>
                                         -8-

                              
                              
                              BANKERS TRUST
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 





<PAGE>
                                         -9-


                              THE BANK OF NEW YORK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 





<PAGE>
                                         -10-


                         BAYERISCHE LANDESBANK GIROZENTRALE
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 


<PAGE>
                                         -11-


                              
                              
                              CITIZENS BANK OF RHODE ISLAND
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 



<PAGE>
                                         -12-


                              
                              
                              COMMERZBANK AKTIENGESELLSCHAFT, NEW YORK BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
     
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 



<PAGE>
                                         -13-



                              
                              
                              CREDITANSTALT CORPORATE FINANCE, INC.
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
     
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 



<PAGE>
                                         -14-


                              
                              
                              CRESTAR BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -15-
                              
                              
                              DG BANK DEUTSCHE GENOSSENSCHAFTSBANK,
                              NEW YORK BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -16-

                              
                              DRESDNER BANK AG, NEW YORK BRANCH
                              AND GRAND CAYMAN BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:
                                 Title: 
     
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -17-
                              
                              
                              EUROPEAN AMERICAN BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -18-


                              ERSTE BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -19-

                              
                              THE FIRST NATIONAL BANK OF CHICAGO
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -20-


                              FIRST UNION NATIONAL BANK
                              

                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -21-

                              BAYERISCHE HYPOTHEKEN- UND WECHSEL- BANK
                              AKTIENGESELLSCHAFT, NEW YORK BRANCH
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -22-


                              KEY BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -23-


                              KREDIETBANK, N.V.
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -24-


                              MELLON BANK, N.A.
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -25-

                              NATIONSBANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -26-

                              PNC BANK, NATIONAL ASSOCIATION
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -27-


                              SOCIETE GENERALE
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -28-


                              SUMMIT BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -29-


                              THE TOKAI BANK, LIMITED
                              NEW YORK BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -30-
                              

                              US TRUST
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -31-


                              LASALLE NATIONAL BANK

                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -32-


                              BANK LEUMI USA
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -33-


                              BANK ONE, ARIZONA, NA
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -34-


Each of the undersigned Guarantors hereby acknowledges the foregoing Amendment
No. 1 and reaffirms its guaranty of the Obligations (as defined in the Guaranty
executed and delivered by such Guarantor) under the Credit Agreement and the
other Loan Documents, each as amended hereby or in connection herewith, in
accordance with the Guaranty executed and delivered by such Guarantor.

                              MACK-CALI REALTY CORPORATION
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer


                              11 COMMERCE DRIVE ASSOCIATES
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings VI, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer


<PAGE>
                                         -35-

                              SIX COMMERCE DRIVE ASSOCIATES
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings III, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              20 COMMERCE DRIVE ASSOCIATES
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings IX, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -36-


                              CENTURY PLAZA ASSOCIATES
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings II, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              C.W. ASSOCIATES
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings VII, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              

<PAGE>
                                         -37-


                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              

                              D.B.C. ASSOCIATES
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings VIII, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI BUILDING V ASSOCIATES
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -38-


                              
                              
                              By: Cali Property Holdings I, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              500 COLUMBIA TURNPIKE ASSOCIATES
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings V, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              CHESTNUT RIDGE ASSOCIATES
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -39-


                              
                              By: Cali Property Holdings X, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              ROSELAND II LIMITED PARTNERSHIP
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              OFFICE ASSOCIATES, LTD.
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              GROVE STREET ASSOCIATES OF JERSEY CITY
                              LIMITED PARTNERSHIP

<PAGE>
                                         -40-


                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              



<PAGE>
                                         -41-



                              TENBY CHASE APARTMENTS
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings IV, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              600 PARSIPPANY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub V, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              400 RELLA REALTY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -42-

                              
                              VAUGHN PRINCETON ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub V, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MONMOUTH/ATLANTIC REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              JUMPING BROOK REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -43-

