KILROY REALTY CORP
10-Q, 1998-11-16
REAL ESTATE INVESTMENT TRUSTS
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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
 
                                   FORM 10-Q
 
(MARK ONE)
 
[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
 
               FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 1998
 
                                      OR
 
[_]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
 
                 FOR THE TRANSITION PERIOD FROM       TO
 
                        COMMISSION FILE NUMBER 1-12675
 
                           KILROY REALTY CORPORATION
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 

                  MARYLAND                                    95-4598246
     (STATE OR OTHER JURISDICTION                          (I.R.S. EMPLOYER
     OF INCORPORATION OR ORGANIZATION)                  IDENTIFICATION NUMBER)

 
     2250 EAST IMPERIAL HIGHWAY, SUITE 1200, EL SEGUNDO, CALIFORNIA 90245
                   (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)
 
                                (310) 563-5500
             (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)
 
                                      N/A
  (FORMER NAME, FORMER ADDRESS AND FORMER FISCAL YEAR, IF CHANGED SINCE LAST
                                    REPORT)
 
     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 [_]
 
     As of November 12, 1998, 27,639,210 shares of common stock, par value $.01
per share, were outstanding.
 
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<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           ----
 
                         PART I--FINANCIAL INFORMATION
 
 <C>     <S>                                                               <C>
 Item 1. FINANCIAL STATEMENTS
         Consolidated Balance Sheets of Kilroy Realty Corporation as of
         September 30, 1998 (Unaudited) and December 31, 1997...........     3

         Consolidated Statements of Operations of Kilroy Realty
         Corporation for the nine months ended September 30, 1998 and
         the period February 1, 1997 to September 30, 1997 and the
         Combined Statement of Operations of the Kilroy Group for the
         period January 1, 1997 to January 31, 1997 (Unaudited).........     4

         Consolidated Statements of Operations of Kilroy Realty
         Corporation for the three months ended September 30, 1998 and
         1997 (Unaudited)...............................................     5

         Consolidated Statements of Cash Flows of Kilroy Realty
         Corporation for the nine months ended September 30, 1998 and
         1997 (Unaudited)...............................................     6

         Notes to the Kilroy Realty Corporation Consolidated and Kilroy
         Group Combined Financial Statements (Unaudited)................     7

 Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS..........................................    13
 
                           PART II--OTHER INFORMATION
 
 Item 1. LEGAL PROCEEDINGS..............................................    23

 Item 2. CHANGES IN SECURITIES..........................................    23

 Item 3. DEFAULTS UPON SENIOR SECURITIES................................    23

 Item 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS............    23

 Item 5. OTHER INFORMATION..............................................    23

 Item 6. EXHIBITS AND REPORTS ON FORM 8-K...............................    23

         SIGNATURES.....................................................    25
</TABLE>
 
                                       2
<PAGE>
 
                         PART I--FINANCIAL INFORMATION
 
ITEM 1. FINANCIAL STATEMENTS
 
                     KILROY REALTY CORPORATION CONSOLIDATED
 
                                 BALANCE SHEETS
                       (IN THOUSANDS, EXCEPT SHARE DATA)
 
<TABLE>
<CAPTION>
                                                     SEPTEMBER 30, DECEMBER 31,
                                                         1998          1997
                                                     ------------- ------------
                                                      (UNAUDITED)
<S>                                                  <C>           <C>
                       ASSETS
                       ------
INVESTMENT IN REAL ESTATE (Note 2):
  Land and improvements.............................  $  236,474    $ 177,118
  Buildings and improvements........................     767,677      622,901
  Land and construction in progress.................     128,007       34,671
                                                      ----------    ---------
    Total investment in real estate.................   1,132,158      834,690
  Accumulated depreciation and amortization.........    (139,170)    (121,780)
                                                      ----------    ---------
    Investment in real estate, net..................     992,988      712,910
CASH AND CASH EQUIVALENTS...........................      27,311        8,929
RESTRICTED CASH.....................................       6,296        5,680
TENANT RECEIVABLES, NET.............................      12,802        7,367
NOTES RECEIVABLE FROM RELATED PARTIES (Note 3)......       6,655
ESCROW DEPOSITS.....................................         401        5,114
DEFERRED FINANCING AND LEASING COSTS, NET...........      13,019       13,053
PREPAID EXPENSES AND OTHER ASSETS, NET..............       4,198        4,601
                                                      ----------    ---------
    TOTAL ASSETS....................................  $1,063,670    $ 757,654
                                                      ==========    =========
        LIABILITIES AND STOCKHOLDERS' EQUITY
        ------------------------------------
LIABILITIES:
  Mortgage debt.....................................  $  133,920    $ 131,363
  Line of credit (Note 4)...........................     270,000      142,000
  Accounts payable and accrued expenses.............      14,307        9,711
  Accrued distributions (Note 7)....................      12,811       10,804
  Rents received in advance and tenant security
   deposits.........................................      13,836       11,441
                                                      ----------    ---------
    Total liabilities...............................     444,874      305,319
                                                      ----------    ---------
COMMITMENTS AND CONTINGENCIES (Notes 2 and 3)
MINORITY INTERESTS (Note 5):
  8.075% Series A Cumulative Redeemable Preferred
   unitholders......................................      73,718
  Common unitholders................................      68,680       55,185
                                                      ----------    ---------
    Total minority interests........................     142,398       55,185
                                                      ----------    ---------
STOCKHOLDERS' EQUITY (Note 6):
  Preferred Stock, $.01 par value, 28,300,000 shares
   authorized, none issued and outstanding..........
  8.075% Series A Cumulative Redeemable Preferred
   Stock, $.01 par value, 1,700,000 shares
   authorized, none issued and outstanding..........
  Common Stock, $.01 par value, 150,000,000 shares
   authorized, 27,639,210 and 24,475,000 shares
   issued and outstanding, respectively.............         276          245
  Additional paid-in capital........................     486,956      403,163
  Distributions in excess of earnings...............     (10,834)      (6,258)
                                                      ----------    ---------
    Total stockholders' equity......................     476,398      397,150
                                                      ----------    ---------
    TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY......  $1,063,670    $ 757,654
                                                      ==========    =========
</TABLE>
 
   See accompanying notes to consolidated and combined financial statements.
 
                                       3
<PAGE>
 
           KILROY REALTY CORPORATION (THE "COMPANY") CONSOLIDATED AND
               KILROY GROUP (PREDECESSOR TO THE COMPANY) COMBINED
 
                            STATEMENTS OF OPERATIONS
 
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                          KILROY REALTY CORPORATION    KILROY
                                         ---------------------------    GROUP
                                          NINE MONTHS   FEBRUARY 1,  JANUARY 1,
                                             ENDED        1997 TO      1997 TO
                                         SEPTEMBER 30, SEPTEMBER 30, JANUARY 31,
                                             1998          1997         1997
                                         ------------- ------------- -----------
<S>                                      <C>           <C>           <C>
REVENUES:
  Rental income........................   $   84,817    $   35,878   $    2,760
  Tenant reimbursements................       10,041         3,441          275
  Interest income......................        1,191         2,875
  Other income.........................          941           454           18
                                          ----------    ----------   ---------
    Total revenues.....................       96,990        42,648        3,053
                                          ----------    ----------   ---------
EXPENSES:
  Property expenses....................       13,812         5,999          625
  Real estate taxes....................        6,554         1,925          106
  General and administrative...........        5,499         3,652           78
  Ground leases........................          854           670           64
  Interest expense.....................       14,642         6,714        1,895
  Depreciation and amortization........       19,159         8,404          787
                                          ----------    ----------   ---------
    Total expenses.....................       60,520        27,364        3,555
                                          ----------    ----------   ---------
INCOME (LOSS) BEFORE EQUITY IN (LOSS)
 INCOME OF UNCONSOLIDATED SUBSIDIARY,
 MINORITY INTERESTS AND EXTRAORDINARY
 GAIN..................................       36,470        15,284         (502)
EQUITY IN (LOSS) INCOME OF
 UNCONSOLIDATED SUBSIDIARY.............          (24)          187
                                          ----------    ----------   ---------
INCOME (LOSS) BEFORE MINORITY INTERESTS
 AND EXTRAORDINARY GAIN................       36,446        15,471         (502)
                                          ----------    ----------   ---------
MINORITY INTERESTS:
  Distributions to 8.075% Series A
   Cumulative Redeemable Preferred
   unitholders.........................       (3,704)
  Minority interest in earnings........       (4,093)       (2,231)
                                          ----------    ----------   ---------
    Total minority interests...........       (7,797)       (2,231)
                                          ----------    ----------   ---------
INCOME (LOSS) BEFORE EXTRAORDINARY
 GAIN..................................       28,649        13,240         (502)
EXTRAORDINARY GAIN.....................                                   3,204
                                          ----------    ----------   ---------
NET INCOME.............................   $   28,649    $   13,240   $    2,702
                                          ==========    ==========   =========
Net income per common share--basic.....   $     1.07    $     0.82
                                          ==========    ==========
Net income per common share--diluted...   $     1.07    $     0.81
                                          ==========    ==========
Weighted average shares outstanding--
 basic.................................   26,770,445    16,162,243
                                          ==========    ==========
Weighted average shares outstanding--
 diluted...............................   26,865,274    16,246,435
                                          ==========    ==========
</TABLE>
 
   See accompanying notes to consolidated and combined financial statements.
 
                                       4
<PAGE>
 
                     KILROY REALTY CORPORATION CONSOLIDATED
 
                            STATEMENTS OF OPERATIONS
 
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                         THREE MONTHS ENDED
                                                            SEPTEMBER 30,
                                                        ----------------------
                                                           1998        1997
                                                        ----------  ----------
<S>                                                     <C>         <C>
REVENUES:
  Rental income........................................ $   30,369  $   16,418
  Tenant reimbursements................................      3,768       1,631
  Interest income......................................        308         900
  Other income.........................................         74         158
                                                        ----------  ----------
    Total revenues.....................................     34,519      19,107
                                                        ----------  ----------
EXPENSES:
  Property expenses....................................      4,775       2,724
  Real estate taxes....................................      2,800         998
  General and administrative...........................      1,797       1,477
  Ground leases........................................        259         206
  Interest expense.....................................      5,263       2,637
  Depreciation and amortization........................      6,740       3,660
                                                        ----------  ----------
    Total expenses.....................................     21,634      11,702
                                                        ----------  ----------
INCOME BEFORE EQUITY IN INCOME OF UNCONSOLIDATED
 SUBSIDIARY AND MINORITY INTERESTS.....................     12,885       7,405
EQUITY IN INCOME OF UNCONSOLIDATED SUBSIDIARY..........          1          52
                                                        ----------  ----------
INCOME BEFORE MINORITY INTERESTS.......................     12,886       7,457
                                                        ----------  ----------
MINORITY INTERESTS:
  Distributions to 8.075% Series A Cumulative
   Redeemable Preferred unitholders....................     (1,450)
  Minority interest in earnings........................     (1,451)       (977)
                                                        ----------  ----------
    Total minority interests...........................     (2,901)       (977)
                                                        ----------  ----------
NET INCOME............................................. $    9,985  $    6,480
                                                        ==========  ==========
Net income per common share--basic..................... $     0.36  $     0.34
                                                        ==========  ==========
Net income per common share--diluted................... $     0.36  $     0.34
                                                        ==========  ==========
Weighted average shares outstanding--basic............. 27,647,688  18,931,522
                                                        ==========  ==========
Weighted average shares outstanding--diluted........... 27,647,688  19,025,714
                                                        ==========  ==========
</TABLE>
 
   See accompanying notes to consolidated and combined financial statements.
 
                                       5
<PAGE>
 
        KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                            STATEMENTS OF CASH FLOWS
 
                           (UNAUDITED, IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                            NINE MONTHS ENDED
                                                              SEPTEMBER 30,
                                                           --------------------
                                                             1998       1997
                                                           ---------  ---------
<S>                                                        <C>        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
 Net income..............................................  $  28,649  $  15,942
 Adjustments to reconcile net income to net cash provided
  by operating activities:
  Depreciation and amortization..........................     19,159      9,191
  Provision for bad debts................................        652        172
  Restricted stock compensation..........................        405        315
  Extraordinary gain.....................................                (3,204)
  Minority interest in earnings..........................      4,093      2,231
  Accrued distributions to 8.075% Series A Cumulative
   Redeemable Preferred unitholders......................        757
  Other..................................................       (262)      (128)
  Changes in assets and liabilities:
   Tenant receivables....................................     (6,087)      (894)
   Deferred financing and leasing costs, net.............       (401)    (2,481)
   Prepaid expenses and other assets, net................        561     (6,676)
   Accounts payable and accrued expenses.................      4,596      2,180
   Accrued cost of option buy-out and tenant
    improvements.........................................                (1,390)
   Rents received in advance and tenant security
    deposits.............................................      2,395      1,087
                                                           ---------  ---------
     Net cash provided by operating activities...........     54,517     16,345
                                                           ---------  ---------
CASH FLOWS FROM INVESTING ACTIVITIES:
 Expenditures for rental properties......................   (216,168)  (349,212)
 Expenditures for land and construction in progress......    (65,353)
 Disbursements for notes receivable to related parties...     (6,655)
 Net change in escrow deposits...........................      4,713     (1,179)
 Net investment in and advances to unconsolidated
  subsidiary.............................................       (382)      (454)
                                                           ---------  ---------
     Net cash used in investing activities...............   (283,845)  (350,845)
                                                           ---------  ---------
CASH FLOWS FROM FINANCING ACTIVITIES:
 Net proceeds from issuances of common stock.............     82,146    543,764
 Net proceeds from issuance of 8.075% Series A Cumulative
  Redeemable Preferred Units.............................     72,961
 Net borrowings on line of credit........................    128,000
 Proceeds from issuance of mortgage debt.................      5,000     98,000
 Principal payments on mortgage debt.....................     (2,443)  (219,406)
 Finance costs...........................................     (1,335)    (3,989)
 Restricted cash.........................................       (616)    (4,634)
 Distributions paid......................................    (36,003)   (11,125)
 Deemed and actual contributions from partners, net......                 6,780
                                                           ---------  ---------
     Net cash provided by financing activities...........    247,710    409,390
                                                           ---------  ---------
Net increase in cash and cash equivalents................     18,382     74,890
Cash and cash equivalents, beginning of period...........      8,929
                                                           ---------  ---------
Cash and cash equivalents, end of period ................  $  27,311  $  74,890
                                                           =========  =========
SUPPLEMENTAL CASH FLOW INFORMATION:
  Cash paid for interest.................................  $  19,281  $  10,980
                                                           =========  =========
  Distributions paid to 8.075% Series A Cumulative
   Redeemable Preferred unitholders......................  $   2,947
                                                           =========
NON-CASH TRANSACTIONS:
  Accrual of distributions payable (Note 7)..............  $  12,811  $  10,576
                                                           =========  =========
  Issuance of common units of the Operating Partnership
   to acquire properties (Note 2)........................  $  16,031  $   3,979
                                                           =========  =========
  Issuance of note payable to acquire properties.........             $   6,650
                                                                      =========
</TABLE>
 
   See accompanying notes to consolidated and combined financial statements.
 
                                       6
<PAGE>
 
       KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                         NOTES TO FINANCIAL STATEMENTS
 
                 NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997
                                  (UNAUDITED)
 
1. ORGANIZATION
 
  Kilroy Realty Corporation (the "Company") develops, owns, and operates
office and industrial real estate, primarily in Southern California. The
Company commenced operations in January 1997 and operates as a self-
administered real estate investment trust ("REIT"). The Company succeeded to
the real estate business of the Kilroy Group, the Company's predecessor, which
had been engaged in the acquisition, management, financing, construction and
leasing of commercial and industrial properties. The combined financial
statements of the Kilroy Group comprise the operations of the properties
contributed to the Company in connection with its formation, the formation of
Kilroy Realty, L.P. (the "Operating Partnership") and completion of the
Company's initial public offering ("IPO") (collectively the "Formation
Transactions") on January 31, 1997. As of September 30, 1998, the Company's
stabilized portfolio consisted of 77 office buildings and 83 industrial
buildings, which encompassed approximately 5.4 million and 5.7 million
rentable square feet, respectively, and was 94.9% occupied. The Company owns
its interests in all of the properties through the Operating Partnership and
Kilroy Realty Finance Partnership, L.P. and conducts substantially all of its
operations through the Operating Partnership. The Company owned an 87.4%
general interest in the Operating Partnership as of September 30, 1998.
 
  The majority of the Company's properties are located in Southern California.
The ability of the tenants to honor the terms of their respective leases is
dependent upon the economic, regulatory and social factors affecting the
communities and industries in which the tenants operate.
 
BASIS OF PRESENTATION
 
  The accompanying interim financial statements have been prepared by the
Company's management in accordance with generally accepted accounting
principles and in conjunction with the rules and regulations of the Securities
and Exchange Commission ("SEC"). Certain information and footnote disclosures
required for annual financial statements have been condensed or excluded
pursuant to SEC rules and regulations. In the opinion of management, the
interim financial statements presented herein reflect all adjustments of a
normal and recurring nature which are necessary to fairly state the interim
financial statements. The results of operations for the interim period are not
necessarily indicative of the results that may be expected for the year ended
December 31, 1998. These financial statements should be read in conjunction
with the audited financial statements and the notes thereto included in the
Company's Annual Report on Form 10-K for the year ended December 31, 1997.
 
NEW ACCOUNTING PRONOUNCEMENT
 
  In June 1998, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 133 "Accounting for Derivative Instruments
and Hedging Activities" ("SFAS 133"). SFAS 133 is effective for fiscal years
beginning after June 15, 1999 and requires all derivatives to be recorded on
the balance sheet at fair value as either assets or liabilities depending on
the rights or obligations under the contract. SFAS 133 also establishes
"special accounting" for the following three classifications of hedges: fair
value, cash flow and net investment in foreign operations. Management believes
the adoption of SFAS 133 will not have a material impact on the Company's
financial position or results of operations.
 
                                       7
<PAGE>
 
       KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                  NOTES TO FINANCIAL STATEMENTS--(CONTINUED)
 
                 NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997
                                  (UNAUDITED)
 
 
2. PROPERTY ACQUISITIONS
 
  During the nine months ended September 30, 1998, the Company acquired
through a series of transactions 51 acres of undeveloped land, 23 office
buildings and 15 industrial buildings in California and Nevada, as follows:
 
<TABLE>
<CAPTION>
                           DATE   NUMBER OF  ACREAGE/SQUARE     LOCATION OF    PURCHASE PRICE
      DESCRIPTION        ACQUIRED BUILDINGS      FOOTAGE          PROPERTY     (IN MILLIONS)
      -----------        -------- --------- ----------------- ---------------- --------------
<S>                      <C>      <C>       <C>               <C>              <C>
Undeveloped land........   3/98                       2 acres San Diego, CA        $  1.7
Undeveloped land........   4/98                      13 acres San Diego, CA           9.5
Undeveloped land........   4/98                       4 acres San Diego, CA           1.8
Undeveloped land........   4/98                      18 acres Calabasas, CA           2.9
Undeveloped land........   5/98                       4 acres San Diego, CA           2.6
Undeveloped land........   7/98                       2 acres San Diego, CA            .5
Undeveloped land........   7/98                       8 acres San Diego, CA           5.4
                                            -----------------                      ------
  Subtotal undeveloped
   land.................                             51 acres                        24.4
Office building.........   1/98        1       48,000 sq. ft. Los Angeles, CA         7.6
Office buildings........   1/98        4      149,000 sq. ft. Fullerton, CA          10.6
Office building.........   1/98        1       70,000 sq. ft. Santa Monica, CA       16.6
Office buildings........   2/98        2       79,000 sq. ft. Anaheim, CA             7.1
Office building.........   3/98        1       82,000 sq. ft. Carlsbad, CA           10.5
Office buildings........   3/98        2      200,000 sq. ft. San Diego, CA          29.5
Office building.........   3/98        1       41,000 sq. ft. Camarillo, CA           5.0
Office building.........   4/98        1       69,000 sq. ft. San Diego, CA           7.3
Office buildings........   4/98        7      411,000 sq. ft. San Diego, CA          54.5
Office building.........   6/98        1       46,000 sq. ft. San Diego, CA           6.2
Office building.........   6/98        1       39,000 sq. ft. San Diego, CA           5.2
Office building.........   6/98        1       45,000 sq. ft. San Diego, CA           3.9
Industrial buildings....   1/98        9      143,000 sq. ft. Irvine, CA             12.6
Industrial buildings....   1/98        3      234,000 sq. ft. San Jose, CA           27.9
Industrial building.....   2/98        1       75,000 sq. ft. Reno, NV                6.9
Industrial building.....   4/98        1       84,000 sq. ft. Anaheim, CA             6.2
Industrial building.....   5/98        1       52,000 sq. ft. Tustin, CA              3.5
                                     ---    -----------------                      ------
  Subtotal office and
   industrial buildings.              38    1,867,000 sq. ft.                       221.1
                                                                                   ------
   Total......................................................................     $245.5
                                                                                   ======
</TABLE>
 
  These acquisitions were funded primarily with existing working capital and
borrowings on the Company's revolving credit facility. The Operating
Partnership issued 496,220 common limited partnership units valued at
approximately $13.5 million in connection with the acquisition of two office
buildings located in San Diego, California and one industrial building located
in Reno, Nevada from entities controlled by Richard S. Allen, (together, "The
Allen Group") a member of the Company's board of directors. An Executive Vice
President of the Company who was previously a member of The Allen Group
received 158,495 of the total 496,220 units. The 496,220 units were valued
based upon the Company's average closing common share price for the three-week
period preceding the acquisition date. The acquisitions of the three buildings
were based upon arms length negotiations.
 
  In April 1998, 18 acres of undeveloped land in Calabasas, California were
acquired from a partnership controlled by John B. Kilroy, Sr. and John B.
Kilroy, Jr., the Company's Chairman and its President and Chief Executive
Officer, respectively, in exchange for $346,000 in cash and the issuance of
90,787 common limited partnership units of the Operating Partnership valued at
$2.5 million. These units were valued based upon the Company's average closing
common share price for the ten trading days preceding the acquisition date.
The acquisition was based upon arms length negotiations. The land is part of a
66 acre development site in Calabasas, California which is presently entitled
for over one million rentable square feet of office, retail and hotel
 
                                       8
<PAGE>
 
       KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                  NOTES TO FINANCIAL STATEMENTS--(CONTINUED)
 
                 NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997
                                  (UNAUDITED)
 
development. The Company presently plans to develop 210,000 rentable square
feet of office property on the 18 acres it acquired. The infrastructure
improvements on the land were financed with Mello Roos bonds which have a
current principal balance of approximately $15.4 million. Principal and
interest on the bonds will be charged to the Company and other owners through
property tax bills through 2008 based on the relative value of land and
buildings on the site. Based on the planned development of the total site, the
Company's obligation for its portion of the development site is estimated at
$8.2 million but may vary depending on the actual size and number of buildings
built. The costs are currently capitalized as development costs and will be
charged to operations upon the completion of construction.
 
3. NOTES RECEIVABLE FROM RELATED PARTIES
 
  On May 7, 1998 the Company entered into an agreement to loan up to $8.5
million to a limited partnership controlled by Richard S. Allen, a member of
the Company's board of directors. Advances on the note will be used for
infrastructure improvements on land in San Diego which secures the note.
Pursuant to a separate agreement with the borrower, the Company will acquire a
50% interest in the land upon the completion of all infrastructure
improvements. Interest accrues on all outstanding borrowings at a rate of
LIBOR plus 1.85% (7.23% at September 30, 1998) and the note and accrued
interest are due upon the acquisition of the 50% interest in the land by the
Company. At September 30, 1998, $4.4 million was outstanding on the note.
 
  On May 22, 1998 the Company entered into an agreement to loan up to $2.3
million to a limited liability company also controlled by Richard S. Allen.
Advances on the note will be used for tenant improvements and upgrades to a
building in San Diego. The note is secured by the pledge of membership
interests in limited liability company. Pursuant to a separate agreement with
the borrower, the Company will acquire the building on or before June 30,
1999, subject to the completion of improvements. The note and accrued interest
are payable upon the acquisition of the building by the Company. Interest
accrues on all outstanding borrowings at a rate of prime plus 1.00% (9.25% at
September 30, 1998). At September 30, 1998, $2.3 million was outstanding on
the note.
 
4. LINE OF CREDIT
 
  On February 24, 1998, the Operating Partnership converted its previous $250
million secured revolving credit facility into a $350 million unsecured line
of credit (together with the previous line of credit, the "Credit Facility").
The new Credit Facility matures in February 2000, and bears interest at either
LIBOR plus 1.00%, LIBOR plus 1.13%, or LIBOR plus 1.25%, (6.63% at September
30, 1998) depending on the Company's leverage ratio at the time of borrowing.
 
  Borrowings outstanding at September 30, 1998 were $270 million. Availability
under the Credit Facility at September 30, 1998 was $76.1 million based on the
value of the Company's pool of unencumbered assets. The fee for unused funds
is 0.25% based on outstanding balances. The total interest expense capitalized
for the three-and nine-month periods ended September 30, 1998 were $2.2
million and $6.2 million, respectively.
 
  In July 1998, the Company entered into two interest rate cap agreements with
a total notional amount of $150 million to effectively limit interest expense
for borrowings on the Credit Facility during periods of increasing interest
rates. The agreements have LIBOR based cap rates of 6.50% and expire in July
2000. The Company's exposure is limited to the $176,000 cost of the cap
agreements, which the Company is amortizing over the term of the Credit
Facility. The amortization of the cost of the cap agreements is included as a
component of interest expense in the consolidated statement of operations.
 
                                       9
<PAGE>
 
       KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                  NOTES TO FINANCIAL STATEMENTS--(CONTINUED)
 
                 NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997
                                  (UNAUDITED)
 
 
5. MINORITY INTERESTS
 
  On February 6, 1998, the Company issued 1,200,000 8.075% Series A Cumulative
Redeemable Preferred Units, representing limited partnership interest in the
Operating Partnership (the "Preferred Units"), with a liquidation value of
$50.00 per unit, in exchange for a gross contribution to the Operating
Partnership of $60.0 million. The Company used the contribution proceeds, less
applicable transactions costs and expenses of $1.6 million, for the repayment
of borrowings outstanding on the Credit Facility. On April 22, 1998 the
Company issued an additional 300,000 Preferred Units for a gross contribution
to the Operating Partnership of $15.0 million. The Company used the
contribution proceeds, less applicable transaction costs and expenses of
$412,000, for the repayment of borrowings outstanding on the Credit Facility.
The Preferred Units, which may be called by the Operating Partnership at par
on or after February 6, 2003, have no stated maturity or mandatory redemption
and are not convertible into any other securities of the Operating
Partnership. The Preferred Units are exchangeable at the option of the
majority of the holders for shares of the Company's 8.075% Series A Cumulative
Preferred Stock beginning February 6, 2008 which may be accelerated under
certain circumstances.
 
6. STOCKHOLDERS EQUITY
 
  In January 1998, the Company filed a "shelf" registration statement on Form
S-3 with the Securities and Exchange Commission ("SEC") which registered $400
million of equity securities of the Company. The registration statement was
declared effective by the SEC on February 11, 1998. Through November 12, 1998
the Company completed four underwritten offerings aggregating 3,012,326 shares
of common stock and two direct placements aggregating 161,884 shares of common
stock resulting in aggregate net proceeds of $82.1 million. The Company used
such net proceeds to repay borrowings under the Credit Facility.
 
  In October 1998, the Company adopted a Preferred Share Purchase Rights Plan
(the "Rights Plan") under which stockholders of record on October 15, 1998
received one Right for each share of the Company's outstanding common stock.
Each Right, which entitles its holder to buy one one-hundredth of a share of
voting preferred stock at an exercise price of $71.00, becomes exercisable,
subject to limited exceptions, if a person or group acquires 15% or more of
the Company's common stock or announces a tender offer for 15% or more of the
Company's common stock. Upon such event, each Right entitles its holder to
purchase, at the Right's then exercise price, a number of shares of the
Company's common stock equal to the market value at that time of twice the
Right's exercise price. Rights held by the acquirer will become void and will
not be exercisable upon the announcement of the acquisition. In the event that
the Company is acquired in a merger or other business combination, each Right
entitles its holder to purchase, at the Right's then current exercise price, a
number of shares of the acquiring company's common stock equal to the market
value at that time of twice the Right's exercise price. The Rights Plan
expires October 2, 2008. The Board may elect to redeem the Rights at $.001 per
Right.
 
  As a result of the capital transactions discussed above and the issuance of
587,007 common limited partnership units of the Operating Partnership in
connection with the acquisition of certain properties during 1998 (Note 2),
the Company owned an 87.4% general partnership interest in the Operating
Partnership as of September 30, 1998.
 
                                      10
<PAGE>
 
       KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                  NOTES TO FINANCIAL STATEMENTS--(CONTINUED)
 
                 NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997
                                  (UNAUDITED)
 
 
7. SUBSEQUENT EVENTS
 
  Subsequent to September 30, 1998, the Company acquired two office buildings
located in San Diego, California totaling approximately 116,000 rentable
square feet from an entity controlled by Richard S. Allen, a member of the
Company's board of directors. The acquisition of the two properties was
financed with approximately $16.7 million of borrowings on the Credit Facility
and the issuance of 207,649 common limited partnership units of the Operating
Partnership valued at approximately $5.0 million based on a unit price
predetermined by the parties involved. An Executive Vice President of the
Company who was previously a member of The Allen Group received 144,821 of the
total 207,649 units. The 207,649 units were recorded by the Company at
approximately $4.6 million based on the Company's closing share price on the
acquisition date. The acquisition of the two properties was based upon arms
length negotiations. The $16.7 million of borrowings on the Credit Facility
were drawn prior to the acquisition and are included in outstanding borrowings
at September 30, 1998.
 
  In October 1998, the Credit Facility was amended to include construction in
progress in the value of the Company's unencumbered assets and to modify
certain financial covenants. The agreement was also amended such that the
Credit Facility may bear interest at LIBOR plus 1.38%, depending on the
Company's leverage ratio at the time of borrowing.
 
  On October 12, 1998 distributions of $12.8 million were paid to stockholders
and common unitholders of record on September 30, 1998.
 
8. EARNINGS PER SHARE
 
  Basic earnings per share is computed by dividing net income by the weighted-
average number of common shares outstanding for the period. Diluted earnings
per share is computed by dividing net income by the sum of the weighted-
average number of common shares outstanding for the period plus the assumed
exercise of all dilutive securities. The following table reconciles the
numerator and denominator of the basic and diluted per-share computations for
net income.
 
<TABLE>
<CAPTION>
                                  NINE MONTHS ENDED            PERIOD FEBRUARY 1, 1997 THROUGH
                                 SEPTEMBER 30, 1998                  SEPTEMBER 30, 1997
                         ----------------------------------- -----------------------------------
                           INCOME       SHARES     PER SHARE   INCOME       SHARES     PER SHARE
                         (NUMERATOR) (DENOMINATOR)  AMOUNT   (NUMERATOR) (DENOMINATOR)  AMOUNT
                         ----------- ------------- --------- ----------- ------------- ---------
                                     (IN THOUSANDS EXCEPT SHARE AND PER SHARE DATA)
<S>                      <C>         <C>           <C>       <C>         <C>           <C>
Basic...................   $28,649    26,770,445     $1.07     $13,240    16,162,243     $0.82
Effect of dilutive
 securities:
  Stock options.........                  94,829                              84,192      (.01)
                           -------    ----------     -----     -------    ----------     -----
Diluted.................   $28,649    26,865,274     $1.07     $13,240    16,246,435     $0.81
                           =======    ==========     =====     =======    ==========     =====
<CAPTION>
                                 THREE MONTHS ENDED                  THREE MONTHS ENDED
                                 SEPTEMBER 30, 1998                  SEPTEMBER 30, 1997
                         ----------------------------------- -----------------------------------
                           INCOME       SHARES     PER SHARE   INCOME       SHARES     PER SHARE
                         (NUMERATOR) (DENOMINATOR)  AMOUNT   (NUMERATOR) (DENOMINATOR)  AMOUNT
                         ----------- ------------- --------- ----------- ------------- ---------
                                     (IN THOUSANDS EXCEPT SHARE AND PER SHARE DATA)
<S>                      <C>         <C>           <C>       <C>         <C>           <C>
Basic...................   $ 9,985    27,647,688     $0.36     $ 6,480    18,931,522     $0.34
Effect of dilutive
 securities:
  Stock options.........                                                      94,192
                           -------    ----------     -----     -------    ----------     -----
Diluted.................   $ 9,985    27,647,668     $0.36     $ 6,480    19,025,714     $0.34
                           =======    ==========     =====     =======    ==========     =====
</TABLE>
 
                                      11
<PAGE>
 
       KILROY REALTY CORPORATION CONSOLIDATED AND KILROY GROUP COMBINED
 
                  NOTES TO FINANCIAL STATEMENTS--(CONTINUED)
 
                 NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997
                                  (UNAUDITED)
 
 
  At September 30, 1998, Company employees and directors held options to
purchase 1,493,000 shares of the Company's common stock that were antidilutive
to the diluted earnings per share computation. These options could become
dilutive in future periods if the average market price of the Company's common
stock exceeds the exercise price of the outstanding options.
 
9. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL INFORMATION
 
  The accompanying unaudited pro forma information for the nine months ended
September 30, 1998 and 1997 are presented as if the acquisitions described in
Note 2 to the financial statements had occurred on January 1, 1997. Such pro
forma information is based upon the consolidated statements of operations of
the Company for the nine months ended September 30, 1998 and the period from
February 1, 1997 to September 30, 1997 and the combined statement of
operations of the Kilroy Group for the period January 1, 1997 to January 31,
1997, and should be read in conjunction with the consolidated and combined
financial statements and the notes thereto.
 
  This unaudited pro forma condensed consolidated information does not purport
to represent what the actual results of operations of the Company would have
been assuming such property acquisitions had been completed as set forth
above, nor do they purport to predict the results of operations for future
periods.
 
                          PRO FORMA INCOME STATEMENT
                (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                      NINE MONTHS   NINE MONTHS
                                                         ENDED         ENDED
                                                     SEPTEMBER 30, SEPTEMBER 30,
                                                         1998          1997
                                                     ------------- -------------
<S>                                                  <C>           <C>
Total revenues......................................  $  100,292    $   58,678
                                                      ==========    ==========
Net income before extraordinary items...............  $   28,634    $   11,883
                                                      ==========    ==========
Net income..........................................  $   28,634    $   15,087
                                                      ==========    ==========
Net income per common share-basic...................  $     1.07    $      .93
                                                      ==========    ==========
Net income per common share-diluted.................  $     1.07    $      .93
                                                      ==========    ==========
Weighted average shares outstanding-basic...........  26,770,445    16,162,243
                                                      ==========    ==========
Weighted average shares outstanding-diluted.........  26,865,274    16,246,435
                                                      ==========    ==========
</TABLE>
 
                                      12
<PAGE>
 
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
        RESULTS OF OPERATIONS
 
  The following discussion relates to the consolidated financial statements of
the Company, and the combined financial statements of the Company's
predecessor, the Kilroy Group, and should be read in conjunction with the
financial statements and notes thereto appearing elsewhere in this report.
 
OVERVIEW AND BACKGROUND
 
  Kilroy Realty Corporation (the "Company") develops, owns, and operates
office and industrial real estate, primarily in Southern California. The
Company commenced operations in January 1997 and operates as a self-
administered real estate investment trust ("REIT"). The Company succeeded to
the real estate business of the Kilroy Group, the Company's predecessor, which
had been engaged in the acquisition, management, financing, construction and
leasing of commercial and industrial properties. The combined financial
statements of the Kilroy Group comprise the operations, assets and liabilities
of the properties contributed to the Company in connection with its formation,
the formation of Kilroy Realty, L.P. (the "Operating Partnership") and
completion of the Company's initial public offering ("IPO") (collectively the
"Formation Transactions") on January 31, 1997. The Company owns its interests
in all of the properties through the Operating Partnership and Kilroy Realty
Finance Partnership, L.P. and conducts substantially all of its operations
through the Operating Partnership. The Company owned an 87.4% general
partnership interest in the Operating Partnership as of September 30, 1998.
 
RESULTS OF OPERATIONS
 
  During 1997, the Company acquired 96 office and industrial buildings
totaling 2.2 million and 3.7 million rentable square feet, respectively, for
an aggregate acquisition cost of $507 million. During the nine months ended
September 30, 1998, the Company acquired 38 office and industrial buildings
totaling 1.3 million and 588,000 rentable square feet, respectively, for a
total purchase price of $221 million. Operating results for acquired
properties are included in the consolidated financial statements of the
Company subsequent to their respective acquisition dates.
 
  As a result of the properties acquired subsequent to September 30, 1997,
rentable square footage in the Company's portfolio of stabilized properties
increased 4.2 million rentable square feet, or 60.9% to 11.1 million rentable
square feet at September 30, 1998 compared to 6.9 million rentable square feet
at September 30, 1997. As of September 30, 1998, the Company's portfolio of
stabilized properties was comprised of 77 office properties encompassing 5.4
million rentable square feet and 83 industrial properties encompassing 5.7
million rentable square feet. The portfolio occupancy rate at September 30,
1998 was 94.9%, with the office and industrial properties 94.8% and 95.0%
occupied, respectively, as of such date.
 
                                      13
<PAGE>
 
THREE MONTHS ENDED SEPTEMBER 30, 1998 COMPARED TO THREE MONTHS ENDED SEPTEMBER
30, 1997
 
<TABLE>
<CAPTION>
                                                                  THREE MONTHS
                                                                      ENDED
                                                                  SEPTEMBER 30,
                                                                 ---------------
                                                                 (IN THOUSANDS)
                                                                  1998    1997
                                                                 ------- -------
<S>                                                              <C>     <C>
REVENUES:
  Rental income................................................  $30,369 $16,418
  Tenant reimbursements........................................    3,768   1,631
  Interest income..............................................      308     900
  Other income.................................................       74     158
                                                                 ------- -------
    Total revenues.............................................   34,519  19,107
                                                                 ------- -------
EXPENSES:
  Property expenses............................................    4,775   2,724
  Real estate taxes............................................    2,800     998
  General and administrative...................................    1,797   1,477
  Ground leases................................................      259     206
  Interest expense.............................................    5,263   2,637
  Depreciation and amortization................................    6,740   3,660
                                                                 ------- -------
    Total expenses.............................................   21,634  11,702
                                                                 ------- -------
INCOME BEFORE EQUITY IN INCOME OF UNCONSOLIDATED SUBSIDIARY AND
 MINORITY INTERESTS............................................  $12,885 $ 7,405
                                                                 ======= =======
</TABLE>
 
  Total revenues increased $15.4 million, or 80.7% to $34.5 million for the
three months ended September 30, 1998 compared to $19.1 million for the three
months ended September 30, 1997. Rental income increased $14.0 million, or
85.0% to $30.4 million for the three months ended September 30, 1998 compared
to $16.4 million for the three months ended September 30, 1997. Of this
increase, $7.4 million was generated by properties acquired during 1997,
subsequent to June 30, 1997 (the "Third and Fourth Quarter 1997
Acquisitions"), and $5.5 million was generated from properties acquired during
the nine months ended September 30, 1998 (the "1998 Acquisitions"). The
remaining $1.1 million increase in rental income was generated by properties
owned at July 1, 1997 and still owned at September 30, 1998 (the "Same Store
Properties") and represents a 7.5% increase in rental income for the Same
Store Properties. The increase is primarily the result of leasing activity at
the SeaTac Office Center, including a lease for 211,000 rentable square feet
with The Boeing Company, which was effective January 1, 1998 (the "Boeing
Lease"). In addition, during the second quarter of 1998, the Company leased
46,000 rentable square feet at the La Palma Business Center which was vacant
at September 30, 1997. Excluding the Boeing lease, occupancy remained
consistent and average rent per square foot increased 4.4% for the Same Store
Properties for the three months ended September 30, 1998 compared to the three
months ended September 30, 1997.
 
  Tenant reimbursements increased $2.1 million, or 131.0% to $3.7 million for
the three months ended September 30, 1998 compared to $1.6 million for the
three months ended September 30, 1997. Of this increase $1.6 million was due
to tenant reimbursements from the Third and Fourth Quarter 1997 Acquisitions
and the 1998 Acquisitions. The remaining increase of $0.5 million was
generated by the Same Store Properties, of which $0.3 million represents
tenant reimbursements under the Boeing Lease. Interest income decreased $0.6
million or 65.8% to $0.3 million for the three months ended September 30,
1998, compared to $0.9 million for the three months ended September 30, 1997,
due to interest earned on the proceeds from the sale of 10,000,000 shares of
common stock at $25.50 per share in August 1997 (the "August 1997 Offering").
After the repayment of borrowings on the line of credit and the purchase of
pending acquisitions, there were $146 million of proceeds remaining from the
August 1997 Offering.
 
  Total expenses increased $9.9 million, or 84.9% to $21.6 million for the
three months ended September 30, 1998 compared to $11.7 million for the three
months ended September 30, 1997. Property expenses increased $2.1 million, or
75.3% to $4.8 million and real estate taxes increased $1.8 million, or 180.6%
to $2.8 million for
 
                                      14
<PAGE>
 
the three months ended September 30, 1998 compared to $2.7 million and $1.0
million, respectively for the three months ended September 30, 1997. Of the
collective increase of $3.9 million in property expenses and real estate
taxes, $2.0 million was generated by the Third and Fourth Quarter 1997
Acquisitions and $1.2 million was generated from the 1998 Acquisitions. The
remaining $0.7 million increase was generated from the Same Store Properties
and is primarily due to management more aggressively allocating expenses which
may be reimbursable by tenants to the property level, and also reflects the
annual increase in property taxes. General and administrative expenses
increased $0.3 million, or 21.7% to $1.8 million for the three months ended
September 30, 1998 compared to $1.5 million for the three months ended
September 30, 1997, due to increased management and administrative costs
associated with the increased portfolio size. Interest expense increased $2.6
million, or 99.6% to $5.2 million for the three months ended September 30,
1998 compared to $2.6 million for the three months ended September 30, 1997,
primarily due to interest paid on an additional $128 million of borrowings on
the Company's unsecured revolving credit facility during 1998 and $32.9
million of mortgage debt assumed in connection with fourth quarter 1997
acquisitions. The Company's weighted average interest rate decreased 0.88% to
7.31% at September 30, 1998 compared to 8.19% at September 30, 1997.
Depreciation and amortization expense increased $3.1 million, or 84.2% to $6.7
million for the three months ended September 30, 1998 compared to $3.6 million
for the same period in 1997, primarily due to depreciation on the 1997 and
1998 Acquisitions.
 
  Net income before extraordinary gains increased $5.5 million, or 74.0% to
$12.9 million for the three months ended September 30, 1998 compared to $7.4
million for the three months ended September 30, 1997. The increase is due
primarily to an increase in rental income and tenant reimbursements of $14.0
million and $2.1 million, respectively, offset by an increase in property
expenses of $2.1 million, an increase in real estate taxes of $1.8 million, an
increase in interest expense of $2.6 million and an increase in depreciation
and amortization of $3.1 million.
 
NINE MONTHS ENDED SEPTEMBER 30, 1998 COMPARED TO ADJUSTED NINE MONTHS ENDED
SEPTEMBER 30, 1997
 
  The Company's management believes that in order to provide meaningful
historical analysis of the financial statements, certain adjustments must be
made to the historical Kilroy Group financial statements to make accounting
periods comparable. Accordingly the results of operations for the period
January 1, 1997 to January 31, 1997 have been adjusted to reflect interest
income, general and administrative expenses, interest expense and
extraordinary items as if the IPO had been consummated on January 1, 1997. The
following sections discuss the results of operations as adjusted.
 