                              
                              HORIZON CENTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              COMMERCENTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              400 PRINCETON ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub V, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
<PAGE>
                                         -44-


                              CAL-TREE REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MOUNT AIRY REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              FIVE SENTRY REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              300 TICE REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -45-


                              
                              BRIDGE PLAZA REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI AIRPORT REALTY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub VIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CROSS WESTCHESTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
<PAGE>
                                         -46-


                              MID-WESTCHESTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              SO. WESTCHESTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              WHITE PLAINS REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XIV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer


<PAGE>
                                         -47-


                              MARTINE AVENUE REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI STAMFORD REALTY ASSOCIATES L.P. D/B/A RM
                              STAMFORD REALTY ASSOCIATES
                              
                              By: Mack-Cali Sub XII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI PENNSYLVANIA REALTY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub XV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
<PAGE>
                                         -48-


                              SHELTON REALTY ASSOCIATES LIMITED PARTNERSHIP
                              
                              By: Mack-Cali Sub XII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MOORESTOWN REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XVI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK-CALI PROPERTIES CO. #3
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -49-


                              MACK-CALI METROPOLITAN, LTD L.P.
                              
                              By: Mack-Cali Sub XX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK PROPERTIES CO.
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK-CALI NORTH HILLS L.P.
                              
                              By: Mack-Cali Sub XIV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              120 PASSAIC STREET LLC
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>

                                         -50-


                              MACK-CALI TEXAS PROPERTY, L.P.
                              
                              By: Mack-Cali Sub XVII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              

                              BRANDEIS BUILDING INVESTORS, L.P.
                              
                              By: Mack-Cali Sub XIX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              

                              MACK-CALI CENTURY III INVESTORS, L.P.
                              
                              By: Mack-Cali Sub XVIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              

<PAGE>
                                         -51-


                              PHELAN REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XXI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              PRINCETON CORPORATE CENTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XVI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK-CALI PROPERTY TRUST
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -52-


                                     SCHEDULE 1.2

LENDER                           COMMITMENT AMOUNT        COMMITMENT PERCENTAGE
- ------                           -----------------        ---------------------

The Chase Manhattan Bank            $60,000,000                  6.66667%
270 Park Avenue
New York, NY  10017 

Fleet National Bank                 $60,000,000                  6.66667%
111 Westminster Street
Providence, RI  02903

PNC Bank, National Association      $60,000,000                  6.66667%
Two Tower Center Blvd.
East Brunswick, NJ  08816

Bankers Trust Company               $50,000,000                  5.55556%
One Bankers Trust Plaza
New York, NY  10006


Commerzbank AG, New York            $50,000,000                  5.55556%
Branch
2 World Financial Center
New York, NY  10281-1050

The First National Bank             $50,000,000                  5.55556%
 of Chicago
One First National Plaza
Suite 0151, 1-14
Chicago, IL  60670
First Union National Bank           $50,000,000                  5.55556%
One First Union Center
Charlotte, NC  28288-0166

Nationsbank                         $50,000,000                  5.55556%
8300 Greensboro Drive
McLean, VA  22102

Creditanstalt Corporate             $35,000,000                  3.88889%
 Finance, Inc.
2 Ravinia Drive
Atlanta, GA  30346

Dresdner Bank AG, New York          $35,000,000                  3.88889%
Branch and Grand Cayman Branch
75 Wall Street
New York, NY  10005


<PAGE>
                                         -2-


Bayerische Hypothexen- Und          $35,000,000                  3.88889%
Wechsel- Bank Aktiengesellschaft
New York Branch
32 Old Slip, Financial Square
New York, NY  10005

Societe Generale                    $35,000,000                  3.88889%
2001 Ross Avenue
Dallas, TX  75201

Summit Bank                         $35,000,000                  3.88889%
750 Walnut Avenue
Cranford, NJ  07016

KBC Bank N.V.                       $30,000,000                  3.33333%
(f/k/a Kredietbank, N.V.)
125 West 55th Street
New York, NY  10019 

Key Bank127 Public Square           $25,000,000                  2.77778%
Cleveland, OH  44114-1306

Mellon Bank, N.A.                   $25,000,000                  2.77778%
1735 Market Street
Philadelphia, PA  19103

Bank of New York                    $20,000,000                  2.22222%
One Wall Street
New York, NY  10015

Citizens Bank of Rhode Island       $20,000,000                  2.22222%
1 Citizens Plaza
Providence, RI  02903-1339

Crestar Bank                        $20,000,000                  2.22222%
8245 Boone Blvd.
Vienna, VA  

DG Bank Deutsche                    $20,000,000                  2.22222%
Genossenschaftsbank,
New York Branch
609 Fifth Avenue
New York, NY  10017-1021

The Tokai Bank Limited              $20,000,000                  2.22222%
Park Avenue Plaza
55 East 52nd Street
New York, NY  10055

US Trust                            $20,000,000                  2.22222%
40 Court Street
Boston, MA  02108

<PAGE>
                                         -3-


Bank One, Arizona, NA               $20,000,000                  2.22222%
241 North Cental Avenue
Phoenix, AZ  85004

European American Bank              $17,500,000                  1.94445%
335 Madison Avenue
New York, NY  10017

LaSalle National Bank               $17,500,000                 1.94445%
135 South LaSalle Street
Chicago, IL  60603

Bayerische Landesbank               $15,000,000                 1.66667%
Girozentrale
580 Lexington Avenue
New York, NY  10022

Erste Bank                          $15,000,000                 1.66667%
280 Park Avenue, West Building
New York, NY  10017

Bank Leumi USA                      $10,000,000                 1.11111%
565 Fifth Avenue
New York, NY  10036 
                                   ------------                 --------
TOTAL                              $900,000,000                     100%



<PAGE>
                                                                  Exhibit 10.6

                   AMENDMENT NO. 2 TO REVOLVING CREDIT AGREEMENT
                                          
                                       among
                                          
                               MACK-CALI REALTY, L.P.
                                          
                                        and
                                          
                             THE CHASE MANHATTAN BANK,
                              FLEET NATIONAL BANK and
                           OTHER LENDERS WHICH MAY BECOME
                                  PARTIES THERETO
                                          
                                        with
                                          
                             THE CHASE MANHATTAN BANK,
                              AS ADMINISTRATIVE AGENT,
                                          
                                FLEET NATIONAL BANK,
                               AS SYNDICATION AGENT,
                                          
                          PNC BANK, NATIONAL ASSOCIATION,
                               AS DOCUMENTATION AGENT
                                          
                                    NATIONSBANK,
                               AS DOCUMENTATION AGENT
                                          
                               CHASE SECURITIES INC.
                              and FLEET NATIONAL BANK,
                                    AS ARRANGERS
                                          
                                  BANKERS TRUST, 
                           COMMERZBANK AKTIENGESELLSCHAFT
                                  NEW YORK BRANCH,
                        FIRST NATIONAL BANK OF CHICAGO, and
                             FIRST UNION NATIONAL BANK,
                                 AS MANAGING AGENTS
                                          
                                        and
                                          
                       CREDITANSTALT CORPORATE FINANCE, INC.,
                             DRESDNER BANK AG, NEW YORK
                          BRANCH AND GRAND CAYMAN BRANCH,
                              EUROPEAN AMERICAN BANK,
                                     HYPOBANK,
                                 SOCIETE GENERALE,
                                  and SUMMIT BANK,
                                    AS CO-AGENTS
                                          