<TABLE>
<CAPTION>
                                                            NINE MONTHS ENDED
                                                              SEPTEMBER 30,
                                                          ---------------------
                                                             (IN THOUSANDS)
                                                           1998       1997
                                                          ------- -------------
                                                                  (AS ADJUSTED)
<S>                                                       <C>     <C>
REVENUES:
  Rental income.......................................... $84,817    $38,638
  Tenant reimbursements..................................  10,014      3,716
  Interest income........................................   1,191      3,361
  Other income...........................................     941        472
                                                          -------    -------
    Total revenues.......................................  96,990     46,187
                                                          -------    -------
EXPENSES:
  Property expenses......................................  13,812      6,624
  Real estate taxes......................................   6,554      2,031
  General and administrative.............................   5,499      4,015
  Ground leases..........................................     854        734
  Interest expense.......................................  14,642      7,480
  Depreciation and amortization..........................  19,159      9,191
                                                          -------    -------
    Total expenses.......................................  60,520     30,075
                                                          -------    -------
INCOME BEFORE EQUITY IN INCOME OF SUBSIDIARY, MINORITY
 INTERESTS AND EXTRAORDINARY GAIN........................ $36,470    $16,112
                                                          =======    =======
</TABLE>
 
 
                                      15
<PAGE>
 
  Total revenues increased $50.8 million, or 110.0% to $97.0 million for the
nine months ended September 30, 1998 compared to $46.2 million for the nine
months ended September 30, 1997. Rental income increased $46.2 million, or
119.5% to $84.8 million for the nine months ended September 30, 1998 compared
to $38.6 million for the nine months ended September 30, 1997. Of this
increase, $32.3 million was generated by properties acquired during 1997
subsequent to the IPO on January 31, 1997 (the "1997 Acquisitions") and
$11.7 million was generated from the 1998 Acquisitions. The remaining $2.2
million increase in rental income was generated by properties owned at the IPO
and still owned at September 30, 1998 (the "Existing Properties") and
represents a 6.9% increase in rental income for the Existing Properties. The
increase is primarily the result of leasing activity at the SeaTac Office
Center, including the Boeing Lease which contributed $1.6 million of the
increase in rental revenue. The remainder of the increase is primarily
attributable to owning the seven properties acquired in connection with the
IPO for a full nine months in 1998. Excluding the Boeing Lease, occupancy
remained consistent and average rent per square foot increased 2.6% for the
Existing Properties for the nine months ended September 30, 1998 compared to
the nine months ended September 30, 1997.
 
  Tenant reimbursements increased $6.3 million, or 170.2% to $10.0 million for
the nine months ended September 30, 1998 compared to $3.7 million for the nine
months ended September 30, 1997. Of this increase, $4.5 million was
attributable to tenant reimbursements from the 1997 and 1998 Acquisitions and
$1.8 million was generated by the Existing Properties, of which $1.0 million
represents tenant reimbursements under the Boeing Lease. The remaining $0.8
million of the increase is primarily due to an increase in tenant billings
correlating with an increase in reimbursable property operating expenses.
Interest income decreased $2.2 million or 64.6% to $1.2 million for the nine
months ended September 30, 1998, compared to $3.4 million for the nine months
ended September 30, 1997, due to interest earned on the $116 million of net
IPO proceeds and the $146 million of net proceeds from the August 1997
Offering during the nine months ended September 30, 1997. Other income for the
nine months ended September 30, 1998 included $0.5 million in development
services fees, and also lease termination fees and property management fees.
 
  Total expenses increased $30.4 million, or 101.2% to $60.5 million for the
nine months ended September 30, 1998 compared to $30.1 million for the nine
months ended September 30, 1997. Property expenses increased $7.2 million, or
108.5% to $13.8 million and real estate taxes increased $4.5 million, or
222.7% to $6.5 million for the nine months ended September 30, 1998 compared
to $6.6 million and $2.0 million, respectively for the nine months ended
September 30, 1997. Of the collective increase of $11.7 million in property
expenses and real estate taxes, $7.4 million was generated by the 1997
Acquisitions and $2.8 million was generated by the 1998 Acquisitions. The
remaining $1.5 million increase from the Existing Properties is primarily
attributable to management more aggressively allocating expenses which may be
reimbursable by tenants to the property level and also reflects the annual
increase in property taxes. General and administrative expenses increased $1.5
million, or 37.0% to $5.5 million for the nine months ended September 30, 1998
compared to $4.0 million for the nine months ended September 30, 1997, due to
increased management and administrative costs associated with the increased
portfolio size. Ground lease expense increased $0.1 million or 16.3% during
the nine months ended September 30, 1998 over the same period in 1997
primarily as a result of ground leases on two properties purchased subsequent
to the IPO. Interest expense increased $7.2 million, or 95.8% to $14.7 million
for the nine months ended September 30, 1998 compared to $7.5 million for the
nine months ended September 30, 1997, primarily due to interest paid on an
additional $128 million of borrowings on the Company's unsecured revolving
credit facility during 1998 and $32.9 of mortgage debt assumed in connection
with fourth quarter 1997 acquisitions. The Company's weighted average interest
rate decreased 0.88% to 7.31% at September 30, 1998 compared to 8.19% at
September 30, 1997. Depreciation and amortization expense increased $10.0
million, or 108.5% to $19.2 million for the nine months ended September 30,
1998 compared to $9.2 million for the same period in 1997, due to depreciation
on the 1997 and 1998 Acquisitions.
 
  Net income before extraordinary gains increased $20.4 million, or 126.4% to
$36.5 million for the nine months ended September 30, 1998 compared to $16.1
million for the nine months ended September 30, 1997. The increase is due
primarily to an increase in rental income and tenant reimbursements of $46.2
million and $6.3 million, respectively, offset by an increase in property
expenses of $7.2 million, an increase in real estate taxes of $4.5 million, an
increase in interest expense of $7.2 million and an increase in depreciation
and amortization of $10.0 million.
 
                                      16
<PAGE>
 
LIQUIDITY AND CAPITAL RESOURCES
 
  In February 1998, the Company obtained a $350 million unsecured revolving
credit facility (the "Credit Facility"), which bears interest at a rate of
either LIBOR plus 1.00%, LIBOR plus 1.13% or LIBOR plus 1.25% (6.63% at
September 30, 1998) depending on the Company's leverage ratio at the time of
borrowing, and matures in February 2000. Availability under the Credit
Facility is dependent upon the value of the Company's pool of unencumbered
assets and was $76.1 million at September 30, 1998. In October 1998, the
Credit Facility agreement was amended to include construction in progress in
the value of the Company's unencumbered assets and to modify certain financial
covenants. The agreement was also amended such that the Credit Facility may
bear interest at LIBOR plus 1.38%, depending upon the Company's leverage ratio
at the time of borrowing. There were borrowings of $270 million outstanding at
September 30, 1998.
 
  On January 31, 1998 the Company increased the amount of its $14.0 million
mortgage loan to $19.0 million and extended the maturity date to January 31,
2000. In addition, the Company repaid a $0.9 million promissory note in
January 1998. As of September 30, 1998 the Company's mortgage loans had a
weighted average interest rate of 8.19%.
 
  In January 1998, the Company filed a "shelf" registration statement on Form
S-3 with the SEC which registered $400 million of equity securities of the
Company. The registration statement was declared effective by the SEC on
February 11, 1998. Through November 12, 1998 the Company completed four
underwritten offerings aggregating 3,012,326 shares of common stock and two
direct placements aggregating 161,884 shares of common stock with aggregate
net proceeds of $82.1 million. As of November 12, 1998, an aggregate of
$313 million of equity securities were issuable under the registration
statement. The Company, as general partner of the Operating Partnership and as
required by the terms and conditions of the Third Amended and Restated
Agreement of Limited Partnership of the Operating Partnership (the
"Partnership Agreement"), invested the net proceeds of such offerings in the
Operating Partnership, which used such net proceeds to repay borrowings under
the Credit Facility.
 
  In February 1998, the Company issued 1,200,000 8.075% Series A Cumulative
Redeemable Preferred Units, representing limited partnership interests in the
Operating Partnership (the "Preferred Units"), with a liquidation value of
$50.00 per unit, in exchange for a gross contribution to the Operating
Partnership of $60.0 million. The Company used the contribution proceeds, less
applicable transactions costs and expenses of $1.6 million, for the repayment
of borrowings outstanding on the Credit Facility. On April 22, 1998 the
Company issued an additional 300,000 Preferred Units for a gross contribution
to the Operating Partnership of $15.0 million. The Company used the
contribution proceeds, less applicable transaction costs and expenses of $0.4
million for the repayment of borrowings outstanding on the Credit Facility.
The Preferred Units, which may be called by the Operating Partnership at par
on or after February 6, 2003, have no stated maturity or mandatory redemption
and are not convertible into any other securities of the Operating
Partnership. The Preferred Units are exchangeable at the option of the
majority of the holders, for shares of the Company's 8.075% Series A
Cumulative Redeemable Preferred Stock, beginning February 6, 2008 which may be
accelerated under certain circumstances.
 
CAPITAL EXPENDITURES
 
  As of September 30, 1998, the Company had commenced development of
approximately 1.4 million and 300,000 rentable square feet of industrial and
office space, respectively, at a total budgeted cost of approximately $127
million. The Company has spent an aggregate of $84.0 million on these projects
as of September 30, 1998. The Company intends to finance the remaining $43.0
million of development costs with borrowings under the Credit Facility and
working capital.
 
  At September 30, 1998, the Company had escrow deposits of $401,000 for the
contemplated acquisitions of two office buildings with 132,100 aggregate
rentable square feet. The aggregate acquisition cost of the buildings is
estimated to be approximately $21.5 million.
 
                                      17
<PAGE>
 
  Subsequent to September 30, 1998, the Company completed the acquisition of
two office buildings with 116,000 rentable square feet in the aggregate for a
purchase price of $21.3 million. The properties were acquired from an entity
controlled by Richard S. Allen a member of the Company's board of directors,
with borrowings on the Credit Facility and the issuance of 207,649 common
limited partnership units of the Operating Partnerships recorded at $4.6
million based on the Company's closing share price on the acquisition date. An
Executive Vice President of the Company who was previously a member of The
Allen Group a group of affiliated real estate development and investment
companies based in Visalia, California ("The Allen Group"), received 144,821
of the total 207,649 units. The $16.7 million of borrowings on the Credit
Facility were drawn prior to the acquisition and are included in outstanding
borrowings at September 30, 1998.
 
  In connection with an agreement signed in October 1997 with The Allen Group
the Company is committed to purchase two office properties totaling 254,000
rentable square feet for an aggregate purchase price of $40.1 million. The
Company intends to finance these acquisitions with borrowings on the Credit
Facility and the issuance of approximately $11.0 million of common limited
partnership units of the Operating Partnership. In addition, the original
agreement contemplated the acquisition by the Company of two industrial
buildings in San Rafael, California and Las Vegas, Nevada, respectively, and
one office building in Redwood City, California for an aggregate purchase
price of $22.8 million. Based on the current amended agreement, the Company is
no longer obligated to purchase these three non-strategic properties.
 
  The transaction with The Allen Group also consists of the development of two
office projects in San Diego, California with approximately 750,000 aggregate
rentable square feet for an estimated aggregate development cost of
approximately $100 million. The Company has agreed to purchase a 50% managing
interest in the two projects upon completion of all necessary entitlements and
infrastructure and is expected to manage the development of both projects. The
Company has an option to purchase The Allen Group's remaining interest in both
projects for a purchase price to be determined upon completion of the
projects. The Company presently expects development of the two office projects
to commence during the fourth quarter of 1998.
 
  The Company believes that it will have sufficient capital resources to
satisfy its obligations and planned capital expenditures for the next twelve
months. The Company expects to meet its long-term liquidity requirements
including possible future development and property acquisitions, through
retained cash flow, long-term secured and unsecured borrowings, including the
Credit Facility, and the issuance of debt securities or the issuance of common
limited partnership units of the Operating Partnership.
 
HISTORICAL CASH FLOWS
 
  The Company's net cash provided by operating activities increased $38.2
million or 233.5% to $54.5 million for the nine months ended September 30,
1998 compared to $16.3 million for the nine months ended September 30, 1997.
The increase is primarily due to the increase in net income resulting from the
1997 and 1998 acquisitions and increased property operating income generated
by the properties owned as of January 1, 1997. The increase was partially
offset by increased interest expense and general and administrative expenses.
Cash used in investing activities decreased $67.0 million or 19.1% to $284
million for the nine months ended September 30, 1998 compared to $351 million
for the nine months ended September 30, 1997. The decrease was due primarily
to the purchase of 38 office and industrial properties for $208 million (net
of $13.5 million of contributed value in exchange for which the Company issued
common limited partnership units of the Operating Partnership), the purchase
of 51 acres of undeveloped land for $21.9 million (net of $2.5 million of
contributed value in exchange for which the Company issued common limited
partnership units of the Operating Partnership), expenditures for construction
in progress of $43.4 million, and $8.2 million in additional tenant
improvements and capital expenditures for the nine months ended September 30,
1998 versus the purchase of 65 office and industrial properties for $280
million (net of $4.0 million of contributed value in exchange for which the
Company issued common limited partnership units of the Operating Partnership
and $6.7 million of debt issued), the purchase of 7 office and industrial
buildings for $58.0 million in connection with the IPO, the purchase of 25
acres of undeveloped land for $6.5 million, and $4.8 million in additional
tenant improvements
 
                                      18
<PAGE>
 
and capital expenditures for the nine months ended September 30, 1997. Cash
provided by financing activities decreased $161 million or 39.5% to
$248 million for the nine months ended September 30, 1998 compared to $409
million for the nine months ended September 30, 1997. Cash provided by
financing activities for the nine months ended September 30, 1998 consisted
primarily of net proceeds from the issuance of 3,012,326 shares of common stock
through four underwritten offerings, the issuance of 161,884 shares of common
stock through two direct placements, the issuance of $75.0 million of 8.075%
Series A Cumulative Redeemable Preferred Units of the Operating Partnership and
proceeds from the issuance of mortgage debt and net borrowings on the Credit
Facility, partially offset by distributions paid to stockholders and minority
interest holders. Cash provided by financing activities for the nine months
ended September 30, 1997 consisted of net proceeds from the Company's IPO in
January 1997, proceeds from the issuance of mortgage debt in connection with
the IPO, net borrowings on the line of credit and distributions paid to
stockholders and minority interest holders. The increase in distributions of
$24.9 million or 223.6% to $36.0 million for the nine months ended September
30, 1998 from $11.1 million for the nine months ended September 30, 1997 is due
to a greater number of shares outstanding as well as an increase in
distribution rate to $1.22 per share for the nine months ended September 30,
1998 from 1.03 per share for the nine months ended September 30, 1997.
 
FUNDS FROM OPERATIONS
 
  Industry analysts generally consider Funds from Operations, as defined by
NAREIT, an alternative measure of performance for an equity REIT. Funds from
Operations is defined by NAREIT to mean net income (loss) determined in
accordance with GAAP, excluding gains (or losses) from debt restructuring and
sales of property, plus depreciation and amortization (other than amortization
of deferred financing costs and depreciation of non-real estate assets), and
after adjustment for unconsolidated partnerships and joint ventures. The
Company believes that in order to facilitate a clear understanding of the
combined historical operating results of the Company, Funds from Operations
should be examined in conjunction with net income as presented in the financial
statements included elsewhere in this report. The Company computes Funds from
Operations in accordance with standards established by the Board of Governors
of NAREIT in its March 1995 White Paper, which may differ from the
methodologies used by other equity REITs and, accordingly, may not be
comparable to that published by such other REITs. Funds from Operations should
not be considered as an alternative to net income (loss), as an indication of
the Company's performance or to cash flows as a measure of liquidity or the
ability to pay dividends or make distributions.
 
  The following table presents the Company's Funds from Operations for the nine
months ended September 30, 1998 and the period from February 1, 1997 to
September 30, 1997.
 
<TABLE>
<CAPTION>
                                                      NINE MONTHS   FEBRUARY 1,
                                                         ENDED        1997 TO
                                                     SEPTEMBER 30, SEPTEMBER 30,
                                                         1998          1997
                                                     ------------- -------------
                                                           (IN THOUSANDS)
<S>                                                  <C>           <C>
Net income..........................................    $28,649       $13,240
  Add:
    Minority interest in earnings...................      4,093         2,231
    Depreciation and amortization...................     19,159         8,404
    Other...........................................        405           315
                                                        -------       -------
Funds from Operations...............................    $52,306       $24,190
                                                        =======       =======
</TABLE>
 
                                       19
<PAGE>
 
  The following table presents the Company's Funds Available for Distribution
for the nine months ended September 30, 1998 and the period from February 1,
1997 to September 30, 1997.
 
<TABLE>
<CAPTION>
                                                     NINE MONTHS   FEBRUARY 1,
                                                        ENDED        1997 TO
                                                    SEPTEMBER 30, SEPTEMBER 30,
                                                        1998          1997
                                                    ------------- -------------
                                                          (IN THOUSANDS)
<S>                                                 <C>           <C>
Funds from Operations..............................    $52,306       $24,190
  Adjustments:
    Amortization of deferred financing costs.......        708           625
    Tenant improvements, leasing commissions and
     recurring capital expenditures................     (2,248)         (806)
    Net effect of straight-line rents..............     (2,983)         (289)
                                                       -------       -------
Funds Available for Distribution...................    $47,783       $23,720
                                                       =======       =======
</TABLE>
 
INFLATION
 
  The majority of the Company's tenant leases require tenants to pay most
operating expenses, including real estate taxes and insurance, and increases
in common area maintenance expenses, which reduce the Company's exposure to
increases in costs and operating expenses resulting from inflation.
 
YEAR 2000
 
  The Year 2000 issue ("Y2K") refers to the inability of certain computer
systems, as well as certain hardware and equipment containing date sensitive
data, to recognize accurate dates commencing on or after January 1, 2000. This
has the potential to affect those systems adversely. In 1997 the Company's
Information Technology Committee, which is comprised of representatives from
senior management and various departments including accounting, property
management and information systems, identified three phases in the Company's
Y2K efforts: discovery and assessment, remediation and implementation, and
testing and verification. Although many of the phases are being completed
simultaneously, the following sections describe the activities that the
Company has or expects to perform to meet its Y2K objectives, as well as
management's assessment of the Company's risk of non-compliance.
 
The Company's State of Readiness
 
  The initial phase of discovery and assessment consists of evaluating and
identifying all of the Company's information technology and non-information
technology systems that contain date sensitive data. The following summary
describes the classifications of systems that were identified and the
Company's current state of readiness for each classification.
 
Information Technology Systems
 
  The Company's information systems fall into three general categories:
accounting and property management, network operating systems, and desktop
software.
 
Accounting and Property Management
 
  The Company replaced its accounting and property management system after its
IPO in early 1997. The new accounting and property management system, which
was tested upon its implementation in 1997, is Y2K complaint as asserted by
the software vendor. Management believes there is no material Y2K exposure
with respect to the accounting and property management system.
 
                                      20
<PAGE>
 
Network Operating Systems
 
  The Company acquired all new network hardware and software after it's IPO in
early 1997. All network hardware and software is Y2K compliant as asserted by
the vendors. Management believes there is no material Y2K exposure with
respect to network operating systems.
 
Desktop Systems and Software
 
  The Company updated all of its desktop systems and software after its IPO in
early 1997. The new desktop systems and software packages, which had been
tested after installation in 1997, are all Y2K compliant as asserted by the
systems and software vendors. Management believes there is no material Y2K
exposure with respect to desktop systems and software.
 
Non Information Technology Systems
 
Building Management Systems
 
  The Company has identified five categories of building management systems
that could have potential Y2K exposure: building automation (e.g., HVAC),
security card access, fire and life safety, elevator, and office equipment.
During 1998, property management executives and personnel began gathering data
to identify all of the Company's Y2K sensitive building management systems and
to assess whether such systems are currently Y2K compliant or will need to be
modified or replaced. Management expects to complete the discovery and
assessment phase and be able to determine the Company's state of readiness as
to building management systems by the end of fiscal year 1998.
 
Costs to Address the Company's Y2K Efforts
 
  Since the replacement of the accounting and property management system and
the installation of updated desktop systems and software was performed as a
result of the Company becoming a public traded REIT and not in response to Y2K
compliance issues, and further, since phase 1 of the building management
systems efforts are being performed by Company employees, Y2K costs incurred
to date have been minimal and are not material to the Company's financial
position or results of operations.
 
  While expected future costs, which will include costs to complete phases 2
and 3 for the building management systems, are not readily quantifiable at
this time, it is management's belief that a significant portion of such costs
will be treated as operating expenses and will be reimbursable to the Company
under most tenant leases.
 
Efforts to Identify the Y2K Issues of Significant Third Parties
 
  Due to the Company's diverse tenant base, the success of the Company's
business is not closely tied to the success of any one particular tenant. In
addition, the success of the Company's business is also not closely tied to
the operations of any one vendor, supplier or manufacturer. However, the
Company is in the process of surveying significant tenants, vendors, suppliers
and other relevant third parties, to determine that their systems will be Y2K
compliant and that the Company's normal operations will continue without
interruption. Management anticipates this project will be completed by
December 31, 1998.
 
The Risks of Y2K Non-Compliance
 
  Management does not believe that the impact of the Y2K issue will have a
material adverse effect on the Company's financial condition or results of
operations. This belief is based upon both the analysis of the Company's Y2K
issues and the Company's assessment of the Y2K exposure related to tenants,
vendors, and other significant third parties as discussed above. No assurance
can be given about facts and resultant effects of Y2K issues unknown to the
Company at this time.
 
                                      21
<PAGE>
 
  In the event of the worst case scenario, which would be that the Company's
information or non-information systems fail, Management believes that the
inherent nature of the Company's business, which is to collect rent from high
credit quality tenants under long-term leases, should mitigate against any
disruption of business.
 
  In addition, Management believes that the Y2K risk related to the potential
failure of the building management systems are immaterial due to the fact that
each of the Company's properties have, for the most part, separate building
management systems. Accordingly, a Y2K problem that is experienced at one
building should have no effect on the other buildings. In addition, management
believes that most of the Company's individual tenant leases eliminate, limit,
or quantify the rights of tenants to receive an abatement in the event of a
system failure or an interruption of utilities.
 
Developing Contingency Plans
 
  The Company does not currently have a contingency plan in place in the event
of a Y2K failure. Such a contingency plan is expected to be developed by the
end of the third quarter 1999.
 
                                      22
<PAGE>
 
                          PART II--OTHER INFORMATION
 
ITEM 1. LEGAL PROCEEDINGS
 
  During the nine months ended September 30, 1998, no legal proceedings were
initiated against or on behalf of the Company, the adverse determination of
which would have a material adverse effect upon the financial condition and
results of operations of the Company.
 
ITEM 2. CHANGES IN SECURITIES
 
  Subsequent to September 30, 1998, the Operating Partnership issued 207,649
common limited partnership units issued at an aggregate value of $5.0 million
to an entity controlled by Richard S. Allen, a member of the Company's board
of directors, in exchange for two office buildings totaling approximately
116,000 rentable square feet in San Diego, California. An Executive Vice
President of the Company who was previously a member of The Allen Group
received 144,821 of the total 207,649 units. The 207,649 units were recorded
by the Operating Partnership at approximately $4.6 million based on the
Company's closing share price on acquisition date. These units were issued in
reliance on an exemption registration requirement pursuant to Regulation D
under the Securities Act of 1933 as amended.
 
ITEM 3. DEFAULTS UPON SENIOR SECURITIES--NONE
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS--NONE
 
ITEM 5. OTHER INFORMATION--NONE
 
ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K
 
  (a) Exhibits
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                                DESCRIPTION
 -------                               -----------
 <C>     <S>
  4.1    Rights Agreement, dated as of October 2, 1998 between Kilroy Realty
         Corporation and ChaseMellon Shareholder Services, L.L.C., as Rights
         Agent, which includes the form of Articles Supplementary of the Series
         B Junior Participating Preferred Stock of Kilroy Realty Corporation as
         Exhibit A, the form of Right Certificate as Exhibit B and the Summary
         of Rights to Purchase Preferred Shares as Exhibit C.(1)
 10.1    First Amendment to Third Amended and Restated Agreement of Limited
         Partnership by Kilroy Realty Corporation, as general partner of Kilroy
         Realty, L.P., dated as of October 2, 1998.(1)
 10.2*   Amended and Restated Revolving Credit Agreement, dated as of October
         8, 1998 among Kilroy Realty, L.P., Morgan Guaranty Trust Company of
         New York, as Bank and as Lead Agent for the Banks, and the Banks
         listed therein.
 10.3*   Amended and Restated Guaranty of Payment, dated as of October 8, 1998,
         between Kilroy Realty Corporation and Morgan Guaranty Trust Company of
         New York.
 10.4    Contribution Agreement, dated October 21, 1997 by and between Kilroy
         Realty, L.P. and Kilroy Realty Corporation and The Allen Group and the
         Allens.(2)
 10.5*   Amendment to the Contribution Agreement, dated October 14, 1998, by
         and between Kilroy Realty, L.P. and Kilroy Realty Corporation and The
         Allen Group and the Allens, dated October 21, 1997.
 27.1*   Financial Data Schedule.
 99.1    Press Release of Kilroy Realty Corporation, dated October 2, 1998.(1)
</TABLE>
- --------
 * Filed herewith.
 
                                      23
<PAGE>
 
(1) Previously filed as Exhibits 4.1, 10.1, and 99.1, respectively, to the
    Current Report on Form 8-K (No. 1-12675) dated October 2, 1998 and
    incorporated herein by reference.
 
(2) Previously filed as Exhibit 2.1 to the Current Report on Form 8-K (No. 1-
    12675) dated October 29, 1997 and incorporated herein by reference.
 
  (b) Reports on Form 8-K.
 
  The Company filed a Current Report on Form 8-K, dated October 2, 1998, in
connection with the adoption of the Preferred Share Purchase Rights Plan.
 
                                      24
<PAGE>
 
                                  SIGNATURES
 
  Pursuant to the requirements of Section 13 or 15(d) 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 on November 16,
1998.
 
                                          Kilroy Realty Corporation
 
                                          By: /s/  John B. Kilroy, Jr.
                                          -------------------------------------
                                                   John B. Kilroy, Jr.
                                              President and Chief Executive
                                                         Officer
 
                                          By: /s/ Richard E. Moran Jr.
                                          -------------------------------------
                                                  Richard E. Moran Jr.
                                           Executive Vice President and Chief
                                                    Financial Officer
 
                                          By: /s/   Ann Marie Whitney
                                          -------------------------------------
                                                    Ann Marie Whitney
                                              Vice President and Controller
 
                                      25

<PAGE>

                                                                    EXHIBIT 10.2
================================================================================

                AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT


                          dated as of October 9, 1998


                                     among


                              KILROY REALTY, L.P.


                   MORGAN GUARANTY TRUST COMPANY OF NEW YORK,
                    as Bank and as Lead Agent for the Banks,

                   BANK OF MONTREAL, as Bank and as Co-Agent,

  COMMERZBANK AKTIENGESELLSCHAFT, LOS ANGELES BRANCH, as Bank and as Co-Agent,

 DRESDNER BANK AG, NEW YORK BRANCH and GRAND CAYMAN BRANCH, as Bank and
                                  as Co-Agent

            PNC BANK, NATIONAL ASSOCIATION, as Bank and as Co-Agent,

               UNION BANK OF CALIFORNIA, as Bank and as Co-Agent

                                      and

                            THE BANKS LISTED HEREIN

================================================================================
<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------

                                                                    Page
                                                                    ----

                                   ARTICLE I
                                  DEFINITIONS
                                  -----------
<TABLE>
<CAPTION>

<S>                                                                  <C>
Section  1.1.  Definitions.........................................    2
Section  1.2.  Accounting Terms and Determinations.................   30
Section  1.3.  Types of Borrowings.................................   31
</TABLE>
                                   ARTICLE II                    
                                   THE CREDITS                   
                                   -----------                   
<TABLE>
<CAPTION>

<S>                                                                  <C>
Section 2.1.   Commitments to Lend..................................  31
Section 2.2.   Notice of Committed Borrowing........................  32
Section 2.3.   Money Market Borrowings..............................  34
Section 2.4.   Notice to Banks; Funding of Loans....................  40
Section 2.5.   Notes................................................  41
Section 2.6.   Maturity of Loans....................................  42
Section 2.7.   Interest Rates.......................................  42
Section 2.8.   Fees.................................................  44
Section 2.9.   Mandatory Termination................................  47
Section 2.10.  Mandatory Prepayment.................................  47
Section 2.11.  Optional Prepayments.................................  49
Section 2.12.  General Provisions as to Payments....................  50
Section 2.13.  Funding Losses.......................................  52
Section 2.14.  Computation of Interest and Fees.....................  52
Section 2.15.  Method of Electing Interest Rates....................  52
Section 2.16.  Letters of Credit....................................  54
Section 2.17.  Letter of Credit Usage Absolute......................  58
</TABLE>

                                  ARTICLE III
                                  CONDITIONS
                                  ----------
<TABLE>
<CAPTION>

<S>                                                                  <C>
Section 3.1.  Closing...............................................  59
Section 3.2.  Borrowings............................................  62
Section 3.3.  New Acquisitions and Additional Real
                     Property Assets................................  63
</TABLE>

                                   ARTICLE IV
                          REPRESENTATIONS AND WARRANTIES
                          ------------------------------
<TABLE>
<CAPTION>

<S>                                                                  <C>
Section 4.1.  Existence and Power...................................  64
Section 4.2.  Power and Authority...................................  65
Section 4.3.  No Violation..........................................  65
Section 4.4.  Financial Information.................................  66
Section 4.5.  Litigation............................................  66
Section 4.6.  Compliance with ERISA.................................  66
Section 4.7.  Environmental Compliance..............................  67
Section 4.8.  Taxes.................................................  69
Section 4.9.  Full Disclosure.......................................  69
</TABLE> 

                                       i
<PAGE>

<TABLE> 
<CAPTION> 
<S>                                                                  <C>    
 
Section 4.10.  Solvency.............................................  69
Section 4.11.  Use of Proceeds; Margin Regulations..................  70
Section 4.12.  Governmental Approvals...............................  70
Section 4.13.  Investment Company Act; Public Utility
                  Holding Company Act...............................  70
Section 4.14.  Closing Date Transactions............................  70
Section 4.15.  Representations and Warranties in Loan
                  Documents.........................................  71
Section 4.16.  Patents, Trademarks, etc.............................  71
Section 4.17.  No Default...........................................  71
Section 4.18.  Licenses, etc........................................  71
Section 4.19.  Compliance With Law..................................  72
Section 4.20.  No Burdensome Restrictions...........................  72
Section 4.21.  Brokers' Fees........................................  72
Section 4.22.  Labor Matters........................................  72
Section 4.23.  Organizational Documents.............................  72
Section 4.24.  Principal Offices....................................  73
Section 4.25.  REIT Status..........................................  73
Section 4.26.  Ownership of Property................................  73
Section 4.27.  Insurance............................................  73
Section 4.28.  Year 2000 Compliance.................................  73
</TABLE>

                                   ARTICLE V
                       AFFIRMATIVE AND NEGATIVE COVENANTS
                       ----------------------------------
<TABLE>
<CAPTION>

<S>                                                                   <C>
Section 5.1.   Information..........................................  74
Section 5.2.   Payment of Obligations...............................  77
Section 5.3.   Maintenance of Property; Insurance...................  78
Section 5.4.   Conduct of Business..................................  78
Section 5.5.   Compliance with Laws.................................  78
Section 5.6.   Inspection of Property, Books and
                     Records........................................  79
Section 5.7.   Existence............................................  79
Section 5.8.   Financial Covenants..................................  79
Section 5.9.   Restriction on Fundamental Changes;
                     Operation and Control..........................  81
Section 5.10.  Changes in Business..................................  81
Section 5.11.  Sale of Unencumbered Asset Pool
                      Properties....................................  82
Section 5.12.  Fiscal Year; Fiscal Quarter..........................  82
Section 5.13.  Margin Stock.........................................  82
Section 5.14.  Development Activities...............................  82
Section 5.15.  Interest Rate Protection.............................  83
Section 5.16.  Joint Ventures.......................................  83
Section 5.17.  Investments in Unimproved Real
                      Property......................................  83
Section 5.18.  Use of Proceeds......................................  83
Section 5.19.  Borrower Status......................................  83
Section 5.20.  Certain Requirements for the Unencum-
                      bered Asset Pool..............................  84

</TABLE>

                                      ii
<PAGE>
 
                                   ARTICLE VI
                                    DEFAULTS
                                    --------
<TABLE>
<CAPTION>

<S>                                                                  <C>
Section 6.1.  Events of Default.....................................  84
Section 6.2.  Rights and Remedies...................................  88
Section 6.3.  Notice of Default.....................................  89
Section 6.4.  Actions in Respect of Letters of Credit...............  89
</TABLE>

                                  ARTICLE VII
                                 THE LEAD AGENT
                                 --------------
<TABLE>
<CAPTION>

<S>                                                                   <C>
Section 7.1.  Appointment and Authorization.........................  92
Section 7.2.  Lead Agent and Affiliates.............................  92
Section 7.3.  Action by Lead Agent..................................  93
Section 7.4.  Consultation with Experts.............................  93
Section 7.5.  Liability of Lead Agent...............................  93
Section 7.6.  Indemnification.......................................  94
Section 7.7.  Credit Decision.......................................  94
Section 7.8.  Successor Lead Agent..................................  94
Section 7.9.  Lead Agent's Fee......................................  95
Section 7.10. Copies of Notices.....................................  95
</TABLE>

                                  ARTICLE VIII
                             CHANGE IN CIRCUMSTANCES
                             -----------------------
<TABLE>
<CAPTION>
<S>                                                                  <C>
Section 8.1.  Basis for Determining Interest Rate
                     Inadequate or Unfair...........................  95
Section 8.2.  Illegality............................................  96
Section 8.3.  Increased Cost and Reduced Return.....................  97
Section 8.4.  Taxes.................................................  99
Section 8.5.  Base Rate Loans Substituted for
                     Affected Euro-Dollar Loans..................... 102
</TABLE>

                                   ARTICLE IX
                                  MISCELLANEOUS
                                  -------------
<TABLE>
<CAPTION>

<S>                                                                  <C>
Section 9.1.  Notices.............................................. 103
Section 9.2.  No Waivers........................................... 103
Section 9.3.  Expenses; Indemnification............................ 104
Section 9.4.  Sharing of Set-Offs.................................. 105
Section 9.5.  Amendments and Waivers............................... 106
Section 9.6.  Successors and Assigns............................... 107
Section 9.7.  Governing Law; Submission to
                    Jurisdiction................................... 111
Section 9.8.  Marshaling; Recapture................................ 111
Section 9.9.  Counterparts; Integration;
                     Effectiveness.................................. 112
Section 9.10. WAIVER OF JURY TRIAL................................. 112
Section 9.11. Survival............................................. 112
Section 9.12. Domicile of Loans.................................... 112
Section 9.13. Limitation of Liability.............................. 113
</TABLE> 

                                      iii
<PAGE>
 
Section 9.14.  No Bankruptcy Proceedings............................ 113


Exhibit A    -  Form of Note
Exhibit A-1  -  Form of Note
Exhibit B    -  Unencumbered Asset Pool Properties (Fee Interests)
Exhibit C    -  Unencumbered Asset Pool Properties (Leasehold Interests)
Exhibit D    -  Form of Assignment and Assumption Agreement
Exhibit E    -  Form of Money Market Quote Request
Exhibit F    -  Form of Invitation for Money Market Quotes
Exhibit G    -  Form of Money Market Quote
Exhibit H    -  Form of Designation Agreement

Schedule 4.22- Labor Matters

                                      iv

<PAGE>
 
                AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT


     AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT dated as of October 9,
1998, among KILROY REALTY, L.P. (the "Borrower"), MORGAN GUARANTY TRUST COMPANY
                                      --------                                 
OF NEW YORK, as Bank and as Lead Agent for the Banks and the BANKS listed on the
signature pages hereof (the "Banks").
                             -----   


                              W I T N E S S E T H:
                              - - - - - - - - - - 


     WHEREAS, the Borrower, the Lead Agent and the Banks entered into a
Revolving Credit Agreement, dated as of February 24, 1998 (the "Existing Credit
                                                                ---------------
Agreement"); and
- ---------       

     WHEREAS, the parties hereto have agreed to amend and restate the terms and
conditions contained in the Existing Credit Agreement in their entirety as
hereinafter set forth.
 
     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     I.  The Existing Credit Agreement is hereby modified so that all of the
terms and conditions of the aforesaid Existing Credit Agreement shall be
restated in their entirety as set forth herein, and the Borrower agrees to
comply with and be subject to all of the terms, covenants and conditions of this
Agreement.

     II.  This Agreement shall be binding upon and inure to the benefit of the
parties hereto, and their respective successors and assigns, and shall be deemed
to be effective as of the date hereof.

     III.  Any reference in the Notes, any other Loan Document or any other
document executed in connection with this Agreement to the Existing Credit
Agreement shall be deemed to refer to this Agreement.

     The parties hereto agree as follows:
<PAGE>
 
                                   ARTICLE I

                                  DEFINITIONS

        Section 1.1.  Definitions.  The following terms, as used herein, have
                      -----------
 the following meanings:

        "Absolute Rate Auction" means a solicitation of Money Market Quotes 
         ---------------------
setting forth Money Market Absolute Rates pursuant to Section 2.3.

        "Adjusted London Interbank Offered Rate" has the meaning set forth in
         --------------------------------------                              
Section 2.7(b).

        "Adjustment Date" shall mean the date that the Borrower receives an
         ---------------                                                   
Investment Grade Rating for its unsecured senior long term indebtedness from at
least two (2) Rating Agencies, at least one (1) of which shall be either S&P or
Moody's.

        "Administrative Questionnaire" means, with respect to each Bank, an
         ----------------------------                                      
administrative questionnaire in the form prepared by the Lead Agent and
submitted to the Lead Agent (with a copy to the Borrower) duly completed by such
Bank.

        "Agreement" means this Amended and Restated  Revolving Credit Agreement
         --------- 
as the same may from time to time hereafter be modified, supplemented or
amended.

        "Annual EBITDA" means, measured as of the last day of each calendar
         -------------                                                     
quarter, an amount derived from (i) total revenues relating to all Real Property
Assets of the Borrower, the General Partner and their Consolidated Subsidiaries
or to the Borrower's or the General Partner's interest in Minority Holdings for
the previous four consecutive calendar quarters including the quarter then
ended, on an accrual basis with adjustments for the straight-lining of rents,
                                                                             
plus (ii) interest and other income of the Borrower, the General Partner and
- ----                                                                        
their Consolidated Subsidiaries, including, without limitation, real estate
service revenues, for such period, less (iii) total operating expenses and other
                                   ----                                         
expenses relating to such Real Property Assets and to the Borrower's and the
General Partner's interest in Minority Holdings for such period (other than
interest, taxes, depreciation, amortization, and other non-cash items), less
                                                                        ----
(iv) total corpo-

                                       2
<PAGE>
 
rate operating expenses (including general overhead expenses) and other expenses
of the Borrower, the General Partner, their Consolidated Subsidiaries and the
Borrower's and the General Partner's interest in Minority Holdings (other than
interest, taxes, depreciation, amortization and other non-cash items), for such
period.

        "Applicable Interest Rate" means the lesser of (x) the rate at which the
         ------------------------                                               
interest rate applicable to any floating rate Debt could be fixed, at the time
of calculation, by the Borrower entering into an unsecured interest rate swap
agreement (or, if such rate is incapable of being fixed by entering into an
unsecured interest rate swap agreement at the time of calculation, a reasonably
determined fixed rate equivalent), and (y) the rate at which the interest rate
applicable to such floating rate Debt is actually capped, at the time of
calculation, if the Borrower has entered into an interest rate cap agreement
with respect thereto or if the documentation for such Debt contains a cap.

        "Applicable Lending Office" means, with respect to any Bank, (i) in the
         -------------------------                                             
case of its Base Rate Loans, its Domestic Lending Office, (ii) in the case of
its Euro-Dollar Loans, its Euro-Dollar Lending Office, and (iii) in the case of
its Money Market Loans, its Money Market Lending Office.

        "Applicable Margin" means, prior to the Adjustment Date, with respect to
         -----------------                                                      
each Euro-Dollar Loan, the respective percentages per annum determined, at any
time, based on the range into which the Total Debt Ratio then falls, in
accordance with the table set forth below:

<TABLE>
<CAPTION>
- ---------------------------------------------------------------
      Total Debt Ratio               Applicable Margin for
                                Euro-Dollar Loans (% per annum)
- ---------------------------------------------------------------
<S>                             <C>
less than 25%                                 1.00%
- ---------------------------------------------------------------
equal to or greater than 25%                  1.125%
but less than 35%                       
- ---------------------------------------------------------------
equal to or greater than 35%                  1.25%
but less than 45%                       
- ---------------------------------------------------------------
equal to or greater than 45%                  1.375%
but less than 55%
- ---------------------------------------------------------------
</TABLE>

                                       3
<PAGE>
 
From and after the Adjustment Date, the Applicable Margin with respect to each
Euro-Dollar Loan shall mean the respective percentages per annum determined, at
any time, based on the range into which the Borrower's Credit Rating (if any)
then falls, in accordance with the table set forth below.  Any change in the
Borrower's Credit Rating shall be effective immediately as of the date on which
any of the Rating Agencies announces a change in the Borrower's Credit Rating or
the date on which the Borrower (or, as applicable, the General Partner) has no
credit rating, whichever is applicable.  In the event that the Borrower (or, as
applicable, the General Partner) receives two (2) credit ratings that are not
equivalent, the Applicable Margin shall be determined by the lower of such two
(2) credit ratings.  In the event that Borrower (or, as applicable, the General
Partner) receives more than two (2) credit ratings and such credit ratings are
not equivalent, the Applicable Margin shall be determined by the lower of the
two (2) highest ratings, provided that each of said two (2) highest ratings
shall be Investment Grade Ratings and at least one of which shall be an
Investment Grade Rating from S&P or Moody's.

                                       4
<PAGE>
 
<TABLE>
<CAPTION>
- ---------------------------------------------------------------- 
Borrower's Credit Rating              Applicable Margin for
 (S&P/Moody's Ratings)           Euro-Dollar Loans (% per annum)
- ----------------------------------------------------------------
<S>                              <C>
BBB+/Baa1                                     0.65%
- ---------------------------------------------------------------- 
BBB/Baa2 (or better)                          0.75%
- ---------------------------------------------------------------- 
BBB-/Baa3                                     0.90%
- ----------------------------------------------------------------
Less than Investment Grade                   1.125%
Rating or no rating
- ---------------------------------------------------------------
</TABLE>

        "Assignee" has the meaning set forth in Section 9.6(c).
         --------                                              
  
        "Bank" means each bank listed on the signature pages hereof, each 
         ----   
Assignee which becomes a Bank pursuant to Section 9.6(c), and their respective
successors and each Designated Lender; provided, however, that the term "Bank"
                                                                         ----
shall exclude each Designated Lender when used in reference to a Committed Loan,
the Commitments or terms relating to the Committed Loans and the Commitments and
shall further exclude each Designated Lender for all other purposes hereunder
except that any Designated Lender which funds a Money Market Loan shall, subject
to Section 9.6(d), have the rights (including the rights given to a Bank
contained in Section 9.3 and otherwise in Article 9) and obligations of a Bank
associated with holding such Money Market Loan.

        "Bankruptcy Code" means Title 11 of the United States Code, entitled
         ---------------                                                    
"Bankruptcy", as amended from time to time, and any successor statute or
statutes.

        "Base Rate" means, for any day, a rate per annum equal to the higher 
         ---------    
of (i) the Prime Rate for such day and (ii) the sum of the Federal Funds Rate
plus .50%.

        "Base Rate Borrowing" means a Borrowing comprised of Base Rate Loans.
         -------------------                                                 

        "Base Rate Loan" means a Committed Loan to be made by a Bank as a Base 
         -------------- 
Rate Loan in accordance with the applicable Notice of Borrowing or pursuant to
Article VIII.

                                       5
<PAGE>
 
        "Benefit Arrangement" means at any time an employee benefit plan within
         -------------------  
the meaning of Section 3(3) of ERISA which is not a Plan or a Multiemployer Plan
and which is maintained or otherwise contributed to by any member of the ERISA
Group.

        "Borrower" means Kilroy Realty, L.P. and its successors.
         --------                                               

        "Borrower's Credit Rating" means the rating assigned by the Rating 
         ------------------------ 
Agencies to the General Partner's or the Borrower's senior unsecured long term
indebtedness.

        "Borrowing" has the meaning set forth in Section 1.3.
         ---------                                           

        "Capital Expenditures" means, for any period, the sum of all 
         --------------------
expenditures (whether paid in cash or accrued as a liability) by the Borrower
which are capitalized on the consolidated balance sheet of the Borrower in
conformity with GAAP, but less (i) all expenditures made with respect to the
acquisition by the Borrower and its Consolidated Subsidiaries of any interest in
real property within nine months after the date such interest in real property
is acquired and (ii) capital expenditures made from the proceeds of insurance or
condemnation awards (or payments in lieu thereof) or indemnity payments received
during such period by Borrower or any of its Consolidated Subsidiaries from
third parties.