                           Dated as of December 30, 1998

<PAGE>

                    AMENDMENT NO. 2 TO REVOLVING CREDIT AGREEMENT

     This AMENDMENT NO. 2 TO REVOLVING CREDIT AGREEMENT (this "AMENDMENT NO. 2")
is made as of December 30, 1998 by and among (a) Mack-Cali Realty, L.P. (the
"BORROWER"), (b) The Chase Manhattan Bank; Fleet National Bank; Bankers Trust;
The Bank of New York; Bayerische Landesbank Girozentrale; Citizens Bank of Rhode
Island; Commerzbank Aktiengesellschaft, New York Branch; Creditanstalt Corporate
Finance, Inc.; Crestar Bank; DG Bank Deutsche Genossenschaftsbank, New York
Branch; Dresdner Bank AG, New York Branch and Grand Cayman Branch; European
American Bank; Erste Bank; The First National Bank of Chicago; First Union
National Bank; Bayerische Hypotheken- und Wechsel- Bank Aktiengesellschaft, New
York Branch; Key Bank; KBC Bank N.V. (f/k/a Kredietbank, N.V.); LaSalle National
Bank; Mellon Bank, N.A.; NationsBank; PNC Bank, National Association; Societe
Generale; Summit Bank; The Tokai Bank, Limited - New York Branch; USTrust; Bank
Leumi USA and Bank One, Arizona, NA (collectively, the "LENDERS"), and (c) The
Chase Manhattan Bank, as Administrative Agent (in such capacity, the
"ADMINISTRATIVE AGENT") for the Lenders.

     WHEREAS, the Borrower, the Lenders (including PNC Bank, National
Association and NationsBank as Co-Documentation Agents) and the Administrative
Agent are parties to a Revolving Credit Agreement dated as of April 16, 1998, as
amended by Amendment No. 1 to Revolving Credit Agreement dated as of July 20,
1998 (the "CREDIT AGREEMENT"), pursuant to which the Lenders have agreed to make
loans to the Borrower on the terms and conditions set forth therein;

     WHEREAS, the Borrower is exercising its right pursuant to Section 2.2 of
the Credit Agreement, to increase the total credit limit of the Credit
Agreement, with certain of the Lenders agreeing to increase their individual
Commitments;

     NOW, THEREFORE, in consideration of the foregoing premises, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, and fully intending to be legally bound by this Amendment No. 2,
the parties hereto agree as follows:

<PAGE>

     1.   DEFINITIONS.  Capitalized terms used herein without definition shall
have the meanings assigned to such terms in the Credit Agreement.

     2.   AMENDMENTS TO CREDIT AGREEMENT.  As of the Effective Date (as defined
in Section 4 hereof) the Credit Agreement is hereby amended as follows:

          2.1. TOTAL COMMITMENT.  The definition of TOTAL COMMITMENT in Section
     1.1 of the Credit Agreement is amended by (a) deleting the amount
     "$900,000,000" in line 2 thereof and substituting in place thereof the
     amount "$1,000,000,000" and (b) deleting the phrase ", as such amount may
     be increased pursuant to Section 2.2 hereof".

          2.2. COMMITMENT PERCENTAGES.  SCHEDULE 1.2 to the Credit Agreement is
     hereby deleted in its entirety and SCHEDULE 1.2 to this Amendment No. 2 is
     substituted in place thereof.

     3.   PROVISIONS OF GENERAL APPLICATION.

          3.1. NO OTHER CHANGES.  Except as otherwise expressly provided or
     contemplated by this Amendment No. 2, all of the terms, conditions and
     provisions of the Credit Agreement remain unaltered and in full force and
     effect.  The Credit Agreement and this Amendment No. 2 shall be read and
     construed as one agreement.  The making of the amendments in this Amendment
     No. 2 does not imply any obligation or agreement by the Administrative
     Agent or any Lender to make any other amendment, waiver, modification or
     consent as to any matter on any subsequent occasion.

          3.2. GOVERNING LAW.  This Amendment No. 2 is intended to take effect
     as a sealed instrument and shall be deemed to be a contract under the laws
     of the State of New York.  This Amendment No. 2 and the rights and
     obligations of each of the parties hereto are contracts under the laws of
     the State of New York and shall for all purposes be construed in accordance
     with and governed by the laws of such State (excluding the laws applicable
     to conflicts or choice of law).

          3.3. ASSIGNMENT.  This Amendment No. 2 shall be binding upon and inure
     to the benefit of each of the parties hereto and their respective permitted
     successors and assigns.

          3.4. COUNTERPARTS.  This Amendment No. 2 may be executed in any number
     of counterparts, but all such counterparts shall together constitute but
     one and the same agreement.  In making proof of this Amendment No. 2, it
     shall not be necessary to produce or account for more than one counterpart
     thereof signed by each of the parties hereto.

<PAGE>

     4.   EFFECTIVENESS OF THIS AMENDMENT NO. 2.  This Amendment No. 2 shall
become effective on the date on which the following conditions precedent are
satisfied (such date being hereinafter referred to as the "EFFECTIVE DATE"):

          (a)  Execution and delivery to the Administrative Agent by each
     Lender, the Borrower, and the Agents of this Amendment No. 2, and
     reaffirmation of each Guaranty by each Guarantor.

          (b)  Execution and delivery to the Administrative Agent of a
     certificate of the Borrower confirming that there have been no changes to
     its charter documents since April 16, 1998, except for Amendment No. 1 to
     Second Amended and Restated Agreement of Limited Partnership of Mack-Cali
     Realty, L.P.

          (c)  Delivery to the Administrative Agent of resolutions of the board
     of directors of the general partner of the Borrower authorizing this
     Amendment No. 2, including the increased loan amount requested.

          (d)  Execution and delivery to the Administrative Agent by the
     Borrower of Amended and Restated Revolving Credit Notes in favor of each
     Lender that is increasing its Commitment  hereunder in an amount equal to
     such Lender's new Commitment hereunder.

          (e)  Delivery to the Administrative Agent by Pryor, Cashman, Sherman &
     Flynn, as counsel to the Borrower, of an opinion addressed to the Lenders
     and the Administrative Agent in form and substance reasonably satisfactory
     to the Lenders and the Administrative Agent.

          (f)  Payment by the Borrower of any LIBOR Breakage Costs, and
     indemnification of the Administrative Agent and the Lenders as provided in
     Section 4.8 of the Credit Agreement for any LIBOR Breakage Costs, arising
     out of the increase of the Total Commitment and certain of the Commitments
     and the adjustment of the Commitment Percentages pursuant to this Amendment
     No. 2.

          (g)  Payment by the Borrower of all fees payable pursuant to the last
     sentence of the first paragraph of Section 2.2 of the Credit Agreement
     which fees are set forth in a letter agreement of even date herewith.

<PAGE>
                                         -5-


     IN WITNESS WHEREOF, the undersigned have duly executed and delivered this
Amendment No. 1 as of the date first set forth above.

                              MACK-CALI REALTY, L.P.

                              By: Mack-Cali Realty Corporation, its general
                              partner

                              By:
                                 --------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President

<PAGE>
                                         -6-


                              
                              
                              THE CHASE MANHATTAN BANK, individually and as
                              Administrative Agent
                              
                              By:
                                 --------------------------------
                                 Name:  Marc E. Costantino
                                 Title: Vice President


<PAGE>
                                         -7-


                              
                              
                              FLEET NATIONAL BANK, individually and as
                              Syndication Agent
                              
                              By:
                                 --------------------------------
                                 Name:  Mark E. Dalton
                                 Title: Senior Vice President





<PAGE>
                                         -8-

                              
                              
                              BANKERS TRUST
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 





<PAGE>
                                         -9-


                              THE BANK OF NEW YORK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 





<PAGE>
                                         -10-


                         BAYERISCHE LANDESBANK GIROZENTRALE
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 


<PAGE>
                                         -11-


                              
                              