        "Cash or Cash Equivalents" means (i) cash, (ii) direct obligations of 
         ------------------------   
the United States Government, including, without limitation, treasury bills,
notes and bonds, (iii) interest bearing or discounted obligations of Federal
agencies and Government sponsored entities or pools of such instruments offered
by banks rated AA or better by S&P or Aa2 by Moody's and dealers, including,
without limitation, Federal Home Loan Mortgage Corporation participation sale
certificates, Government National Mortgage Association modified pass-through
certificates, Federal National Mortgage Association bonds and notes, Federal
Farm Credit System securities, (iv) time deposits, domestic and Eurodollar
certificates of deposit, bankers acceptances, commercial paper rated at least A-
1 by S&P and P-1 by Moody's, and/or guaranteed by an Aa rating by Moody's, an AA
rating by S&P, or better rated 

                                       6
<PAGE>
 
credit, floating rate notes, other money market instruments and letters of
credit each issued by banks which have a long-term debt rating of at least AA by
S&P or Aa2 by Moody's, (v) obligations of domestic corporations, including,
without limitation, commercial paper, bonds, debentures, and loan
participations, each of which is rated at least AA by S&P, and/or Aa2 by
Moody's, and/or unconditionally guaranteed by an AA rating by S&P, an Aa2 rating
by Moody's, or better rated credit, (vi) obligations issued by states and local
governments or their agencies, rated at least MIG-1 by Moody's and/or SP-1 by
S&P and/or guaranteed by an irrevocable letter of credit of a bank with a long-
term debt rating of at least AA by S&P or Aa2 by Moody's, (vii) repurchase
agreements with major banks and primary government securities dealers fully
secured by U.S. Government or agency collateral equal to or exceeding the
principal amount on a daily basis and held in safekeeping, (viii) real estate
loan pool participations, guaranteed by an entity with an AA rating given by S&P
or an Aa2 rating given by Moody's, or better rated credit, and (ix) shares of
any mutual fund that has its assets primarily invested in the types of
investments referred to in clauses (i) through (v).

        "Closing Date" means the date on which the Lead Agent shall have 
         ------------  
received the documents specified in or pursuant to Section 3.1.

        "Commitment" means, with respect to each Bank, the amount committed by
         ----------   
such Bank pursuant to this Agreement with respect to any Loans, as such amount
may be reduced from time to time pursuant to Sections 2.9 and 2.10.

        "Committed Loan" means a Loan made by a Bank pursuant to Section 2.1;
         --------------                                                      
provided that, if any such Loan or loans (or portions thereof) are combined or
- --------                                                                      
subdivided pursuant to a Notice of Interest Rate Election, the term "Committed
Loan" shall refer to the combined principal amount resulting from such
combination or to each of the separate principal amounts resulting from such
subdivision, as the case may be.

        "Completion of Construction" means the issuance of a temporary or 
         -------------------------- 
permanent certificate of occupancy for the improvements under construction,
permitting the use and occupancy thereof for their regular intended uses.

        "Consolidated Subsidiary" means at any date any Subsidiary or other 
         -----------------------    
entity which is consolidated with the Borrower in accordance with GAAP.

                                       7
<PAGE>
 
        "Consolidated Tangible Net Worth" means at any date the consolidated
         -------------------------------                                    
stockholders' equity of the Borrower (determined on a book basis), less its
consolidated Intangible Assets, all determined as of such date.  For purposes of
this definition "Intangible Assets" means with respect to any such intangible
                 -----------------                                           
assets, the amount (to the extent reflected in determining such consolidated
stockholders' equity) of (i) all write-ups subsequent to December 31, 1997 in
the book value of any asset owned by the Borrower or a Consolidated Subsidiary
and (ii) goodwill, patents, trademarks, service marks, trade names, anticipated
future benefit of tax loss carry forwards, copyrights, organization or
developmental expenses and other intangible assets.

        "Contingent Obligation" as to any Person means, without duplication, (i)
         ---------------------                                                  
any contingent obligation of such Person required to be shown on such Person's
balance sheet in accordance with GAAP, and (ii) any obligation required to be
disclosed in the footnotes to such Person's financial statements, guaranteeing
partially or in whole any non-recourse Debt, lease, dividend or other
obligation, exclusive of contractual indemnities (including, without limitation,
any indemnity or price-adjustment provision relating to the purchase or sale of
securities or other assets) and guarantees of non-monetary obligations (other
than guarantees of completion) which have not yet been called on or quantified,
of such Person or of any other Person.  The amount of any Contingent Obligation
described in clause (ii) shall be deemed to be (a) with respect to a guaranty of
interest or interest and principal, or operating income guaranty, the sum of all
payments required to be made thereunder (which in the case of an operating
income guaranty shall be deemed to be equal to the debt service for the note
secured thereby), calculated at the Applicable Interest Rate, through (i) in the
case of an interest or interest and principal guaranty, the stated date of
maturity of the obligation (and commencing on the date interest could first be
payable thereunder), or (ii) in the case of an operating income guaranty, the
date through which such guaranty will remain in effect, and (b) with respect to
all guarantees not covered by the preceding clause (a), an amount equal to the
stated or determinable amount of the primary obligation in respect of which such
guaranty is made or, if not stated or determinable, the maximum reasonably
anticipated liability in respect thereof (assuming such Person is required to
perform thereunder) as recorded on the balance sheet and on the footnotes to the
most recent financial statements of the Borrower required to be delivered
pursuant to Section 4.4 hereof.  Notwithstanding anything contained herein to
the contrary, guarantees of completion shall not be deemed to be

                                       8
<PAGE>
 
Contingent Obligations unless and until a claim for payment or performance has
been made thereunder, at which time any such guaranty of completion shall be
deemed to be a Contingent Obligation in an amount equal to any such claim.
Subject to the preceding sentence, (i) in the case of a joint and several
guaranty given by such Person and another Person (but only to the extent such
guaranty is recourse, directly or indirectly to the Borrower), the amount of the
guaranty shall be deemed to be 100% thereof unless and only to the extent that
such other Person has delivered Cash or Cash Equivalents to secure all or any
part of such Person's guaranteed obligations, (ii) in the case of joint and
several guarantees given by a Person in whom the Borrower owns an interest
(which guarantees are non-recourse to the Borrower), to the extent the
guarantees, in the aggregate, exceed 15% of total real estate investments, the
amount in excess of 15% shall be deemed to be a Contingent Obligation of the
Borrower, and (iii) in the case of a guaranty (whether or not joint and several)
of an obligation otherwise constituting Debt of such Person, the amount of such
guaranty shall be deemed to be only that amount in excess of the amount of the
obligation constituting Debt of such Person. Notwithstanding anything contained
herein to the contrary, "Contingent Obligations" shall not be deemed to include
guarantees of Unused Commitments or of construction loans to the extent the same
have not been drawn.

     "Debt" of any Person (including Minority Holdings) means, without
      ----                                                            
duplication, (A) as shown on such Person's consolidated balance sheet (i) all
indebtedness of such Person for borrowed money or for the deferred purchase
price of property and, (ii) all indebtedness of such Person evidenced by a note,
bond, debenture or similar instrument (whether or not disbursed in full in the
case of a construction loan), (B) the face amount of all letters of credit
issued for the account of such Person and, without duplication, all unreimbursed
amounts drawn thereunder, (C) all Contingent Obligations of such Person, (D) all
payment obligations of such Person under any interest rate protection agreement
(including, without limitation, any interest rate swaps, caps, floors, collars
and similar agreements) and currency swaps and similar agreements which were not
entered into specifically in connection with Debt set forth in clauses (A), (B)
or (C) hereof.  For purposes of this Agreement, Debt (other than Contingent
Obligations) of the Borrower shall

                                       9
<PAGE>
 
be deemed to include only the Borrower's pro rata share (such share being based
upon the Borrower's percentage ownership interest as shown on the Borrower's
annual audited financial statements) of the Debt of any Person in which the
applicable Borrower, directly or indirectly, owns an interest, provided that
such Debt is nonrecourse, both directly and indirectly, to the applicable
Borrower.

        "Default" means any condition or event which constitutes an Event of
         -------                                                            
Default or which with the giving of notice or lapse of time or both would,
unless cured or waived, become an Event of Default.

        "Designated Lender" means a special purpose corporation that (i) shall
         -----------------   
have become a party to this Agreement pursuant to Section 9.6(d), and (ii) is
not otherwise a Bank.

        "Designated Lender Notes" means promissory notes of the Borrower,
         -----------------------                                         
substantially in the form of Exhibit A-1 hereto, evidencing the obligation of
the Borrower to repay Money Market Loans made by Designated Lenders, and
"Designated Lender Note" means any one of such promissory notes issued under
Section 9.6(d) hereof.

        "Designating Lender" shall have the meaning set forth in Section 9.6(d)
         ------------------                                                    
hereof.

        "Designation Agreement" means a designation agreement in substantially
         ---------------------  
the form of Exhibit H attached hereto, entered into by a Bank and a Designated
Lender and accepted by the Lead Agent.

        "Domestic Business Day" means any day except a Saturday, Sunday or other
         ---------------------                                                  
day on which commercial banks in New York City and Los Angeles are authorized by
law to close.

        "Domestic Lending Office" means, as to each Bank, its office located 
         ----------------------- 
within the United States at its address set forth in its Administrative
Questionnaire (or identified in its Administrative Questionnaire as its Domestic
Lending Office) or such other office within the United States as such Bank may
hereafter designate as its Domestic Lending Office by notice to the Borrower and
the Lead Agent; provided that no Bank shall be permitted to change its Domestic
Lending Office if as a result of such 

                                       10
<PAGE>
 
change either (i) pursuant to the provisions of Section 8.1 or Section 8.2,
Borrower would be unable to maintain any Loans as Euro-Dollar Loans; or (ii)
Borrower would be required to make any payment to such Bank pursuant to the
provisions of Section 8.3 or Section 8.4.

        "Due Diligence Package" has the meaning provided in Section 3.3.
         ---------------------                                          

        "Duff & Phelps" means Duff & Phelps Credit Rating Co. or any successor
         -------------                                                        
thereto.

        "Environmental Affiliate" means any partnership, or joint venture, 
         ----------------------- 
trust or corporation in which an equity interest is owned by the Borrower,
either directly or indirectly.

        "Environmental Approvals" means any permit, license, approval, ruling,
         -----------------------                                              
variance, exemption or other authorization required under applicable
Environmental Laws.

        "Environmental Claim" means, with respect to any Person, any notice, 
         -------------------   
claim, demand or similar communication (written or oral) by any other Person
alleging potential liability for investigatory costs, cleanup costs,
governmental response costs, natural resources damage, property damage, personal
injuries, fines or penalties arising out of, based on or resulting from (i) the
presence, or release into the environment, of any Material of Environmental
Concern at any location, whether or not owned by such Person or (ii)
circumstances forming the basis of any violation, or alleged violation, of any
Environmental Law, in each case as to which could reasonably be expected to have
a Material Adverse Effect.

        "Environmental Laws" means any and all federal, state, local and foreign
         ------------------                                                     
statutes, laws, judicial decisions, regulations, ordinances, rules, judgments,
orders, decrees, plans, injunctions, permits, concessions, grants, franchises,
licenses, agreements and other governmental restrictions relating to the
environment, the effect of the environment on human health or to emissions,
discharges or releases of pollutants, contaminants, Material of Environmental
Concern or hazardous wastes into the environment including, without limitation,
ambient air, surface water, ground water, or land, 

                                       11
<PAGE>
 
or otherwise relating to the manufacture, processing, distribution, use,
treatment, storage, disposal, transport or handling of pollutants, contaminants,
Material of Environmental Concern or hazardous wastes or the clean-up or other
remediation thereof.

        "Environmental Report" has the meaning set forth in Section 4.7.
         --------------------                                           

        "ERISA" means the Employee Retirement Income Security Act of 1974, as
         -----                                                               
amended, or any successor statute.

        "ERISA Group" means the Borrower, any Subsidiary and all members of a
         -----------                                                         
controlled group of corporations and all trades or businesses (whether or not
incorporated) under common control which, together with the Borrower or any
Subsidiary, are treated as a single employer under Section 414 of the Internal
Revenue Code.

        "Euro-Dollar Borrowing" has the meaning set forth in Section 1.3.
         ---------------------                                           

        "Euro-Dollar Business Day" means any Domestic Business Day on which
         ------------------------                                          
commercial banks are open for international business (including dealings in
dollar deposits) in London.

        "Euro-Dollar Lending Office" means, as to each Bank, its office, branch
         --------------------------    
or affiliate located at its address set forth in its Administrative
Questionnaire (or identified in its Administrative Questionnaire as its Euro-
Dollar Lending Office) or such other office, branch or affiliate of such Bank as
it may hereafter designate as its Euro-Dollar Lending Office by notice to the
Borrower and the Lead Agent; provided that no Bank shall be permitted to change
its Euro-Dollar Lending Office if as a result of such change either (i) pursuant
to the provisions of Section 8.1 or Section 8.2, Borrower would be unable to
maintain any Loans as Euro-Dollar Loans; or (ii) Borrower would be required make
any payment to such Bank pursuant to the provisions of Sections 8.3 or Section
8.4.

        "Euro-Dollar Loan" means a Committed Loan to be made by a Bank as a 
         ---------------- 
Euro-Dollar Loan in accordance with 

                                       12
<PAGE>
 
the applicable Notice of Committed Borrowing or Notice of Interest Rate
Election.

        "Euro-Dollar Reserve Percentage" has the meaning set forth in Section
         ------------------------------                                      
2.7(b).

        "Event of Default" has the meaning set forth in Section 6.1.
         ----------------                                           

        "Federal Funds Rate" means, for any day, the rate per annum (rounded
         ------------------                                                 
upward, if necessary, to the nearest 1/100th of 1%) equal to the weighted
average of the rates on overnight Federal funds transactions with members of the
Federal Reserve System arranged by Federal funds brokers on such day, as
published by the Federal Reserve Bank of New York on the Domestic Business Day
next succeeding such day; provided that (i) if such day is not a Domestic
                          --------                                       
Business Day, the Federal Funds Rate for such day shall be such rate on such
transactions on the next preceding Domestic Business Day as so published on the
next succeeding Domestic Business Day, and (ii) if no such rate is so published
on such next succeeding Domestic Business Day, the Federal Funds Rate for such
day shall be the average rate quoted to Morgan on such day on such transactions
as determined by the Lead Agent.

        "Federal Reserve Board" means the Board of Governors of the Federal 
         ---------------------  
Reserve System as constituted from time to time.

        "Financeable Ground Lease" means either (x) a ground lease reasonably
         ------------------------                                            
satifactory to the Required Banks, or (y) a ground lease which provides (i) for
a remaining term of not less than 25 years (including options and renewals) from
the date that such Real Property Asset shall become an Unencumbered Asset Pool
Property, (ii) that the ground lease will not be terminated until any leasehold
mortgagee shall have received notice of a default and has had a reasonable
opportunity to cure the same or complete foreclosure, and has failed to do so,
(iii) for a new lease on substantially the same terms to any leasehold mortgagee
recognized under such ground lease as tenant if the ground lease is terminated
for any reason, (iv) for non-merger of the fee and leasehold estates, and (v)
transferability of the tenant's interest under the ground lease, subject only to
the landlord's reasonable approval. Notwithstanding the foregoing, it is hereby

                                       13
<PAGE>
 
agreed that the ground lease with respect to the Real Property Asset commonly
known as "Kilroy Airport Center, Long Beach, California", shall be deemed to be
a "Financeable Ground Lease".

        "FFO" means "funds from operations," defined to mean net income (or 
         ---    
loss) (computed in accordance with GAAP), excluding gains (or losses) from debt
restructurings and sales of properties, plus depreciation and amortization,
after adjustments for Minority Holdings.  Adjustments for Minority Holdings will
be calculated to reflect FFO on the same basis as above.

        "Fitch" means Fitch Investors Services, L.P. or any successor thereto.
         -----                                                                

        "FMV Cap Rate" means 9%.
         ------------           

        "Fronting Bank" shall mean Morgan or such other Bank which Borrower is
         -------------                                                        
notified by the Lead Agent may be a Fronting Bank and which is designated by
Borrower in its Notice of Borrowing as the Bank which shall issue a Letter of
Credit with respect to such Notice of Borrowing.

        "GAAP" means generally accepted accounting principles recognized as 
         ---- 
such in the opinions and pronouncements of the Accounting Principles Board and
the American Institute of Certified Public Accountants and Board or in such
other statements by such other entity as may be approved by a significant
segment of the accounting profession, which are applicable to the circumstances
as of the date of determination.

        "General Partner" means Kilroy Realty Corporation, a Maryland 
         ---------------
corporation.

        "Governmental Authority" means any Federal, state or local government or
         ----------------------                                                 
any other political subdivision thereof or agency exercising executive,
legislative, judicial, regulatory or administrative functions having
jurisdiction over the Borrower or any Mortgaged Property.

        "Group of Loans" means, at any time, a group of Loans consisting of 
         --------------                           
(i) all Committed Loans which are Base Rate Loans at such time, or (ii) all
Committed Loans which are Euro-Dollar Loans having the same Interest 

                                       14
<PAGE>
 
Period at such time; provided that, if a Loan of any particular Bank is
                     --------                                          
converted to or made as a Base Rate Loan pursuant to Section 8.2 or 8.4, such
Loan shall be included in the same Group or Groups of Loans from time to time as
it would have been in if it had not been so converted or made.

        "Guaranty" means the Amended and Restated Guaranty of Payment, dated 
         -------- 
as of even date herewith, made by the General Partner.

        "Indemnitee" has the meaning set forth in Section 9.3(b).
         ----------                                              

        "Interest Period" means:  (i) with respect to each Euro-Dollar 
         --------------- 
Borrowing, the period commencing on the date of such Committed Borrowing or of
any Notice of Interest Election with respect to such Committed Borrowing and
ending one, two, three or six months thereafter, as the Borrower may elect in
the applicable Notice of Committed Borrowing or Notice of Interest Election;
provided that:
- --------      

        (a)  any Interest Period which would otherwise end on a day which is not
     a Euro-Dollar Business Day shall be extended to the next succeeding Euro-
     Dollar Business Day unless such Euro-Dollar Business Day falls in another
     calendar month, in which case such Interest Period shall end on the next
     preceding Euro-Dollar Business Day;

        (b)  any Interest Period which begins on the last Euro-Dollar Business
     Day of a calendar month (or on a day for which there is no numerically
     corresponding day in the calendar month at the end of such Interest Period)
     shall end on the last Euro-Dollar Business Day of a calendar month.

     (ii)  with respect to each Base Rate Borrowing, the period commencing on
the date of such Committed Borrowing or Notice of Interest Rate Election and
ending 30 days thereafter; provided that any Interest Period which would
                           --------                                     
otherwise end on a day which is not a Euro-Dollar Business Day shall be extended
to the next succeeding Euro-Dollar Business Day.

                                       15
<PAGE>
 
     (iii)  with respect to each Money Market LIBOR Loan, the period commencing
on the date of borrowing specified in the applicable Notice of Borrowing and
ending 1, 2, 3 or 6 months thereafter, as the Borrower may elect in the
applicable Notice of Money Market Borrowing in accordance with Section 2.3;
provided that:
- --------      

        (a)  any Interest Period which would otherwise end on a day which is not
     a Euro-Dollar Business Day shall be extended to the next succeeding Euro-
     Dollar Business Day unless such Euro-Dollar Business Day falls in another
     calendar month, in which case such Interest Period shall end on the next
     preceding Euro-Dollar Business Day;

        (b)  any Interest Period which begins on the last Euro-Dollar Business
     Day of a calendar month (or on a day for which there is no numerically
     corresponding day in the calendar month at the end of such Interest Period)
     shall, subject to clause (c) below, end on the last Euro-Dollar Business
     Day of a calendar month;

        (c)  if any Interest Period includes a date on which a payment of
     principal of Loans is required to be made under Section 2.10 but does not
     end on such date, then (i) the principal amount (if any) of each Money
     Market LIBOR Loan required to be repaid on such date and (ii) the remainder
     (if any) of each such Money Market LIBOR Loan shall have an Interest Period
     determined as set forth above; and

        (d)  any Interest Period which would otherwise end after the Maturity
     Date shall end on the Maturity Date.

     (iv)  with respect to each Money Market Absolute Rate Loan, the period
commencing on the date of borrowing specified in the applicable Notice of
Borrowing and ending such number of days thereafter (but not less than 14 days)
as the Borrower may elect in accordance with Section 2.3; provided that:
                                                          --------      

        (a)  any Interest Period which would otherwise end on a day which is not
     a Euro-Dollar Business Day shall be extended to the next succeeding Euro-
     Dollar Business Day; and

                                       16
<PAGE>
 
        (b)  if any Interest Period includes a date on which a payment of
     principal of Loans is required to be made under Section 2.10 but does not
     end on such date, then (i) the principal amount (if any) of each Money
     Market Absolute Rate Loan required to be repaid on such date and (ii) the
     remainder (if any) of each such Money Market Absolute Rate Loan shall have
     an Interest Period determined as set forth above; and

        (c)  any Interest Period which would   otherwise end after the Maturity
     Date shall end on   the Maturity Date.

        "Internal Revenue Code" means the Internal Revenue Code of 1986, as
         ---------------------                                             
amended, or any successor statute.

        "Investment Grade Rating" means a rating for a Person's senior long-term
         -----------------------                                                
unsecured debt, or if no such rating has been issued, a "shadow" rating, of BBB-
or better from S&P, and a rating or "shadow" rating of Baa3 or better from
Moody's or a rating or "shadow" rating equivalent to the foregoing from either
Duff & Phelps or Fitch.  Any such "shadow" rating shall be evidenced by a letter
from the applicable Rating Agency or by such other evidence as may be reasonably
acceptable to the Lead Agent (as to any such other evidence, the Lead Agent
shall present the same to, and discuss the same with, the Banks).

        "Lead Agent" means Morgan Guaranty Trust Company of New York in its
         ----------                                                        
capacity as Lead Agent for the Banks hereunder, and its successors in such
capacity.

        "Letter(s) of Credit" has the meaning provided in Section 2.2(b).
         -------------------                                             

        "Letter of Credit Collateral" has the meaning provided in Section 6.4.
         ---------------------------                                          

        "Letter of Credit Collateral Account" has the meaning provided in 
         -----------------------------------   
Section 6.4.

        "Letter of Credit Documents" has the meaning provided in Section 2.17.
         --------------------------                                           

                                       17
<PAGE>
 
        "Letter of Credit Usage" means at any time the sum of (i) the aggregate
         ----------------------                                                
maximum amount available to be drawn under the Letters of Credit then
outstanding, assuming compliance with all requirements for drawing referred to
therein, and (ii) the aggregate amount of the Borrower's unpaid obligations
under this Agreement in respect of the Letters of Credit.

        "LIBOR Auction" means a solicitation of Money Market Quotes setting 
         ------------- 
forth Money Market Margins based on the London Interbank Offered Rate pursuant
to Section 2.3.

        "Lien" means, with respect to any asset, any mortgage, lien, pledge,
         ----                                                               
charge, security interest or encumbrance of any kind, or any other type of
preferential arrangement that has the practical effect of creating a security
interest, in respect of such asset.  For the purposes of this Agreement, each of
the Borrower and any Subsidiary shall be deemed to own subject to a Lien any
asset which it has acquired or holds subject to the interest of a vendor or
lessor under any conditional sale agreement, capital lease or other title
retention agreement relating to such asset.

        "Loan" means a Base Rate Loan, a Euro-Dollar Loan or a Money Market Loan
         ----                                                                   
and "Loans" means Base Rate Loans, Euro-Dollar Loans or Money Market Loans or
     -----                                                                   
any combination of the foregoing.

        "Loan Amount" has the meaning set forth in Section 2.1(a).
         -----------                                              

        "Loan Documents" means this Agreement, the Notes, the Guaranty, the
         --------------                                                    
Letter(s) of Credit, the Letter of Credit Documents and any related documents.

        "London Interbank Offered Rate" has the meaning set forth in Section
         -----------------------------                                      
2.8(b).

        "Margin Stock" shall have the meaning provided such term in Regulation U
         ------------                                                           
and Regulation G of the Federal Reserve Board.

        "Material Adverse Effect" means a material adverse effect upon (i) the
         -----------------------                                              
business, operations, properties or assets of the Borrower or (ii) the ability
of 

                                       18
<PAGE>
 
the Borrower to perform its obligations hereunder in all material respects,
including to pay interest and principal.

        "Material Lease" means, with respect to any Real Property Asset, any 
         --------------   
lease, underletting, concession agreement or license affecting such Real
Property Asset, which represents more than 15% of the gross leasable area of
such Real Property Asset.

        "Material of Environmental Concern" means and includes pollutants,
         ---------------------------------                                
contaminants, hazardous wastes, and toxic, radioactive, caustic or otherwise
hazardous substances, including petroleum, its derivatives, by-products and
other hydrocarbons, or any substance having any constituent elements displaying
any of the foregoing characteristics.

        "Material Plan" means at any time a Plan having aggregate Unfunded
         -------------                                                    
Liabilities in excess of $5,000,000.

        "Maturity Date" has the meaning set forth in Section 2.9.
         -------------                                           

        "Minority Holdings" means partnerships, limited liability companies and
         -----------------                                                     
corporations held or owned by the Borrower which are not consolidated with the
Borrower on its financial statements.

        "Money Market Absolute Rate" has the meaning set forth in Section
         --------------------------                                      
2.3(d)(ii)(4).

        "Money Market Absolute Rate Loan" means a loan to be made by a Bank
         -------------------------------                                   
pursuant to an Absolute Rate Auction.

        "Money Market Lending Office" means, as to each Bank, its Domestic 
         ---------------------------  
Lending Office or such other office, branch or affiliate of such Bank as it may
hereafter designate as its Money Market Lending Office by notice to the Borrower
and the Lead Agent; provided that any Bank may from time to time by notice to
                    --------                                                 
the Borrower and the  Lead Agent designate separate Money Market Lending Offices
for its Money Market LIBOR Loans, on the one hand, and its Money Market Absolute
Rate Loans, on the other hand, in which case all references herein to the Money
Market Lending Office of such Bank shall be 

                                       19
<PAGE>
 
deemed to refer to either or both of such offices, as the context may require.

        "Money Market LIBOR Loan" means a loan to be made by a Bank pursuant 
        -----------------------  
to a LIBOR Auction (including such a loan bearing interest at the Base Rate
pursuant to Section 2.3).

        "Money Market Loan" means a Money Market LIBOR Loan or a Money Market
         -----------------                                                   
Absolute Rate Loan.

        "Money Market Margin" has the meaning set forth in Section 2.3(d)(ii)
         -------------------
(3).

        "Money Market Quote" means an offer by a Bank to make a Money Market 
         ------------------         
Loan in accordance with Section 2.3.

        "Moody's" means Moody's Investors Service, Inc. or any successor 
         -------   
thereto.

        "Morgan" means Morgan Guaranty Trust Company of New York, in its 
         ------ 
individual capacity.

        "Multiemployer Plan" means at any time an employee pension benefit plan
         ------------------                                                    
within the meaning of Section 4001(a)(3) of ERISA to which any member of the
ERISA Group is then making or accruing an obligation to make contributions or
has within the preceding five plan years made contributions, including for these
purposes any Person which ceased to be a member of the ERISA Group during such
five year period.

        "Net Offering Proceeds" means all cash received by the Borrower or the
         ---------------------                                                
General Partner as a result of the sale of common shares of beneficial interest,
preferred shares of beneficial interest (including perpetual preferred),
partnership interests, limited liability company interests, or other ownership
or equity interests in the Borrower or the General Partner (or evidence of
indebtedness of the Borrower or the General Partner convertible into any of the
foregoing) less customary costs and discounts of issuance paid by the Borrower
           ----                                                               
or the General Partner, as the case may be.

        "Net Operating Cash Flow" means, with respect to any Real Property 
         -----------------------   
Asset, the Property Income, calcu-

                                       20
<PAGE>
 
lated on an annualized basis, for the period during which such Real Property
Asset shall have been owned by the Borrower, the General Partner or any of their
Subsidiaries, less Property Expenses, calculated on an estimated, pro forma
(i.e., the results for the period during which such Real Property Asset shall
have been owned shall be annualized, with appropriate adjustments for items of
income and expense which are not earned or incurred in equal monthly amounts)
basis.

        "New Acquisitions" shall mean any Real Property Asset acquired after the
         ----------------                                                       
date hereof.

        "Non-Recourse Debt" means Debt of the Borrower or the General Partner 
         -----------------   
on a consolidated basis for which the right of recovery of the obligee thereof
is limited to recourse against the Real Property Assets securing such Debt
(subject to such limited exceptions to the non-recourse nature of such Debt such
as fraud, misappropriation, misapplication and environmental indemnities, as are
usual and customary in like transactions at the time of the incurrence of such
Debt).

        "Notes" means, collectively, the promissory notes of the Borrower, each
         -----                                                                 
substantially in the form of Exhibit A hereto, evidencing the obligation of the
                             ---------                                         
Borrower to repay the Loans, together with any Designated Lender Notes, and
                                                                           
"Note" means any one of such promissory notes issued hereunder.
- -----                                                          

        "Notice of Borrowing" means a Notice of Committed Borrowing or a Notice
         -------------------
 of Money Market Borrowing.

        "Notice of Committed Borrowing" has the meaning set forth in Section 
         -----------------------------    
2.2.

        "Notice of Interest Election" has the meaning set forth in Section 
         --------------------------- 
2.15(a).

        "Notice of Money Market Borrowing" has the meaning set forth in Section
         --------------------------------                                      
2.3(f).

        "Obligations" means all obligations, liabilities and indebtedness of 
         -----------   
every nature of the Borrower from time to time owing to any Bank under or in
connection with this Agreement or any other Loan Document, including, without
limitation, (i) the outstanding prin-

                                       21
<PAGE>
 
cipal amount of the Committed Loans at such time, plus (ii) the Letter of Credit
Usage at such time, plus (iii) the outstanding principal amount of any Money
Market Loans at such time.

        "Outstanding Balance" means the sum of (i) the aggregate outstanding and
         -------------------                                                    
unpaid principal balance of all Loans and (ii) the Letter of Credit Usage.

        "Parent" means, with respect to any Bank, any Person controlling such 
         ------          
Bank.

        "Participant" has the meaning set forth in Section 9.6(b).
         -----------                                              

        "PBGC" means the Pension Benefit Guaranty Corporation or any entity
         ----                                                              
succeeding to any or all of its functions under ERISA.

        "Permitted Liens" means (a) Liens in favor of the Borrower or the 
         ---------------  
General Partner on all or any part of the assets of Subsidiaries of the Borrower
or the General Partner, as applicable, provided that (i) the Debt to which such
Lien relates is held by the Borrower, (ii) such Debt is not otherwise pledged or
encumbered, and (iii) no more than 5% of the Unencumbered Asset Pool Properties
Value may be subject to any such Liens; (b) Liens to secure the performance of
statutory obligations, surety or appeal bonds, performance bonds, completion
bonds, government contracts or other obligations of a like nature, including
Liens in connection with workers' compensation, unemployment insurance and other
types of statutory obligations or to secure the performance of tenders, bids,
leases, contracts (other than for the repayment of Debt) and other similar
obligations incurred in the ordinary course of business; (c) Liens for taxes,
assessments or governmental charges or claims that are not yet delinquent or
that are being contested in good faith by appropriate proceedings promptly
instituted and diligently concluded; provided, that any reserve or other
appropriate provision as shall be required in conformity with GAAP shall have
been made therefor; (d) Liens on property of the Borrower, the General Partner
or any Subsidiary thereof in favor of the Federal or any state government to
secure certain payments pursuant to any contract, statute or regulation; (e)
easements (including, without limitation, 

                                       22
<PAGE>
 
reciprocal easement agreements and utility agreements), rights of way,
covenants, consents, reservations, encroachments, variations and zoning and
other restrictions, charges or encumbrances (whether or not recorded), which do
not interfere materially with the ordinary conduct of the business of the
Borrower, the General Partner or any Subsidiary thereof and which do not
materially detract from the value of the property to which they attach or
materially impair the use thereof by the Borrower, the General Partner or any
Subsidiary thereof; (f) statutory Liens of carriers, warehousemen, mechanics,
suppliers, materialmen, repairmen or other Liens imposed by law and arising in
the ordinary course of business, for sums due and payable which are not then
past due (or which, if past due, are being contested in good faith and with
respect to which adequate reserves are being maintained to the extent required
by GAAP); (g) Liens not otherwise permitted by this definition and incurred in
the ordinary course of business of any or all of the Borrower, the General
Partner or any Subsidiary thereof with respect to obligations which do not
exceed $500,000 in principal amount in the aggregate at any one time
outstanding; (h) the interests of lessees and lessors under leases of real or
personal property made in the ordinary course of business which would not have a
Material Adverse Effect; and (i) Liens with respect to the security interests
granted to Morgan Guaranty Trust Company of New York, as lead agent, pursuant
to, and in connection with, the Revolving Credit Agreement, dated as of May 21,
1997 (as amended, restated, supplemented or otherwise modified from time to
time), provided, however, that the same shall be removed of record no later than
thirty (30) days from the Closing Date.

        "Person" means an individual, a corporation, a partnership, a limited
         ------ 
liability company, an association, a trust or any other entity or organization,
including a government or political subdivision or an agency or instrumentality
thereof.

        "Plan" means at any time an employee pension benefit plan (other than a
         ----                                                                  
Multiemployer Plan) which is covered by Title IV of ERISA or subject to the
minimum funding standards under Section 412 of the Internal Revenue Code and
either (i) is maintained, or contributed to, by any member of the ERISA Group
for employees 

                                       23
<PAGE>
 
of any member of the ERISA Group or (ii) has at any time within the preceding
five years been maintained, or contributed to, by any Person which was at such
time a member of the ERISA Group for employees of any Person which was at such
time a member of the ERISA Group.

        "Prime Rate" means the rate of interest publicly announced by Morgan 
         ---------- 
in New York City from time to time as its Prime Rate.

        "Pro-Forma Debt Service" means, for any calendar quarter, the greater of
         ----------------------                                                 
(x) the interest actually payable on the Loans, and (y) the amount of debt
service payments determined by applying a 30-year mortgage style amortization
schedule to the Loans outstanding as of the last day of such calendar quarter,
using an interest rate equal to the Treasury Rate plus 1.75%.

        "Property Expenses" means, when used with respect to any Real Property
         -----------------                                                    
Asset, the costs of maintaining such Real Property Asset which are the
responsibility of the owner thereof and that are not paid directly by the tenant
thereof, including, without limitation, taxes, insurance, repairs and
maintenance, but provided that if such tenant is more than 60 days in arrears in
the payment of base or fixed rent, then such costs will also constitute
"Property Expenses", but excluding depreciation, amortization and interest
costs.

        "Property Income" means, when used with respect to any Real Property 
         ---------------  
Asset, cash rents and other cash revenues received in the ordinary course
therefrom, including, without limitation, revenues from any parking leases and
lease termination fees amortized over the remaining term of the lease for which
such termination fee was received (other than pre-paid rents and revenues and
security deposits except to the extent applied in satisfaction of tenants'
obligations for rent).

        "Qualified Development Properties" means any  Real Property Assets which
         --------------------------------                                       
are 100% owned in fee (or leasehold pursuant to a Financeable Ground Lease) by
the Borrower, the General Partner or any of their Consolidated Subsidiaries and
which are not subject to any Lien (other than Permitted Liens), and which are
under construction and which, in accordance with GAAP, have not yet been placed
into service, provided, however, that if 

                                       24
<PAGE>
 
66.67% or more of the net rentable area of any Qualified Development Property
has not been leased to tenants other than tenants that are affiliates of the
Borrower on or before the earlier to occur of (x) the date which is six (6)
months after the Completion of Construction thereof, and (y) the eighteen month
anniversary of the commencement of construction thereof, then the same will
cease to be a Qualified Development Property.

        "Rating Agencies" means, collectively, S&P, Moody's, Duff & Phelps and
         ---------------                                                      
Fitch.

        "Real Property Assets" means as of any time, the real property assets 
         --------------------  
owned directly or indirectly by the Borrower at such time.

        "Recourse Debt" shall mean Debt of the Borrower, the General Partner 
         ------------- 
or any Consolidated Subsidiary that is not Non-Recourse Debt.

        "Reference Bank" means the principal London offices of Morgan.
         --------------                                               

        "Regulation U" means Regulation U of the Board of Governors of the 
         ------------  
Federal Reserve System, as in effect from time to time.

        "Release" means any release, spill, emission, leaking, pumping, pouring,
         -------                                                                
dumping, emptying, deposit, discharge, leaching or migration.

        "Request to Extend" has the meaning set forth in Section 2.8(b).
         -----------------                                              

        "Required Banks" means, at any time, Banks having at least two-thirds of
         --------------                                                         
the aggregate amount of the Commitments or, if the Commitments shall have been
terminated, holding Notes evidencing at least two-thirds of the aggregate unpaid
principal amount of the Loans.

        "Requirements" means all present and future laws, statutes, codes,
         ------------                                                     
ordinances, orders, judgments, decrees, injunctions, rules, regulations and
requirements of every Governmental Authority having jurisdiction over any
Mortgaged Property and all restrictive covenants applicable to any Mortgaged
Property.

                                       25
<PAGE>
 
        "Secured Debt" means all Debt secured by a Lien on real property.
         ------------                                                    

        "Separate Parcel" means a Real Estate Asset that is a single, legally
         ---------------                                                     
subdivided, separately zoned parcel that can be legally transferred or conveyed
separate and distinct from any other Real Estate Asset without benefit of any
other Real Estate Asset.

        "Solvent" means, with respect to any Person, that the fair saleable 
         -------   
value of such Person's assets exceeds the Debts of such Person.

        "Subsidiary" means any corporation or other entity of which securities
         ----------    
or other ownership interests representing either (i) ordinary voting power to
elect a majority of the board of directors or other persons performing similar
functions or (ii) a majority of the economic interest therein, are at the time
directly or indirectly owned by the Borrower.

        "Term" has the meaning set forth in Section 2.9.
         ----                                           

        "Total Asset Value" means, the sum of (w) with respect to those Real
         -----------------                                                  
Property Assets owned for at least the two previous consecutive quarters, the
quotient of (i)  Annual EBITDA with respect thereto for the previous four (4)
consecutive quarters (or, if owned for only two or three quarters, the Annual
EBITDA for such period, annualized), including the quarter then ended, but less
reserves for Capital Expenditures of (A) $0.30 per square foot per annum for
each Real Property Asset that is an office property, and (B) $0.15 per square
foot per annum for each Real Property Asset that is an industrial property,
divided by (ii) the FMV Cap Rate, (x) with respect to those Real Property Assets
owned for less than the two previous consecutive quarters, the lesser of (i) the
quotient of Net Operating Cash Flow applicable to each such Real Property Asset,
calculated on an annualized basis, based upon (A) the actual amount of Net
Operating Cash Flow for the period of the Borrower's, the General Partner's or
their Subsidiary's  ownership of such Real Property Asset, less replacement
reserves of (1) $.30 per square foot per annum for each such Unencumbered Asset
Pool Property which is an office building and (2) $.15 per square foot per annum
for each 

                                       26
<PAGE>
 
such Unencumbered Asset Pool Property which is an industrial building, divided
by (B) the FMV Cap Rate, and (ii) the purchase price actually paid by the
Borrower, the General Partner or any of their Subsidiaries (as applicable) for
such Real Property, (y) with respect to Qualified Development Properties, 40% of
the book value thereof, and (z) Cash or Cash Equivalents of the Borrower, the
General Partner and their Subsidiaries as of the date of determination.

        "Total Debt Ratio" means the ratio, as of the date of determination, 
         ----------------  
of (i) the sum of (x) the Total Liabilities of the Borrower, the General Partner
and their Consolidated Subsidiaries and (y) the Borrower's and the General
Partner's pro rata share of the Total Liabilities of any Minority Holdings of
the Borrower or the General Partner to (ii) Total Asset Value.

        "Total Debt Service" means, as of the last day of each calendar quarter,
         ------------------   
an amount equal to the sum of (i) interest (whether accrued, paid or
capitalized) actually payable by Borrower on its Debt for the previous four
consecutive quarters including the quarter then ended, plus (ii) scheduled
payments of principal on such Debt, whether or not paid by the Borrower
(excluding balloon payments) for the previous four consecutive quarters
including the quarter then ended.

        "Total Liabilities" means the sum of the balance sheet amount of all 
         -----------------   
Debt of the Borrower, the General Partner and their Consolidated Subsidiaries
and all accounts payable and all other liabilities of such Person, all as
determined in accordance with GAAP.

        "Treasury Rate" means, as of any date, a rate equal to the annual 
         -------------    
yield to maturity on the U.S. Treasury Constant Maturity Series with a ten-year
maturity, as such yield is reported in Federal Reserve Statistical Release 
H.15--Selected Interest Rates, published most recently prior to the date the
applicable Treasury Rate is being determined. Such yield shall be determined by
straight line linear interpolation between the yields reported in Release H.15,
if necessary. In the event Release H.15 is no longer published, the Lead Agent
shall select, in its reasonable discretion, an alternate basis for the
determination of Treasury yield for U.S. 

                                       27
<PAGE>
 
Treasury Constant Maturity Series with ten-year maturities.

        "Unencumbered Asset Pool Net Operating Cash Flow" means, as of any date
         -----------------------------------------------     
of determination with respect to the Unencumbered Asset Pool Properties,
Property Income with respect to the Unencumbered Asset Pool Properties for the
previous four (4) consecutive quarters (except as provided below), including the
quarter then ended, but less (x) Property Expenses with respect to the
Unencumbered Asset Pool Properties for the previous four (4) consecutive
quarters (except as provided below), including the quarter then ended, and (y)
the greater of (i) Capital Expenditures which are not related to new
construction for the previous four (4) consecutive quarters, including the
quarter then ended, and (ii) reserves for Capital Expenditures of $.70 per
square foot per annum for each Unencumbered Asset Pool Property that is an
office property, and $.40 per square foot per annum for each Unencumbered Asset
Pool Property that is an industrial property. Notwithstanding the foregoing,
with respect to any Unencumbered Asset Pool Property owned by the Borrower, the
General Partner or any of their Consolidated Subsidiaries for a period of less
four (4) fiscal quarters, but more than one (1) fiscal quarter, Unencumbered
Asset Pool Net Operating Cash Flow shall be determined in a manner consistent
with the foregoing calculation utilizing annualized Property Income, Property
Expenses and Capital Expenditures (or, if greater, reserves for Capital
Expenditures) for the relevant period of the Borrower's, the General Partner's
or any of their Consolidated Subsidiaries' ownership of such Unencumbered Asset
Pool Property, provided such period shall be at least one fiscal quarter.

        "Unencumbered Asset Pool Properties" means, as of any date, the Real
         ----------------------------------                                 
Property Assets listed in Exhibit B attached hereto and made a part hereof, each
                          ---------                                             
of which is 100% owned in fee (or leasehold pursuant to a Financeable Ground
Lease in the case of assets listed on Exhibit C as leaseholds) (other than the
                                      ---------                               
Real Property Asset commonly known as Walnut Park Business Center, which is
87.744% owned by the Borrower, as tenant-in-common) by the Borrower, the General
Partner or any of their Consolidated Subsidiaries and each of which is not
subject to any Lien (other than Permitted Liens), subject to adjustment as set
forth herein, together with 

                                       28
<PAGE>
 
all Real Property Assets which have become part of the Unencumbered Asset Pool
Properties as of such date in accordance with Section 3.3.

        "Unencumbered Asset Pool Properties Value" means:
         ----------------------------------------        

        (i)  with respect to the Unencumbered Asset Pool Properties owned by the
Borrower, the General Partner or any of their Consolidated Subsidiaries for a
period of at least six (6) calendar months, the quotient of (x) the Unencumbered
Asset Pool Net Operating Cash Flow less replacement reserves of $.30 per square
foot per annum for each such Unencumbered Asset Pool Property which is an office
building and $.15 per square foot per annum for each such Unencumbered Asset
Pool Property which is an industrial building, divided by (y) the FMV Cap Rate,
and

        (ii)  with respect to Unencumbered Asset Pool Properties owned by the
Borrower, the General Partner or any of their Consolidated Subsidiaries for a
period of less than six (6) calendar months, the lesser of (A) the quotient of
(x) the Unencumbered Asset Pool Net Operating Cash Flow on an annualized basis
based upon the Unencumbered Asset Pool Net Operating Cash Flow for the period of
such Person's ownership of the Unencumbered Asset Pool Property in question less
replacement reserves of $.30 per square foot per annum for each such
Unencumbered Asset Pool Property which is an office building and $.15 per square
foot per annum for each such Unencumbered Asset Pool Property which is an
industrial building, divided by (y) the FMV Cap Rate and (B) the purchase price
actually paid by the Borrower, the General Partner or any of their Consolidated
Subsidiaries (as applicable) for such Unencumbered Asset Pool Property
(provided, however, that if any such Unencumbered Asset Pool Property shall have
been purchased as part of a portfolio of properties and no purchase price shall
have been specifically allocated thereto, then the purchase price therefore
shall be deemed to be equal to that percentage of the total purchase price for
such portfolio as is equal to the percentage of the total Net Operating Cash
Flow with respect to such portfolio that the Net Operating Cash Flow
attributable to the applicable Unencumbered Asset Pool Property bears.

                                       29
<PAGE>
 
        "Unfunded Liabilities" means, with respect to any Plan at any time, the
         --------------------                                                  
amount (if any) by which (i) the value of all benefit liabilities under such
Plan, determined on a plan termination basis using the assumptions prescribed by
the PBGC for purposes of Section 4044 of ERISA, exceeds (ii) the fair market
value of all Plan assets allocable to such liabilities under Title IV of ERISA
(excluding any accrued but unpaid contributions), all determined as of the then
most recent valuation date for such Plan, but only to the extent that such
excess represents a potential liability of a member of the ERISA Group to the
PBGC or any other Person under Title IV of ERISA.

        "United States" means the United States of America, including the States
         -------------                                                          
and the District of Columbia, but excluding its territories and possessions.

        "Unsecured Debt" means Debt not secured by a Lien on real property.
         --------------                                                    

        "Unsecured Debt Ratio" means, as of any date of determination, the 
         --------------------    
ratio of the Unencumbered Asset Pool Properties Value as of the date of
determination to the aggregate amount of Unsecured Debt of the Borrower, the
General Partner and their Consolidated Subsidiaries outstanding as of such date
of determination.

        "Unused Commitments" means an amount equal to all unadvanced funds 
         ------------------    
(other than unadvanced funds in connection with any construction loan) which any
third party is obligated to advance to the Borrower or otherwise, pursuant to
any Loan Document, written instrument or otherwise.

        Section 1.2.  Accounting Terms and Determinations .  Unless otherwise
                      -----------------------------------                    
specified herein, all accounting terms used herein shall be interpreted, all
accounting determinations hereunder shall be made, and all financial statements
required to be delivered hereunder shall be prepared in accordance with GAAP,
applied on a basis consistent (except for changes concurred in by the Borrower's
independent public accountants) with the most recent audited consolidated
financial statements of the Borrower delivered to the Lead Agent and the Banks;
                                                                               
provided that, if the Borrower notifies the Lead Agent and the Banks that the
- --------                                                                     
Borrower wishes to amend any 

                                       30
<PAGE>
 
covenant in Article V to eliminate the effect of any change in GAAP on the
operation of such covenant (or if the Lead Agent notifies the Borrower that the
Required Banks wish to amend Article V for such purpose), then the Borrower's
compliance with such covenant shall be determined on the basis of GAAP in effect
immediately before the relevant change in GAAP became effective, until either
such notice is withdrawn or such covenant is amended in a manner satisfactory to
the Borrower and the Required Banks.

        Section 1.3.  Types of Borrowings .  The term "Borrowing" denotes the
                      -------------------              ---------             
aggregation of Loans of one or more Banks to be made to the Borrower pursuant to
Article II on the same date, all of which Loans are of the same type (subject to
Article VIII) and, except in the case of Base Rate Loans, have the same Interest
Period.  Borrowings are classified for purposes of this Agreement either by
reference to the pricing of Loans comprising such Borrowing (e.g., a "Euro-
                                                             ----         
Dollar Borrowing" is a Borrowing comprised of Euro-Dollar Loans) or by reference
to the provisions of Article II under which participation therein is determined
(i.e., a "Committed Borrowing" is a Borrowing under Section 2.1 in which all
 ----                                                                       
Banks participate in proportion to their Commitments, while a "Money Market
Borrowing" is a Borrowing under Section 2.3).


                                  ARTICLE II

                                  THE CREDITS

Section 2.1.  Commitments to Lend .
              -------------------  

        (a) Each Bank severally agrees, on the terms and conditions set forth in
this Agreement, to make Committed Loans to the Borrower and participate in
Letters of Credit issued by the Fronting Bank on behalf of the Borrower pursuant
to this Section from time to time during the Term in amounts such that the
aggregate principal amount of Committed Loans by such Bank at any one time
outstanding together with such Bank's pro rata share of the Letter of Credit
                                      --- ----                    
Usage shall not exceed the amount of its Commitment. The aggregate amount of
Committed Loans to be made hereunder together with the Letter of Credit Usage
and outstanding Money Market 

                                       31
<PAGE>
 
Loans shall not exceed Three Hundred Fifty Million Dollars ($350,000,000) (the
"Loan Amount"). Each Borrowing under this subsection (a) shall be in an 
 -----------    
aggregate principal amount of at least $2,500,000, or an integral multiple of
$500,000 in excess thereof and shall be made from the several Banks ratably in
proportion to their respective Commitments. Subject to the limitations set forth
herein, any amounts repaid may be reborrowed. Notwithstanding anything to the
contrary, the number of new Borrowings shall be limited to ten (10) Borrowings
per month.

        (b) Notwithstanding anything in the preceding subparagraph (a) to the
contrary, the Loan Amount shall in no event exceed (and no Bank shall be
deemed to have committed to fund its pro rata share of an amount which
                                     --- ----                         
exceeds) an amount that would cause (A) the ratio of (i) Unencumbered Asset Pool
Net Operating Cash Flow to (ii) Pro-Forma Debt Service to be less than 2.0:1 or
(B) the Unsecured Debt Ratio to be less than 2.0:1 or (C) an amount which would
result in the violation of any provision of Section 5.8.

        Section 2.2   Notice of Committed Borrowing. 
                      -----------------------------   
(a) The Borrower shall give the Lead Agent notice (a "Notice of Committed 
                                                      -------------------
Borrowing") not later than 11:30 a.m. (New York City time) (x) one Domestic 
- ---------
Business Day before each Base Rate Borrowing or (y) the third Euro-Dollar
Business Day before each Euro-Dollar Borrowing, specifying:

             (1) the date of such Borrowing, which shall be a Domestic Business
        Day in the case of a Domestic Borrowing or a Euro-Dollar Business Day in
        the case of a Euro-Dollar Borrowing,

             (2) the aggregate amount of such Borrowing,

             (3) whether the Loans comprising such Borrowing are to be Base Rate
        Loans or Euro-Dollar Loans,

             (4) in the case of a Euro-Dollar Borrowing, the duration of the
        Interest Period applicable thereto, subject to the provisions of the
        definition of Interest Period,

                                       32
<PAGE>
 
             (5) the intended use for the proceeds of such Borrowing, and

             (6) that no Default or Event of Default has occurred or is
        continuing.

Notwithstanding the time frame set forth in clause (a)(x) above, in the event
that the Money Market Quotes submitted by the Banks pursuant to Section 2.3(c)
below are, in the aggregate, in an amount less than the principal amount
requested by the Borrower in the related Money Market Quote Request, then the
Borrower shall be permitted to give the Lead Agent notice of its intent to make
a Base Rate Borrowing, in the amount of the difference between accepted Money
Market Quotes and the principal amount requested by Borrower in the related
Money Market Quote Request, no later than 12:00 Noon (New York City time) on the
date of such Borrowing.

        (b) Borrower shall give the Lead Agent, and the designated Fronting
Bank, written notice in the event that it desires to have Letters of Credit
(each, a "Letter of Credit") issued hereunder no later than 10:00 a.m., New
          ----------------                                                 
York City time, at least four (4) Domestic Business Days prior to the date of
such issuance. Each such notice shall specify (i) the designated Fronting Bank,
(ii) the aggregate amount of the requested Letters of Credit, (iii) the
individual amount of each requested Letter of Credit and the number of Letters
of Credit to be issued, (iv) the date of such issuance (which shall be a
Domestic Business Day), (v) the name and address of the beneficiary, (vi) the
expiration date of the Letter of Credit (which in no event shall be later than
twelve (12) months after the issuance of such Letter of Credit or the Maturity
Date, whichever is earlier), (vii) the purpose and circumstances for which such
Letter of Credit is being issued and (viii) the terms upon which each such
Letter of Credit may be drawn down (which terms shall not leave any discretion
to Fronting Bank). Each such notice may be revoked telephonically by the
Borrower to the applicable Fronting Bank and the Lead Agent any time prior to
the date of issuance of the Letter of Credit by the applicable Fronting Bank,
provided such revocation is confirmed in writing by the Borrower to the Fronting
Bank and the Lead Agent within one (1) Domestic Business Day by facsimile. No
later than 10:00 a.m., New York City time, on the date that is 

                                       33
<PAGE>
 
four (4) Domestic Business Days prior to the date of issuance, the Borrower
shall specify a precise description of the documents and the verbatim text of
any certificate to be presented by the beneficiary of such Letter of Credit,
which if presented by such beneficiary prior to the expiration date of the
Letter of Credit would require the Fronting Bank to make a payment under the
Letter of Credit; provided, that Fronting Bank may, in its reasonable judgment,
                  --------
require changes in any such documents and certificates only in conformity with
changes in customary and commercially reasonable practice or law and, provided
                                                                      --------
further, that no Letter of Credit shall require payment against a conforming
- -------                                        
draft to be made thereunder on the following Domestic Business Day that such
draft is presented if such presentation is made later than 10:00 A.M. New York
City time (except that if the beneficiary of any Letter of Credit requests at
the time of the issuance of its Letter of Credit that payment be made on the
same Domestic Business Day against a conforming draft, such beneficiary shall be
entitled to such a same day draw, provided such draft is presented to the
applicable Fronting Bank no later than 10:00 A.M. New York City time and
provided further the Borrower shall have requested to the Fronting Bank and the
Lead Agent that such beneficiary shall be entitled to a same day draw). In
determining whether to pay on such Letter of Credit, the Fronting Bank shall be
responsible only to determine that the documents and certificates required to be
delivered under the Letter of Credit have been delivered and that they comply on
their face with the requirements of that Letter of Credit.

        Section 2.3.  Money Market Borrowings.
                      -----------------------  

           (a) The Money Market Option.  In addition to Committed Borrowings 
               -----------------------      
pursuant to Section 2.1, at such time as the Borrower's Credit Rating is an
Investment Grade Rating from at least two Rating Agencies, one of which shall be
S&P or Moody's, the Borrower may, as set forth in this Section 2.3, request the
Banks during the Term to make offers to make Money Market Loans to the Borrower,
not to exceed, at such time, the lesser of (i) the Committed Loans and (ii)
$150,000,000. The Banks may, but shall have no obligation to, make such offers
and the Borrower may, but shall have no obligation to, accept any such offers in
the manner set forth in this Section.

                                       34
<PAGE>
 
           (b) Money Market Quote Request.  When the Borrower wishes to request 
               -------------------------- 
offers to make Money Market Loans under this Section, it shall transmit to the
Lead Agent by telex or facsimile transmission a Money Market Quote Request
substantially in the form of Exhibit D hereto so as to be received not later
                             ---------                                
than 11:30 A.M. (New York City time) on (x) the fourth Euro-Dollar Business Day
prior to the date of Borrowing proposed therein, in the case of a LIBOR Auction,
or (y) the Domestic Business Day next preceding the date of Borrowing proposed
therein, in the case of an Absolute Rate Auction (or, in either case, such other
time or date as the Borrower and the Lead Agent shall have mutually agreed and
shall have notified to the Banks not later than the date of the Money Market
Quote Request for the first LIBOR Auction or Absolute Rate Auction for which
such change is to be effective) specifying:

                (i) the proposed date of Borrowing, which shall be a Euro-Dollar
        Business Day in the case of a LIBOR Auction or a Domestic Business Day
        in the case of an Absolute Rate Auction,

                (ii) the aggregate amount of such Borrowing, which shall be
        $10,000,000 or a larger multiple of $500,000,

                (iii) the duration of the Interest Period applicable thereto,
        subject to the provisions of the definition of Interest Period, and

                (iv) whether the Money Market Quotes requested are to set forth
        a Money Market Margin or a Money Market Absolute Rate.

The Borrower may request offers to make Money Market Loans for more than one
Interest Period in a single Money Market Quote Request.  No Money Market Quote
Request shall be given within thirty days (or such other number of days as the
Borrower and the Lead Agent may agree) of any other Money Market Quote Request.

           (c) Invitation for Money Market Quotes.  Promptly upon receipt of a 
               ----------------------------------  
Money Market Quote Request, the Lead Agent shall send to the Banks by telex or
facsimile transmission an Invitation for Money Market Quotes substantially in
the form of Exhibit F hereto, 
            ---------                                                

                                       35
<PAGE>
 
which shall constitute an invitation by the Borrower to each Bank to submit
Money Market Quotes offering to make the Money Market Loans to which such Money
Market Quote Request relates in accordance with this Section 2.3.

                (i) Submission and Contents of Money Market Quotes.  Each Bank 
                    ---------------------------------------------- 
        may submit a Money Market Quote containing an offer or offers to make
        Money Market Loans in response to any Invitation for Money Market
        Quotes. Each Money Market Quote must comply with the requirements of
        this subsection (d) and must be submitted to the Lead Agent by telex or
        facsimile transmission at its offices specified in or pursuant to
        Section 9.1 not later than (x) 10:00 A.M. (New York City time) on the
        third Euro-Dollar Business Day prior to the proposed date of Borrowing,
        in the case of a LIBOR Auction, or (y) 10:00 A.M. (New York City time)
        on the proposed date of Borrowing, in the case of an Absolute Rate
        Auction (or, in either case, such other time or date as the Borrower and
        the Lead Agent shall have mutually agreed and shall have notified to the
        Banks not later than the date of the Money Market Quote Request for the
        first LIBOR Auction or Absolute Rate Auction for which such change is to
        be effective); provided that Money Market Quotes submitted by the Lead
                       --------
        Agent (or any affiliate of the Lead Agent) in the capacity of a Bank may
        be submitted, and may only be submitted, if the Lead Agent or such
        affiliate notifies the Borrower of the terms of the offer or offers
        contained therein not later than thirty (30) minutes prior to the
        applicable deadline for the other Banks. Subject to Articles III and VI,
        any Money Market Quote so made shall be irrevocable except with the
        written consent of the Lead Agent given on the instructions of the
        Borrower. Such Money Market Loans may be funded by such Bank's
        Designated Lender (if any) as provided in Section 9.6(d); however such
        Bank shall not be required to specify in its Money Market Quote whether
        such Money Market Loans will be funded by such Designated Lender.

                (ii) Each Money Market Quote shall be in substantially the
        form of Exhibit E hereto and shall in any case specify:

                    (1) the proposed date of Borrowing,

                                       36
<PAGE>
 
                    (2) the principal amount of the Money Market Loan for which
        each such offer is being made, which principal amount (w) may be greater
        than or less than the Commitment of the quoting Bank, (x) must be
        $10,000,000 or a larger multiple of $500,000, (y) may not exceed the
        principal amount of Money Market Loans for which offers were requested
        and (z) may be subject to an aggregate limitation as to the principal
        amount of Money Market Loans for which offers being made by such quoting
        Bank may be accepted,

                    (3) in the case of a LIBOR Auction, the margin above or
        below the applicable London Interbank Offered Rate (the "Money Market
        Margin") offered for each such Money Market Loan, expressed as a
        percentage (specified to the nearest 1/10,000th of 1%) to be added to or
        subtracted from such base rate,

                    (4) in the case of an Absolute Rate Auction, the rate of
        interest per annum (specified to the nearest 1/10,000th of 1%) (the
        "Money Market Absolute Rate") offered for each such Money Market Loan,
        and

                    (5) the identity of the quoting Bank.

A Money Market Quote may set forth up to five separate offers by the quoting
Bank with respect to each Interest Period specified in the related Invitation
for Money Market Quotes.

                (iii) Any Money Market Quote shall be disregarded if it:

                    (1) is not substantially in conformity with Exhibit F 
                                                                ---------  
        hereto or does not specify all of the information required by subsection
        (d)(ii) above;

                    (2)contains qualifying, conditional or similar language;

                    (3) proposes terms other than or in addition to those set
        forth in the applicable Invitation for Money Market Quotes; or

                                       37
<PAGE>
 
                    (4) arrives after the time set forth in subsection (d)(i).

           (e) Notice to Borrower.  The Lead Agent shall promptly 
               ------------------  
notify the Borrower (x) with respect to each Money Market Quote submitted in
accordance with subsection (d), of the terms of such Money Market Quote and the
identity of the Bank submitting such Money Market Quote and (y) of any Money
Market Quote that amends, modifies or is otherwise inconsistent with a previous
Money Market Quote submitted by such Bank with respect to the same Money Market
Quote Request. Any such subsequent Money Market Quote shall be disregarded by
the Lead Agent unless such subsequent Money Market Quote is submitted solely to
correct a manifest error in such former Money Market Quote. The Lead Agent's
notice to the Borrower shall specify (A) the aggregate principal amount of Money
Market Loans for which offers have been received for each Interest Period
specified in the related Money Market Quote Request, (B) the respective
principal amounts and Money Market Margins or Money Market Absolute Rates, as
the case may be, so offered and (C) if applicable, limitations on the aggregate
principal amount of Money Market Loans for which offers in any single Money
Market Quote may be accepted.

           (f) Acceptance and Notice by Borrower.  Not later than 1:00 p.m.
               ---------------------------------                         
(New York City time) on (x) the third Euro-Dollar Business Day prior to the
proposed date of Borrowing, in the case of a LIBOR Auction, or (y) the proposed
date of Borrowing, in the case of an Absolute Rate Auction (or, in either case,
such other time or date as the Borrower and the Lead Agent shall have mutually
agreed and shall have notified to the Banks not later than the date of the Money
Market Quote Request for the first LIBOR Auction or Absolute Rate Auction for
which such change is to be effective), the Borrower shall notify the Lead Agent
of its acceptance or non-acceptance of the offers so notified to it pursuant to
subsection (e). In the case of acceptance, such notice (a "Notice of Money
                                                           ---------------
Market Borrowing") shall specify the aggregate principal amount of offers for
- ---------------- 
each Interest Period that are accepted. The Borrower may accept any Money Market
Quote in whole or in part; provided that:
                           --------      

                                       38
<PAGE>
 
                (i) the aggregate principal amount of each Money Market
        Borrowing may not exceed the applicable amount set forth in the related
        Money Market Quote Request;

                (ii) the principal amount of each Money Market Borrowing must be
        $10,000,000 or a larger multiple of $500,000;

                (iii) acceptance of offers may only be made on the basis of
        ascending Money Market Margins or Money Market Absolute Rates, as the
        case may be; and

                (iv) the Borrower may not accept any offer that is described in
        subsection (d)(iii) or that otherwise fails to comply with the
        requirements of this Agreement.

           (g) Allocation by Lead Agent.  If offers are made by two or more 
               ------------------------ 
Banks with the same Money Market Margins or Money Market Absolute Rates, as the
case may be, for a greater aggregate principal amount than the amount in respect
of which such offers are accepted for the related Interest Period, the principal
amount of Money Market Loans in respect of which such offers are accepted shall
be allocated by the Lead Agent among such Banks as nearly as possible (in
multiples of $500,000, as the Lead Agent may deem appropriate) in proportion to
the aggregate principal amounts of such offers. Determinations by the Lead Agent
of the amounts of Money Market Loans shall be conclusive in the absence of
manifest error.

           (h) Notification by Lead Agent.  Upon receipt of the Borrower's 
               --------------------------   
Notice of Money Market Borrowing in accordance with Section 2.3(f) hereof, the
Lead Agent shall, on the date such Notice of Money Market Borrowing is received
by the Lead Agent, notify each Bank of the principal amount of the Money Market
Borrowing accepted by the Borrower and of such Bank's share (if any) of such
Money Market Borrowing and such Notice of Money Market Borrowing shall not
thereafter be revocable by the Borrower. A Bank who is notified that it has been
selected to make a Money Market Loan may designate its Designated Lender (if
any) to fund such Money Market Loan on its behalf, as described in Section
9.6(d). Any 

                                       39
<PAGE>
 
Designated Lender which funds a Money Market Loan shall on and after the time of
such funding become the obligee under such Money Market Loan and be entitled to
receive payment thereof when due. No Bank shall be relieved of its obligation to
fund a Money Market Loan, and no Designated Lender shall assume such obligation,
prior to the time the applicable Money Market Loan is funded.

        Section 2.4. Notice to Banks; Funding of Loans.
                     ---------------------------------  

           (a) Upon receipt of a Notice of Committed Borrowing, the Lead Agent
shall notify each Bank on the same day as it receives the Notice of Committed
Borrowing of the contents thereof and of such Bank's share of such Borrowing and
such Notice of Committed Borrowing shall not thereafter be revocable by the
Borrower.

           (b) Not later than 2:00 P.M. (New York City time) on the date of each
Committed Borrowing, each Bank shall make available its share of such Committed
Borrowing, in Federal or other funds immediately available in New York City, to
the Lead Agent at its address referred to in Section 9.1. The Lead Agent will
make the funds so received from the Banks available to the Borrower at the Lead
Agent's aforesaid address. If the Borrower has requested the issuance of a
Letter of Credit, no later than 12:00 Noon (New York City time) on the date of
such issuance as indicated in the notice delivered pursuant to Section 2.2(b),
the Fronting Bank shall issue such Letter of Credit in the amount so requested
and deliver the same to the Borrower with a copy thereof to the Lead Agent. At
the request of any Bank, the Lead Agent promptly shall deliver copies thereof to
such Bank. Immediately upon the issuance of each Letter of Credit by the
Fronting Bank, such Fronting Bank shall be deemed to have sold and transferred
to each other Bank, and each such other Bank shall be deemed, and hereby agrees,
to have irrevocably and unconditionally purchased and received from the Fronting
Bank, without recourse or warranty, an undivided interest and a participation in
such Letter of Credit, any drawing thereunder, and the obligations of the
Borrower hereunder with respect thereto, and any security therefor or guaranty
pertaining thereto, in an amount equal to such Bank's ratable share thereof
(based upon the ratio its Commitment bears to the aggregate of all Commitments).
Upon any change 

                                       40
<PAGE>
 
in any of the Commitments in accordance herewith, there shall be an automatic
adjustment to such participations to reflect such changed shares. The Fronting
Bank shall have the primary obligation to fund any and all draws made with
respect to such Letter of Credit notwithstanding any failure of a participating
Bank to fund its ratable share of any such draw. The Lead Agent will instruct
the Fronting Bank to make such Letter of Credit available to the Borrower and
the Fronting Bank shall make such Letter of Credit available to the Borrower at
the Borrower's aforesaid address or at such address in the United States as
Borrower shall request on the date of the Borrowing.

           (c) Unless the Lead Agent shall have received notice from a Bank
prior to the date of any Borrowing that such Bank will not make available to the
Lead Agent such Bank's share of such Borrowing, the Lead Agent may assume that
such Bank has made such share available to the Lead Agent on the date of such
Borrowing in accordance with subsection (b) of this Section 2.4 and the Lead
Agent may, in reliance upon such assumption, make available to the Borrower on
such date a corresponding amount. If and to the extent that such Bank shall not
have so made such share available to the Lead Agent, such Bank and the Borrower
severally agree to repay to the Lead Agent forthwith on demand such
corresponding amount together with interest thereon, for each day from the date
such amount is made available to the Borrower until the date such amount is
repaid to the Lead Agent, at (i) in the case of the Borrower, a rate per annum
equal to the higher of the Federal Funds Rate and the interest rate applicable
thereto pursuant to Section 2.7 and (ii) in the case of such Bank, the Federal
Funds Rate. If such Bank shall repay to the Lead Agent such corresponding
amount, such amount so repaid shall constitute such Bank's Loan included in such
Borrowing for purposes of this Agreement.

        Section 2.5. Notes .
                     -----  

           (a) The Loans shall be evidenced by the Notes, each of which shall be
payable to the order of each Bank for the account of its Applicable Lending
Office in an amount equal to each such Bank's Commitment.

                                       41
<PAGE>
 
           (b) Each Bank may, by notice to the Borrower and the Lead Agent,
request that its Loans of a particular type be evidenced by a separate Note in
an amount equal to the aggregate unpaid principal amount of such Loans. Each
such Note shall be in substantially the form of Exhibit A hereto, with
                                                ---------             
appropriate modifications to reflect the fact that it evidences solely
Loans of the relevant type.  Each reference in this Agreement to the "Note"
                                                                      ---- 
of such Bank shall be deemed to refer to and include any or all of such
Notes, as the context may require.

           (c) Upon receipt of each Bank's Note, the Lead Agent shall forward
such Note to such Bank. Each Bank shall record the date, amount, type and
maturity of each Loan made by it and the date and amount of each payment of
principal made by the Borrower with respect thereto, and may, if such Bank so
elects in connection with any transfer or enforcement of its Note, endorse on
the schedule forming a part thereof appropriate notations to evidence the
foregoing information with respect to each such Loan then outstanding; provided
                                                                       --------
that the failure of any Bank to make any such recordation or endorsement shall
not affect the obligations of the Borrower hereunder or under the Notes. Each
Bank is hereby irrevocably authorized by the Borrower so to endorse its Note and
to attach to and make a part of its Note a continuation of any such schedule as
and when required.

           (d) There shall be no more than ten (10) Euro-Dollar Borrowings
outstanding at any one time pursuant to this Agreement.

        Section 2.6. Maturity of Loans.  The Loans shall mature, and the
                     -----------------                                   
principal amount thereof shall be due and payable, on the Maturity Date.

        Section 2.7. Interest Rates.
                     --------------  

           (a) Each Base Rate Loan shall bear interest on the outstanding
principal amount thereof, for each day from the date such Loan is made until it
becomes due, at a rate per annum equal to the sum of twenty-five (25) basis
points plus the Base Rate for such day. Such interest shall be payable for each
Interest Period on the last day thereof.

                                       42
<PAGE>
 
           (b) Each Euro-Dollar Loan shall bear interest on the outstanding
principal amount thereof, for each day during the Interest Period applicable
thereto, at a rate per annum equal to the sum of the Applicable Margin plus the
Adjusted London Interbank Offered Rate for such day .

Such interest shall be payable for each Interest Period on the last day thereof
and, if such Interest Period is longer than three months, at intervals of three
months after the first day thereof.

        "Adjusted London Interbank Offered Rate" applicable to any Interest 
         --------------------------------------  
Period means a rate per annum equal to the quotient obtained (rounded upward, if
necessary, to the next higher 1/100 of 1%) by dividing (i) the applicable London
Interbank Offered Rate by (ii) 1.00 minus the Euro-Dollar Reserve Percentage.

        "Euro-Dollar Reserve Percentage" means for any day that percentage
         ------------------------------                                   
(expressed as a decimal) which is in effect on such day, as prescribed by the
Board of Governors of the Federal Reserve System (or any successor) for
determining the maximum reserve requirement for a member bank of the Federal
Reserve System in New York City with deposits exceeding five billion dollars in
respect of "Eurocurrency liabilities" (or in respect of any other category of
liabilities which includes deposits by reference to which the interest rate on
Euro-Dollar Loans is determined or any category of extensions of credit or other
assets which includes loans by a non-United States office of any Bank to United
States residents). The Adjusted London Interbank Offered Rate shall be adjusted
automatically on and as of the effective date of any change in the Euro-Dollar
Reserve Percentage.

        "London Interbank Offered Rate" applicable to any Interest Period 
         -----------------------------    
means the average (rounded upward, if necessary, to the next higher 1/16 of 1%)
of the respective rates per annum at which deposits in dollars are offered to
the Reference Bank in the London interbank market at approximately 11:00 a.m.
(London time) two Euro-Dollar Business Days before the first day of such
Interest Period in an amount approximately equal to the principal amount of the
Euro-Dollar Loan of such Reference Bank to which such Interest Period is to
apply 

                                       43
<PAGE>
 
and for a period of time comparable to such Interest Period.

           (c) Subject to Section 8.1, each Money Market LIBOR Loan shall bear
interest on the outstanding principal amount thereof, for the Interest Period
applicable thereto, at a rate per annum equal to the sum of the London Interbank
Offered Rate for such Interest Period (determined in accordance with Section
2.7(b) as if the related Money Market LIBOR Borrowing were a Committed Euro-
Dollar Borrowing) plus (or minus) the Money Market Margin quoted by the Bank
making such Loan in accordance with Section 2.3. Each Money Market Absolute Rate
Loan shall bear interest on the outstanding principal amount thereof, for the
Interest Period applicable thereto, at a rate per annum equal to the Money
Market Absolute Rate quoted by the Bank making such Loan in accordance with
Section 2.3. Such interest shall be payable for each Interest Period on the last
day thereof and, if such Interest Period is longer than ninety days, at
intervals of ninety days after the first day thereof.

           (d) In the event that, and for so long as, any Event of Default shall
have occurred and be continuing, the outstanding principal amount of the Loans,
and, to the extent permitted by law, overdue interest in respect of all Loans,
shall bear interest at the annual rate of the sum of the Prime Rate and four
percent (4%).

           (e) The Lead Agent shall determine each interest rate applicable to 
the Loans hereunder. The Lead Agent shall give prompt notice to the Borrower and
the Banks of each rate of interest so determined, and its determination thereof
shall be conclusive in the absence of manifest error.

           (f) The Reference Bank agrees to use its best efforts to furnish
quotations to the Lead Agent as contemplated by this Section. If the Reference
Bank does not furnish a timely quotation, the provisions of Section 8.1 shall
apply.

        Section 2.8. Fees .
                     ----  

           (a) Commitment/Facility Fee.  During the Term, the Borrower shall 
               -----------------------   
pay to the Lead Agent for the account of the Banks ratably in proportion to
their 

                                       44
<PAGE>
 
respective Commitments, a commitment fee on the daily average undrawn and
uncancelled Commitments in any given quarter determined as follows:

                (i) prior to the Adjustment Date, the Borrower shall pay to the
        Lead Agent for the account of the Banks ratably in proportion to their
        respective Commitments, a commitment fee on the daily average undrawn
        and uncancelled Commitments in any given quarter at the respective
        percentages per annum based upon the range into which the Total Debt
        Ratio then falls in accordance with the following table:

<TABLE>
<CAPTION>
- --------------------------------------------------------------
      Total Debt Ratio           Applicable Commitment Fee 
                                        (% per annum)
- --------------------------------------------------------------
      <S>                                <C>
less than 25%                         0.15%
- --------------------------------------------------------------
equal to or greater than 25%          0.20%
but less than 55%
- --------------------------------------------------------------
</TABLE>

                (ii) from and after the Adjustment Date, the Borrower shall pay
        to the Lead Agent for the account of the Banks ratably in proportion to
        their respective Commitments, a facility fee on the daily average
        Commitments in any given quarter at the respective percentages per annum
        based upon the Borrower's Credit Rating in accordance with the following
        table:

<TABLE>
<CAPTION>
- ---------------------------------------------------------------
  Borrower's Credit Rating      Applicable Facility Fee 
                                      (% per annum)
- ---------------------------------------------------------------
<S>                                    <C>
BBB+/Baa1                             0.15%
- --------------------------------------------------------------- 
BBB/Baa2                              0.20%
- --------------------------------------------------------------- 
BBB-/Baa3                             0.20%
- --------------------------------------------------------------
Below Investment Grade                0.25%
Rating or no rating                                       
- --------------------------------------------------------------
</TABLE>

The commitment/facility fee shall be payable quarterly, in arrears, on each
January 1, April 1, July 1, and October 1 during the Term and any extensions
thereof.  Any change in the Borrower's Credit Rating causing it to move into a
different range on the table shall effect an immediate change in the applicable
percentage per annum.  

                                       45
<PAGE>
 
In the event that the Borrower's (or the General Partner's) Credit Rating is
such that the Rating Agencies' ratings are split between a higher and a lower
rating, the applicable percentage per annum shall be based upon the lower of
such two (2) Credit Ratings. In the event that Borrower (or, as applicable, the
General Partner) receives more than two (2) credit ratings and such credit
ratings are not equivalent, the applicable fee shall be determined by the lower
of the two (2) highest ratings, provided that each of said two (2) highest
ratings shall be Investment Grade Ratings and at least one of which shall be an
Investment Grade Rating from S&P or Moody's.

          (b)  Letter of Credit Fee. During the Term, the Borrower shall pay to
               --------------------
     the Lead Agent, for the account of the Banks in proportion to their
     interests in respect of undrawn issued Letters of Credit, a fee (a "Letter
                                                                         ------
     of Credit Fee") in an amount, provided that no Event of Default shall have
     -------------
     occurred and be continuing, equal to a rate per annum equal to the
     Applicable Margin with respect to Euro-Dollar Loans on the daily average of
     such issued and undrawn Letters of Credit, which fee shall be payable, in
     arrears, on each January 1, April 1, July 1 and October 1 during the Term.
     From the occurrence, and during the continuance, of an Event of Default,
     such fee shall be increased to be equal to four percent (4%) per annum on
     the daily average of such issued and undrawn Letters of Credit.

          (c)  Fronting Bank Fee. The Borrower shall pay any Fronting Bank, for
               -----------------
     its own account, a fee (a "Fronting Bank Fee") at a rate per annum equal to
                                -----------------
     .15% of the issued and undrawn amount of such Letter of Credit, which fee
     shall be in addition to and not in lieu of, the Letter of Credit Fee. The
     Fronting Bank Fee shall be payable in arrears on each January 1, April 1,
     July 1 and October 1 during the Term.

          (d)  Extension Fee. Within one week of the notification by the Lead
               -------------
     Agent to the Borrower that a Request to Extend has been accepted pursuant
     to Section 2.9(b), the Borrower shall pay to the Lead Agent for the account
     of the Banks ratably in proportion to their Commitments an extension fee of
     .15% of the Commitments then outstanding.

                                       46
<PAGE>
 
          (e)  Fees Non-Refundable. All fees set forth in this Section 2.8 shall
               -------------------
     be deemed to have been earned on the date payment is due in accordance with
     the provisions hereof and shall be non-refundable. The obligation of the
     Borrower to pay such fees in accordance with the provisions hereof shall be
     binding upon the Borrower and shall inure to the benefit of the Lead Agent
     and the Banks regardless of whether any Loans are actually made.

          Section 2.9. Mandatory Termination.  (a)  The term (the "Term") of the
                       ---------------------                       ----         
     Commitments shall terminate and expire, and the Borrower shall return or
     cause to be returned all Letters of Credit to the Fronting Bank, on
     February 24, 2000 (the "Maturity Date").
                             -------------   

          (b)  The Borrower may request a one-year extension of the Maturity
     Date by delivering a written request therefor to the Lead Agent not more
     than eight months or less than six months prior to the Maturity Date (a
     "Request to Extend"). The Lead Agent shall notify the Banks of the receipt
      -----------------
     of such request and each Bank shall give notice in writing to the Lead
     Agent not less than five months prior to the Maturity Date of such Bank's
     acceptance or rejection of such request. If all the Banks shall have
     notified the Lead Agent on or prior to the date which is five months prior
     to the Maturity Date that they accept such request, the Maturity Date shall
     be extended for one year. If any Bank shall not have notified the Lead
     Agent on or prior to the date which is five months prior to the Maturity
     Date that it accepts such request, the Maturity Date shall not be extended.
     The Lead Agent shall notify the Borrower whether the Request to Extend has
     been accepted or rejected as well as which Bank or Banks rejected the
     Borrower's Request to Extend.

          Section 2.10.  Mandatory Prepayment.
                         --------------------  

          (a)  In the event that an Unencumbered Asset Pool Property (or any
     Separate Parcel that originally formed a part of an Unencumbered Asset Pool
     Property) is sold, transferred or released from the restrictions of Section
     5.16 hereof, the Borrower shall, simultaneously with such sale, transfer or
     release, prepay the Loans in an amount equal to 100% of the net proceeds of
     such sale or transfer, in the event of a sale or transfer, or such lesser
     amount as shall be required for the Borrower to

                                       47
<PAGE>
 
     remain in compliance with this Agreement, in the event of such a sale,
     transfer or release. Notwithstanding the foregoing, a simultaneous like-
     kind exchange under Section 1031 of the Internal Revenue Code will not be
     subject to the provisions of this Section 2.10(a), provided that the
     exchanged property has qualified as a New Acquisition and any cash "boot"
     associated therewith shall be applied to prepayment of the Loans. Sale of
     an Unencumbered Asset Pool Property (or any Separate Parcel that originally
     formed a part of a Unencumbered Asset Pool Property) in violation of this
     Section 2.10 shall constitute an Event of Default.

          (b)  Simultaneously with the closing of any sale of common shares of
     beneficial interest, preferred shares of beneficial interest, partnership
     interests, limited liability company interests, or other ownership or
     equity interests in the Borrower or the General Partner, the Borrower
     shall, simultaneously with such sale, prepay the Loans in an amount equal
     to 100% of the Net Offering Proceeds. Notwithstanding the foregoing,
     however, in the event that the Net Offering Proceeds in connection with any
     individual offering shall be less than $20,000,000, and the Borrower
     anticipates reinvesting the same in Real Property Assets within fifteen
     (15) days after receipt thereof, the Borrower may retain such funds,
     provided, however, that if the Borrower shall not in fact so reinvest such
     funds in Real Property Assets within such fifteen (15) day period, the
     Borrower shall immediately apply the same in repayment of the Loans.

          (c)  in the event that the Unsecured Debt Ratio is not maintained as
     of the last day of a calendar quarter, either (i) the Borrower will add a
     Real Property Asset to the Unencumbered Asset Pool Properties in accordance
     with this Agreement which, on a pro forma basis (i.e. the Unsecured Debt
                                     ---------        ---    
     Ratio shall be recalculated to include such Real Property Asset as though
     the same had been an Unencumbered Asset Pool Property for the entire
     applicable period) would result in compliance with the Unsecured Debt
     Ratio, or (ii) the Borrower shall prepay to the Lead Agent, for the account
     of the Banks, an amount necessary to cause the Unsecured Debt Ratio to be
     in compliance within ninety (90) days of the date on which the Unsecured
     Debt Ratio failed to be maintained. Failure by the Borrower to comply with
     the

                                       48
<PAGE>
 
     Unsecured Debt Ratio within ninety (90) days of the date of such non-
     compliance shall be an Event of Default.

          Section 2.11.  Optional Prepayments.
                         --------------------  

          (a)  The Borrower may, upon at least one Domestic Business Day's
     notice to the Lead Agent, prepay to the Lead Agent, for the account of the
     Banks, any Base Rate Borrowing in whole at any time, or from time to time
     in part in amounts aggregating One Million Dollars ($1,000,000), or an
     integral multiple of One Million Dollars ($1,000,000) in excess thereof or,
     if less, the outstanding principal balance, by paying the principal amount
     to be prepaid together with accrued interest thereon to the date of
     prepayment. Each such optional prepayment shall be applied to prepay
     ratably the Loans of the several Banks included in such Borrowing.

          (b)  Except as provided in Section 8.2, the Borrower may not prepay
     all or any portion of the principal amount of any Euro-Dollar Loan prior to
     the maturity thereof unless the Borrower shall also pay any applicable
     expenses pursuant to Section 2.13. Any such prepayment shall be upon at
     least three (3) Euro-Dollar Business Days' notice to the Lead Agent. Any
     notice of prepayment delivered pursuant to this Section 2.11(b) shall set
     forth the amount of such prepayment which is applicable to any Loan made
     for working capital purposes. Each such optional prepayment shall be in the
     amounts set forth in Section 2.11(a) above and shall be applied to prepay
     ratably the Loans of the Banks included.

          (c)  The Borrower may not prepay any Money Market Loan.

          (d)  The Borrower may, upon at least one (1) Domestic Business Day's
     notice to the Lead Agent (by 11:00 a.m New York time on such Domestic
     Business Day), reimburse the Lead Agent for the benefit of the Fronting
     Bank for the amount of any drawing under a Letter of Credit in whole or in
     part in any amount.

          (e)  The Borrower may at any time return any undrawn Letter of Credit
     to the Fronting Bank in whole, but not in part, and the Fronting Bank shall
     give the Lead Agent and each of the Banks notice of such return.

                                       49
<PAGE>
 
          (f)  The Borrower may at any time and from time to time cancel all or
     any part of the Commitments in amounts aggregating One Million Dollars
     ($1,000,000), or an integral multiple of One Million Dollars ($1,000,000)
     in excess thereof, by the delivery to the Lead Agent and the Banks of a
     notice of cancellation upon at least three (3) Domestic Business Days'
     notice to Lead Agent and the Banks, whereupon, all or such portion of the
     Commitments shall terminate as to the Banks, pro rata on the date set forth
                                                  --------
     in such notice of cancellation, and, if there are any Loans then
     outstanding in an aggregate amount which exceeds the aggregate Commitments
     (after giving effect to any such reduction), the Borrower shall prepay to
     the Lead Agent, for the account of the Banks, all or such portion of Loans
     outstanding on such date in accordance with the requirements of Sections
     2.11(a) and (b). In no event shall the Borrower be permitted to cancel
     Commitments for which a Letter of Credit has been issued and is outstanding
     unless the Borrower returns (or causes to be returned) such Letter of
     Credit to the Fronting Bank. The Borrower shall be permitted to designate
     in its notice of cancellation which Loans, if any, are to be prepaid.

          (g)  Upon receipt of a notice of prepayment or cancellation or a
     return of a Letter of Credit pursuant to this Section, the Lead Agent shall
     promptly, and in any event within one (1) Domestic Business Day, notify
     each Bank of the contents thereof and of such Bank's ratable share (if any)
     of such prepayment or cancellation and such notice shall not thereafter be
     revocable by the Borrower.

          (h)  Any amounts so prepaid pursuant to this Section 2.11 may be
     reborrowed subject to the other terms of this Agreement. In the event that
     the Borrower elects to cancel all or any portion of the Commitments
     pursuant to Section 2.11(c) hereof, such amounts may not be reborrowed.

          Section 2.12.  General Provisions as to Payments.
                         ---------------------------------  

          (a)  The Borrower shall make each payment of principal of, and
     interest on, the Loans and of fees hereunder, not later than 12:00 Noon
     (New York City

                                       50
<PAGE>
 
     time) on the date when due, in Federal or other funds immediately available
     in New York City, to the Lead Agent at its address referred to in Section
     9.1. The Lead Agent will distribute to each Bank its ratable share of each
     such payment received by the Lead Agent for the account of the Banks on the
     same day as received by the Lead Agent if received by the Lead Agent by
     1:00 p.m. (New York City time), or, if received by the Lead Agent after
     1:00 p.m. (New York City time), on the immediately following Domestic
     Business Day. If the Lead Agent shall fail to distribute to a Bank its
     ratable share of a payment on the same day it is received or the
     immediately following Domestic Business Day, as applicable in accordance
     with the immediately preceding sentence, the Lead Agent shall pay to such
     Bank the interest accrued on such payment at the Federal Funds Rate,
     commencing on the day the Lead Agent should have made the payment to such
     Bank and ending on the day prior to the date payment is actually made.
     Whenever any payment of principal of, or interest on, the Base Rate Loans
     or of fees shall be due on a day which is not a Domestic Business Day, the
     date for payment thereof shall be extended to the next succeeding Domestic
     Business Day. Whenever any payment of principal of, or interest on, the
     Euro-Dollar Loans shall be due on a day which is not a Euro-Dollar Business
     Day, the date for payment thereof shall be extended to the next succeeding
     Euro-Dollar Business Day unless such Euro-Dollar Business Day falls in
     another calendar month, in which case the date for payment thereof shall be
     the next preceding Euro-Dollar Business Day. If the date for any payment of
     principal is extended by operation of law or otherwise, interest thereon
     shall be payable for such extended time.

          (b)  Unless the Lead Agent shall have received notice from the
     Borrower prior to the date on which any payment is due to the Banks
     hereunder that the Borrower will not make such payment in full, the Lead
     Agent may assume that the Borrower has made such payment in full to the
     Lead Agent on such date and the Lead Agent may, in reliance upon such
     assumption, cause to be distributed to each Bank on such due date an amount
     equal to the amount then due such Bank. If and to the extent that the
     Borrower shall not have so made such payment, each Bank shall repay to the
     Lead Agent forthwith on demand such amount distributed to such Bank
     together with interest thereon, for each day from the date such

                                       51
<PAGE>
 
amount is distributed to such Bank until the date such Bank repays such amount
to the Lead Agent, at the Federal Funds Rate.

          Section 2.13.  Funding Losses.  If the Borrower makes any payment of
                         --------------  
principal with respect to any Euro-Dollar Loan (pursuant to Article II, VI or
VIII or otherwise, and specifically including any payments made pursuant to
Sections 2.10 or 2.11) on any day other than the last day of the Interest Period
applicable thereto, or if the Borrower fails to borrow any Euro-Dollar Loans,
after notice has been given to any Bank in accordance with Section 2.4(a), the
Borrower shall reimburse each Bank within 15 days after demand for any resulting
loss or expense incurred by it (or by an existing Participant in the related
Loan; provided that no Participant shall be entitled to receive more than the
Bank with respect to which such Participant is a Participant would be entitled
to receive under this Section 2.13), including (without limitation) any loss
incurred in obtaining, liquidating or employing deposits from third parties, but
excluding loss of margin for the period after any such payment or failure to
borrow, provided that such Bank shall have delivered to the Borrower a
        --------                                                      
certificate as to the amount of such loss or expense and the calculation
thereof, which certificate shall be conclusive in the absence of manifest error.

          Section 2.14.  Computation of Interest and Fees. Interest based on the
                         --------------------------------
Prime Rate hereunder shall be computed on the basis of a year of 365 days (or
366 days in a leap year) and paid for the actual number of days elapsed
(including the first day but excluding the last day). All other interest and
fees shall be computed on the basis of a year of 360 days and paid for the
actual number of days elapsed (including the first day but excluding the last
day).