                              CITIZENS BANK OF RHODE ISLAND
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 



<PAGE>
                                         -12-


                              
                              
                              COMMERZBANK AKTIENGESELLSCHAFT, NEW YORK BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
     
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 



<PAGE>
                                         -13-



                              
                              
                              CREDITANSTALT CORPORATE FINANCE, INC.
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
     
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 



<PAGE>
                                         -14-


                              
                              
                              CRESTAR BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -15-
                              
                              
                              DG BANK DEUTSCHE GENOSSENSCHAFTSBANK,
                              NEW YORK BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -16-

                              
                              DRESDNER BANK AG, NEW YORK BRANCH
                              AND GRAND CAYMAN BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:
                                 Title: 
     
     
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -17-
                              
                              
                              EUROPEAN AMERICAN BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -18-


                              ERSTE BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -19-

                              
                              THE FIRST NATIONAL BANK OF CHICAGO
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -20-


                              FIRST UNION NATIONAL BANK
                              

                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -21-

                              BAYERISCHE HYPOTHEKEN- UND WECHSEL- BANK
                              AKTIENGESELLSCHAFT, NEW YORK BRANCH
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -22-


                              KEY BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -23-


                              KREDIETBANK, N.V.
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -24-


                              MELLON BANK, N.A.
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -25-

                              NATIONSBANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -26-

                              PNC BANK, NATIONAL ASSOCIATION
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -27-


                              SOCIETE GENERALE
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -28-


                              SUMMIT BANK
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -29-


                              THE TOKAI BANK, LIMITED
                              NEW YORK BRANCH
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -30-
                              

                              US TRUST
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -31-


                              LASALLE NATIONAL BANK

                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -32-


                              BANK LEUMI USA
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -33-


                              BANK ONE, ARIZONA, NA
                              
                              
                              By:
                                 --------------------------------
                                 Name:  
                                 Title: 




<PAGE>
                                         -34-


Each of the undersigned Guarantors hereby acknowledges the foregoing Amendment
No. 1 and reaffirms its guaranty of the Obligations (as defined in the Guaranty
executed and delivered by such Guarantor) under the Credit Agreement and the
other Loan Documents, each as amended hereby or in connection herewith, in
accordance with the Guaranty executed and delivered by such Guarantor.

                              MACK-CALI REALTY CORPORATION
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer


                              11 COMMERCE DRIVE ASSOCIATES
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings VI, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer


<PAGE>
                                         -35-

                              SIX COMMERCE DRIVE ASSOCIATES
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings III, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              20 COMMERCE DRIVE ASSOCIATES
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings IX, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -36-


                              CENTURY PLAZA ASSOCIATES
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings II, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              C.W. ASSOCIATES
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings VII, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              

<PAGE>
                                         -37-


                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              

                              D.B.C. ASSOCIATES
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings VIII, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI BUILDING V ASSOCIATES
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -38-


                              
                              
                              By: Cali Property Holdings I, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              500 COLUMBIA TURNPIKE ASSOCIATES
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings V, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub I, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              CHESTNUT RIDGE ASSOCIATES
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -39-


                              
                              By: Cali Property Holdings X, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              ROSELAND II LIMITED PARTNERSHIP
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              OFFICE ASSOCIATES, LTD.
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              GROVE STREET ASSOCIATES OF JERSEY CITY
                              LIMITED PARTNERSHIP

<PAGE>
                                         -40-


                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              



<PAGE>
                                         -41-



                              TENBY CHASE APARTMENTS
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              By: Cali Property Holdings IV, L.P., its general
                              partner
                              
                              By: Mack-Cali Sub IV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              600 PARSIPPANY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub V, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              400 RELLA REALTY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -42-

                              
                              VAUGHN PRINCETON ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub V, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MONMOUTH/ATLANTIC REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              JUMPING BROOK REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -43-