          Section 2.15.  Method of Electing Interest Rates.
                         ---------------------------------  

          (a)  The Loans included in each Borrowing shall bear interest
initially at the type of rate specified by the Borrower in the applicable Notice
of Committed Borrowing. Thereafter, the Borrower may from time to time elect to
change or continue the type of interest

                                       52
<PAGE>
 
rate borne by each Group of Loans (subject in each case to the provisions of
Article VIII), as follows:

               (i)  if such Loans are Base Rate Loans, the Borrower may elect to
          convert such Loans to Euro-Dollar Loans as of any Euro-Dollar Business
          Day;

               (ii) if such Loans are Euro-Dollar Loans, the Borrower may elect
          to convert such Loans to Base Rate Loans or elect to continue such
          Loans as Euro-Dollar Loans for an additional Interest Period, in each
          case effective on the last day of the then current Interest Period
          applicable to such Loans.

Each such election shall be made by delivering a notice (a "Notice of Interest
                                                            ------------------
Rate Election") to the Lead Agent at least three (3) Euro-Dollar Business Days
- -------------                                                                 
before the conversion or continuation selected in such notice is to be effective
(unless the relevant Loans are to be continued as Base Rate Loans, in which case
such notice shall be delivered to the Lead Agent no later than 12:00 Noon (New
York City time) at least one (1) Domestic Business Day before such continuation
is to be effective).  A Notice of Interest Rate Election may, if it so
specifies, apply to only a portion of the aggregate principal amount of the
relevant Group of Loans; provided that (i) such portion is allocated ratably
                         --------                                           
among the Loans comprising such Group, (ii) the portion to which such notice
applies, and the remaining portion to which it does not apply, are each
$1,000,000 or any larger multiple of $1,000,000, (iii) there shall be no more
than ten (10) Borrowings comprised of Euro-Dollar Loans outstanding at any time
under this Agreement, (iv) no Loan may be continued as, or converted into, a
Euro-Dollar Loan when any Event of Default has occurred and is continuing, and
(v) no Interest Period shall extend beyond the Maturity Date.

          (b)  Each Notice of Interest Rate Election shall specify:

               (i)   the Group of Loans (or portion thereof) to which such
          notice applies;

                                       53
<PAGE>
 
               (ii)  the date on which the conversion or continuation selected
          in such notice is to be effective, which shall comply with the
          applicable clause of subsection (a) above;

               (iii) if the Loans comprising such Group are to be converted, the
          new type of Loans and, if such new Loans are Euro-Dollar Loans, the
          duration of the initial Interest Period applicable thereto; and

               (iv)  if such Loans are to be continued as Euro-Dollar Loans for
          an additional Interest Period, the duration of such additional
          Interest Period.

Each Interest Period specified in a Notice of Interest Rate Election shall
comply with the provisions of the definition of Interest Period.

          (c) Upon receipt of a Notice of Interest Rate Election from the
Borrower pursuant to subsection (a) above, the Lead Agent shall notify each Bank
on the same day as it receives such Notice of Interest Rate Election of the
contents thereof and such notice shall not thereafter be revocable by the
Borrower. If the Borrower fails to deliver a timely Notice of Interest Rate
Election to the Lead Agent for any Group of Euro-Dollar Loans, such Loans shall
be converted into Base Rate Loans on the last day of the then current Interest
Period applicable thereto.

          Section 2.16. Letters of Credit.   (a)  Subject to the terms contained
                        -----------------
in this Agreement and the other Loan Documents, upon the receipt of a notice in
accordance with Section 2.2(b) requesting the issuance of a Letter of Credit,
the Fronting Bank shall issue a Letter of Credit or Letters of Credit in such
form as is reasonably acceptable to the Borrower in an amount or amounts equal
to the amount or amounts requested by the Borrower.

          (b)  Each Letter of Credit shall be issued in the minimum amount of
One Million Dollars ($1,000,000).

                                       54
<PAGE>
 
          (c)  The Letter of Credit Usage shall be no more than Twenty-Five
Million Dollars ($25,000,000) at any one time.

          (d)  There shall be no more than three (3) Letters of Credit
outstanding at any one time.

          (e)  In the event of any request for a drawing under any Letter of
Credit by the beneficiary thereunder, the Fronting Bank shall endeavor to notify
the Borrower and the Lead Agent (and the Lead Agent shall endeavor to notify
each Bank thereof) on or before the date on which the Fronting Bank intends to
honor such drawing, and, except as provided in this subsection (e), the Borrower
shall reimburse the Fronting Bank, in immediately available funds, on the same
day on which such drawing is honored in an amount equal to the amount of such
drawing. Notwithstanding anything contained herein to the contrary, however,
unless the Borrower shall have notified the Lead Agent, and the Fronting Bank
prior to 11:00 a.m. (New York time) on the Domestic Business Day immediately
prior to the date of such drawing that the Borrower intends to reimburse the
Fronting Bank for the amount of such drawing with funds other than the proceeds
of the Loans, the Borrower shall be deemed to have timely given a Notice of
Committed Borrowing pursuant to Section 2.2 to the Lead Agent, requesting a
Borrowing of Base Rate Loans on the date on which such drawing is honored and in
an amount equal to the amount of such drawing. Each Bank (other than the
Fronting Bank) shall, in accordance with Section 2.4(b), make available its
share of such Borrowing to the Lead Agent, the proceeds of which shall be
applied directly by the Lead Agent to reimburse the Fronting Bank for the amount
of such draw. In the event that any such Bank fails to make available to the
Fronting Bank the amount of such Bank's participation on the date of a drawing,
the Fronting Bank shall be entitled to recover such amount on demand from such
Bank together with interest at the Federal Funds Rate commencing on the date
such drawing is honored.

          (f)  If, after the date hereof, any change in any law or regulation or
in the interpretation thereof by any court or administrative or governmental
authority charged with the administration thereof shall either (i) impose,
modify or deem applicable any reserve, special

                                       55
<PAGE>
 
deposit or similar requirement against letters of credit issued by, or assets
held by, or deposits in or for the account of, or participations in any letter
of credit, upon any Bank (including the Fronting Bank) or (ii) impose on any
Bank any other condition regarding this Agreement or such Bank (including the
Fronting Bank) as it pertains to the Letters of Credit or any participation
therein and the result of any event referred to in the preceding clause (i) or
(ii) shall be to increase, by an amount deemed by the Fronting Bank or such Bank
to be material, the cost to the Fronting Bank or any Bank of issuing or
maintaining any Letter of Credit or participating therein then the Borrower
shall pay to the Fronting Bank or such Bank, within 15 days after written demand
by such Bank (with a copy to the Lead Agent), which demand shall be accompanied
by a certificate showing, in reasonable detail, the calculation of such amount
or amounts, such additional amounts as shall be required to compensate the
Fronting Bank or such Bank for such increased costs or reduction in amounts
received or receivable hereunder.

          (g)  The Borrower hereby agrees to protect, indemnify, pay and save
the Fronting Bank harmless from and against any and all claims, demands,
liabilities, damages, losses, costs, charges and expenses (including reasonable
attorneys' fees and disbursements) which the Fronting Bank may incur or be
subject to as a result of (i) the issuance of the Letters of Credit, other than
as a result of the gross negligence or wilful misconduct of the Fronting Bank or
(ii) the failure of the Fronting Bank to honor a drawing under any Letter of
Credit as a result of any act or omission, whether rightful or wrongful, of any
present or future de jure or de facto government or Governmental Authority
                  -- ----    -- ----- 
(collectively, "Governmental Acts"), other than as a result of the gross
                ----------------- 
negligence or wilful misconduct of the Fronting Bank. As between the Borrower
and the Fronting Bank, the Borrower assumes all risks of the acts and omissions
of, or misuses of, the Letters of Credit issued by the Fronting Bank, by the
beneficiaries of such Letters of Credit. In furtherance and not in limitation of
the foregoing, the Fronting Bank shall not be responsible (i) for the form,
validity, sufficiency, accuracy, genuineness or legal effect of any document
submitted by any party in connection with the application for and issuance of
such Letters of Credit, even if it should in

                                       56
<PAGE>
 
fact prove to be in any or all respects invalid, insufficient, inaccurate,
fraudulent or forged; (ii) for the validity or insufficiency of any instrument
transferring or assigning or purporting to transfer or assign any such Letter of
Credit or the rights or benefits thereunder or proceeds thereof, in whole or in
part, which may prove to be invalid or ineffective for any reason; (iii) for
failure of the beneficiary of any such Letter of Credit to comply fully with
conditions required in order to draw upon such Letter of Credit; (iv) for
errors, omissions, interruptions or delays in transmission or delivery of any
message, by mail, cable, telegraph, telex, facsimile transmission, or otherwise;
(v) for errors in interpretation of any technical terms; (vi) for any loss or
delay in the transmission or otherwise of any documents required in order to
make a drawing under any such Letter of Credit or of the proceeds thereof; (vii)
for the misapplication by the beneficiary of any such Letter of Credit of the
proceeds of such Letter of Credit; and (viii) for any consequence arising from
causes beyond the control of the Fronting Bank, including any Government Acts,
in each case other than as a result of the gross negligence or willful
misconduct of the Fronting Bank. None of the above shall affect, impair or
prevent the vesting of the Fronting Bank's rights and powers hereunder. In
furtherance and extension and not in limitation of the specific provisions
hereinabove set forth, any action taken or omitted by the Fronting Bank under or
in connection with the Letters of Credit issued by it or the related
certificates, if taken or omitted in good faith, shall not put the Fronting Bank
under any resulting liability to the Borrower.

          (h)  If the Fronting Bank or the Lead Agent is required at any time,
pursuant to any bankruptcy, insolvency, liquidation or reorganization law or
otherwise, to return to the Borrower any reimbursement by the Borrower of any
drawing under any Letter of Credit, each Bank shall pay to the Fronting Bank or
the Lead Agent, as the case may be, its share of such payment, but without
interest thereon unless the Fronting Bank or the Lead Agent is required to pay
interest on such amounts to the person recovering such payment, in which case
with interest thereon, computed at the same rate, and on the same basis, as the
interest that the Fronting Bank or the Lead Agent is required to pay.

                                       57
<PAGE>
 
          Section 2.17.  Letter of Credit Usage Absolute.  The obligations of
                         -------------------------------
the Borrower under this Agreement in respect of any Letter of Credit shall be
unconditional and irrevocable, and shall be paid strictly in accordance with the
terms of this Agreement (as the same may be amended from time to time) and any
Letter of Credit Documents (as hereinafter defined) under all circumstances,
including, without limitation, to the extent permitted by law, the following
circumstances:

          (a)  any lack of validity or enforceability of any Letter of Credit or
any other agreement or instrument relating thereto (collectively, the "Letter of
                                                                       ---------
Credit Documents") or any Loan Document;
- ----------------

          (b)  any change in the time, manner or place of payment of, or in any
other term of, all or any of the obligations of the Borrower in respect of the
Letters of Credit or any other amendment or waiver of or any consent by the
Borrower to departure from all or any of the Letter of Credit Documents or any
Loan Document; provided, that the Fronting Bank shall not consent to any such
               --------
change or amendment unless previously consented to in writing by the Borrower;

          (c)  any exchange, release or non-perfection of any collateral, or any
release or amendment or waiver of or consent to departure from any guaranty, for
all or any of the obligations of the Borrower in respect of the Letters of
Credit;

          (d) the existence of any claim, set-off, defense or other right that
the Borrower may have at any time against any beneficiary or any transferee of a
Letter of Credit (or any Persons for whom any such beneficiary or any such
transferee may be acting), the Lead Agent, the Fronting Bank or any Bank (other
than a defense based on the gross negligence or wilful misconduct of the Lead
Agent, the Fronting Bank or such Bank) or any other Person, whether in
connection with the Loan Documents, the transactions contemplated hereby or by
the Letters of Credit Documents or any unrelated transaction;

          (e)  any draft or any other document presented under or in connection
with any Letter of Credit or other Loan Document proving to be forged,
fraudulent,

                                       58
<PAGE>
 
invalid or insufficient in any respect or any statement therein being untrue or
inaccurate in any respect; provided, that payment by the Fronting Bank under
                           --------
such Letter of Credit against presentation of such draft or document shall not
have constituted gross negligence or wilful misconduct of the Fronting Bank;

          (f)  payment by the Fronting Bank against presentation of a draft or
certificate that does not comply with the terms of the Letter of Credit;
provided, that such payment shall not have constituted gross negligence or
- --------
wilful misconduct of the Fronting Bank; and

          (g)  any other circumstance or happening whatsoever other than the
payment in full of all obligations hereunder in respect of any Letter of Credit
or any agreement or instrument relating to any Letter of Credit, whether or not
similar to any of the foregoing, that might otherwise constitute a defense
available to, or a discharge of, the Borrower; provided, that such other
                                               --------
circumstance or happening shall not have been the result of gross negligence or
wilful misconduct of the Fronting Bank.


                                  ARTICLE III

                                  CONDITIONS

          Section 3.1.  Closing.  The closing hereunder shall occur on the date
                        -------                                                 
(the "Closing Date") when each of the following conditions is satisfied (or
      ------------                                                         
waived by the Lead Agent, such waiver to be evidenced by the continuation or
funding after the date hereof of Loans and notice of such waiver to be given to
the Banks by the Lead Agent), each document to be dated the Closing Date unless
otherwise indicated:

          (a)  the Borrower shall have executed and delivered to the Lead Agent
a Note for the account of each Bank dated on or before the Closing Date
complying with the provisions of Section 2.5;

          (b)  the Borrower shall have executed and delivered to the Lead Agent
a duly executed original of this Agreement;

                                       59
<PAGE>
 
          (c)  the General Partner shall have executed and delivered to the Lead
Agent a duly executed original of the Guaranty

          (d)  the Lead Agent shall have received an opinion of Latham & Watkins
counsel for the Borrower and the General Partner, acceptable to the Lead Agent,
the Banks and their counsel;

          (e)  the Lead Agent shall have received all documents the Lead Agent
may reasonably request relating to the existence of the Borrower, the General
Partner, the authority for and the validity of this Agreement and the other Loan
Documents, and any other matters relevant hereto, all in form and substance
reasonably satisfactory to the Lead Agent. Such documentation shall include,
without limitation, the articles of incorporation and by-laws or the partnership
agreement and limited partnership certificate, as applicable, of the Borrower
and the General Partner, as amended, modified or supplemented to the Closing
Date, each certified to be true, correct and complete by a senior officer of the
Borrower as of a date not more than forty-five (45) days prior to the Closing
Date, together with a good standing certificate from the Secretary of State (or
the equivalent thereof) of the State of Delaware with respect to the Borrower
and of the State of Maryland with respect to the General Partner, and a good
standing certificate from the Secretary of State (or the equivalent thereof) of
each other State in which the Borrower and the General Partner is required to be
qualified to transact business, each to be dated not more than forty-five (45)
days prior to the Closing Date;

          (f)  the Lead Agent shall have received all certificates, agreements
and other documents and papers referred to in this Section 3.1 and Section 3.2,
unless otherwise specified, in sufficient counterparts, satisfactory in form and
substance to the Lead Agent in its sole discretion;

          (g)  the Borrower and the General Partner shall have taken all actions
required to authorize the execution and delivery of this Agreement and the other
Loan Documents and the performance thereof by the Borrower and the General
Partner;

                                       60
<PAGE>
 
          (h)  the Lead Agent and the Banks shall have received an unaudited
consolidated balance sheet and income statement of the Borrower for the fiscal
quarter ended June 30, 1998;

          (i)  the Lead Agent shall be satisfied that neither the Borrower nor
the General Partner is subject to any present or contingent environmental
liability which could reasonably be expected to have a Material Adverse Effect;

          (j)  the Lead Agent shall have received wire transfer instructions in
connection with the Loans to be made on the Closing Date;

          (k)  the Lead Agent shall have received, for its and any other Bank's
account, all fees due and payable pursuant to Section 2.8 hereof on or before
the Closing Date, and the reasonable fees and expenses accrued through the
Closing Date of Skadden, Arps, Slate, Meagher & Flom LLP;

          (l)  the Lead Agent shall have received copies of all consents,
licenses and approvals, if any, required in connection with the execution,
delivery and performance by the Borrower, and the validity and enforceability
against the Borrower, of the Loan Documents, or in connection with any of the
transactions contemplated thereby to occur on or prior to the Closing Date, and
such consents, licenses and approvals shall be in full force and effect;

          (m)  the representations and warranties of the Borrower contained in
this Agreement shall be true and correct in all material respects on and as of
the Closing Date both before and after giving effect to the making of any Loans;

          (n)  receipt by the Lead Agent and the Banks of a certificate of the
chief financial officer or the chief accounting officer of the Borrower
certifying that the Borrower is in compliance with all covenants of the Borrower
contained in this Agreement, including, without limitation, the requirements of
Section 5.8, as of the Closing Date; and

                                       61
<PAGE>
 
          (o)  the General Partner shall intend to continue to qualify as a real
estate investment trust under the Internal Revenue Code.

The Lead Agent shall promptly notify the Borrower and the Banks of the Closing
Date, and such notice shall be conclusive and binding on all parties hereto.

          Section 3.2.  Borrowings.  The obligation of any Bank to make a Loan
                        ----------
on the occasion of any Borrowing or to participate in any Letter of Credit
issued by the Fronting Bank and the obligation of the Fronting Bank to issue a
Letter of Credit on the occasion of any Borrowing is subject to the satisfaction
of the following conditions:

          (a)  the Closing Date shall have occurred on or prior to       , 1998;

          (b)  receipt by the Lead Agent of a Notice of Borrowing as required by
Section 2.2 or 2.3;

          (c)  immediately after such Borrowing, the Outstanding Balance will
not exceed the aggregate amount of the Commitments and with respect to each
Bank, such Bank's pro rata portion of the Committed Loans and Letter of Credit
Usage will not exceed such Bank's Commitment;

          (d)  immediately before and after such Borrowing, no Default or Event 
Default shall have occurred and be continuing both before and after giving
effect to the making of such Loans;

          (e)  the representations and warranties of the Borrower contained in
this Agreement (other than representations and warranties which speak as of a
specific date) shall be true and correct in all material respects on and as of
the date of such Borrowing both before and after giving effect to the making of
such Loans;

          (f)  no law or regulation shall have been adopted, no order, judgment
or decree of any governmental authority shall have been issued, and no
litigation shall be pending or threatened, which does or, with respect to any
threatened litigation, seeks to enjoin, prohibit or restrain,
the making or repayment of the 

                                       62
<PAGE>
 
Loans, the issuance of any Letter of Credit or any participations therein or the
consummation of the transactions contemplated hereby; and

          (g)  no event, act or condition shall have occurred after the Closing
Date which, in the reasonable judgment of the Lead Agent or the Required Banks,
as the case may be, has had or is likely to have a Material Adverse Effect.

Each Borrowing hereunder shall be deemed to be a representation and warranty by
the Borrower on the date of such Borrowing as to the facts specified in clauses
(c) through (g) of this Section (except that with respect to clause (f), such
representation and warranty shall be deemed to be limited to laws, regulations,
orders, judgments, decrees and litigation affecting the Borrower and not solely
the Banks).

          Section 3.3. New Acquisitions and Additional Real Property Assets.
                       ----------------------------------------------------  

          (a)  Any New Acquisition or Real Property Asset desired by the
Borrower to be included as a Unencumbered Asset Pool Property, prior to the
Adjustment Date, will require the approval of the Required Banks. The Borrower
shall submit to the Lead Agent the materials set forth below (the "Due Diligence
                                                                   -------------
Package") relating to each New Acquisition or Real Property Asset that the
- -------
Borrower desires to be added to the Unencumbered Asset Pool Properties. The Due
Diligence Package shall include (i) a description of the Real Property Asset,
(ii) two years of historical cash flow operating statements, if available, (iii)
five years of cash flow projections (including capital expenditures), (iv) the
credit history of each existing tenant which occupies more than 15% of such Real
Property Asset, (v) a map and site plan, including an existing survey of the
property dated not more than twelve (12) months prior to such submission, (vi)
copies of all lease agreements and abstracts thereof with each existing tenant
which occupies more than 15% of such Real Property Asset, (vii) a satisfactory
environmental report indicating that (A) the Real Property Asset complies with
all Environmental Laws in all material respects, (B) is free of all Material of
Environmental Concern in all material respects and (C) is not subject to any
Environmental Claim,

                                       63
<PAGE>
 
 (viii) an engineer's inspection report satisfactory to the Lead Agent
 (provided, however, the Lead Agent shall not deem an engineer's inspection
 report satisfactory unless the Required Banks shall find such engineer's
 inspection report satisfactory), (ix) a title report, (ix) a final investment
 memorandum prepared by the Borrower in connection with the Real Property Asset,
 and (x) a statement with respect to the purchase price of such Real Property
 Asset or, if such Real Property Asset was purchased as part of a portfolio and
 there was no allocation of purchase price, of the purchase price of the
 portfolio of Real Property Assets of which it formed a part. The Borrower shall
 permit the Lead Agent at all reasonable times and upon reasonable prior notice
 to make an inspection of such New Acquisition or Real Property Asset.

          (b)  The Borrower shall distribute a copy of each item constituting
the Due Diligence Package by overnight mail to each of the Banks for their
review and approval. Failure to respond to the Lead Agent in writing by any Bank
within ten (10) Domestic Business Days after receipt of the Due Diligence
Package shall be deemed to be an approval by such Bank of such New Acquisition
or Real Property Asset for inclusion as a Unencumbered Asset Pool Property.


                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

          In order to induce the Lead Agent and each of the other Banks which
may become a party to this Agreement to make the Loans, the Borrower makes the
following representations and warranties as of the date hereof. Such
representations and warranties shall survive the effectiveness of this
Agreement, the execution and delivery of the other Loan Documents and the making
of the Loans.

          Section 4.1.  Existence and Power.  The Borrower is duly organized,
                        -------------------                                   
validly existing and in good standing as a limited partnership under the laws of
the State of Delaware and has all powers and all material governmental licenses,
authorizations, consents and approvals required to own its property and assets
and

                                       64
<PAGE>
 
carry on its business as now conducted or as it presently proposes to conduct
and has been duly qualified and is in good standing in every jurisdiction in
which the failure to be so qualified and/or in good standing is likely to have a
Material Adverse Effect.

          Section 4.2.  Power and Authority.  The Borrower has the
                        -------------------
organizational power and authority to execute, deliver and carry out the terms
and provisions of each of the Loan Documents to which it is a party and has
taken all necessary action to authorize the execution and delivery on behalf of
the Borrower and the performance by the Borrower of such Loan Documents. The
Borrower has duly executed and delivered each Loan Document to which it is a
party, and each such Loan Document constitutes the legal, valid and binding
obligation of the Borrower, enforceable in accordance with its terms, except as
enforceability may be limited by applicable insolvency, bankruptcy or other laws
affecting creditors rights generally, or general principles of equity, whether
such enforceability is considered in a proceeding in equity or at law.

          Section 4.3.  No Violation.  Neither the execution, delivery or
                        ------------                                      
performance by or on behalf of the Borrower of the Loan Documents, nor
compliance by the Borrower with the terms and provisions thereof nor the
consummation of the transactions contemplated by the Loan Documents, (i) will
contravene any applicable provision of any law, statute, rule, regulation,
order, writ, injunction or decree of any court or governmental instrumentality
applicable to Borrower or (ii) will conflict with or result in any breach of,
any of the terms, covenants, conditions or provisions of, or constitute a
default under, or result in the creation or imposition of (or the obligation to
create or impose) any Lien upon any of the property or assets of the Borrower
pursuant to the terms of any material indenture, mortgage, deed of trust, or
other agreement or other instrument to which the Borrower (or of any partnership
of which the Borrower is a partner) is a party or by which it or any of its
property or assets is bound or to which it is subject or (iii) will cause a
default by the Borrower under any organizational document of any Subsidiary, or
cause a default under the General Partner's articles of incorporation or by-
laws.

                                       65
<PAGE>
 
          Section 4.4.  Financial Information.
                        ---------------------  

          (a)  The unaudited consolidated balance sheets of the Borrower and the
General Partner as of June 30, 1998, when delivered to Lead Agent and to the
Banks shall fairly present, in conformity with GAAP, the consolidated financial
position of the Borrower and the General Partner as of such date and their
consolidated results of operations for such fiscal year.

          (b)  Since June 30, 1998, (i) there has been no material adverse
change in the business, financial position or results of operations of the
Borrower or the General Partner and (ii) except as previously disclosed to the
Lead Agent and to the Banks, neither the Borrower nor the General Partner has
incurred any material indebtedness or guaranty.

          Section 4.5.  Litigation.
                        ----------  

          (a)  There is no action, suit or proceeding pending against, or to the
knowledge of the Borrower, threatened against or affecting, (i) the Borrower,
the General Partner or any of their Subsidiaries, (ii) the Loan Documents or any
of the transactions contemplated by the Loan Documents or (iii) any of their
assets, in any case before any court or arbitrator or any governmental body,
agency or official which could reasonably be expected to have a Material Adverse
Effect or which in any manner draws into question the validity of this Agreement
or the other Loan Documents.

          (b)  There are no final nonappealable judgments or decrees in an
aggregate amount of One Million Dollars ($1,000,000) or more entered by a court
or courts of competent jurisdiction against the Borrower or the General Partner
(other than any judgment as to which, and only to the extent, a reputable
insurance company has acknowledged coverage of such claim in writing).

          Section 4.6.  Compliance with ERISA.
                        ---------------------  

          (a)  Except as previously disclosed to the Lead Agent in writing, each
member of the ERISA Group has fulfilled its obligations under the minimum
funding standards of ERISA and the Internal Revenue Code with

                                       66
<PAGE>
 
respect to each Plan and is in compliance in all material respects with the
presently applicable provisions of ERISA and the Internal Revenue Code with
respect to each Plan. No member of the ERISA Group has (i) sought a waiver of
the minimum funding standard under Section 412 of the Internal Revenue Code in
respect of any Plan, (ii) failed to make any contribution or payment to any Plan
or Multiemployer Plan or in respect of any Benefit Arrangement, or made any
amendment to any Plan or Benefit Arrangement, which has resulted or could result
in the imposition of a Lien or the posting of a bond or other security under
ERISA or the Internal Revenue Code or (iii) incurred any liability under Title
IV of ERISA other than a liability to the PBGC for premiums under Section 4007
of ERISA.

          (b)  Except for each "employee benefit plan" (as such term is defined
in Section 3(3) of ERISA) that is maintained, or contributed to, by one or more
members of the ERISA Group, no member of the ERISA Group is a "party in
interest" (as such term is defined in Section 3(14) of ERISA or a "disqualified
person" (as such term is defined in Section 4975(e)(2) of the Code) with respect
to any funded employee benefit plan and none of the assets of any such plans
have been invested in a manner that would cause the transactions contemplated by
the Loan Documents to constitute a nonexempt prohibited transaction (as such
term is defined in Section 4975 of the Code or Section 406 of ERISA).

          Section 4.7.  Environmental Compliance.  To the best of Borrower's
                        ------------------------                             
knowledge, except as set forth in the Phase I environmental report(s) delivered
to and accepted by the Lead Agent with respect to each of the Unencumbered Asset
Pool Properties (as supplemented or amended, the "Environmental Reports"), (i)
                                                  ---------------------       
there are in effect all Environmental Approvals which are required to be
obtained under all Environmental Laws with respect to the Property, except for
such Environmental Approvals the absence of which would not have a Material
Adverse Effect, (ii) the Borrower is in compliance in all material respects with
the terms and conditions of all such Environmental Approvals, and is also in
compliance in all material respects with all other Environmental Laws or any
plan, order, decree, judgment, injunction, notice or demand letter issued,
entered or approved thereunder,

                                       67
<PAGE>
 
except to the extent failure to comply would not have a Material Adverse Effect.

          Except as set forth in the Environmental Reports or otherwise
disclosed to the Lead Agent as of the Closing Date, to Borrower's actual
knowledge:

               (i)    There are no Environmental Claims or investigations
          pending or threatened by any Governmental Authority with respect to
          any alleged failure by the Borrower to have any Environmental Approval
          required in connection with the conduct of the business of the
          Borrower on any of the Unencumbered Asset Pool Properties, or with
          respect to any generation, treatment, storage, recycling,
          transportation, Release or disposal of any Material of Environmental
          Concern generated by the Borrower or any lessee on any of the
          Unencumbered Asset Pool Properties;

               (ii)   No Material of Environmental Concern has been Released at
          the Property to an extent that it may reasonably be expected to have a
          Material Adverse Effect;

               (iii)  No PCB (in amounts or concentrations which exceed those
          set by applicable Environmental Laws) is present at any of the
          Unencumbered Asset Pool Properties;

               (iv)   No friable asbestos is present at any of the Unencumbered
          Asset Pool Properties;

               (v)    There are no underground storage tanks for Material of
          Environmental Concern, active or abandoned, at any of the Unencumbered
          Asset Pool Properties;

               (vi)  No Environmental Claims have been filed with a Governmental
          Authority with respect to any of the Unencumbered Asset Pool
          Properties, and none of the Unencumbered Asset Pool Properties is
          listed or proposed for listing on the National Priority List
          promulgated pursuant to CERCLA, on CERCLIS or on any similar state
          list of sites requiring investigation or clean-up;

                                       68
<PAGE>
 
               (vii)  There are no Liens arising under or pursuant to any
          Environmental Laws on any of the Unencumbered Asset Pool Properties,
          and no government actions have been taken or are in process which
          could subject any of the Unencumbered Asset Pool Properties to such
          Liens; and

               (viii) There have been no environmental investigations, studies,
          audits, tests, reviews or other analyses conducted by, or which are in
          the possession of, the Borrower in relation to any of the Unencumbered
          Asset Pool Properties which have not been made available to the Lead
          Agent.

          Section 4.8.  Taxes.  The initial tax year of the Borrower for federal
                        ----- 
income tax purposes was 1996.  The federal income tax returns of the Borrower
and its Consolidated Subsidiaries for the fiscal year ended December 31, 1996
have been filed.  The Borrower and its Subsidiaries have filed all United States
Federal income tax returns and all other material tax returns which are required
to be filed by them and have paid all taxes due pursuant to such returns or
pursuant to any assessment received by the Borrower or any Subsidiary except
those being contested in good faith.  The charges, accruals and reserves on the
books of the Borrower and its Subsidiaries in respect of taxes or other
governmental charges are, in the opinion of the Borrower, adequate.

          Section 4.9.  Full Disclosure.  All information heretofore furnished
                        ---------------
by the Borrower to the Lead Agent or any Bank for purposes of or in connection
with this Agreement or any transaction contemplated hereby is true and accurate
in all material respects on the date as of which such information is stated or
certified. The Borrower has disclosed to the Banks in writing any and all facts
known to the Borrower which materially and adversely affect or are likely to
materially and adversely affect (to the extent the Borrower can now reasonably
foresee), the business, operations or financial condition of the Borrower
considered as one enterprise or the ability of the Borrower to perform its
obligations under this Agreement or the other Loan Documents.

          Section 4.10.  Solvency.  On the Closing Date and after giving effect
                         --------
to the transactions contemplated

                                       69
<PAGE>
 
by the Loan Documents occurring on the Closing Date, the Borrower is Solvent.

          Section 4.11.  Use of Proceeds; Margin Regulations.  All proceeds of
                         -----------------------------------
the Loans will be used by the Borrower only in accordance with the provisions
hereof. No part of the proceeds of any Loan will be used by the Borrower to
purchase or carry any Margin Stock or to extend credit to others for the purpose
of purchasing or carrying any Margin Stock. Neither the making of any Loan nor
the use of the proceeds thereof will violate or be inconsistent with the
provisions of Regulations G, T, U or X of the Federal Reserve Board.

          Section 4.12.  Governmental Approvals.  No order, consent, approval,
                         ----------------------                                
license, authorization, or validation of, or filing, recording or registration
with, or exemption by, any governmental or public body or authority, or any
subdivision thereof, is required to authorize, or is required in connection with
the execution, delivery and performance of any Loan Document or the consummation
of any of the transactions contemplated thereby other than those that have
already been duly made or obtained and remain in full force and effect.

          Section 4.13.  Investment Company Act; Public Utility Holding Company
                         ------------------------------------------------------
Act. The Borrower is not (x) an "investment company" or a company "controlled"
- ---                              ------------------                ---------- 
by an "investment company", within the meaning of the Investment Company Act of
       ------------------ 
1940, as amended, (y) a "holding company" or a "subsidiary company" of a
                         ---------------        ------------------
"holding company" or an "affiliate" of either a "holding company" or a
 ---------------         ---------               ---------------
"subsidiary company" within the meaning of the Public Utility Holding Company
 ------------------
Act of 1935, as amended, or (z) subject to any other federal or state law or
regulation which purports to restrict or regulate its ability to borrow money.

          Section 4.14.  Closing Date Transactions.  On the Closing Date and
                         -------------------------                           
immediately prior to or concurrently with the making of the Loans, the
transactions (other than the making of the Loans) intended to be consummated on
the Closing Date will have been consummated in accordance with all applicable
laws.  On or prior to the Closing Date, all consents and approvals of, and
filings and registrations with, and all other actions by, any Person required in
order to make or

                                       70
<PAGE>
 
consummate such transactions have been obtained, given, filed or taken and are
in full force and effect.

          Section 4.15.  Representations and Warranties in Loan Documents.  All
                         ------------------------------------------------       
representations and warranties made by the Borrower in the Loan Documents are
true and correct in all material respects.

          Section 4.16.  Patents, Trademarks, etc.  The Borrower has obtained
                         ------------------------
and holds in full force and effect all patents, trademarks, service marks, trade
names, copyrights and other such rights, free from burdensome restrictions,
which are necessary for the operation of its business as presently conducted,
the impairment of which is likely to have a Material Adverse Effect. To the
Borrower's knowledge, no material product, process, method, substance, part or
other material presently sold by or employed by the Borrower in connection with
such business infringes any patent, trademark, service mark, trade name,
copyright, license or other such right owned by any other Person. There is not
pending or, to the Borrower's knowledge, threatened any claim or litigation
against or affecting the Borrower contesting its right to sell or use any such
product, process, method, substance, part or other material.

          Section 4.17.  No Default.  No Default or Event of Default exists
                         ----------
under or with respect to any Loan Document. The Borrower is not in default in
any material respect beyond any applicable grace period under or with respect to
any other material agreement, instrument or undertaking to which it is a party
or by which it or any of its property is bound in any respect, the existence of
which default is likely (to the extent that the Borrower can now reasonably
foresee) to result in a Material Adverse Effect.

          Section 4.18.  Licenses, etc.   The Borrower has obtained and holds in
                         --------------                                         
full force and effect, all franchises, licenses, permits, certificates,
authorizations, qualifications, accreditations, easements, rights of way and
other consents and approvals which are necessary for the operation of its
businesses as presently conducted, the absence of which is likely (to the extent
that the Borrower can now reasonably foresee) to have a Material Adverse Effect.

                                       71
<PAGE>
 
          Section 4.19.  Compliance With Law.  The Borrower is in compliance
                         -------------------
with all laws, rules, regulations, orders, judgments, writs and decrees,
including, without limitation, all building and zoning ordinances and codes, the
failure to comply with which is likely (to the extent that the Borrower can now
reasonably foresee) to have a Material Adverse Effect.

          Section 4.20.  No Burdensome Restrictions.  The Borrower is not a 
                         -------------------------- 
party to any agreement or instrument or subject to any other obligation or any
charter or corporate or partnership restriction, as the case may be, which,
individually or in the aggregate, is likely (to the extent that the Borrower can
now reasonably foresee) to have a Material Adverse Effect.

          Section 4.21.  Brokers' Fees.  The Borrower has not dealt with any 
                         ------------- 
broker or finder with respect to the transactions contemplated by the Loan
Documents (except with respect to the acquisition or disposition of Real
Property Assets) or otherwise in connection with this Agreement, and the
Borrower has not done any acts, had any negotiations or conversation, or made
any agreements or promises which will in any way create or give rise to any
obligation or liability for the payment by the Borrower of any brokerage fee,
charge, commission or other compensation to any party with respect to the
transactions contemplated by the Loan Documents (except with respect to the
acquisition or disposition of Real Property Assets), other than the fees payable
hereunder.

          Section 4.22.  Labor Matters.  Except as set forth on Schedule 4.22
                         -------------                          -------------
attached hereto and made a part hereof, there are no collective bargaining
agreements or Multiemployer Plans covering the employees of the Borrower and the
Borrower has not suffered any strikes, walkouts, work stoppages or other
material labor difficulty within the last five (5) years.

          Section 4.23.  Organizational Documents .  The documents delivered
                         ------------------------                           
pursuant to Section 3.1(c) constitute, as of the Closing Date, all of the
organizational documents (together with all amendments and modifications
thereof) of the Borrower.  The Borrower represents that it has delivered to the
Lead Agent true, correct and complete copies of each of the documents set forth
in this Section 4.23.

                                       72
<PAGE>
 
          Section 4.24.  Principal Offices.  The principal office, chief 
                         ----------------- 
executive office and principal place of business of the Borrower is 2250 East
Imperial Highway, Suite 1200, El Segundo, California 90245.

          Section 4.25.  REIT Status.  For the fiscal year ended December 31, 
                         -----------
1998, the General Partner will qualify, and the General Partner intends to
continue to qualify as a real estate investment trust under the Code.

          Section 4.26.  Ownership of Property.  The Borrower owns fee simple 
                         ---------------------   
title to or a ground leasehold interest in each of the Unencumbered Asset Pool
Properties, other than the Real Property Asset commonly known as Walnut Park
Business Center, in which the Borrower owns an 87.744% tenancy-in-common
interest.

          Section 4.27.  Insurance.  The Borrower currently maintains insurance
                         ---------
at 100% replacement cost insurance coverage in respect of each of the Real
Property Assets, as well as comprehensive general liability insurance (including
"builders' risk") against claims for personal, and bodily injury and/or death,
to one or more persons, or property damage, as well as workers' compensation
insurance, in each case with respect to the Real Property Assets with insurers
having an A.M. Best policyholders' rating of not less than A-VIII in amounts
that prudent owner of assets such as the Real Property Assets would maintain.

          Section 4.28.  Year 2000 Compliance.  The Borrower has conducted a
                         --------------------                               
comprehensive review and assessment of its computer applications and has made
such inquiry as it determined to be advisable of its key suppliers, vendors and
customers or prospects with respect to the "year 2000 problem" (i.e., the risk
                                                                ----          
that computer applications may not be able to properly perform date-sensitive
functions after December 31, 1999) and, based on that review and inquiry,
Borrower believes that the year 2000 problem will not result in a Material
Adverse Effect.

                                       73
<PAGE>
 
                                   ARTICLE V

                      AFFIRMATIVE AND NEGATIVE COVENANTS

     The Borrower covenants and agrees that, so long as any Bank has any
Commitment hereunder or any Obligations remain unpaid:

          Section 5.1.  Information.  The Borrower will deliver to the Lead 
                        -----------
Agent and to each of the Banks:

          (a) as soon as available and in any event within 105 days after the
end of each fiscal year of the Borrower, an audited consolidated balance sheet
of the Borrower as of the end of such fiscal year and the related consolidated
statements of cash flow and operations for such fiscal year, setting forth in
each case in comparative form the figures for the previous fiscal year, audited
by Delloite & Touche or other independent public accountants of similar
standing;

          (b) as soon as available and in any event within sixty (60) days after
the end of each quarter of each fiscal year (other than the last quarter in any
fiscal year) of the Borrower, a statement of the Borrower, prepared in
accordance with GAAP, setting forth the operating income and operating expenses
of the Borrower, in sufficient detail so as to calculate Unencumbered Asset Pool
Net Operating Cash Flow of the Borrower for the immediately preceding quarter;

          (c) simultaneously with the delivery of each set of financial
statements referred to in clauses (a) and (b) above, a certificate of the chief
financial officer or the chief accounting officer of the Borrower (i) setting
forth in reasonable detail the calculations required to establish whether the
Borrower was in compliance with the requirements of Section 5.8 on the date of
such financial statements;(ii) stating whether any Default exists on the date of
such certificate and, if any Default then exists, setting forth the details
thereof and the action which the Borrower is taking or proposes to take with
respect thereto; and (iii) certifying (x) that such financial statements fairly
present the financial condition and the results of operations of the Borrower as
of the dates and for the periods indicated, in accordance with GAAP, subject, in
the case of  

                                       74
<PAGE>
 
interim financial statements, to normal year-end adjustments, and (y) that such
officer has reviewed the terms of the Loan Documents and has made, or caused to
be made under his or her supervision, a review in reasonable detail of the
business and condition of the Borrower during the period beginning on the date
through which the last such review was made pursuant to this Section 5.1(c) and
ending on a date not more than ten (10) Domestic Business Days prior to the date
of such delivery and that on the basis of such review of the Loan Documents and
the business and condition of the Borrower, to the best knowledge of such
officer, no Default or Event of Default under any other provision of Section 6.1
occurred or, if any such Default or Event of Default has occurred, specifying
the nature and extent thereof and, if continuing, the action the Borrower
proposes to take in respect thereof;

          (d) simultaneously with the delivery of each set of financial
statements referred to in clause (a) above, a statement of a firm of independent
public accountants confirming the calculations set forth in the officer's
certificate delivered simultaneously therewith pursuant to clause (c) above;

          (e) (i) within five (5) days after the president, chief financial
officer, treasurer, controller or other executive officer of the Borrower
obtains knowledge of any Default, if such Default is then continuing, a
certificate of the chief financial officer or the president of the Borrower
setting forth the details thereof and the action which the Borrower is taking or
proposes to take with respect thereto; (ii) promptly and in any event within ten
(10) days after the Borrower obtains knowledge thereof, notice of (x) any
litigation or governmental proceeding pending or threatened against the Borrower
which is likely to individually or in the aggregate, result in a Material
Adverse Effect, and (y) any other event, act or condition which is likely to
result in a Material Adverse Effect;

          (f) if and when any member of the ERISA Group (i) gives or is required
to give notice to the PBGC of any "reportable event" (as defined in Section 4043
of ERISA) with respect to any Plan which might constitute grounds for a
termination of such Plan under Title IV of ERISA, or knows that the plan
administrator of any Plan  

                                       75
<PAGE>
 
has given or is required to give notice of any such reportable event, a copy of
the notice of such reportable event given or required to be given to the PBGC;
(ii) receives notice of complete or partial withdrawal liability under Title IV
of ERISA or notice that any Multiemployer Plan is in reorganization, is
insolvent or has been terminated, a copy of such notice; (iii) receives notice
from the PBGC under Title IV of ERISA of an intent to terminate, impose
liability (other than for premiums under Section 4007 of ERISA) in respect of,
or appoint a trustee to administer any Plan, a copy of such notice; (iv) applies
for a waiver of the minimum funding standard under Section 412 of the Internal
Revenue Code, a copy of such application; (v) gives notice of intent to
terminate any Plan under Section 4041(c) of ERISA, a copy of such notice and
other information filed with the PBGC; (vi) gives notice of withdrawal from any
Plan pursuant to Section 4063 of ERISA, a copy of such notice; or (vii) fails to
make any payment or contribution to any Plan or Multiemployer Plan or in respect
of any Benefit Arrangement or makes any amendment to any Plan or Benefit
Arrangement which has resulted or could result in the imposition of a Lien or
the posting of a bond or other security, a certificate of the chief financial
officer or the chief accounting officer of the Borrower setting forth details as
to such occurrence and action, if any, which the Borrower or applicable member
of the ERISA Group is required or proposes to take;

          (g) promptly and in any event within five (5) Domestic Business Days
after the Borrower obtains actual knowledge of any of the following events, a
certificate of the Borrower executed by an officer of the Borrower specifying
the nature of such condition and the Borrower's, and if the Borrower has actual
knowledge thereof, the Environmental Affiliate's proposed initial response
thereto: (i) the receipt by the Borrower, or, if the Borrower has actual
knowledge thereof, any of the Environmental Affiliates, of any communication
(written or oral), whether from a governmental authority, citizens group,
employee or otherwise, that alleges that the Borrower, or, if the Borrower has
actual knowledge thereof, any of the Environmental Affiliates, is not in
compliance with applicable Environmental Laws, and such noncompliance is likely
to have a Material Adverse Effect, (ii) the Borrower shall obtain actual
knowledge that there exists any Environmental Claim which is  

                                       76
<PAGE>
 
likely to have a Material Adverse Effect pending or threatened against the
Borrower or any Environmental Affiliate or (iii) the Borrower obtains actual
knowledge of any release, emission, discharge or disposal of any Material of
Environmental Concern that is likely to form the basis of any Environmental
Claim against the Borrower or any Environmental Affiliate;

          (h) promptly and in any event within five (5) Domestic Business Days
after receipt of any material notices or correspondence from any company or
agent for any company providing insurance coverage to the Borrower relating to
any material loss or loss of the Borrower with respect to any of the
Unencumbered Asset Pool Properties, copies of such notices and correspondence;
and

          (i) promptly upon the mailing thereof to the shareholders or partners
of the Borrower, copies of all financial statements, reports and proxy statement
so mailed;

          (j) promptly upon the filing thereof, copies of all registration
statements (other than the exhibits thereto and any registration statements on
Form S-8 or its equivalent) and reports on Forms 10-K, 10-Q and 8-K (or their
equivalents) which the Borrower shall have filed with the Securities and
Exchange Commission;

          (k) simultaneously with delivery of the information required by
Sections 5.1(a) and (b), a statement of Unencumbered Asset Pool Net Operating
Cash Flow with respect to each Mortgaged Property and a list of all Unencumbered
Asset Pool Properties; and

          (l) from time to time such additional information regarding the
financial position or business of the Borrower as the Lead Agent, at the request
of any Bank, may reasonably request.

          Section 5.2.  Payment of Obligations.  The Borrower will pay and
                        ----------------------                             
discharge, at or before maturity, all its material obligations and liabilities
including, without limitation, any obligation pursuant to any agreement by which
it or any of its properties is bound and any tax liabilities, in any case, where
failure to do so will likely result in a Material Adverse Effect except (i) such
tax liabilities may be contested in good 

                                       77
<PAGE>
 
faith by appropriate proceedings, and will maintain in accordance with GAAP,
appropriate reserves for the accrual of any of the same; or (ii) such obligation
or liability as may be contested in good faith by appropriate proceedings.

          Section 5.3.  Maintenance of Property; Insurance.
                        ----------------------------------  

          (a) The Borrower will keep each of the Unencumbered Asset Pool
Properties in good repair, working order and condition, subject to ordinary wear
and tear.

          (b) The Borrower shall (a) maintain insurance as specified in Section
4.27 hereof with insurers meeting the qualifications described therein, which
insurance shall in any event not provide for materially less coverage than the
insurance in effect on the Closing Date, and (b) furnish to each Bank from time
to time, upon written request, copies of the policies under which such insurance
is issued, certificates of insurance and such other information relating to such
insurance as such Bank may reasonably request. The Borrower will deliver to the
Banks (i) upon request of any Bank through the Lead Agent from time to time,
full information as to the insurance carried, (ii) within five (5) days of
receipt of notice from any insurer, a copy of any notice of cancellation or
material change in coverage from that existing on the date of this Agreement and
(iii) forthwith, notice of any cancellation or nonrenewal of coverage by the
Borrower.

          Section 5.4.  Conduct of Business.  The Borrower's primary business 
                        -------------------
will continue to be acquiring, owning, operating, managing, developing (to the
extent permitted in this Agreement), and leasing office and industrial
properties.

          Section 5.5.  Compliance with Laws.  The Borrower will comply in all
                        --------------------                                   
material respects with all applicable laws, ordinances, rules, regulations, and
requirements of governmental authorities (including, without limitation,
Environmental Laws, all zoning and building codes and ERISA and the rules and
regulations thereunder) except where the necessity of compliance therewith is
contested in good faith by appropriate proceedings.

                                       78
<PAGE>
 
          Section 5.6.  Inspection of Property, Books and Records.  The Borrower
                        -----------------------------------------   
will keep proper books of record and account in which full, true and correct
entries shall be made of all dealings and transactions in relation to its
business and activities; and will permit representatives of any Bank at such
Bank's expense to visit and inspect any of its properties to examine and make
abstracts from any of its books and records and to discuss its affairs, finances
and accounts with its officers and employees, all at such reasonable times, upon
reasonable notice, and as often as may reasonably be desired.

          Section 5.7.  Existence.
                        ---------  

          (a) The Borrower shall do or cause to be done all things necessary to
preserve and keep in full force and effect its corporate existence or its
partnership existence, as applicable.

          (b) The Borrower shall do or cause to be done all things necessary to
preserve and keep in full force and effect its patents, trademarks,
servicemarks, tradenames, copyrights, franchises, licenses, permits,
certificates, authorizations, qualifications, accreditations, easements, rights
of way and other rights, consents and approvals the nonexistence of which is
likely to have a Material Adverse Effect.

          Section 5.8.  Financial Covenants.
                        -------------------  

          (a) Total Liabilities to Total Asset Value.  As of the last day of 
              --------------------------------------         
each calendar quarter, the Total Debt Ratio will not be greater than 55%.

          (b) EBITDA Debt Service Coverage.  As of the last day of each calendar
              ----------------------------                                      
quarter, the ratio of (i) Annual EBITDA to (ii) Total Debt Service, will
not be less than 2.0:1.

          (c) Fixed Charge Coverage.  As of the last day of each calendar 
              ---------------------   
quarter, the ratio of (x) Annual EBITDA, less reserves for Capital Expenditures
of $.70 per square foot per annum for each Real Property Asset that is an office
property and $.40 per square foot per annum for each Real Property Asset that is
an industrial property to (y) the sum of (i) Total Debt Service, and 

                                       79
<PAGE>
 
(ii) dividends or other payments payable by the General Partner with respect to
any preferred stock issued by the General Partner and distributions or other
payments payable by the Borrower with respect to any preferred partnership units
of the Borrower, will not be less than 1.5:1.

          (d) Limitation on Secured Debt.  Secured Debt of the Borrower, the 
              --------------------------
General Partner and their Consolidated Subsidiaries shall at no time exceed
thirty percent (30%) of Total Asset Value.

          (e) Unsecured Debt Ratio.  As of each of (x) the last day of each 
              --------------------     
calendar quarter, and (y) any Borrowing, the Unsecured Debt Ratio shall exceed
2.0:1.

          (f) Unencumbered Debt Service Coverage.  As of the last day of each 
              ----------------------------------   
calendar quarter and as of the date of any sale or secured financing of any
Unencumbered Asset Pool Property, the ratio of (i) Unencumbered Asset Pool Net
Operating Cash Flow to (ii) Pro-Forma Debt Service will not be less than 2.0:1.

          (g) Dividends.  The Borrower will not, as determined on an aggregate
              ---------     
annual basis, pay any partnership distributions in excess of the greater of (i)
95% of its consolidated FFO for such year, and (ii) an amount which results in
distributions to the General Partner in an amount sufficient to permit the
General Partner to pay dividends to its shareholders which it reasonably
believes are necessary for it to (A) maintain its qualification as a real estate
investment trust for federal and state income tax purposes, and (B) avoid the
payment of federal or state income or excise tax. During the continuance of an
Event of Default under Section 6.1(a), the Borrower shall make only those
partnership distributions necessary to make distributions to the General Partner
to pay dividends to its shareholders which it reasonably believes are necessary
to maintain its status as a real estate investment trust for federal and state
income tax purposes.

          (h) Minimum Consolidated Tangible Net Worth.  The Consolidated 
              ---------------------------------------      
Tangible Net Worth will at no time be less than the sum of (i) $502,000,000 plus
(ii) 90% of all Net Offering Proceeds.

                                       80
<PAGE>
 
          (i) Debt.  Prior to the date on which the Borrower receives an 
              ----                
Investment Grade Rating from either S&P or Moody's, neither the Borrower nor the
General Partner shall, at any time, create, incur, assume, guaranty, suffer to
exist or otherwise become or remain directly or indirectly liable with respect
to any Debt other than Non-Recourse Debt. Notwithstanding the provisions of the
sentence immediately foregoing, the Borrower shall have the right to incur
Recourse Debt (A) up to an aggregate maximum of $5,000,000 which is either (i)
unsecured or (ii) incurred with respect to assets which are not Unencumbered
Asset Pool Properties and is subject to a purchase money security interest or
security interest under a conditional sale agreement, and (B) up to an aggregate
maximum of $50,000,000, which is secured and which is incurred in connection
with the financing of construction costs.

          Section 5.9.  Restriction on Fundamental Changes; Operation and
                        -------------------------------------------------
Control.  The Borrower shall not enter into any merger or consolidation, unless
- -------
the Borrower is the surviving entity, or liquidate, wind-up or dissolve (or
suffer any liquidation or dissolution), discontinue its business or convey,
lease, sell, transfer or otherwise dispose of, in one transaction or series of
transactions, any substantial part of its business or property, whether now or
hereafter acquired, hold an interest in any subsidiary which is not controlled
by the Borrower or the General Partner or enter into other business lines,
without the prior written consent of the Lead Agent, which consent shall not be
given unless the Required Banks so consent.

          (b) The Borrower shall not amend its articles of incorporation, by-
laws or agreement of limited partnership, as applicable, in any material
respect, without the Lead Agent's consent, which shall not be unreasonably
withheld or delayed.

          Section 5.10. Changes in Business.  The Borrower shall not enter into
                        -------------------                                     
any business which is substantially different from that conducted by the
Borrower on the Closing Date after giving effect to the transactions
contemplated by the Loan Documents.

                                       81
<PAGE>
 
          Section 5.11. Sale of Unencumbered Asset Pool Properties.  Prior to 
                        ------------------------------------------ 
the sale or transfer of any Unencumbered Asset Pool Property, the Borrower shall
(i) deliver prior written notice to the Lead Agent, (ii) deliver to the Lead
Agent a certificate from its chief financial officer or chief accounting officer
certifying that at the time of such sale or other disposal (based on pro-forma
calculations for the previous period assuming that such Unencumbered Asset Pool
Property was not a Unencumbered Asset Pool Property for the relevant period) all
of the covenants contained in Sections 5.8, 5.14, 5.16, 5.17 and 5.20 are and
after giving effect to the transaction shall continue to be true and accurate in
all respects, and (iii) pay to the Lead Agent an amount equal to that required
pursuant to Section 2.10(a). In the event that a Separate Parcel that originally
formed a part of a Unencumbered Asset Pool Property is to be sold or
transferred, the value of the remaining portion of the Unencumbered Asset Pool
Property will be determined by Lead Agent at the time of sale or transfer in its
sole discretion.

          Section 5.12. Fiscal Year; Fiscal Quarter.  The Borrower shall not
                        ---------------------------                          
change its fiscal year or any of its fiscal quarters without the Lead Agent's
consent, which shall not be unreasonably withheld or delayed.

          Section 5.13. Margin Stock.  None of the proceeds of the Loan will be
                        ------------                                            
used, directly or indirectly, for the purpose, whether immediate, incidental or
ultimate, of buying or carrying any Margin Stock.

          Section 5.14. Development  Activities.  The Borrower shall not engage
                        -----------------------
in any development activities except for development in connection with the
expansion and/or repositioning or restoration following a casualty or
condemnation of existing improvements on Real Property Assets. Notwithstanding
the foregoing, the Borrower may engage in all other development activities where
there is construction completion risk provided that in no event shall the value
(determined in accordance with the book value thereof, in accordance with GAAP)
of the Real Property Assets under such other type of development exceed twenty
percent (20%) of the Borrower's Total Asset Value.

                                       82
<PAGE>
 
          Section 5.15. Interest Rate Protection.  On or before the date that is
                        ------------------------
the six (6) month anniversary of the date hereof, the Borrower and the General
Partner shall maintain Interest Rate Hedges on a notional amount of the Debt
under clause (A) of the definition of Debt of the Borrower, the General Partner
and their Subsidiaries which, when added to the aggregate principal amount of
the Debt under clause (A) of the definition of Debt of the Borrower, the General
Partner and their Subsidiaries which bears interest at a fixed rate, equals or
exceeds 50% of the aggregate principal amount of all Debt under clause (A) of
the definition of Debt of the Borrower, the General Partner and their
Subsidiaries.  "Interest Rate Hedges" shall mean interest rate exchange, collar,
                --------------------                                            
cap, swap, adjustable strike cap, adjustable strike corridor or similar
agreements having terms, conditions and tenors reasonably acceptable to the Lead
Agent entered into by the Borrower, the General Partner and/or their
Subsidiaries in order to provide protection to, or minimize the impact upon, the
Borrower, the General Partner and/or their Subsidiaries of increasing floating
rates of interest applicable to Debt under clause (A) of the definition of Debt.

          Section 5.16.  Joint Ventures.  The value of the Borrower's and the
                         --------------                                       
General Partner's interest in any joint venture, whether consolidated or
unconsolidated, shall at no time exceed 25% of Total Asset Value.

          Section 5.17.  Investments in Unimproved Real Property. The aggregate
                         --------------------------------------- 
amount of the investments of the Borrower, the General Partner and their
Consolidated Subsidiaries in unimproved real property, will at no time exceed
7.5% of Total Asset Value.

          Section 5.18.  Use of Proceeds.  The Borrower shall use the proceeds
                         ---------------
of the Loans solely to finance the acquisition of additional Unencumbered Asset
Pool Properties or other Real Property Assets which are industrial or office
properties and for its general business purposes.

          Section 5.19.  Borrower Status.  The General Partner shall at all 
                         ---------------
times (i) maintain its status as a self-directed and self-administered real
estate investment trust under the Code, and (ii) remain a publicly traded
company listed on the New York Stock Exchange.

                                       83
<PAGE>
 
          Section 5.20  Certain Requirements for the Unencumbered Asset Pool.
                        ---------------------------------------------------- 
At all times, (i) the Real Property Assets in the Unencumbered Asset Pool shall
be on average during any consecutive twelve-month period (tested quarterly) at
least 85% leased to tenants and (ii) any Real Property Asset that is a part of
the Unencumbered Asset Pool less than 85% leased to tenants for more than twelve
months shall not account for more than ten percent (10%) of the Unencumbered
Asset Pool Properties Value..

          (b) Any Subsidiary which owns any of the Real Property Assets in the
Unencumbered Asset Pool shall not at any time incur any Debt, nor shall the
Borrower pledge its interest in such Subsidiary nor shall the Borrower or such
Subsidiary enter into any negative pledge with respect thereto.


                                  ARTICLE VI

                                   DEFAULTS

          Section 6.1.  Events of Default.  Each of the following shall 
                        -----------------
constitute an event of default under this Agreement (an "Event of Default"):
                                                         ----------------   

          (a) the Borrower shall fail to pay when due any principal of any Loan,
or the Borrower shall fail to pay when due any interest on any Loan; provided,
                                                                     -------- 
however, that the Borrower shall be entitled to a three (3) Domestic Business
- -------                                                             
Day grace period with respect thereto but only as to two (2) payments of
interest during the Term, or the Borrower shall fail to pay within three (3)
Domestic Business Days after the same is due any fees or other amounts payable
hereunder;

          (b) the Borrower shall fail to observe or perform any covenant
contained in Sections 5.8 to 5.20, inclusive, subject to any applicable grace
periods set forth therein;

          (c) the Borrower shall fail to observe or perform any covenant or
agreement contained in this Agreement (other than those covered by clause (a) or
(b) 

                                       84
<PAGE>
 
above) for 30 days after written notice thereof has been given to the Borrower
by the Lead Agent;

          (d) any representation, warranty, certification or statement made by
the Borrower in this Agreement or in any certificate, financial statement or
other document delivered pursuant to this Agreement shall prove to have been
incorrect in any material respect when made (or deemed made);

          (e) the Borrower or the General Partner shall default in the payment
when due (whether by scheduled maturity, required prepayment, acceleration,
demand or otherwise) of any amount owing in respect of any Recourse Debt or Debt
guaranteed by the Borrower or the General Partner (other than the Obligations)
and such default shall continue beyond the giving of any required notice and the
expiration of any applicable grace period (as the same may be extended by the
applicable lender) and such default shall not be waived by the applicable lender
(which waiver shall serve to reinstate the applicable loan), or the Borrower or
the General Partner shall default in the performance or observance of any
obligation or condition with respect to any such Debt or any other event shall
occur or condition exist beyond the giving of any required notice and the
expiration of any applicable grace period (as the same may be extended by the
applicable lender), if in any such case as a result of such default, event or
condition, the lender thereof shall accelerate the maturity of any such Debt or
to permit (without any further requirement of notice or lapse of time) the
holder or holders thereof, or any trustee or agent for such holders, to
accelerate the maturity of any such Debt and such default shall not be waived by
the applicable lender (which waiver shall serve to reinstate the applicable
loan), or any such Debt shall become or be declared to be due and payable prior
to its stated maturity other than as a result of a regularly scheduled payment;

          (f) the Borrower or the General Partner shall commence a voluntary
case or other proceeding seeking liquidation, reorganization or other relief
with respect to itself or its debts under any bankruptcy, insolvency or other
similar law now or hereafter in effect or seeking the appointment of a trustee,
receiver, liquidator, custodian or other similar official of it or any sub-

                                       85
<PAGE>
 
stantial part of its property, or shall consent to any such relief or to the
appointment of or taking possession by any such official in an involuntary case
or other proceeding commenced against it, or shall make a general assignment for
the benefit of creditors, or shall fail generally to pay its debts as they
become due, or shall take any corporate action to authorize any of the
foregoing;

          (g) an involuntary case or other proceeding shall be commenced against
the Borrower or the General Partner seeking liquidation, reorganization or other
relief with respect to it or its debts under any bankruptcy, insolvency or other
similar law now or hereafter in effect or seeking the appointment of a trustee,
receiver, liquidator, custodian or other similar official of it or any
substantial part of its property, and such involuntary case or other proceeding
shall remain undismissed and unstayed for a period of 60 days; or an order for
relief shall be entered against the Borrower or the General Partner under the
federal bankruptcy laws as now or hereafter in effect;

          (h) the Borrower shall default in its obligations under any Loan
Document other than this Agreement beyond any applicable notice and grace
periods;

          (i) the General Partner shall default in its obligations under the
Guaranty beyond any applicable notice and grace periods;

          (j) any member of the ERISA Group shall fail to pay when due an amount
or amounts aggregating in excess of $1,000,000 which it shall have become liable
to pay under Title IV of ERISA, or notice of intent to terminate a Material Plan
shall be filed under Title IV of ERISA by any member of the ERISA Group, any
plan administrator or any combination of the foregoing, or the PBGC shall
institute proceedings under Title IV of ERISA to terminate, to impose liability
(other than for premiums under Section 4007 of ERISA) in respect of, or to cause
a trustee to be appointed to administer any Material Plan, or a condition shall
exist by reason of which the PBGC would be entitled to obtain a decree
adjudicating that any Material Plan must be terminated, or there shall occur a
complete or partial withdrawal from, or a default, within the meaning of Section

                                       86
<PAGE>
 
4219(c)(5) of ERISA, with respect to, one or more Multiemployer Plans which
could cause one or more members of the ERISA Group to incur a current payment
obligation in excess of $1,000,000;

          (k) one or more final nonappealable judgments or decrees in an
aggregate amount of $10,000,000 as of such date shall be entered by a court or
courts of competent jurisdiction against the Borrower or the General Partner
(other than any judgment as to which, and only to the extent, a reputable
insurance company has acknowledged coverage of such claim in writing) and (i)
any such judgments or decrees shall not be stayed, discharged, paid, bonded or
vacated within thirty (30) days (or bonded, vacated or satisfied within thirty
(30) after any stay is lifted) or (ii) enforcement proceedings shall be
commenced by any creditor on any such judgments or decrees;

          (l) (i) any Environmental Claim shall have been asserted against the
Borrower or any Environmental Affiliate, (ii) any release, emission, discharge
or disposal of any Material of Environmental Concern shall have occurred, and
such event is reasonably likely to form the basis of an Environmental Claim
against the Borrower or any Environmental Affiliate, or (iii) the Borrower or
the Environmental Affiliates shall have failed to obtain any Environmental
Approval necessary for the ownership, or operation of its business, property or
assets or any such Environmental Approval shall be revoked, terminated, or
otherwise cease to be in full force and effect, in the case of clauses (i), (ii)
or (iii) above, if the existence of such condition has had or is reasonably
likely to have a Material Adverse Effect;

          (m) during any consecutive two year period commencing on or after the
date hereof, individuals who at the beginning of such period constituted the
Board of Directors of the General Partner of the Borrower (together with any new
directors whose election by the Board of Directors or whose nomination for
election by the General Partner stockholders was approved by a vote of at least
a majority of the members of the Board of Directors then in the office who
either were members of the Board of Directors at the beginning of such period or
whose election or nomination for election was previ-

                                       87
<PAGE>
 
ously so approved) cease for any reason to constitute a majority of the members
of the Board of Directors then in office;

          (n) the General Partner shall cease at any time to qualify as a real
estate investment trust under the Internal Revenue Code; and

          (o) at any time, for any reason the Borrower seeks to repudiate its
obligations under any Loan Document.

          Section 6.2.  Rights and Remedies.    Upon the occurrence of any 
                        -------------------
Event of Default described in Sections 6.1(f) or (g), the unpaid principal
amount of, and any and all accrued interest on, the Loans and any and all
accrued fees and other Obligations hereunder shall automatically become
immediately due and payable, with all additional interest from time to time
accrued thereon and without presentation, demand, or protest or other
requirements of any kind (including, without limitation, valuation and
appraisement, diligence, presentment, notice of intent to demand or accelerate
and notice of acceleration), all of which are hereby expressly waived by the
Borrower; and upon the occurrence and during the continuance of any other Event
of Default, the Lead Agent may exercise any of its rights and remedies hereunder
and by written notice to the Borrower, declare the unpaid principal amount of
and any and all accrued and unpaid interest on the Loans and any and all accrued
fees and other Obligations hereunder to be, and the same shall thereupon be,
immediately due and payable with all additional interest from time to time
accrued thereon and without presentation, demand, or protest or other
requirements of any kind other than as provided in the Loan Documents
(including, without limitation, valuation and appraisement, diligence,
presentment, and notice of intent to demand or accelerate), all of which are
hereby expressly waived by the Borrower.

          (b) Notwithstanding the foregoing, upon the occurrence and during the
continuance of any Event of Default other than any Event of Default described in
Sections 6.1(f) or (g), the Lead Agent shall not exercise any of its rights and
remedies hereunder nor declare the unpaid principal amount of and any and all 

                                       88
<PAGE>
 
accrued and unpaid interest on the Loans and any and all accrued fees and other
Obligations hereunder to be immediately due and payable, until such time as the
Lead Agent shall have delivered a notice to the Banks specifying the Event of
Default which has occurred and whether Lead Agent recommends the acceleration of
the Obligations due hereunder or the exercise of other remedies hereunder. The
Banks shall notify the Lead Agent if they approve or disapprove of the
acceleration of the Obligations due hereunder or the exercise of such other
remedy recommended by Lead Agent within five (5) Domestic Business Days after
receipt of such notice. If any Bank shall not respond within such five (5)
Domestic Business Day period, then such Bank shall be deemed to have accepted
Lead Agent's recommendation for acceleration of the Obligations due hereunder or
the exercise of such other remedy. If the Required Banks shall approve the
acceleration of the Obligations due hereunder or the exercise of such other
remedy, then Lead Agent shall declare the unpaid principal amount of and any and
all accrued and unpaid interest on the Loans and any and all accrued fees and
other Obligations hereunder to be immediately due and payable or exercise such
other remedy approved by the Required Banks. If the Required Banks shall neither
approve nor disapprove the acceleration of the Obligations due hereunder or such
other remedy recommended by Lead Agent, then Lead Agent may accelerate the
Obligations due hereunder or exercise any of its rights and remedies hereunder
in its sole discretion. If the Required Banks shall disapprove the acceleration
of the Obligations due hereunder or the exercise of such other remedy
recommended by Lead Agent, but approve of another remedy, then to the extent
permitted hereunder, Lead Agent shall exercise such remedy. In the event the
Lead Agent exercises any remedy provided in any of the Loan Documents, the Lead
Agent shall act as a collateral agent for the Banks.

          Section 6.3.  Notice of Default.  If the Lead Agent shall not already
                        -----------------                                       
have given any notice to the Borrower under Section 6.1, the Lead Agent shall
give notice to the Borrower under Section 6.1 promptly upon being requested to
do so by the Required Banks and shall thereupon notify all the Banks thereof.

          Section 6.4.  Actions in Respect of Letters of Credit.    If, at any
                        ---------------------------------------      
time and from time to time, any Letter of Credit shall have been issued
hereunder and an 

                                       89
<PAGE>
 
Event of Default shall have occurred and be continuing, then, upon the
occurrence and during the continuation thereof, the Lead Agent may, whether in
addition to the taking by the Lead Agent of any of the actions described in this
Article or otherwise, make a demand upon the Borrower to, and forthwith upon
such demand (but in any event within ten (10) days after such demand) the
Borrower shall, pay to the Lead Agent, on behalf of the Banks, in same day funds
at the Lead Agent's office designated in such demand, for deposit in a special
cash collateral account (the "Letter of Credit Collateral Account") to be 
                              -----------------------------------    
maintained in the name of the Lead Agent (on behalf of the Banks) and under its
sole dominion and control at such place as shall be designated by the Lead
Agent, an amount equal to the amount of the Letter of Credit Usage under the
Letters of Credit. Interest shall accrue on the Letter of Credit Collateral
Account at a rate equal to the rate on overnight funds.

          (b) The Borrower hereby pledges, assigns and grants to the Lead Agent,
as administrative agent for its benefit and the ratable benefit of the Banks a
lien on and a security interest in, the following collateral (the "Letter of
                                                                   ---------
Credit Collateral"):
- -----------------   

              (i)   the Letter of Credit Collateral Account, all cash deposited
     therein and all certificates and instruments, if any, from time to time
     representing or evidencing the Letter of Credit Collateral Account;

              (ii)  all notes, certificates of deposit and other instruments
     from time to time hereafter delivered to or otherwise possessed by the Lead
     Agent for or on behalf of the Borrower in substitution for or in respect of
     any or all of the then existing Letter of Credit Collateral;

              (iii) all interest, dividends, cash, instruments and other
     property from time to time received, receivable or otherwise distributed in
     respect of or in exchange for any or all of the then existing Letter of
     Credit Collateral; and

              (iv) to the extent not covered by the above clauses, all proceeds
     of any or all of the foregoing Letter of Credit Collateral.

                                       90
<PAGE>
 
The lien and security interest granted hereby secures the payment of all
obligations of the Borrower now or hereafter existing hereunder and under any
other Loan Document.

          (c) The Borrower hereby authorizes the Lead Agent for the ratable
benefit of the Banks to apply, from time to time after funds are deposited in
the Letter of Credit Collateral Account, funds then held in the Letter of Credit
Collateral Account to the payment of any amounts, in such order as the Lead
Agent may elect, as shall have become due and payable by the Borrower to the
Banks in respect of the Letters of Credit.

          (d) Neither the Borrower nor any Person claiming or acting on behalf
of or through the Borrower shall have any right to withdraw any of the funds
held in the Letter of Credit Collateral Account, except as provided in Section
6.4(h) hereof.

          (e) The Borrower agrees that it will not (i) sell or otherwise dispose
of any interest in the Letter of Credit Collateral or (ii) create or permit to
exist any lien, security interest or other charge or encumbrance upon or with
respect to any of the Letter of Credit Collateral, except for the security
interest created by this Section 6.4.

          (f) If any Event of Default shall have occurred and be continuing:

              (i) The Lead Agent may, in its sole discretion, without notice to
     the Borrower except as required by law and at any time from time to time,
     charge, set off or otherwise apply all or any part of first, (x) amounts
                                                           -----  
     previously drawn on any Letter of Credit that have not been reimbursed by
     the Borrower and (y) any Letter of Credit Usage described in clause (ii) of
     the definition thereof that are then due and payable and second, any other
                                                              ------           
     unpaid Obligations then due and payable against the Letter of Credit
     Collateral Account or any part thereof, in such order as the Lead Agent
     shall elect.  The rights of the Lead Agent under this Section 6.4 are in
     addition to any rights and remedies which any Bank may have.

                                       91
<PAGE>
 
              (ii) The Lead Agent may also exercise, in its sole discretion, in
     respect of the Letter of Credit Collateral Account, in addition to the
     other rights and remedies provided herein or otherwise available to it, all
     the rights and remedies of a secured party upon default under the Uniform
     Commercial Code in effect in the State of New York at that time.

          (g) The Lead Agent shall be deemed to have exercised reasonable care
in the custody and preservation of the Letter of Credit Collateral if the Letter
of Credit Collateral is accorded treatment substantially equal to that which the
Lead Agent accords its own property, it being understood that, assuming such
treatment, the Lead Agent shall not have any responsibility or liability with
respect thereto.

          (h) At such time as all Events of Default have been cured or waived in
writing, all amounts remaining in the Letter of Credit Collateral Account shall
be promptly returned to the Borrower. Absent such cure or written waiver, any
surplus of the funds held in the Letter of Credit Collateral Account and
remaining after payment in full of all of the Obligations of the Borrower
hereunder and under any other Loan Document after the Maturity Date shall be
paid to the Borrower or to whomsoever may be lawfully entitled to receive such
surplus.


                                  ARTICLE VII

                                THE LEAD AGENT

          Section 7.1.  Appointment and Authorization.  Each Bank irrevocably
                        -----------------------------                         
appoints and authorizes the Lead Agent to take such action as agent on its
behalf and to exercise such powers under this Agreement and the other Loan
Documents as are delegated to the Lead Agent by the terms hereof or thereof,
together with all such powers as are reasonably incidental thereto.

          Section 7.2.  Lead Agent and Affiliates.  Morgan shall have the same
                        -------------------------                              
rights and powers under this Agreement as any other Bank and may exercise or
refrain from exercising the same as though it were not the Lead 

                                       92
<PAGE>
 
Agent, and Morgan and its affiliates may accept deposits from, lend money to,
and generally engage in any kind of business with the Borrower or any subsidiary
or affiliate of the Borrower as if it were not the Lead Agent hereunder, and the
term "Bank" and "Banks" shall include Morgan in its individual capacity.

          Section 7.3.  Action by Lead Agent.  The obligations of the Lead Agent
                        --------------------
hereunder are only those expressly set forth herein.  Without limiting the
generality of the foregoing, the Lead Agent shall not be required to take any
action with respect to any Default, except as expressly provided in Article VI.

          Section 7.4.  Consultation with Experts.  The Lead Agent may consult
                        -------------------------
with legal counsel (who may be counsel for the Borrower), independent public
accountants and other experts selected by it and shall not be liable for any
action taken or omitted to be taken by it in good faith in accordance with the
advice of such counsel, accountants or experts.

          Section 7.5.  Liability of Lead Agent.  Neither the Lead Agent nor any
                        -----------------------
of its affiliates nor any of their respective directors, officers, agents or
employees shall be liable for any action taken or not taken by it in connection
herewith (i) with the consent or at the request of the Required Banks or, where
required by the terms of this Agreement, all of the Banks, or (ii) in the
absence of its own gross negligence or willful misconduct.  Neither the Lead
Agent nor any of its directors, officers, agents or employees shall be
responsible for or have any duty to ascertain, inquire into or verify (i) any
statement, warranty or representation made in connection with this Agreement or
any borrowing hereunder; (ii) the performance or observance of any of the
covenants or agreements of the Borrower; (iii) the satisfaction of any condition
specified in Article III, except receipt of items required to be delivered to
the Lead Agent; or (iv) the validity, effectiveness or genuineness of this
Agreement, the other Loan Documents or any other instrument or writing furnished
in connection herewith.  The Lead Agent shall not incur any liability by acting
in reliance upon any notice, consent, certificate, statement, or other writing
(which may be a bank wire, telex or similar writing) believed by it in good

                                       93
<PAGE>
 
faith to be genuine or to be signed by the proper party or parties.

          Section 7.6.  Indemnification.  Each Bank shall, ratably in accordance
                        ---------------
with its Commitment, indemnify the Lead Agent, its affiliates and their
respective directors, officers, agents and employees (to the extent not
reimbursed by the Borrower) against any cost, expense (including counsel fees
and disbursements), claim, demand, action, loss or liability (except such as
result from such indemnitees' gross negligence or willful misconduct) that such
indemnitees may suffer or incur as a result of, or in connection with, the Lead
Agent's capacity as Lead Agent in connection with this Agreement, the other Loan
Documents or any action taken or omitted by such indemnitees in accordance with
this Agreement.

          Section 7.7.  Credit Decision.  Each Bank acknowledges that it has,
                        ---------------                                       
independently and without reliance upon the Lead Agent or any other Bank, and
based on such documents and information as it has deemed appropriate, made its
own credit analysis and decision to enter into this Agreement.  Each Bank also
acknowledges that it will, independently and without reliance upon the Lead
Agent or any other Bank, and based on such documents and information as it shall
deem appropriate at the time, continue to make its own credit decisions in
taking or not taking any action under this Agreement.

          Section 7.8.  Successor Lead Agent.  The Lead Agent may resign at any
                        --------------------                                    
time by giving notice thereof to the Banks and the Borrower.  In addition, if
the Lead Agent at any time shall have been finally determined to have committed
gross negligence or willful misconduct in connection with its performance of its
duties as Lead Agent hereunder, then, upon notice from the Required Banks, the
Lead Agent shall resign. Upon any such resignation, the Required Banks shall
have the right to appoint a successor Lead Agent with the consent of the
Borrower provided that no Event of Default shall have occurred and be
continuing.  If no successor Lead Agent shall have been so appointed by the
Required Banks, and shall have accepted such appointment, within 30 days after
the retiring Lead Agent gives notice of resignation, then the retiring Lead
Agent may, on behalf of the Banks, appoint a successor Lead Agent, which shall
be a commercial bank organized or licensed under the laws of 

                                       94
<PAGE>
 
the United States of America or of any State thereof and having a combined
capital and surplus of at least $50,000,000. Upon the acceptance of its
appointment as the Lead Agent hereunder by a successor Lead Agent, such
successor Lead Agent shall thereupon succeed to and become vested with all the
rights and duties of the retiring Lead Agent, and the retiring Lead Agent shall
be discharged from its duties and obligations hereunder first accruing or
arising after the effective date of such retirement. After any retiring Lead
Agent's resignation hereunder as Lead Agent, the provisions of this Article
shall inure to its benefit as to any actions taken or omitted to be taken by it
while it was the Lead Agent.

     If, at any time during the Term, the Lead Agent shall no longer have any
Commitment under this Agreement, the Lead Agent shall give notice of its offer
to resign to the Banks and the Borrower.  Upon any such offer of resignation,
the Required Banks shall have the right to appoint a successor Lead Agent or to
retain the Lead Agent with the consent of the Borrower, provided that no Event
of Default shall be outstanding.

          Section 7.9.  Lead Agent's Fee.  The Borrower shall pay to the Lead 
                        ----------------
Agent for its own account fees in the amounts and at the times previously agreed
upon between the Borrower and the Lead Agent.

          Section 7.10. Copies of Notices.  Lead Agent shall deliver to each 
                        -----------------
Bank a copy of any notice sent to the Borrower by Lead Agent in connection with
the performance of its duties as Lead Agent hereunder; and Lead Agent shall
deliver to each Bank a copy of any notice sent to the Lead Agent by the Borrower
in connection with any Default or Event of Default hereunder.


                                 ARTICLE VIII

                            CHANGE IN CIRCUMSTANCES

          Section 8.1.  Basis for Determining Interest Rate Inadequate or 
                        -------------------------------------------------
Unfair. If on or prior to the first day of any Interest Period for any Euro-
- ------
Dollar Borrowing or Money Market Borrowing:

                                       95
<PAGE>
 
          (a)  the Lead Agent is advised by the Reference Bank that deposits in
     dollars (in the applicable amounts) are not being offered to the Reference
     Bank in the relevant market for such Interest Period, or

          (b)  Banks having 50% or more of the aggregate amount of the affected
     Loans advise the Lead Agent that the Adjusted London Interbank Offered Rate
     as determined by the Lead Agent will not adequately and fairly reflect the
     cost to such Banks of funding their Euro-Dollar Loans for such Interest
     Period, the Lead Agent shall forthwith give notice thereof to the Borrower
     and the Banks, whereupon until the Lead Agent notifies the Borrower that
     the circumstances giving rise to such suspension no longer exist, the
     obligations of the Banks to make Euro-Dollar Loans, or to continue or
     convert outstanding Loans as or into Euro-Dollar Loans, as the case may be,
     shall be suspended, and each outstanding Euro-Dollar Loan shall be
     converted into a Base Rate Loan on the last day of the then current
     Interest Period applicable thereto. Unless the Borrower notifies the Lead
     Agent at least two Domestic Business Days before the date of any Euro-
     Dollar Borrowing or Money Market LIBOR Borrowing for which a Notice of
     Borrowing has previously been given that it elects not to borrow on such
     date, (i) if such Borrowing is a Committed Borrowing, such Borrowing shall
     instead be made as a Base Rate Borrowing, and (ii) if such Borrowing is a
     Money Market LIBOR Borrowing, the Money Market LIBOR Loans comprising such
     Borrowing shall bear interest for each day from and including the first day
     to but excluding the last day of the Interest Period applicable thereto at
     the Base Rate for such day.

          Section 8.2.  Illegality.  If, after the date of this Agreement, the
                        ----------                                          
     adoption of any applicable law, rule or regulation, or any change in any
     existing applicable law, rule or regulation, or any change in the
     interpretation or administration thereof by any governmental authority,
     central bank or comparable agency charged with the interpretation or
     administration thereof, or compliance by any Bank (or its Euro-Dollar
     Lending Office) with any request or directive (whether or not having the
     force of law) of any such authority, central bank or comparable agency
     shall make it unlawful or impossible for any Bank (or its Euro-Dollar
     Lending Office) to make, maintain or fund its Euro-Dollar Loans

                                       96
<PAGE>
 
     or Money Market Loans or to participate in any Letter of Credit issued by
     the Fronting Bank, or, with respect to the Fronting Bank, to issue any
     Letter of Credit, and such Bank shall so notify the Lead Agent, the Lead
     Agent shall forthwith give notice thereof to the other Banks and the
     Borrower, whereupon until such Bank notifies the Borrower and the Lead
     Agent that the circumstances giving rise to such suspension no longer
     exist, the obligation of such Bank to make or convert Euro-Dollar Loans or
     Money Market Loans, or to participate in any Letter of Credit issued by the
     Fronting Bank or, with respect to the Fronting Bank, to issue any Letter of
     Credit, shall be suspended. Before giving any notice to the Lead Agent
     pursuant to this Section, such Bank shall designate a different Euro-Dollar
     Lending Office if such designation will avoid the need for giving such
     notice and will not, in the judgment of such Bank, be otherwise
     disadvantageous to such Bank. If such Bank shall determine that it may not
     lawfully continue to maintain and fund any of its outstanding Euro-Dollar
     Loans or Money Market Loans (as the case may be) to maturity and shall so
     specify in such notice, the Borrower shall immediately prepay in full the
     then outstanding principal amount of each such Euro-Dollar Loan or Money
     Market Loan, together with accrued interest thereon. Concurrently with
     prepaying each such Euro-Dollar Loan, the Borrower shall borrow a Base Rate
     Loan in an equal principal amount from such Bank (on which interest and
     principal shall be payable contemporaneously with the related Euro-Dollar
     Loans or Money Market Loans of the other Banks), and such Bank shall make
     such a Base Rate Loan.

          Section 8.3.  Increased Cost and Reduced Return.
                        ---------------------------------  

          (a)  If, after (x) the date hereof, in the case of any Committed Loan
     or any obligation to make Committed Loans or (y) the date of the related
     Money Market Quote, in the case of any Money Market Loan, the adoption of
     any applicable law, rule or regulation, or any change in any applicable
     law, rule or regulation, or any change in the interpretation or
     administration thereof by any governmental authority, central bank or
     comparable agency charged with the interpretation or administration
     thereof, or compliance by any Bank (or its Applicable Lending Office) with
     any request or di-

                                       97
<PAGE>
 
     rective (whether or not having the force of law) of any such authority,
     central bank or comparable agency shall impose, modify or deem applicable
     any reserve (including, without limitation, any such requirement imposed by
     the Board of Governors of the Federal Reserve System (but excluding with
     respect to any Euro-Dollar Loan any such requirement reflected in an
     applicable Euro-Dollar Reserve Percentage)), special deposit, insurance
     assessment or similar requirement against assets of, deposits with or for
     the account of, or credit extended by, any Bank (or its Applicable Lending
     Office) or shall impose on any Bank (or its Applicable Lending Office) or
     on the London interbank market any other condition affecting its Euro-
     Dollar Loans or Money Market LIBOR Loans, its Note, or its obligation to
     make Euro-Dollar Loans, and the result of any of the foregoing is to
     increase the cost to such Bank (or its Applicable Lending Office) of making
     or maintaining any Euro-Dollar Loan, or to reduce the amount of any sum
     received or receivable by such Bank (or its Applicable Lending Office)
     under this Agreement or under its Note with respect thereto, by an amount
     deemed by such Bank to be material, then, within 15 days after demand by
     such Bank (with a copy to the Lead Agent), which demand shall be
     accompanied by a certificate showing, in reasonable detail, the calculation
     of such amount or amounts, the Borrower shall pay to such Bank such
     additional amount or amounts as will compensate such Bank for such
     increased cost or reduction.

          (b) If any Bank shall have determined that, after the date hereof, the
     adoption of any applicable law, rule or regulation regarding capital
     adequacy, or any change in any such law, rule or regulation, or any change
     in the interpretation or administration thereof by any governmental
     authority, central bank or comparable agency charged with the
     interpretation or administration thereof, or any request or directive
     regarding capital adequacy (whether or not having the force of law) of any
     such authority, central bank or comparable agency, has or would have the
     effect of reducing the rate of return on capital of such Bank (or its
     Parent) as a consequence of such Bank's obligations hereunder to a level
     below that which such Bank (or its Parent) could have achieved but for such
     adoption, change, request or directive (taking into consideration its
     policies with respect to capital adequacy) by an amount deemed by such

                                       98
<PAGE>
 
     Bank to be material, then from time to time, within 15 days after demand by
     such Bank (with a copy to the Lead Agent), which demand shall be
     accompanied by a certificate showing, in reasonable detail, the calculation
     of such amount or amounts, the Borrower shall pay to such Bank such
     additional amount or amounts as will compensate such Bank (or its Parent)
     for such reduction.

          (c)  Each Bank will promptly notify the Borrower and the Lead Agent of
     any event of which it has knowledge, occurring after the date hereof, which
     will entitle such Bank to compensation pursuant to this Section and will
     designate a different Applicable Lending Office if such designation will
     avoid the need for, or reduce the amount of, such compensation and will
     not, in the judgment of such Bank, be otherwise disadvantageous to such
     Bank. A certificate of any Bank claiming compensation under this Section
     and setting forth the additional amount or amounts to be paid to it
     hereunder shall be conclusive in the absence of manifest error. In
     determining such amount, such Bank may use any reasonable averaging and
     attribution methods.

          Section 8.4.  Taxes.
                        -----  

          (a)  Any and all payments by the Borrower to or for the account of any
     Bank or the Lead Agent hereunder or under any other Loan Document shall be
     made free and clear of and without deduction for any and all present or
     future taxes, duties, levies, imposts, deductions, charges or withholdings,
     and all liabilities with respect thereto, excluding, in the case of each
                                               ---------
     Bank and the Lead Agent, taxes imposed on its income, and franchise taxes
     imposed on it, by the jurisdiction under the laws of which such Bank or the
     Lead Agent (as the case may be) is organized or any political subdivision
     thereof and, in the case of each Bank, taxes imposed on its income, and
     franchise or similar taxes imposed on it, by the jurisdiction of such
     Bank's Applicable Lending Office or any political subdivision thereof (and,
     if different from the jurisdiction of such Bank's Applicable Lending
     Office, the jurisdiction of the domicile of its Loans either established by
     the Bank pursuant to Section 9.12 or determined by the applicable taxing
     authorities)(all such non-excluded taxes, duties, levies, imposts,
     deductions, charges, withholdings and liabilities being hereinafter
     referred to as "Taxes").
                     -----

                                       99
<PAGE>
 
     If the Borrower shall be required by law to deduct any Taxes from or in
     respect of any sum payable hereunder or under any Note or Letter of Credit
     or participation therein to any Bank or the Lead Agent, (i) the sum payable
     shall be increased as necessary so that after making all required
     deductions (including deductions applicable to additional sums payable
     under this Section 8.4) such Bank, the Fronting Bank or the Lead Agent (as
     the case may be) receives an amount equal to the sum it would have received
     had no such deductions been made, (ii) the Borrower shall make such
     deductions, (iii) the Borrower shall pay the full amount deducted to the
     relevant taxation authority or other authority in accordance with
     applicable law and (iv) the Borrower shall furnish to the Lead Agent, at
     its address referred to in Section 9.1, the original or a certified copy of
     a receipt evidencing payment thereof.

          (b) In addition, the Borrower agrees to pay any present or future
     stamp or documentary taxes and any other excise or property taxes, or
     charges or similar levies which arise from any payment made hereunder or
     under any Note or Letter of Credit or participation therein or from the
     execution or delivery of, or otherwise with respect to, this Agreement or
     any Note or Letter of Credit or participation therein (hereinafter referred
     to as "Other Taxes").
           ------------   

          (c)  The Borrower agrees to indemnify each Bank, the Fronting Bank and
     the Lead Agent for the full amount of Taxes or Other Taxes (including,
     without limitation, any Taxes or Other Taxes imposed or asserted by any
     jurisdiction on amounts payable under this Section 8.4) paid by such Bank,
     the Fronting Bank or the Lead Agent (as the case may be) and any liability
     (including penalties, interest and expenses) arising therefrom or with
     respect thereto. Any payment required under this indemnification shall be
     made within 15 days from the date such Bank, the Fronting Bank or the Lead
     Agent (as the case may be) makes demand therefor.