                              
                              HORIZON CENTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              COMMERCENTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              400 PRINCETON ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub V, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
<PAGE>
                                         -44-


                              CAL-TREE REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MOUNT AIRY REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              FIVE SENTRY REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              300 TICE REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -45-


                              
                              BRIDGE PLAZA REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI AIRPORT REALTY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub VIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CROSS WESTCHESTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
<PAGE>
                                         -46-


                              MID-WESTCHESTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              SO. WESTCHESTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub VI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              WHITE PLAINS REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XIV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer


<PAGE>
                                         -47-


                              MARTINE AVENUE REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI STAMFORD REALTY ASSOCIATES L.P. D/B/A RM
                              STAMFORD REALTY ASSOCIATES
                              
                              By: Mack-Cali Sub XII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              CALI PENNSYLVANIA REALTY ASSOCIATES, L.P.
                              
                              By: Mack-Cali Sub XV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
<PAGE>
                                         -48-


                              SHELTON REALTY ASSOCIATES LIMITED PARTNERSHIP
                              
                              By: Mack-Cali Sub XII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MOORESTOWN REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XVI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK-CALI PROPERTIES CO. #3
                              
                              By: Mack-Cali Sub II, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>
                                         -49-


                              MACK-CALI METROPOLITAN, LTD L.P.
                              
                              By: Mack-Cali Sub XX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK PROPERTIES CO.
                              
                              By: Mack-Cali Sub III, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK-CALI NORTH HILLS L.P.
                              
                              By: Mack-Cali Sub XIV, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              120 PASSAIC STREET LLC
                              
                              By: Mack-Cali Sub IX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>

                                         -50-


                              MACK-CALI TEXAS PROPERTY, L.P.
                              
                              By: Mack-Cali Sub XVII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              

                              BRANDEIS BUILDING INVESTORS, L.P.
                              
                              By: Mack-Cali Sub XIX, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              

                              MACK-CALI CENTURY III INVESTORS, L.P.
                              
                              By: Mack-Cali Sub XVIII, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              

<PAGE>
                                         -51-


                              PHELAN REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XXI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              PRINCETON CORPORATE CENTER REALTY ASSOCIATES L.P.
                              
                              By: Mack-Cali Sub XVI, Inc., its general partner
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer
                              
                              
                              MACK-CALI PROPERTY TRUST
                              
                              
                              By:
                                 -------------------------------
                                 Name:  Barry Lefkowitz
                                 Title: Vice President and Chief Financial
                                        Officer

<PAGE>

                                     Schedule 1.2


LENDER                                COMMITMENT AMOUNT    COMMITMENT PERCENTAGE

The Chase Manhattan Bank                 $73,750,000               7.375%
270 Park Avenue
New York, NY  10017

Fleet National Bank                      $73,750,000               7.375%
111 Westminster Street
Providence, RI  02903

NationsBank                              $73,750,000               7.375%
8300 Greensboro Drive
McLean, VA  22102

PNC Bank, National Association           $73,750,000               7.375%
Two Tower Center Blvd.
East Brunswick, NJ  08816

First Union National Bank                $65,000,000               6.5%
One First Union Center
Charlotte, NC  28288-0166

Bankers Trust Company                    $50,000,000               5.0%
One Bankers Trust Plaza
New York, NY  10006

Commerzbank AG, New York Branch          $50,000,000               5.0%
2 World Financial Center
New York, NY  10281-1050

The First National Bank of Chicago       $50,000,000               5.0%
One First National Plaza
Suite 0151, 1-14
Chicago, IL  60670

Dresdner Bank AG, New York               $45,000,000               4.5%
Branch and Grand Cayman Branch
75 Wall Street
New York, NY  10005

Bank Austria Creditanstalt               $35,000,000               3.5%
Corporate Finance, Inc.
2 Ravinia Drive
Atlanta, GA  30346

<PAGE>

Bayerische Hypo-und Vereinsbank AG       $35,000,000               3.5%
New York Branch
32 Old Slip, Financial Square
New York, NY  10005

Societe Generale                         $35,000,000               3.5%
2001 Ross Avenue
Dallas, TX  75201

Summit Bank                              $35,000,000               3.5%
750 Walnut Avenue
Cranford, NJ  07016

KBC Bank N.V.                            $30,000,000               3.0%
(f/k/a Kredietbank, N.V.)
125 West 55th Street
New York, NY  10019

Key Bank National Association            $25,000,000               2.5%
127 Public Square
Cleveland, OH  44114-1306

Mellon Bank, N.A.                        $25,000,000               2.5%
1735 Market Street
Philadelphia, PA  19103

US Trust                                 $25,000,000               2.5%
40 Court Street
Boston, MA  02108

Bank of New York                         $20,000,000               2.0%
One Wall Street
New York, NY  10015


Citizens Bank of Rhode Island            $20,000,000               2.0%
1 Citizens Plaza
Providence, RI  02903-1339

Crestar Bank                             $20,000,000               2.0%
8245 Boone Blvd.
Vienna, VA  

DG Bank Deutsche                         $20,000,000               2.0%
Genossenschaftsbank AG,
New York Branch
609 Fifth Avenue
New York, NY  10017-1021

The Tokai Bank Limited                   $20,000,000               2.0%
Park Avenue Plaza
55 East 52nd Street
New York, NY  10055

<PAGE>


Bank One, Arizona, NA                    $20,000,000               2.0%
241 North Cental Avenue
Phoenix, AZ  85004

Bayerische Landesbank                    $20,000,000               2.0%
Girozentrale
580 Lexington Avenue
New York, NY  10022

European American Bank                   $17,500,000               1.75%
335 Madison Avenue
New York, NY  10017

LaSalle National Bank                    $17,500,000               1.75%
135 South LaSalle Street
Chicago, IL  60603

Erste Bank                               $15,000,000               1.5%
280 Park Avenue, West Building
New York, NY  10017

Bank Leumi USA                           $10,000,000               1.0%
565 Fifth Avenue
New York, NY  10036
                                      --------------            -------

TOTAL                                 $1,000,000,000               100%



<PAGE>

                                                                      Exhibit 23

CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in the Registration 
Statement on Form S-3 (No. 333-57103) of Mack-Cali Realty, L.P. of our report 
dated February 23, 1999, appearing in this Form 10-K.

We hereby consent to the incorporation by reference in this annual report on 
Form 10-K of Mack-Cali Realty, L.P. for the year ended December 31, 1998 of 
our report dated February 26, 1998 included in its Registration Statement on 
Form S-3 (No. 333-57103) dated September 25, 1998 relating to the financial 
statements and financial statement schedule for the three years ended 
December 31, 1997.

/s/ PricewaterhouseCoopers LLP
- ------------------------------
PricewaterhouseCoopers LLP
New York, New York
March 3, 1999




<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          11,835
<SECURITIES>                                         0
<RECEIVABLES>                                    4,598
<ALLOWANCES>                                       670
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     0
<PP&E>                                       3,467,799
<DEPRECIATION>                                 177,934
<TOTAL-ASSETS>                               3,452,194
<CURRENT-LIABILITIES>                                0
<BONDS>                                      1,420,931
                                0
                                          0
<COMMON>                                             0
<OTHER-SE>                                   1,925,220
<TOTAL-LIABILITY-AND-EQUITY>                 3,452,194
<SALES>                                              0
<TOTAL-REVENUES>                               493,699
<CGS>                                                0
<TOTAL-COSTS>                                  228,620
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              88,043
<INCOME-PRETAX>                                151,464
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            151,464
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (2,670)
<CHANGES>                                            0
<NET-INCOME>                                   148,794
<EPS-PRIMARY>                                     2.09
<EPS-DILUTED>                                     2.07
        

</TABLE>


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