          (d)  Each Bank organized under the laws of a jurisdiction outside the
     United States, on or prior to the date of its execution and delivery of
     this Agreement in the case of each Bank listed on the signature pages
     hereof and on or prior to the date on which it becomes a Bank in the case
     of each other Bank, and from time to

                                      100
<PAGE>
 
     time thereafter if requested in writing by the Borrower (but only so long
     as such Bank remains lawfully able to do so), shall provide the Borrower
     with Internal Revenue Service form 1001 or 4224, as appropriate, or any
     successor form prescribed by the Internal Revenue Service, certifying that
     such Bank is entitled to benefits under an income tax treaty to which the
     United States is a party which reduces the rate of withholding tax on
     payments of interest or certifying that the income receivable pursuant to
     this Agreement is effectively connected with the conduct of a trade or
     business in the United States. If the form provided by a Bank at the time
     such Bank first became a party to this Agreement or at any time thereafter
     (other than solely by reason of a change in United States law or a change
     in the terms of any treaty to which the United States is a party after the
     date hereof) indicates a United States interest withholding tax rate in
     excess of zero (or would have indicated such a withholding tax rate if such
     form had been submitted and completed accurately and completely and either
     was not submitted or was not completed accurately and completely), or if a
     Bank otherwise is subject to United States interest withholding tax at a
     rate in excess of zero at any time for any reason (other than solely by
     reason of a change in United States law or regulation or a change in any
     treaty to which the United States is a party after the date hereof),
     withholding tax at such rate shall be considered excluded from "Taxes" as
     defined in Section 8.4(a). In addition, any amount that otherwise would be
     considered "Taxes" or "Other Taxes" for purposes of this Section 8.4 shall
     be excluded therefrom if the Bank either has transferred the domicile of
     its Loans pursuant to Section 9.12 or changed the Applicable Lending Office
     with respect to such Loans and such amount would not have been incurred had
     such transfer or change not been made.

          (e)  For any period with respect to which a Bank has failed to provide
     the Borrower with the appropriate form pursuant to Section 8.4(d) (unless
     such failure is due to a change in treaty, law or regulation occurring
     subsequent to the date on which a form originally was required to be
     provided), such Bank shall not be entitled to indemnification under Section
     8.4(a) with respect to Taxes imposed by the United States; provided,
                                                                -------- 
     however, that should a Bank, which is otherwise exempt from or subject to a
     -------                                                                    
     reduced rate of withholding tax,

                                      101
<PAGE>
 
     become subject to Taxes because of its failure to deliver a form required
     hereunder, the Borrower shall take such steps as such Bank shall reasonably
     request to assist such Bank to recover such Taxes.

          (f)  If the Borrower is required to pay additional amounts to or for
     the account of any Bank pursuant to this Section 8.4, then such Bank will
     change the jurisdiction of its Applicable Lending Office so as to eliminate
     or reduce any such additional payment which may thereafter accrue if such
     change, in the judgment of such Bank, is not otherwise disadvantageous to
     such Bank.

          Section 8.5.  Base Rate Loans Substituted for Affected Euro-Dollar
                        ----------------------------------------------------
     Loans.  If (i) the obligation of any Bank to make, or convert outstanding
     -----
     Loans to, Euro-Dollar Loans has been suspended pursuant to Sections 8.1 or
     8.2 or (ii) any Bank has demanded compensation under Section 8.3 or 8.4
     with respect to its Euro-Dollar Loans and the Borrower shall, by at least
     five Euro-Dollar Business Days' prior notice to such Bank through the Lead
     Agent, have elected that the provisions of this Section shall apply to such
     Bank, then, unless and until such Bank notifies the Borrower that the
     circumstances giving rise to such suspension or demand for compensation no
     longer exist:

          (a)  all Loans which would otherwise be made by such Bank as Euro-
     Dollar Loans shall be made instead as Base Rate Loans (on which interest
     and principal shall be payable contemporaneously with the related Euro-
     Dollar Loans of the other Banks), and

          (b)  after each of its Euro-Dollar Loans has been repaid, all payments
     of principal which would otherwise be applied to repay such Euro-Dollar
     Loans shall be applied to repay its Base Rate Loans instead.

                                      102
<PAGE>
 
                                  ARTICLE IX

                                 MISCELLANEOUS

          Section 9.1.  Notices.  All notices, requests and other communications
                        -------
to any party hereunder shall be in writing (including bank wire, telex,
facsimile transmission or similar writing) and shall be given to such party: (x)
in the case of the Borrower or the Lead Agent, at its address or telecopy number
set forth on the signature pages hereof, together with copies thereof, in the
case of the Borrower, to Latham & Watkins, 633 West Fifth Street, Suite 4000,
Los Angeles, CA 90071, Attention: Glen B. Collyer, Esq., Telephone: (213) 485-
1234, Telecopy: (213) 891-8763, and in the case of the Lead Agent, to Skadden,
Arps, Slate, Meagher & Flom LLP, 919 Third Avenue, New York, New York 10022,
Attention: Martha Feltenstein, Esq., Telephone: (212) 735-2272, Telecopy: (212)
735-2000, (y) in the case of any Bank, at its address or telecopy number set
forth on the signature pages hereof or in its Administrative Questionnaire or
(z) in the case of any party, such other address or telecopy number as such
party may hereafter specify for the purpose by notice to the Lead Agent, the
Banks and the Borrower. Each such notice, request or other communication shall
be effective (i) if given by telecopy, when such telecopy is transmitted to the
telecopy number specified in this Section, (ii) if given by mail, 72 hours after
such communication is deposited in the mails with first class postage prepaid,
addressed as aforesaid or (iii) if given by any other means, when delivered at
the address specified in this Section; provided that notices to the Lead Agent
                                       --------                               
under Article II or Article VIII shall not be effective until received.

          Section 9.2.  No Waivers.  No failure or delay by the Lead Agent or
                        ----------
any Bank in exercising any right, power or privilege hereunder or under any Note
shall operate as a waiver thereof nor shall any single or partial exercise
thereof preclude any other or further exercise thereof or the exercise of any
other right, power or privilege. The rights and remedies herein provided shall
be cumulative and not exclusive of any rights or remedies provided by law.

                                      103
<PAGE>
 
          Section 9.3.  Expenses; Indemnification.
                        -------------------------  

          (a)  The Borrower shall pay (i) all reasonable out-of-pocket expenses
     of the Lead Agent (including, without limitation, reasonable fees and
     disbursements of special counsel Skadden, Arps, Slate, Meagher & Flom LLP,
     local counsel for the Lead Agent, and travel, site visits, third party
     reports (including Appraisals), mortgage recording taxes, environmental and
     engineering expenses), in connection with the preparation and
     administration of this Agreement, the Loan Documents and the documents and
     instruments referred to therein, the syndication of the Loans, any waiver
     or consent hereunder or any amendment or modification hereof or any Default
     or alleged Default hereunder and (ii) if an Event of Default occurs, all
     out-of-pocket expenses incurred by the Lead Agent and each Bank, including,
     without limitation, reasonable fees and disbursements of counsel for the
     Lead Agent, in connection with the enforcement of the Loan Documents and
     the instruments referred to therein and such Event of Default and
     collection, bankruptcy, insolvency and other enforcement proceedings
     resulting therefrom.

          (b)  The Borrower agrees to indemnify the Lead Agent and each Bank,
     their respective affiliates and the respective directors, officers, agents
     and employees of the foregoing (each an "Indemnitee") and hold each
                                              ----------
     Indemnitee harmless from and against any and all liabilities, losses,
     damages, costs and expenses of any kind, including, without limitation, the
     reasonable fees and disbursements of counsel and settlements and settlement
     costs, which may be incurred by such Indemnitee in connection with any
     investigative, administrative or judicial proceeding (whether or not such
     Indemnitee shall be designated a party thereto) that may at any time
     (including, without limitation, at any time following the payment of the
     Obligations) be imposed on, asserted against or incurred by any Indemnitee
     as a result of, or arising out of, or in any way related to or by reason
     of, (i) any of the transactions contemplated by the Loan Documents or the
     execution, delivery or performance of any Loan Document (including, without
     limitation, the Borrower's actual or proposed use of proceeds of the Loans,
     whether or not in compliance with the provisions hereof), (ii) any
     violation by the Borrower or the Environmental Affiliates of any applicable
     Environmental

                                      104
<PAGE>
 
     Law, (iii) any Environmental Claim arising out of the management, use,
     control, ownership or operation of property or assets by the Borrower or
     any of the Environmental Affiliates, including, without limitation, all on-
     site and off-site activities involving Material of Environmental Concern,
     (iv) the breach of any environmental representation or warranty set forth
     herein, (v) the grant to the Lead Agent and the Banks of any Lien in any
     property or assets of the Borrower or any stock or other equity interest in
     the Borrower, and (vi) the exercise by the Lead Agent and the Banks of
     their rights and remedies (including, without limitation, foreclosure)
     under any agreements creating any such Lien (but excluding, as to any
     Indemnitee, any such losses, liabilities, claims, damages, expenses,
     obligations, penalties, actions, judgments, suits, costs or disbursements
     incurred solely by reason of (i) the gross negligence or willful misconduct
     of such Indemnitee as finally determined by a court of competent
     jurisdiction or (ii) any investigative, administrative or judicial
     proceeding imposed or asserted against any Indemnitee by any bank
     regulatory agency or by any equity holder of such Indemnitee). The
     Borrower's obligations under this Section shall survive the termination of
     this Agreement and the payment of the Obligations.

          (c)  The Borrower shall pay, and hold the Lead Agent and each of the
     Banks harmless from and against, any and all present and future U.S. stamp,
     recording, transfer and other similar foreclosure related taxes with
     respect to the foregoing matters and hold the Lead Agent and each Bank
     harmless from and against any and all liabilities with respect to or
     resulting from any delay or omission (other than to the extent attributable
     to such Bank) to pay such taxes.

          Section 9.4.  Sharing of Set-Offs .  In addition to any rights now or
                        -------------------                                    
hereafter granted under applicable law or otherwise, and not by way of
limitation of any such rights, upon the occurrence and during the continuance of
any Event of Default, each Bank is hereby authorized at any time or from time to
time, without presentment, demand, protest or other notice of any kind to the
Borrower or to any other Person, any such notice being hereby expressly waived,
to set off and to appropriate and apply any and all deposits (general or
special, time or demand, provisional or final), other than

                                      105
<PAGE>
 
deposits held for the benefit of third parties, and any other indebtedness at
any time held or owing by such Bank (including, without limitation, by branches
and agencies of such Bank wherever located) to or for the credit or the account
of the Borrower against and on account of the Obligations of the Borrower then
due and payable to such Bank under this Agreement or under any of the other Loan
Documents, including, without limitation, all interests in Obligations purchased
by such Bank. Each Bank agrees that if it shall, by exercising any right of set-
off or counterclaim or otherwise, receive payment of a proportion of the
aggregate amount of principal and interest due with respect to any Note held by
it or Letter of Credit participated in by it, or, in the case of the Fronting
Bank, Letter of Credit issued by it, which is greater than the proportion
received by any other Bank or Letter of Credit issued or participated in by such
other Bank, in respect of the aggregate amount of principal and interest due
with respect to any Note held by such other Bank, the Bank receiving such
proportionately greater payment shall purchase such participations in the Notes
held by the other Banks or Letter of Credit issued or participated in by such
other Bank, and such other adjustments shall be made, as may be required so that
all such payments of principal and interest with respect to the Notes held by
the Banks or Letter of Credit issued or participated in by such other Banks
shall be shared by the Banks pro rata; provided that nothing in this Section
                                       --------
shall impair the right of any Bank to exercise any right of set-off or
counterclaim it may have and to apply the amount subject to such exercise to the
payment of indebtedness of the Borrower other than its indebtedness under the
Notes or the Letters of Credit. The Borrower agrees, to the fullest extent that
it may effectively do so under applicable law, that any holder of a
participation in a Note, whether or not acquired pursuant to the foregoing
arrangements, may exercise rights of set-off or counterclaim and other rights
with respect to such participation as fully as if such holder of a participation
were a direct creditor of the Borrower in the amount of such participation.

          Section 9.5.  Amendments and Waivers.  Any provision of this Agreement
                        ----------------------   
(including any of the financial covenants given by the Borrower pursuant to
Section 5.8), the Notes, the Letters of Credit or other Loan

                                      106
<PAGE>
 
Documents may be amended or waived if, but only if, such amendment or waiver is
in writing and is signed by the Borrower and the Required Banks (and, if the
rights or duties of the Lead Agent are affected thereby, by the Lead Agent);
provided that no such amendment or waiver shall, unless signed by all the Banks,
- --------
(i) increase or decrease the Commitment of any Bank (except for a ratable
decrease in the Commitments of all Banks) or subject any Bank to any additional
obligation, (ii) reduce the principal of or rate of interest on any Loan or any
fees specified herein, (iii) postpone the date fixed for any payment of
principal of or interest on any Loan or any fees hereunder or for any reduction
or termination of any Commitment, (iv) release the Guaranty or otherwise release
any other collateral, or (v) change the percentage of the Commitments or of the
aggregate unpaid principal amount of the Notes, or the number of Banks, which
shall be required for the Banks or any of them to take any action under this
Section or any other provision of this Agreement. Notwithstanding the foregoing,
no amendment, waiver or consent shall, unless in writing and signed by the
Designating Lender on behalf of its Designated Lender affected thereby, (a)
subject such Designated Lender to any additional obligations, (b) reduce the
principal of, interest on, or other amounts due with respect to, the Designated
Lender Note made payable to such Designated Lender, or (c) postpone any date
fixed for any payment of principal of, or interest on, or other amounts due with
respect to the Designated Lender Note made payable to the Designated Lender.

          Section 9.6.  Successors and Assigns.
                        ----------------------  

          (a)  The provisions of this Agreement shall be binding upon and inure
     to the benefit of the parties hereto and their respective successors and
     assigns, except that the Borrower may not assign or otherwise transfer any
     of its rights under this Agreement or the other Loan Documents without the
     prior written consent of all Banks.

          (b)  Any Bank may at any time grant to one or more banks or other
     institutions (each a "Participant") participating interests in its
                           -----------
     Commitment or any or all of its Loans. In the event of any such grant by a
     Bank of a participating interest to a Participant, whether or not upon
     notice to the Borrower and the Lead Agent, such

                                      107
<PAGE>
 
     Bank shall remain responsible for the performance of its obligations
     hereunder, and the Borrower and the Lead Agent shall continue to deal
     solely and directly with such Bank in connection with such Bank's rights
     and obligations under this Agreement. Any agreement pursuant to which any
     Bank may grant such a participating interest shall provide that such Bank
     shall retain the sole right and responsibility to enforce the obligations
     of the Borrower hereunder including, without limitation, the right to
     approve any amendment, modification or waiver of any provision of this
     Agreement; provided that such participation agreement may provide that such
                --------
     Bank will not agree to any modification, amendment or waiver of this
     Agreement described in clause (i), (ii), (iii) or (iv) of Section 9.5
     without the consent of the Participant. The Borrower agrees that each
     Participant shall, to the extent provided in its participation agreement,
     be entitled to the benefits of Article VIII with respect to its
     participating interest. An assignment or other transfer which is not
     permitted by subsection (c) or (d) below shall be given effect for purposes
     of this Agreement only to the extent of a participating interest granted in
     accordance with this subsection (b).

          (c)  Any Bank may at any time assign to one or more banks or other
     institutions (each an "Assignee") all, or a proportionate part of all, of
                            --------
     its rights and obligations under this Agreement, the Notes and the other
     Loan Documents, and such Assignee shall assume such rights and obligations,
     pursuant to an Assignment and Assumption Agreement in substantially the
     form of Exhibit D attached hereto executed by such Assignee and such
             ---------
     transferor Bank, with (and subject to) the subscribed consent of the Lead
     Agent, which consent shall not be unreasonably withheld, and, provided no
     Event of Default shall have occurred and be continuing, the Borrower, which
     consent shall not be unreasonably withheld or delayed. Upon execution and
     delivery of such instrument and payment by such Assignee to such transferor
     Bank of an amount equal to the purchase price agreed between such
     transferor Bank and such Assignee, such Assignee shall be a Bank party to
     this Agreement and shall have all the rights and obligations of a Bank with
     a Commitment as set forth in such instrument of assumption, and the
     transferor Bank shall be released from its obligations hereunder to a
     corresponding extent, and no further consent or action by any party shall
     be re-

                                      108
<PAGE>
 
     quired. Upon the consummation of any assignment pursuant to this subsection
     (c), the transferor Bank, the Lead Agent and the Borrower shall make
     appropriate arrangements so that, if required, a new Note or Notes are
     issued to the Assignee. In connection with any such assignment, the
     transferor Bank shall pay to the Lead Agent an administrative fee for
     processing such assignment in the amount of $2,500. If the Assignee is not
     incorporated under the laws of the United States of America or a state
     thereof, it shall deliver to the Borrower and the Lead Agent certification
     as to exemption from deduction or withholding of any United States federal
     income taxes in accordance with Section 8.4.

          (d)  Any Bank (each, a "Designating Lender") may at any time designate
                                  ------------------
     one Designated Lender to fund Money Market Loans on behalf of such
     Designating Lender subject to the terms of this Section 9.6(d) and the
     provisions in Section 9.6(b) and (c) shall not apply to such designation.
     No Bank may designate more than one (1) Designated Lender. The parties to
     each such designation shall execute and deliver to the Lead Agent for its
     acceptance a Designation Agreement. Upon such receipt of an appropriately
     completed Designation Agreement executed by a Designating Lender and a
     designee representing that it is a Designated Lender, the Lead Agent will
     accept such Designation Agreement and will give prompt notice thereof to
     the Borrower, whereupon, (i) the Borrower shall execute and deliver to the
     Designating Bank a Designated Lender Note payable to the order of the
     Designated Lender, (ii) from and after the effective date specified in the
     Designation Agreement, the Designated Lender shall become a party to this
     Agreement with a right (subject to the provisions of Section 2.3(b)) to
     make Money Market Loans on behalf of its Designating Lender pursuant to
     Section 2.3 after the Borrower has accepted a Money Market Loan (or portion
     thereof) of the Designating Lender, and (iii) the Designated Lender shall
     not be required to make payments with respect to any obligations in this
     Agreement except to the extent of excess cash flow of such Designated
     Lender which is not otherwise required to repay obligations of such
     Designated Lender which are then due and payable; provided, however, that
     regardless of such designation and assumption by the Designated Lender, the
     Designating Lender shall be and remain obligated to the Borrower and the
     Banks for each and every of the obligations of the

                                      109
<PAGE>
 
     Designating Lender and its related Designated Lender with respect to this
     Agreement, including, without limitation, any indemnification obligations
     under Section 7.6 hereof and any sums otherwise payable to the Borrower by
     the Designated Lender. Each Designating Lender shall serve as the
     administrative agent of the Designated Lender and shall on behalf of, and
     to the exclusion of, the Designated Lender: (i) receive any and all
     payments made for the benefit of the Designated Lender and (ii) give and
     receive all communications and notices and take all actions hereunder,
     including, without limitation, votes, approvals, waivers, consents and
     amendments under or relating to this Agreement and the other Loan
     Documents. Any such notice, communication, vote, approval, waiver, consent
     or amendment shall be signed by the Designating Lender as administrative
     agent for the Designated Lender and shall not be signed by the Designated
     Lender on its own behalf and shall be binding upon the Designated Lender to
     the same extent as if signed by the Designated Lender on its own behalf.
     The Borrower, the Lead Agent, and the Banks may rely thereon without any
     requirement that the Designated Lender sign or acknowledge the same. No
     Designated Lender may assign or transfer all or any portion of its interest
     hereunder or under any other Loan Document, other than assignments to the
     Designating Lender which originally designated such Designated Lender or
     otherwise in accordance with the provisions of Section 9.6(b) and (c).

          (e)  Any Bank may at any time assign all or any portion of its rights
     under this Agreement and its Note and the Letter(s) of Credit participated
     in by such Bank or, in the case of the Fronting Bank, issued by it, to a
     Federal Reserve Bank. No such assignment shall release the transferor Bank
     from its obligations hereunder.

          (f)  No Assignee, Participant or other transferee of any Bank's rights
     shall be entitled to receive any greater payment under Section 8.3 or 8.4
     than such Bank would have been entitled to receive with respect to the
     rights transferred, unless such transfer is made with the Borrower's prior
     written consent or by reason of the provisions of Section 8.2, 8.3 or 8.4
     requiring such Bank to designate a different Applicable Lending Office
     under certain circumstances or at a time when the

                                      110
<PAGE>
 
     circumstances giving rise to such greater payment did not exist.

          Section 9.7.  Governing Law; Submission to Jurisdiction.
                        -----------------------------------------  

          (a)  THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS AND THE RIGHTS AND
     OBLIGATIONS OF THE PARTIES HEREUNDER AND THEREUNDER SHALL BE CONSTRUED IN
     ACCORDANCE WITH AND BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK
     (WITHOUT GIVING EFFECT TO THE PRINCIPLES THEREOF RELATING TO CONFLICTS OF
     LAW).

          (b)  Any legal action or proceeding with respect to this Agreement or
     any other Loan Document and any action for enforcement of any judgment in
     respect thereof may be brought in the courts of the State of New York or of
     the United States of America for the Southern District of New York, and, by
     execution and delivery of this Agreement, the Borrower hereby accepts for
     itself and in respect of its property, generally and unconditionally, the
     non-exclusive jurisdiction of the aforesaid courts and appellate courts
     from any thereof. The Borrower irrevocably consents to the service of
     process out of any of the aforementioned courts in any such action or
     proceeding by the hand delivery, or mailing of copies thereof by registered
     or certified mail, postage prepaid, to the Borrower at its address set
     forth below. The Borrower hereby irrevocably waives any objection which it
     may now or hereafter have to the laying of venue of any of the aforesaid
     actions or proceedings arising out of or in connection with this Agreement
     or any other Loan Document brought in the courts referred to above and
     hereby further irrevocably waives and agrees not to plead or claim in any
     such court that any such action or proceeding brought in any such court has
     been brought in an inconvenient forum. Nothing herein shall affect the
     right of the Lead Agent, any Bank or any holder of a Note to serve process
     in any other manner permitted by law or to commence legal proceedings or
     otherwise proceed against the Borrower in any other jurisdiction.

          Section 9.8.  Marshaling; Recapture.  Neither the Lead Agent nor any
                        ---------------------
Bank shall be under any obligation to marshal any assets in favor of the
Borrower or any other party or against or in payment of any or all

                                      111
<PAGE>
 
of the Obligations. To the extent any Bank receives any payment by or on behalf
of the Borrower, which payment or any part thereof is subsequently invalidated,
declared to be fraudulent or preferential, set aside or required to be repaid to
the Borrower or its estate, trustee, receiver, custodian or any other party
under any bankruptcy law, state or federal law, common law or equitable cause,
then to the extent of such payment or repayment, the Obligation or part thereof
which has been paid, reduced or satisfied by the amount so repaid shall be
reinstated by the amount so repaid and shall be included within the liabilities
of the Borrower to such Bank as of the date such initial payment, reduction or
satisfaction occurred.

         Section 9.9.  Counterparts; Integration; Effectiveness.  This Agreement
                       ----------------------------------------
may be signed in any number of counterparts, each of which shall be an original,
with the same effect as if the signatures thereto and hereto were upon the same
instrument.  This Agreement constitutes the entire agreement and understanding
among the parties hereto and supersedes any and all prior agreements and
understandings, oral or written, relating to the subject matter hereof.  This
Agreement shall become effective upon receipt by the Lead Agent of counterparts
hereof signed by each of the parties hereto (or, in the case of any party as to
which an executed counterpart shall not have been received, receipt by the Lead
Agent in form satisfactory to it of telegraphic, telex or other written
confirmation from such party of execution of a counterpart hereof by such
party).

          Section 9.10.  WAIVER OF JURY TRIAL.  EACH OF THE BORROWER, THE LEAD
                         --------------------                                  
AGENT AND THE BANKS HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY
IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED HEREBY.

          Section 9.11.  Survival.  All indemnities set forth herein shall
                         --------
survive the execution and delivery of this Agreement and the other Loan
Documents and the making and repayment of the Loans hereunder.

          Section 9.12.  Domicile of Loans.  Subject to the provisions of
                         -----------------
Article VIII, each Bank may transfer and carry its Loans at, to or for the
account of any

                                      112
<PAGE>
 
domestic or foreign branch office, subsidiary or affiliate of such Bank.

          Section 9.13.  Limitation of Liability.  No claim may be made by the
                         -----------------------                               
Borrower or any other Person against the Lead Agent or any Bank or the
affiliates, directors, officers, employees, attorneys or agent of any of them
for any consequential or punitive damages in respect of any claim for breach of
contract or any other theory of liability arising out of or related to the
transactions contemplated by this Agreement or by the other Loan Documents, or
any act, omission or event occurring in connection therewith; and the Borrower
hereby waives, releases and agrees not to sue upon any claim for any such
damages, whether or not accrued and whether or not known or suspected to exist
in its favor.

          Section 9.14.  No Bankruptcy Proceedings .  Each of the Borrower, the
                         -------------------------                             
Banks, and the Lead Agent hereby agrees that it will not institute against any
Designated Lender or join any other Person in instituting against any Designated
Lender any bankruptcy, reorganization, arrangement, insolvency or liquidation
proceeding under any federal or state bankruptcy or similar law, until the later
to occur of (i) one year and one day after the payment in full of the latest
maturing commercial paper note issued by such Designated Lender and (ii) the
Maturity Date.

                                      113
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.

                         KILROY REALTY, L.P., a Delaware 
                         limited partnership

                         By:  Kilroy Realty Corporation, a Maryland corporation,
                              its general partner


                              By:  /s/ Tyler H. Rose 
                                   ----------------------------------
                                   Name:  Tyler H. Rose
                                   Title: Senior Vice President and Treasurer
Commitments

$40,000,000                   MORGAN GUARANTY TRUST COMPANY
                                OF NEW YORK


                              By:  /s/ Timothy O'Donovan
                                   ----------------------------------
                                   Name:  Timothy O'Donovan
                                   Title: Vice President

                                      114
<PAGE>
 
$35,000,000                   BANK OF MONTREAL, as Bank and 
                              Co-Agent


                              By:  /s/ John T. Mead, Jr.
                                   ----------------------------------
                                   Name:  JOHN T. MEAD, JR.
                                   Title: DIRECTOR

                                      115
<PAGE>
 
$35,000,000                    DRESDNER BANK AG, NEW YORK
                               BRANCH AND GRAND CAYMAN BRANCH, 
                               as Bank and Co-Agent


                               By: /s/ John W. Sweeney
                                   ----------------------------------
                                     Name:  JOHN W. SWEENEY
                                     Title: ASSISTANT VICE PRESIDENT


                              By:  /s/ Brigitte Sacin
                                   ----------------------------------
                                     Name:  BRIGITTE SACIN
                                     Title: Assistant Treasurer

                                      116
<PAGE>
 
$35,000,000                    PNC BANK, NATIONAL ASSOCIATION,
                               as Bank and as Agent
                                           


                              By:  /s/ Paul Jamiolkowski
                                   ----------------------------------
                                     Name:  Paul Jamiolkowski
                                     Title: Asst. Vice-President

                                      117
<PAGE>
 
$35,000,000                   COMMERZBANK AKTIENGESELLSCHAFT, 
                              LOS ANGELES BRANCH, as Bank and 
                              as Agent


                              By:  /s/ Christine H. Finkel 
                                   ---------------------------------- 
                                   Name:  Christine H. Finkel
                                   Title: Assistant Vice President


                              By:  /s/ David Buettner
                                   ----------------------------------
                                   Name:  David Buettner
                                   Title: Assistant Treasurer

                                      118
<PAGE>
 
$35,000,000                   UNION BANK OF CALIFORNIA, as
                              Bank and as Agent


                              By:  /s/ John Bauer
                                   ----------------------------------
                                   Name:  John Bauer
                                   Title: Vice President

                                      119
<PAGE>
 
$25,000,000                   KEYBANK NATIONAL ASSOCIATION


                              By:  /s/ Mary Ellen Fowler
                                   ----------------------------------
                                   Name:  Mary Ellen Fowler
                                   Title: Vice President

                                      120
<PAGE>
 
$25,000,000                   FIRST UNION BANK


                              By: /s/ Cynthia A. Brown
                                  -----------------------------------
                                   Name:
                                   Title: Vice President

                                      121
<PAGE>
 
$25,000,000                   MELLON BANK, N.A.


                              By:  /s/ Allan C. Kirkman
                                   ----------------------------------
                                   Name:  ALLAN C. KIRKMAN
                                   Title: Executive Vice President

                                      122
<PAGE>
 
$25,000,000                   SUMMIT BANK


                              By:  /s/ Amy L. Brown
                                   ----------------------------------
                                   Name:  Amy L. Brown
                                   Title: Regional V.P.

                                      123
<PAGE>
 
$20,000,000                   THE BANK OF NOVA SCOTIA, ACTING
                              THROUGH ITS SAN FRANCISCO 
                              AGENCY

                              By:  /s/ Lorne Ogmundson
                                   ----------------------------------
                                   Name:  Lorne Ogmundson
                                   Title: Office Head of Real Estate

                                      124
<PAGE>
 
$15,000,000                   KBC BANK N.V.


                              By:  /s/ Robert Snauffer
                                   ----------------------------------
                                   Name:  ROBERT SNAUFFER
                                   Title: FIRST VICE PRESIDENT


                              By:  __________________________
                                   Name:  MICHAEL V. CURRAN
                                   Title: VICE PRESIDENT

Total Commitments
- -----------------

$350,000,000.00

                                      125
<PAGE>
 
                              MORGAN GUARANTY TRUST COMPANY
                                OF NEW YORK, as Lead Agent


                               By:  /s/ Timothy V. O'Donovan
                                    ---------------------------------
                                    Name:  Timothy V. O'Donovan
                                    Title: Vice President

                              60 Wall Street                 
                              New York, New York 10260-0060  
                              Attention:  Tim O'Donovan      
                              Telephone number: (212) 648-8127
                              Telecopy number: (212) 648-5336
                                                             
                              Domestic and Euro-Currency     
                              Lending Office:                
                              Nassau, Bahamas Office         
                              c/o J.P. Morgan Services Inc.  
                              500 Stanton Christiana Road    
                              Newark, Delaware 19173-2107    
                              Attention: Bill Lamb           
                              Telecopy number: (302) 634-4222 

                                      126
<PAGE>
 
                                   EXHIBIT A
                                   ---------

                                      NOTE


______________                                                New York, New York

                                                                 October 9, 1998


          For value received, KILROY REALTY, L.P., a Delaware limited
partnership (the "Borrower") promises to pay to the order of _______________
                  --------                                                  
(the "Bank"), for the account of its Applicable Lending Office, the unpaid
      ----                                                                
principal amount of each Loan made by the Bank to the Borrower pursuant to the
Credit Agreement referred to below on the Maturity Date.  The Borrower promises
to pay interest on the unpaid principal amount of each such Loan on the dates
and at the rate or rates provided for in the Credit Agreement.  All such
payments of principal and interest shall be made in lawful money of the United
States in Federal or other immediately available funds at the office of Lead
Agent under the Credit Agreement (as defined below).

          All Loans made by the Bank, the respective types and maturities
thereof and all repayments of the principal thereof shall be recorded by the
Bank and, if the Bank so elects in connection with any transfer or enforcement
hereof, appropriate notations to evidence the foregoing information with respect
to each such Loan then outstanding may be endorsed by the Bank on the schedule
attached hereto, or on a continuation of such schedule attached to and made a
part hereof; provided that the failure of the Bank to make any such recordation
             --------                                                          
or endorsement shall not affect the obligations of the Borrower hereunder or
under the Credit Agreement.

          This Note is one of the Notes referred to in the Amended and Restated
Revolving Credit Agreement, dated as of October 9, 1998, among the Borrower, the
Banks party thereto, Morgan Guaranty Trust Company of New York, as Lead Agent,
and Bank of Montreal, Commerzbank Aktiengesellschaft, Los Angeles Branch,
Dresdner Bank AG, New York Branch and Grand Cayman Branch, PNC Bank, National
Association and Union Bank of California, as Co-Agents (as the same may be
amended from time to time, the "Credit Agreement").
                                ----------------   

                                      A-1
<PAGE>
 
          Terms defined in the Credit Agreement are used herein with the same
meanings.  Reference is made to the Credit Agreement for provisions for the
prepayment hereof and the acceleration of the maturity hereof.

                         KILROY REALTY, L.P., a Delaware 
                         limited partnership

                         By:  Kilroy Realty Corporation, a Maryland corporation,
                              its general partner


                              By:  _______________________________
                                    Name:  Tyler H. Rose
                                    Title:  Senior Vice 
                                    President and Treasurer

                                      A-2
<PAGE>
 
                                 Note (cont'd)


                        LOANS AND PAYMENTS OF PRINCIPAL


_______________________________________________________________________________

                                       Amount of
           Amount of      Type of      Principal      Maturity      Notation
Date         Loan          Loan         Repaid          Date        Made By 
_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

                                      A-3
<PAGE>
 
                                  EXHIBIT A-1
                                  -----------
                                     NOTE

                                                              New York, New York
$______________


                                                                _October 9, 1998


          For value received, KILROY REALTY, L.P., a Delaware limited
partnership (the "Borrower") promises to pay to the order of _______________
                  --------                                                  
(the "Bank"), for the account of its Applicable Lending Office, the unpaid
      ----                                                                
principal amount of each Loan made by the Bank to the Borrower pursuant to the
Credit Agreement referred to below on the Maturity Date.  The Borrower promises
to pay interest on the unpaid principal amount of each such Loan on the dates
and at the rate or rates provided for in the Credit Agreement.  All such
payments of principal and interest shall be made in lawful money of the United
States in Federal or other immediately available funds at the office of Lead
Agent under the Credit Agreement (as defined below).

          All Loans made by the Bank, the respective types and maturities
thereof and all repayments of the principal thereof shall be recorded by the
Bank and, if the Bank so elects in connection with any transfer or enforcement
hereof, appropriate notations to evidence the foregoing information with respect
to each such Loan then outstanding may be endorsed by the Bank on the schedule
attached hereto, or on a continuation of such schedule attached to and made a
part hereof; provided that the failure of the Bank to make any such recordation
             --------                                                          
or endorsement shall not affect the obligations of the Borrower hereunder or
under the Credit Agreement.

          This Note is one of the Designated Lender Notes referred to in the
Amended and Restated Revolving Credit Agreement, dated as of October 9, 1998,
among the Borrower, the Banks party thereto, and Morgan Guaranty Trust Company
of New York, as Lead Agent, and Bank of Montreal, Commerzbank
Aktiengesellschaft, Los Angeles Branch, Dresdner Bank AG, New York Branch and
Grand Cayman Branch, PNC Bank, National Association and Union Bank of
California, as Co-Agents  (as the same may be amended from time to time, the
                                                                            
"Credit Agreement").
- -----------------   

                                     A-1-1
<PAGE>
 
          Terms defined in the Credit Agreement are used herein with the same
meanings.  Reference is made to the Credit Agreement for provisions for the
prepayment hereof and the acceleration of the maturity hereof.

                    KILROY REALTY, L.P., a Delaware limited partnership

                    By:  Kilroy Realty Corporation, a Maryland 
                         corporation, its general partner
                              


                         By:  ________________________
                              Name:  Tyler H. Rose
                              Title:  Senior Vice President 
                              and Treasurer

                                     A-1-2
<PAGE>
 
                                 Note (cont'd)


                        LOANS AND PAYMENTS OF PRINCIPAL


_______________________________________________________________________________

                                        Amount of
           Amount of      Type of       Principal       Maturity       Notation
Date         Loan           Loan         Repaid           Date         Made By
_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

                                     A-1-3
<PAGE>
 
                         EXHIBIT B
                         ---------

             Unencumbered Asset Pool Properties
                      (Fee Interests)

       PROPERTY                          LOCATION
       --------                          --------

     821 S. Rockefeller  Ontario, CA     Ontario, CA
     Walmart                             Las Vegas, NV
     ValPak                              Las Vegas, NV
     199 & 201 N. Sunrise Ave (PM)       Roseville, CA
     1961 Concourse Dr. (PM)             San Jose, CA
     1710 Fortune Dr. (Radius) (PM)      San Jose, CA
     Giltspur Building                   Garden Grove, CA
     1951 E. Carnegie Ave.               Santa Ana, CA
     3125 E. Coronado (SPM)              Anaheim, CA
     Miraloma                            Anaheim, CA
     1675 MacArthur                      Cosa Mesa, CA
     14831 Franklin Ave (PM)             Tustin, CA
     2055 SE Main Street (PM)            Irvine, CA
     Gothard Business Park               Huntington Beach, CA
     184-20 Technology Drive             Irvine Spectrum, CA
     Dimension Business Park             El Toro, CA
     Garden Grove Industrial
       Properties                        Garden Grove, CA
     Brea Industrial Properties          Brea, CA
     9451 Toledo Way (Mazda)             Irvine, CA
     17150 Von Karman                    Irvine, CA
     7421 Orangewood (Perkin-Elmer)      Garden Grove, CA
     5325 E. Hunder Ave.
       (Clothestime Bldg.)               Anaheim, CA
     12400 Industry Street               Garden Grove, CA
     FFF Enterprises                     San Diego, CA
     6828 Nancy Ridge Dr. (PM)           San Diego, CA
     Walnut Park Bus. Ctr.               Diamond Bar, CA
     4880 Colt Street                    Ventura, CA
     4351 Latham (Hutton)                Riverside, CA
     4361 Latham (Hutton)                Riverside, CA
     601 Valencia (Hutton)               Brea, CA
     Anaheim Corp. Center                Anaheim, CA
     Pacific Park                        Aliso Viejo, CA
     9401 Toledo Way (Mazda)             Irvine, CA
     2501 Pullman (Caltrans)             Santa Ana, CA
     111 Pacifica                        Irvine Spectrum, CA
     701 - 741 E. Ball Road
       (Occidental)                      Anaheim, CA
     Applied Micro Circuits              San Diego, CA
     Arrowhead                           San Diego, CA
     Industrial Computer                 San Diego, CA
     23600 - 610 Telo Avenue             Torrance, CA
     525 North Brand                     Glendale, CA
     5151 - 5155 Camino Ruiz             Camarillo, CA
     26541 Agoura Road (ARC)             Calabasas, CA
     3130 Wilshire Blvd.                 Santa Monica, CA
     2100 Colorado Avenue (Sony)         Santa Monica, CA
     1633 26th Street (Fujita)           Santa Monica, CA
     Alton Business Center               Irvine, CA
     Fullerton Business Center           Fullerton, CA
     501 Santa Monica                    Santa Monica, CA
     12150 Olympic Blvd.                 Los Angeles, CA

                                      B-1
<PAGE>
 
                                   EXHIBIT C
                                   ---------


                      Unencumbered Asset Pool Properties
                             (Leasehold Interests)


     Kilroy Airport Center,
       (Long Beach)                      Long Beach, CA

                                      C-1
<PAGE>
 
                                   EXHIBIT D
                                   ---------

                       FORM OF ASSIGNMENT AND ASSUMPTION


                      ASSIGNMENT AND ASSUMPTION AGREEMENT
                      -----------------------------------


          AGREEMENT dated as of __________, 199_ among [ASSIGNOR] (the
"Assignor"), [ASSIGNEE] (the "Assignee"), KILROY REALTY, L.P. (the "Borrower")
and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Lead Agent (the "Agent").

                              W I T N E S S E T H
                              -------------------

          WHEREAS, this Assignment and Assumption Agreement (the "Assignment")
relates to the Amended and Restated Revolving Credit Agreement, dated as of
October 9, 1998 (the "Loan Agreement") among the Borrower, the Assignor and the
other Banks party thereto, as Banks, and the Agent;

          WHEREAS, as provided under the Loan Agreement, the Assignor has a
Commitment to make Loans to the Borrower in an aggregate principal amount at any
time outstanding not to exceed $__________;

          WHEREAS, Loans made to the Borrower by the Assignor under the Loan
Agreement in the aggregate principal amount of $____________ are outstanding at
the date hereof; and

          WHEREAS, the Assignor proposes to assign to the Assignee all of the
rights of the Assignor under the Loan Agreement in respect of a portion of its
Commitment thereunder in an amount equal to $__________ (the "Assigned Amount"),
together with a corresponding portion of its outstanding Loans, and the Assignee
proposes to accept assignment of such rights and assume the corresponding
obligations from the Assignor on such terms;

          NOW, THEREFORE, in consideration of the foregoing and the mutual
agreements contained herein, the parties hereto agree as follows:

          SECTION 1.  Definitions.  All capitalized terms not otherwise defined
                      -----------                                              
herein shall have the respective meanings set forth in the Loan Agreement.

          SECTION 2.  Assignment.  The Assignor hereby assigns and sells to the
                      ----------                                               
Assignee all of the rights of the Assignor under the Loan Agreement to the
extent of the Assigned Amount, and the Assignee hereby accepts such assignment
from the Assignor and assumes all of the obligations of the Assignor under the
Loan Agreement to the extent of the Assigned Amount, including the

                                      D-1
<PAGE>
 
purchase from the Assignor of the corresponding portion of the principal amount
of the Loans made by the Assignor outstanding at the date hereof. Upon the
execution and delivery hereof by the Assignor, the Assignee, the Borrower and
the Agent and the payment of the amounts specified in Section 3 required to be
paid on the date hereof (i) the Assignee shall, as of the date hereof, succeed
to the rights and be obligated to perform the obligations of a Bank under the
Loan Agreement with a Commitment in an amount equal to the Assigned Amount, and
(ii) the Commitment of the Assignor shall, as of the date hereof, be reduced by
a like amount and the Assignor released from its obligations under the Loan
Agreement to the extent such obligations have been assumed by the Assignee. The
assignment provided for herein shall be without recourse to the Assignor.

          SECTION 3.  Payments.  As consideration for the assignment and sale
                      --------                                               
contemplated in Section 2 hereof, the Assignee shall pay to the Assignor on the
date hereof in Federal funds the amount heretofore agreed between them./1/ It is
understood that Commitment Fees accrued to the date hereof are for the account
of the Assignor and such fees accruing from and including the date hereof are
for the account of the Assignee. Each of the Assignor and the Assignee hereby
agrees that if it receives any amount under the Loan Agreement which is for the
account of the other party hereto, it shall receive the same for the account of
such other party to the extent of such other party's interest therein and shall
promptly pay the same to such other party.

          SECTION 4.  Consent of the Borrower and the Agent.  This Agreement is
                      -------------------------------------                    
conditioned upon the written consent of the Borrower and the consent of the
Agent pursuant to section 9.6(c) of the Loan Agreement.  The execution of this
Agreement by the Borrower and the Agent is evidence of the required consents.
Pursuant to Section 9.6(c) the Borrower agrees to execute and deliver a Note
payable to the order of the Assignee to evidence the assignment and assumption
provided for herein.

          SECTION 5.  Non-Reliance on Assignor.  The Assignor makes no
                      ------------------------                        
representation or warranty in connection with, and shall have no responsibility
with respect to, the solvency, financial condition, or statements of the
Borrower, or the validity and enforceability of the obligations of the Borrower
in respect of the Loan Agreement or any Note.  The Assignee acknowledges that it
has, independently

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

  /1/     The amount should combine principal together with accrued interest and
          breakage compensation, if any, to be paid by the Assignee, net of any
          portion of any upfront fee to be paid by the Assignor to the Assignee.
          It may be preferable in an appropriate case to specify these amounts
          generically or by formula rather than as a fixed sum.

                                      D-2
<PAGE>
 
and without reliance on the Assignor, and based on such documents and
information as it has deemed appropriate, made its own credit analysis and
decision to enter into this Agreement and will continue to be responsible for
making its own independent appraisal of the business, affairs and financial
condition of the Borrower.

          SECTION 6.  Governing Law.  This Agreement shall be governed by and
                      -------------                                          
construed in accordance with the external laws of the State of New York

                                      D-3
<PAGE>
 
          SECTION 7.  Counterparts.  This Agreement may be signed in any number
                      ------------                                             
of counterparts, each of which shall be an original, with the same effect as if
the signatures thereto and hereto were upon the same instrument.

          IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and delivered by their duly authorized officers as of the date first
above written.

                               [ASSIGNOR]


                               By:_______________________
                                  Name:
                                  Title:

                               [ASSIGNEE]


                               By:________________________
                                  Name:
                                  Title:

 

                               MORGAN GUARANTY TRUST COMPANY OF NEW
                                    YORK


                               By:________________________
                                  Name:
                                  Title:

CONSENTED TO:

KILROY REALTY, L.P.

By:  Kilroy Realty Corporation,
     its general partner


     By:  ____________________
          Name:  Tyler H. Rose
          Title:  Senior Vice President and Treasurer

                                      D-4
<PAGE>
 
                                                                       EXHIBIT E


                      Form of Money Market Quote Request
                      ----------------------------------



                                                   [Date]


To:       Morgan Guaranty Trust Company of New York (the "Lead Agent")

From:     Kilroy Realty, L.P.

Re:       Amended and Restated Revolving Credit Agreement (the "Credit
          Agreement") dated as of October 9, 1998 among Kilroy Realty, L.P., the
          Banks parties thereto and the Lead Agent

          We hereby give notice pursuant to Section 2.3 of the Credit Agreement
that we request Money Market Quotes for the following proposed Money Market
Borrowing(s):


Date of Borrowing:  __________________

Principal Amount/2/              Interest Period/3/
- -------------------              ------------------
$


          Such Money Market Quotes should offer a Money Market [Margin]
[Absolute Rate]. [The applicable base rate is the London Interbank Offered
Rate.]

          The funding of Money Market Loans made in connection with this Money
Market Quote Request [may/may not] be made by Designated Lenders.

          Terms used herein have the meanings assigned to them in the Credit
Agreement.

                          Kilroy Realty, L.P.

                          By:  Kilroy Realty Corporation

_________________________
/2/  Amount must be $10,000,000 or a larger multiple of $500,000.
                                                             
/3/  Not less than one month (LIBOR Auction) or not less than 30 days (Absolute
Rate Auction), subject to the provisions of the definition of Interest Period.

                                      E-1
<PAGE>
 
                                         By:________________________
                                            Name:
                                            Title:
<PAGE>
 
                                                                       EXHIBIT F


                  Form of Invitation for Money Market Quotes
                  ------------------------------------------



To:  [Name of Bank]

Re:  Invitation for Money Market Quotes to Kilroy Realty, L.P. (the "Borrower")


          Pursuant to Section 2.3 of the Amended and Restated Revolving Credit
Agreement dated as of October 9, 1998 among Kilroy Realty, L.P., the Banks
parties thereto and the undersigned, as Lead Agent, we are pleased on behalf of
the Borrower to invite you to submit Money Market Quotes to the Borrower for the
following proposed Money Market Borrowing(s):


Date of Borrowing:  __________________

Principal Amount                     Interest Period
- ----------------                     ---------------

$


          Such Money Market Quotes should offer a Money Market [Margin]
[Absolute Rate].  [The applicable base rate is the London Interbank Offered
Rate.]

          Please respond to this invitation by no later than 10:00 A.M. (New
York City time) on [date].

                               MORGAN GUARANTY TRUST COMPANY
                                 OF NEW YORK, as Lead Agent


                               By______________________
                                  Authorized Officer

                                      F-1
<PAGE>
 
                                                                       EXHIBIT G


                          Form of Money Market Quote
                          --------------------------


To:  Morgan Guaranty Trust Company of New York, as Lead Agent

Re:  Money Market Quote to Kilroy Realty, L.P. (the "Borrower")

          In response to your invitation on behalf of the Borrower dated
_____________, 19__, we hereby make the following Money Market Quote on the
following terms:

1.   Quoting Bank:  ________________________________
2.   Person to contact at Quoting Bank:

     _____________________________
3.   Date of Borrowing: ____________________*
4.   We hereby offer to make Money Market Loan(s) in the following principal
     amounts, for the following Interest Periods and at the following rates:


Principal Interest   Money Market
Amount**  Period***  [Margin****] [Absolute Rate*****]
- --------  ---------  ---------------------------------

$

$

     [Provided, that the aggregate principal amount of Money Market Loans for
     which the above offers may be accepted shall not exceed $____________.]**

          We understand and agree that the offer(s) set forth above, subject to
     the satisfaction of the applicable conditions set forth in the Amended and
     Restated Revolving Credit Agreement dated as of October 9, 1998 among
     Kilroy Realty, L.P., the Banks parties thereto and yourselves, as Lead
     Agent, irrevocably obligates us to make the Money Market Loan(s) for which
     any offer(s) are accepted, in whole or in part.


                               Very truly yours,

                               [NAME OF BANK]


Dated:_______________          By:__________________________
                                  Authorized Officer

                                      G-1
<PAGE>
 
                                                                       EXHIBIT H


                         FORM OF DESIGNATION AGREEMENT
                         -----------------------------

                          Dated _____________, 199___


     Reference is made to that certain Amended and Restated Revolving Credit
Agreement dated as of October 9, 1998 (as amended, supplemented or otherwise
modified from time to time, the "Credit Agreement") among KILROY REALTY, L.P.,
the banks parties thereto, and MORGAN GUARANTY TRUST COMPANY OF NEW YORK (the
"Lead Agent"), as Lead Agent.  Terms defined in the Credit Agreement are used
- -----------                                                                  
herein with the same meaning.

     [NAME OF DESIGNOR] (the "Designor"), [NAME OF DESIGNEE] (the "Designee")
and the Lead Agent agree as follows:

     1.  The Designor hereby designates the Designee, and the Designee hereby
accepts such designation, to have a right to make Money Market Loans pursuant to
Article III of the Credit Agreement.  Any assignment by Designor to Designee of
its rights to make a Money Market Loan pursuant to such Article III shall be
effective at the time of the funding of such Money Market Loan and not before
such time.

     2.  Except as set forth in Section 7 below, the Designor makes no
representation or warranty and assumes no responsibility pursuant to this
Designation Agreement with respect to (a) any statements, warranties or
representations made in or in connection with any Loan Document or the
execution, legality, validity, enforceability, genuineness, sufficiency or value
of any Loan Document or any other instrument and document furnished pursuant
thereto and (b) the financial condition of the Borrower or the performance or
observance by the Borrower of any of its obligations under any Loan Document or
any other instrument or document furnished pursuant thereto.

     3. The Designee (a) confirms that it has received a copy of each Loan
Document, together with copies of the financial statements referred to in
Articles IV and V of the Credit Agreement and such other documents and
information as it has deemed appropriate to make its own credit analysis and
decision to enter into this Designation Agreement; (b) agrees that it will
independently and without reliance upon the Lead Agent, the Designor or any
other Bank and based on such documents and information as it shall deem
appropriate at the time, continue to make its own credit decisions in taking or
not taking action under any Loan Document; (c) confirms that it is a Designated
Lender; (d) appoints and authorizes the Lead Agent to take such action as agent
on its behalf and to exercise such powers and discretion under any Loan Document
as are delegated to the Lead Agent by the terms

                                      H-1
<PAGE>
 
thereof, together with such powers and discretion as are reasonably incidental
thereto; and (e) agrees to be bound by each and every provision of each Loan
Document and further agrees that it will perform in accordance with their terms
all of the obligations which by the terms of any Loan Document are required to
be performed by it as a Bank.

     4. The Designee hereby appoints Designor as Designee's agent and attorney
in fact, and grants to Designor an irrevocable power of attorney, to receive
payments made for the benefit of Designee under the Credit Agreement, to deliver
and receive all communications and notices under the Credit Agreement and other
Loan Documents and to exercise on Designee's behalf all rights to vote and to
grant and make approvals, waivers, consents of amendments to or under the Credit
Agreement or other Loan Documents. Any document executed by the Designor on the
Designee's behalf in connection with the Credit Agreement or other Loan
Documents shall be binding on the Designee. The Borrower, the Lead Agent and
each of the Banks may rely on and are beneficiaries of the preceding provisions.

     5.  Following the execution of this Designation Agreement by the Designor
and its Designee, it will be delivered to the Lead Agent for acceptance and
recording by the Lead Agent. The effective date for this Designation Agreement
(the "Effective Date") shall be the date of acceptance hereof by the Lead Agent,
unless otherwise specified on the signature page thereto.

     6.  The Lead Agent hereby agrees that it will not institute against any
Designated Lender or join any other Person in instituting against any Designated
Lender any bankruptcy, reorganization, arrangement, insolvency or liquidation
proceeding under any federal or state bankruptcy or similar law, until the later
to occur of (i) one year and one day after the payment in full of the latest
maturing commercial paper note issued by such Designated Lender and (ii) the
Maturity Date.

     7.  The Designor unconditionally agrees to pay or reimburse the Designee
and save the Designee harmless against all liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind or nature whatsoever which may be imposed or asserted by any of the
parties to the Loan Documents against the Designee, in its capacity as such, in
any way relating to or arising out of this Agreement or any other Loan Documents
or any action taken or omitted by the Designee hereunder or thereunder, provided
                                                                        --------
that the Designor shall not be liable for any portion of such liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs,
expenses or disbursements if the same results from the Designee's gross
negligence or willful misconduct.

     8.  Upon such acceptance and recording by the Lead Agent, as of the
Effective Date, the Designee shall be a party to the

                                      H-2
<PAGE>
 
Credit Agreement with a right (subject to the provisions of Section 2.3(b)) to
make Money Market Loans as a Bank pursuant to Section 2.3 of the Credit
Agreement and the rights and obligations of a Bank related thereto; provided,
                                                                    --------
however, that the Designee shall not be required to make payments with respect
- -------
to such obligations except to the extent of excess cash flow of such Designee
which is not otherwise required to repay obligations of such Designated Lender
which are then due and payable. Notwithstanding the foregoing, the Designor, as
administrative agent for the Designee, shall be and remain obligated to the
Borrower, the Co-Agents and the Banks for each and every of the obligations of
the Designee and its Designor with respect to the Credit Agreement, including,
without limitation, any indemnification obligations under Section 7.6 of the
Credit Agreement and any sums otherwise payable to the Borrower by the Designee.

     9.  This Designation Agreement shall be governed by, and construed in
accordance with, the laws of the State of New York.

     10. This Designation Agreement may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement. Delivery of an executed
counterpart of a signature page to this Designation Agreement by facsimile
transmission shall be effective as delivery of a manually executed counterpart
of this Designation Agreement.

                                      H-3
<PAGE>
 
     IN WITNESS WHEREOF, the Designor and the Designee, intending to be legally
bound, have caused this Designation Agreement to be executed by their officers
thereunto duly authorized as of the date first above written.

Effective Date:                                       ________________________, 
199__


                                 [NAME OF DESIGNOR], as 
                                 Designor

                                 By:
                                 Title:

                                 [NAME OF DESIGNEE] as 
                                 Designee

                                 By:
                                 Title:

                                 Applicable Lending Office 
                                 (and address for notices):

                                        [ADDRESS]

Accepted this _____ day
of ________, 19__

MORGAN GUARANTY TRUST COMPANY OF NEW YORK,
as Lead Agent
 
By:
Title:

                                      H-4
<PAGE>
 
                                 SCHEDULE 4.22
                                 -------------

                                 LABOR MATTERS

Agreement between Building Owners and Managers Association of Greater Los
Angeles, Inc., and International Union of Operating Engineers, Local No. 501,
AFL-CIO (November 1, 1996-October 31, 2001)

<PAGE>
 
                                                                    EXHIBIT 10.3

                   AMENDED AND RESTATED GUARANTY OF PAYMENT
                   ----------------------------------------


     AMENDED AND RESTATED GUARANTY OF PAYMENT (this "Guaranty"), made as of
                                                     --------              
October 9, 1998, between KILROY REALTY CORPORATION, a Maryland corporation,
having an address at 2250 East Imperial Highway, Suite 1200, El Segundo,
California 90245 ("Guarantor"), and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, a
                   ---------                                                    
New York banking corporation, having an office at 60 Wall Street, New York, New
York 10260, as lead agent (the "Lead Agent") for the banks (the "Banks") listed
                                ----------                       -----         
on the signature pages of the Amended and Restated Revolving Credit Agreement
(as the same may be amended, modified, supplemented or restated, the "Credit
                                                                      ------
Agreement"), dated as of the date hereof, among Kilroy Realty, L.P.
- ---------                                                          
("Borrower"), the Banks, the Lead Agent, and Bank of Montreal, Commerzbank
  --------                                                                
Aktiengesellschaft, Los Angeles Branch, Dresdner Bank AG, New York Branch and
Grand Cayman Branch, PNC Bank, National Association and Union Bank of
California, as Co-Agents.

                             W I T N E S S E T H:
                             - - - - - - - - - - 

     WHEREAS, the Borrower, the Lead Agent and the Banks entered into the
Revolving Credit Agreement, dated as of February 24, 1998 (the "Existing Credit
                                                                ---------------
Agreement"); and
- ---------       

     WHEREAS, the parties hereto have agreed to amend and restate the terms and
conditions contained in the Existing Credit Agreement in their entirety as
hereinafter set forth; and

     WHEREAS, as a condition to the execution and delivery of the Credit
Agreement, the Banks have required that Guarantor amend and restate the Guaranty
of Payment (the "Existing Guaranty"), dated as February 24, 1998, in its
                 -----------------                                      
entirety; and

     WHEREAS, capitalized terms used herein and not otherwise defined shall have
the meanings ascribed there-to in the Credit Agreement;

     NOW, THEREFORE, the parties hereto hereby agree as follows:
<PAGE>
 
     I.  The Existing Guaranty is hereby modified so that all of the terms and
conditions of the aforesaid Existing Guaranty shall be restated in their
entirety as set forth herein, and Guarantor agrees to comply with and be subject
to all of the terms, covenants and conditions of this Guaranty.

     II.  This Guaranty shall be binding upon and inure to the benefit of the
parties hereto, and their respective successors and assigns, and shall be deemed
to be effective as of the date hereof.

     III.  Any reference in the Notes, any other Loan Document or any other
document executed in connection with this Agreement to the Existing Guaranty
shall be deemed to refer to this Guaranty.

     1.   Guarantor, on behalf of itself and its successors and assigns, hereby
irrevocably, absolutely and unconditionally guarantees the full and punctual
payment when due, whether at stated maturity or otherwise, of all Obligations of
Borrower now or hereafter existing under the Notes and the Credit Agreement, for
principal and/or interest as well as any and all other amounts due thereunder,
including, without limitation, all indemnity obligations of Borrower thereunder,
and any and all reasonable costs and expenses (including, without limitation,
reasonable attorneys' fees and disbursements) incurred by the Lead Agent or the
Banks in enforcing its rights under this Guaranty (all of the foregoing
obligations being the "Guaranteed Obligations").
                       ----------------------   

     2.   It is agreed that the Guaranteed Obligations of Guarantor hereunder
are primary and this Guaranty shall be enforceable against Guarantor and its
successors and assigns without the necessity for any suit or proceeding of any
kind or nature whatsoever brought by the Lead Agent against Borrower or its
respective successors or assigns or any other party or against any security for
the payment and performance of the Guaranteed Obligations and without the
necessity of any notice of non-payment or non-observance or of any notice of
acceptance of this Guaranty or of any notice or demand to which Guarantor might
otherwise be entitled (including, without limitation, diligence, presentment,
notice of maturity, extension of time, change in nature or form of the
Guaranteed Obligations, acceptance of further securi-

                                       2
<PAGE>
 
ty, release of further security, imposition or agreement arrived at as to the
amount of or the terms of the Guaranteed Obligations, notice of adverse change
in Borrower's financial condition and any other fact which might materially
increase the risk to Guarantor), all of which Guarantor hereby expressly waives;
and Guarantor hereby expressly agrees that the validity of this Guaranty and the
obligations of Guarantor hereunder shall in no way be terminated, affected,
diminished, modified or impaired by reason of the assertion of or the failure to
assert by the Lead Agent against Borrower or its respective successors or
assigns, any of the rights or remedies reserved to the Lead Agent pursuant to
the provisions of the Loan Documents. Guarantor agrees that any notice or
directive given at any time to the Lead Agent which is inconsistent with the
waiver in the immediately preceding sentence shall be void and may be ignored by
the Lead Agent, and, in addition, may not be pleaded or introduced as evidence
in any litigation relating to this Guaranty for the reason that such pleading or
introduction would be at variance with the written terms of this Guaranty,
unless the Lead Agent has specifically agreed otherwise in a writing, signed by
a duly authorized officer of the Lead Agent. Guarantor specifically acknowledges
and agrees that the foregoing waivers are of the essence of this transaction and
that, but for this Guaranty and such waivers, the Lead Agent would decline to
execute the Loan Documents.

     3.   Guarantor waives, and covenants and agrees that it will not at any
time insist upon, plead or in any manner whatsoever claim or take the benefit or
advantage of, any and all appraisal, valuation, stay, extension, marshalling-of-
assets or redemption laws, or right of homestead or exemption, whether now or at
any time hereafter in force, which may delay, prevent or otherwise affect the
performance by Guarantor of its obligations under, or the enforcement by the
Lead Agent of, this Guaranty. Guarantor further covenants and agrees not to set
up or claim any defense, counterclaim, offset, set-off or other objection of any
kind to any action, suit or proceeding in law, equity or otherwise, or to any
demand or claim that may be instituted or made by the Lead Agent other than the
defense of the actual timely payment and performance by Borrower of the
Guaranteed Obligations hereunder; provided, however, that the foregoing shall
not be deemed a waiver of Guarantor's right to assert any

                                       3
<PAGE>
 
compulsory counterclaim, if such counterclaim is compelled under local law or
rule of procedure, nor shall the foregoing be deemed a waiver of Guarantor's
right to assert any claim which would constitute a defense, setoff, counterclaim
or crossclaim of any nature whatsoever against Lead Agent or any Bank in any
separate action or proceeding. Guarantor represents, warrants and agrees that,
as of the date hereof, its obligations under this Guaranty are not subject to
any counterclaims, offsets or defenses against the Lead Agent or any of the
Banks of any kind.

     4.   The provisions of this Guaranty are for the benefit of the Lead Agent
and the Banks and their successors and permitted assigns, and nothing herein
contained shall impair as between Borrower and the Lead Agent and the Banks the
obligations of Borrower under the Loan Documents.

     5.   This Guaranty shall be a continuing, unconditional and absolute
guaranty and the liability of Guarantor hereunder shall in no way be terminated,
affected, modified, impaired or diminished by reason of the happening, from time
to time, of any of the following, although without notice or the further consent
of Guarantor:

     (a)  any assignment, amendment, modification or waiver of or change in any
  of the terms, covenants, conditions or provisions of any of the Guaranteed
  Obligations or the Loan Documents or the invalidity or unenforceability of any
  of the foregoing; or

     (b)  any extension of time that may be granted by the Lead Agent and/or any
  Bank to Borrower, any guarantor, or their respective successors or assigns,
  heirs, executors, administrators or personal representatives; or

     (c)  any action which the Lead Agent may take or fail to take under or in
  respect of any of the Loan Documents or by reason of any waiver or, or failure
  to enforce any of the rights, remedies, powers or privileges available to the
  Lead Agent under this Guaranty or available to the Lead Agent at law, equity
  or otherwise, or any action on the

                                       4
<PAGE>
 
  part of the Lead Agent granting indulgence or extension in any form
  whatsoever; or

     (d)  any sale, exchange, release, or other disposition of any property
  pledged, mortgaged or conveyed, or any property in which the Lead Agent and/or
  the Banks have been granted a lien or security interest to secure any
  indebtedness of Borrower to the Lead Agent and/or the Banks; or

     (e)  any release of any person or entity who may be liable in any manner
  for the payment and collection of any amounts owed by Borrower to the Lead
  Agent and/or the Banks; or

     (f)  the application of any sums by whomsoever paid or however realized to
  any amounts owing by Borrower to the Lead Agent and/or the Banks under the
  Loan Documents in such manner as the Lead Agent shall determine in its sole
  discretion; or

     (g)  Borrower's or any guarantor's voluntary or involuntary liquidation,
  dissolution, sale of all or substantially all of their respective assets and
  liabilities, appointment of a trustee, receiver, liquidator, sequestrator or
  conservator for all or any part of Borrower's or Guarantor's assets,
  insolvency, bankruptcy, assignment for the benefit of creditors,
  reorganization, arrangement, composition or readjustment, or the commencement
  of other similar proceedings affecting Borrower or any guarantor or any of the
  assets of any of them, including, without limitation, (i) the release or
  discharge of Borrower or any guarantor from the payment and performance of
  their respective obligations under any of the Loan Documents by operation of
  law, or (ii) the impairment, limitation or modification of the liability of
  Borrower or any guarantor in bankruptcy, or of any remedy for the enforcement
  of the Guaranteed Obligations under any of the Loan Documents, or Guarantor's
  liability under this Guaranty, resulting from the operation of any present or
  future provisions of the Bankruptcy Code or other present or future federal,
  state or applicable statute or law or from the decision in any court; or

                                       5
<PAGE>
 
     (h)  any improper disposition by Borrower of the proceeds of the Loans, it
  being acknowledged by Guarantor that the Lead Agent or any Bank shall be
  entitled to honor any request made by Borrower for a disbursement of such
  proceeds and that neither the Lead Agent nor any Bank shall have any
  obligation to see the proper disposition by Borrower of such proceeds.

     6.   Guarantor agrees that if at any time all or any part of any payment at
any time received by the Lead Agent and/or any Bank from Borrower or Guarantor
under or with respect to this Guaranty is or must be rescinded or returned by
the Lead Agent or any Bank for any reason whatsoever (including, without
limitation, the insolvency, bankruptcy or reorganization of Borrower or
Guarantor), then Guarantor's obligations hereunder shall, to the extent of the
payment rescinded or returned, be deemed to have continued in existence
notwithstanding such previous receipt by such party, and Guarantor's obligations
hereunder shall continue to be effective or reinstated, as the case may be, as
to such payment, as though such previous payment had never been made.

     7.   Until this Guaranty is terminated pursuant to the terms hereof,
Guarantor (i) shall have no right of subrogation against Borrower or any entity
comprising same by reason of any payments or acts of performance by Guarantor in
compliance with the obligations of Guarantor hereunder; (ii) waives any right to
enforce any remedy which Guarantor now or hereafter shall have against Borrower
or any entity comprising same by reason of any one or more payment or acts of
performance in compliance with the obligations of Guarantor hereunder and (iii)
from and after an Event of Default (as defined in the Credit Agreement),
subordinates any liability or indebtedness of Borrower or any entity comprising
same now or hereafter held by Guarantor or any affiliate of Guarantor to the
obligations of Borrower under the Loan Documents. The foregoing, however, shall
not be deemed in any way to limit any rights that Guarantor may have pursuant to
the Agreement of Limited Partnership of Borrower or which it may have at law or
in equity with respect to any other partners of Borrower.

     8.   Guarantor represents and warrants to the Lead Agent and the Banks
(with the knowledge that the

                                       6
<PAGE>
 
Lead Agent and the Banks are relying upon the same) as of the date hereof, as
follows:

     (a)  as of the date hereof, Guarantor is the sole general partner of
  Borrower;

     (b)  based upon such relationship, Guarantor has determined that it is in
  its best interests to enter into this Guaranty;

     (c)  in the good faith judgement of Guarantor, the benefits to be derived
  by Guarantor from Borrower's access to funds made possible by the Loan
  Documents are at least equal to the obligations undertaken pursuant to this
  Guaranty;

     (d)  Guarantor is solvent and has corporate power and authority to enter
  into this Guaranty and to perform its obligations under the term hereof and
  (i) Guarantor is organized and validly existing under the laws of the State of
  Maryland, (ii) Guarantor has complied with all provisions of applicable law in
  connection with all aspects of this Guaranty, and (iii) the person executing
  this Guaranty has all the requisite power and authority to execute and deliver
  this Guaranty;

     (e)  to the best of Guarantor's knowledge, there is no action, suit,
  proceeding, or investigation pending or threatened against or affecting
  Guarantor at law, in equity, in admiralty or before any arbitrator or any
  governmental department, commission, board, bureau, agency or instrumentality
  (domestic or foreign) which is reasonably likely to materially and adversely
  impair the ability of Guarantor to perform its obligations under this
  Guaranty;

     (f)  the execution and delivery of and the performance by Guarantor of its
  obligations under this Guaranty have been duly authorized by all necessary
  action on the part of Guarantor and do not (i) violate any provision of any
  law, rule, regulation (including, without limitation, Regulation U or X of the
  Board of Governors of the Federal Reserve System of the United States), order,
  writ, judgment, decree, determination or award presently in effect

                                       7
<PAGE>
 
  having applicability to Guarantor or the organizational documents of Guarantor
  the consequences of which violation is likely to materially and adversely
  impair the ability of Guarantor to perform its obligations under this Guaranty
  or (ii) violate or conflict with, result in a breach of or constitute a
  default under any material indenture, agreement or other instrument to which
  Guarantor is a party, or by which Guarantor or any of its property is bound
  the consequences of which violation, conflict, breach or default is reasonably
  likely to materially and adversely impair the ability of Guarantor to perform
  its obligations under this Guaranty;

     (g)  this Guaranty has been duly executed by Guarantor and constitutes the
  legal, valid and binding obligation of Guarantor, enforceable against it in
  accordance with its terms except as enforceability may be limited by
  applicable insolvency, bankruptcy or other laws affecting creditors' rights
  generally or general principles of equity, whether such enforceability is
  considered in a proceeding in equity or at law;

     (h)  no authorization, consent, approval, license or formal exemption from,
  nor any filing, declaration or registration with, any Federal, state, local or
  foreign court, governmental agency or regulatory authority is required in
  connection with the execution, delivery and performance by Guarantor of this
  Guaranty, except those which have already been obtained; and

     (i)  Guarantor is not an "investment company" as that term is defined in,
  nor is it otherwise subject to regulation under, the Investment Company Act of
  1940, as amended.

     9.   Guarantor and the Lead Agent each acknowledge and agree that this
Guaranty is a guarantee of payment and performance and not of collection and
enforcement in respect of any obligations which may accrue to the Lead Agent
and/or the Banks from Borrower under the provisions of any Loan Document.

     10.  Subject to the terms and conditions of the Credit Agreement, and in
conjunction therewith, the Lead

                                       8
<PAGE>
 
Agent or any Bank may assign any or all of its rights under this Guaranty. In
the event of any such assignment, the Lead Agent shall give Guarantor prompt
written notice of same. If the Lead Agent and/or any Bank elects to sell all the
Loans or participations in the Loans and the Loan Documents, including this
Guaranty, the Lead Agent or any Bank may forward to each purchaser and
prospective purchaser all documents and information relating to this Guaranty or
to Guarantor, whether furnished by Borrower or Guarantor or otherwise, subject
to the terms and conditions of the Credit Agreement.

     11.  Guarantor agrees, upon the written request of the Lead Agent, to
execute and deliver to the Lead Agent, from time to time, any modification or
amendment hereto or any additional instruments or documents reasonably
considered necessary by the Lead Agent or its counsel to cause this Guaranty to
be, become or remain valid and effective in accordance with its terms, provided,
that, any such modification, amendment, additional instrument or document shall
not increase Guarantor's obligation's or diminish its rights hereunder and shall
be reasonably satisfactory as to form to Guarantor and to Guarantor's counsel.

     12.  The representations and warranties of Guarantor set forth in this
Guaranty shall survive until this Guaranty shall terminate in accordance with
the terms hereof.

     13.  This Guaranty contains the entire agreement among the parties with
respect to the subject matter hereof and supersedes all prior agreements
relating to such subject matter and may not be modified, amended, supplemented
or discharged except by a written agreement signed by Guarantor and the Lead
Agent.

     14.  If all or any portion of any provision contained in this Guaranty
shall be determined to be invalid, illegal or unenforceable in any respect for
any reason, such provision or portion thereof shall be deemed stricken and
severed from this Guaranty and the remaining provisions and portions thereof
shall continue in full force and effect.

                                       9
<PAGE>
 
     15.  This Guaranty may be executed in counterparts which together shall
constitute the same instrument.

     16.  All notices, requests and other communications to any party hereunder
shall be in writing (including bank wire, telex, facsimile transmission followed
by telephonic confirmation or similar writing) and shall be, addressed to such
party at the address set forth below or to such other address as may be
identified by any party in a written notice to the others :

If to Guarantor:    Kilroy Realty Corporation
                    2250 East Imperial Highway
                    Suite 1200
                    El Segundo, California 90245
                    Attn: Chief Financial Officer
                    Telecopy: (310) 322-5981

With Copies of
Notices to
Guarantor to:       Latham & Watkins
                    633 West Fifth Street
                    Suite 4000
                    Los Angeles, California 90071
                    Attn: Glen B. Collyer, Esq.
                    Telecopy: (213) 891-8763


If to the Lead
Agent:              Morgan Guaranty
                         Trust Company of New York
                    60 Wall Street
                    New York, New York 10260
                    Attn:  Mr. Tim O'Donovan
                    Telecopy: (212) 648-5249

With Copies of
Notices to the
Lead Agent to:      Skadden, Arps, Slate,
                        Meagher & Flom LLP
                    919 Third Avenue
                    New York, New York 10022
                    Attn:  Martha Feltenstein, Esq.
                    Telecopy: (212) 735-2000

          Each such notice, request or other communication shall be effective
(i) if given by telex or facsimi-

                                       10
<PAGE>
 
le transmission, when such telex or facsimile is transmitted to the telex number
or facsimile number specified in this Section and the appropriate answerback or
facsimile confirmation is received, (ii) if given by certified registered mail,
return receipt requested, with first class postage prepaid, addressed as
aforesaid, upon receipt or refusal to accept delivery, (iii) if given by a
nationally recognized overnight carrier, 24 hours after such communication is
deposited with such carrier with postage prepaid for next day delivery, or (iv)
if given by any other means, when delivered at the address specified in this
Section.

     17.  Any acknowledgment or new promise, whether by payment of principal or
interest or otherwise by Borrower or Guarantor, with respect to the Guaranteed
Obligations shall, if the statute of limitations in favor of Guarantor against
the Lead Agent shall have commenced to run, toll the running of such statute of
limitations, and if the period of such statute of limitations shall have
expired, prevent the operation of such statute of limitations.

     18.  This Guaranty shall be binding upon Guarantor and its successors and
assigns and shall inure to the benefit of the Lead Agent and the Banks and their
successors and permitted assigns.

     19.  The failure of the Lead Agent to enforce any right or remedy
hereunder, or promptly to enforce any such right or remedy, shall not constitute
a waiver thereof, nor give rise to any estoppel against the Lead Agent, nor
excuse Guarantor from its obligations hereunder. Any waiver of any such right or
remedy to be enforceable against the Lead Agent must be expressly set forth in a
writing signed by the Lead Agent.

     20.  (a)  THIS GUARANTY AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES
HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED BY THE LAWS OF
THE STATE OF NEW YORK.

          (b)  Any legal action or proceeding with respect to this Guaranty and
any action for enforcement of any judgment in respect thereof may be brought in
the courts of the State of New York or of the United States of America for the
Southern District of New York, and, by

                                       11
<PAGE>
 
execution and delivery of this Guaranty, the Guarantor hereby accepts for itself
and in respect of its property, generally and unconditionally, the non-exclusive
jurisdiction of the aforesaid courts and appellate courts from any thereof. The
Guarantor irrevocably consents to the service of process out of any of the
aforementioned courts in any such action or proceeding by the mailing of copies
thereof by registered or certified mail, postage prepaid, to the Guarantor at
its address for notices set forth herein. The Guarantor hereby irrevocably
waives, to the fullest extent permitted by law, any objection which it may now
or hereafter have to the laying of venue of any of the aforesaid actions or
proceedings arising out of or in connection with this Guaranty brought in the
courts referred to above and hereby further irrevocably waives, to the fullest
extent permitted by law, and agrees not to plead or claim in any such court that
any such action or proceeding brought in any such court has been brought in an
inconvenient forum. Nothing herein shall affect the right of the Lead Agent to
serve process in any other manner permitted by law or to commence legal
proceedings or otherwise proceed against the Guarantor in any other
jurisdiction.

          (c)  GUARANTOR HEREBY WAIVES ITS RIGHTS TO A JURY TRIAL OF ANY AND ALL
CLAIMS OR CAUSES OF ACTION BASED UPON OR ARISING OUT OF THIS GUARANTY. IT IS
HEREBY ACKNOWLEDGED BY GUARANTOR THAT THE WAIVER OF A JURY TRIAL IS A MATERIAL
INDUCEMENT FOR THE Lead Agent TO ACCEPT THIS GUARANTY AND THAT THE LOANS MADE BY
THE BANKS ARE MADE IN RELIANCE UPON SUCH WAIVER. GUARANTOR FURTHER WARRANTS AND
REPRESENTS THAT SUCH WAIVER HAS BEEN KNOWINGLY AND VOLUNTARILY MADE, FOLLOWING
CONSULTATION WITH LEGAL COUNSEL. IN THE EVENT OF LITIGATION, THIS GUARANTY MAY
BE FILED BY THE LEAD AGENT IN COURT AS A WRITTEN CONSENT TO A NON-JURY TRIAL.

          (d)  Guarantor does hereby further covenant and agree to and with the
Lead Agent that Guarantor may be joined in any action against Borrower in
connection with the Loan Documents and that recovery may be had against
Guarantor in such action or in any independent action against Guarantor (with
respect to the Guaranteed Obligations), without the Lead Agent first pursuing or
exhausting any remedy or claim against Borrower or its successors or assigns.
Guarantor also agrees that, in an action brought with respect to the Guaranteed
Obligations

                                       12
<PAGE>
 
in any jurisdiction, it shall be conclusively bound by the judgment in any such
action by the Lead Agent (wherever brought) against Borrower or its successors
or assigns, as if Guarantor were a party to such action, even though Guarantor
was not joined as parties in such action.

          (e)  Guarantor agrees to pay all reasonable expenses (including,
without limitation, attorneys' fees and disbursements) which may be incurred by
the Lead Agent or the Banks in connection with the enforcement of their rights
under this Guaranty, whether or not suit is initiated.

     21.  Notwithstanding anything to the contrary contained herein, this
Guaranty shall terminate and be of no further force or effect upon the full
performance and payment of the Guaranteed Obligations hereunder. Upon
termination of this Guaranty in accordance with the terms of this Guaranty, the
Lead Agent promptly shall deliver to Guarantor such documents as Guarantor or
Guarantor's counsel reasonably may request in order to evidence such
termination.

     22.  All of the Lead Agent's rights and remedies under each of the Loan
Documents or under this Guaranty are intended to be distinct, separate and
cumulative and no such right or remedy therein or herein mentioned is intended
to be in exclusion of or a waiver of any other right or remedy available to the
Lead Agent.

                                       13
<PAGE>
 
          IN WITNESS WHEREOF, the parties hereto have executed and delivered
this Guaranty of Payment as of the date and year first above written.


                            GUARANTOR:

                            KILROY REALTY CORPORATION


                            By:  /s/ Tyler H. Rose
                                 --------------------------------
                                 Name:  Tyler H. Rose
                                 Title: Senior Vice President and Trea-
                                 surer



 
ACCEPTED:

MORGAN GUARANTY TRUST COMPANY
OF NEW YORK, AS Lead Agent


By: /s/ Tim O'Donovan
    -------------------------
    Name:  Tim O'Donovan
    Title: Vice President

<PAGE>
 
                                ACKNOWLEDGMENT 
                                --------------



STATE OF CALIFORNIA   )
                      ) SS.
COUNTY OF LOS ANGELES )


          On September 25, 1998, before me, Judy LaCoss, a Notary Public,
personally appeared Tyler H. Rose, personally known to me to be the person whose
name is subscribed to the within instrument and acknowledged to me that he
executed the same in his authorized capacity, and that by his signature on the
instrument, or the entity upon behalf of which the person acted, executed the
instrument.


          WITNESS my hand and official seal.

                         [Seal]
                                                        /s/ Judy LaCoss
                                                        Notary Public
                   
                    


<PAGE>

                                                                    EXHIBIT 10.5
 
                                  K I L R O Y
                                  R E A L T Y
                             ---------------------
                             C O R P O R A T I O N



                               October 13, 1998



Allen Development, Inc.
111 South Johnson
Visalia, California  93291

          Re:  Carmel Valley Corporate Center Closing
               --------------------------------------

Gentlemen:

          This letter is addressed to Allen Development, Inc. in its capacity as
the general partner and managing member of the various entities which are
parties to the Contribution Agreement, dated as of October 21, 1997 (the
"Contribution Agreement"), by and among Kilroy Realty, L.P., Kilroy Realty
Corporation (together with Kilroy Realty, L.P., "Kilroy") and the entities
collectively referred to therein as "TAG".  David Dick raised a number of issues
in his letter of September 2, 1998, and additional issues have been raised in
various discussions and correspondence since that date.  This letter agreement
is intended to provide a global resolution of certain of the remaining open
issues.  The following paragraphs correspond to the numbered paragraphs in David
Dick's September 2, 1998 letter.  Unless otherwise indicated, defined terms
shall have the meanings set forth in the Contribution Agreement.

          1.  The Contribution Value for Carmel Valley Corporate Center (the
"Carmel Property") shall be $21,686,605.  The closing for this Property (the
"Closing") shall occur as soon as reasonably possible, but in any event prior to
October 19, 1998. All prorations shall be made as of October 1, 1998.  The $24
minimum Average Closing Price which is in effect prior to November 1, 1998
pursuant to Section 3.2(d) of the Contribution Agreement will apply to Units
issued at the closing.

          2.  At the Closing for the Carmel Property, TAG may elect to take up
to $4,440,258 of the Contribution Value in cash.  There has been disagreement
between Kilroy and TAG concerning the standards for determining the amount of
cash that can be elected at this Closing.  The foregoing cash election is agreed
to by Kilroy for purposes of this Closing only and shall not be deemed to be a
precedent for any subsequent closings pursuant to the 
<PAGE>
 
Allen Development, Inc.
October 13, 1998
Page 2


Contribution Agreement. The total amount of cash which may be elected pursuant
to Section 3.2(c)(i) of the Contribution Agreement for all closings pursuant to
the Contribution Agreement will remain at $20,000,000. Upon the Closing for the
Carmel Property and the payment of the cash election, TAG will have received a
total of $17,288,523 of such $20,000,000

          3.  Kilroy and TAG agree to the early contribution of the LPL Property
on the condition that all free rent on this Property is eliminated by TAG prior
to such Contribution.  TAG shall use reasonable efforts to promptly modify the
LPL lease to eliminate free rent in order to permit the early contribution.

          4.  Richard Allen's correspondence on the subject of Lot 1 of the
Corporate Research Park Property has indicated that he believes that Lot 1
should be acquired by KR-Gateway Partners, LLC, the joint venture of KR and TAG.
Kilroy management will meet with Richard Allen to hear his position.  Richard
Allen may also take this issue up directly with the Board of Directors of Kilroy
Realty Corporation.

          5.  Kilroy will waive and will not exercise both its option to
purchase and its right of first refusal on the Doubletree Restaurant Parcel on
the conditions that (a) the La Jolla Playhouse purchases or leases the
Doubletree Restaurant Parcel for purposes of a theater-related facility, (b)
Kilroy has the right to reasonably approve the design plans, landscaping plans
and other exterior elements of such facility, and (c) Kilroy and TAG first
record a mutually acceptable reciprocal easement agreement relating to the
Doubletree Restaurant Parcel and providing for ingress, egress and parking as to
each parcel.

          6.  Kilroy is willing to consider the early contribution of the
Dataworks facility to Kilroy Realty, L.P. and awaits your proposal with respect
to this issue.

          7.  Upon execution and delivery of this letter by Kilroy and TAG,
Kilroy shall have no further obligation to acquire Pilot Commerce Center,
Redwood Shores or the San Rafael Fed Ex properties.  The Contribution Agreement
is hereby amended to relieve TAG of its obligation to offer, and Kilroy of its
obligations to accept, contribution of such properties.  The parties shall enter
into such further amendments of the Contribution Agreement as may be necessary
to implement the foregoing.

          8.  The Management Agreements for the Kelly Ranch and Wateridge
Properties shall be modified as of November 1 as follows: (a) the Management Fee
payable to Kilroy Services, Inc. ("KSI") related to the Kelly Ranch Property
shall be reduced to $5,000 per month until commencement of infrastructure
construction and then increased to $7,500 per month until 30 days after the
completion of the infrastructure (with no changes to the Development Fee of $3
per gross square foot of Buildings constructed), and (b) the Management Fee
payable to KSI related to the Wateridge Property shall be reduced to $5,000 per
month 30 days after the completion of shell construction, and KSI shall receive
a tenant improvements administrative fee of 5% of the cost of the tenant
improvements on the Wateridge Property if KSI 
<PAGE>
 
Allen Development, Inc.
October 13, 1998
Page 3


administers and manages such tenant improvement work; provided, however, that
the sum of the $5,000 Management Fee and the tenant improvements management fee
shall not exceed $10,000 per month.

          9.   No action required.

          10.  The parties agree to commence discussions regarding the land
valuation of the Corporate Research Land consistent with and in the manner set
forth in the Contribution Agreement and the exhibits thereto.  The agreement of
the parties to commence negotiations at this time is not an amendment to the
Contribution Agreement and shall not be construed to impose any obligations
greater than or inconsistent with the provisions of the Contribution Agreement.

          11.  The parties agree to commence discussions regarding the land
valuation of the Doubletree Land consistent with and in the manner set forth in
the Contribution Agreement and the exhibits thereto.  The agreement of the
parties to commence negotiations at this time is not an amendment to the
Contribution Agreement and shall not be construed to impose any obligations
greater than or inconsistent with the provisions of the Contribution Agreement.

          12.  The parties agree to discuss the early contribution of Parcel 2
of the Doubletree Property to Kilroy Realty, L.P. and TAG awaits Kilroy's
proposal with respect to this issue.

          TAG represents to Kilroy that no consents are required from any party
to the Contribution Agreement which has not been obtained in order for TAG to
fulfill its obligations set forth in this letter.  TAG hereby agrees to
indemnify, defend and hold harmless Kilroy from and against any claims by such
persons and entities related to or based upon the assertion that TAG did not
have the power to enter into this letter agreement or to fulfill its obligations
hereunder.

          KSI is executing this letter solely for the purpose of agreeing to the
provisions of paragraph 8.

          In order to expedite the transactions contemplated herein, telecopied
signatures may be used in place of original signatures on this letter or any
document delivered pursuant hereto.  The parties intend to be bound by the
signatures on the telecopied document, are aware that the other party will rely
on the telecopied signatures, and hereby waive any defenses to the enforcement
of the terms of this letter based on the form of signature.  This letter may be
executed in counterparts, all such executed counterparts shall constitute the
same agreement, and the signature of any party to any counterpart shall be
deemed a signature to, and may be appended to, any other counterpart.
<PAGE>
 
Allen Development, Inc.
October 13, 1998
Page 4


          If the foregoing is acceptable to you, please execute one copy of this
letter and return it to the undersigned.

                              "KILROY"

                              KILROY REALTY, L.P., a Delaware limited
                              partnership

                              By:  Kilroy Realty Corporation, a Maryland
                                   corporation, its General Partner


                                   By:    /s/ Jeffrey C. Hawken
                                          --------------------------------
                                   Name:  Jeffrey C. Hawken
                                   Title: Executive Vice President, Chief
                                          Operating Officer

                              KILROY REALTY CORPORATION, a Maryland corporation


                              By:    /s/ Jeffrey C. Hawken
                                     -------------------------------------
                              Name:  Jeffrey C. Hawken
                              Title: Executive Vice President, Chief
                                     Operating Officer

                              KILROY SERVICES, INC., a Maryland corporation


                              By:    /s/ Jeffrey C. Hawken
                                     -------------------------------------
                              Name:  Jeffrey C. Hawken
                              Title: Vice President and Assistant Secretary
<PAGE>
 
Allen Development, Inc.
October 13, 1998
Page 5


                              "TAG"

                              ALLEN DEVELOPMENT, INC., A California 
                              corporation


                              By:   /s/ Kevin A. Noell
                                    -------------------------------------
                                    Kevin A. Noell,
                                    President and Chief Operating Officer

                              On behalf of the following entities:

                              ADI EASTGATE PARTNERS, L.P.,
                              a California limited partnership


                              ALLEN EXPRESS PETALUMA, L.P.,
                              a California limited partnership


                              ADI CARMEL VALLEY PARTNERS, L.P.,
                              a California limited partnership


                              MCCARRAN COMMERCE CENTER, LLC,
                              a Nevada limited liability company


                              SORRENTO WATERIDGE PARTNERS, L.P.,
                              a California limited partnership


                              ALLEN SHORE PARTNERS, L.P.,
                              a California limited partnership


                              PIAZZA PARTNERS, L.P.,
                              a California limited partnership


                              ADI RESEARCH PARTNERS, L.P.,
                              a California limited partnership


                              ADI MESA PARTNERS, L.P.,
                              a California limited partnership
<PAGE>
 
Allen Development, Inc.
October 13, 1998
Page 6
                              TAG HOLDINGS, LLC, a California limited 
                              liability company

                              By:   Allen Development, Inc., a California
                                    corporation


                                    By:  /s/ Kevin A. Noell
                                         -------------------------------------
                                         Kevin A. Noell,
                                         President and Chief Operating Officer

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               SEP-30-1998             SEP-30-1997
<CASH>                                          27,311                   8,929
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   19,951                   7,875
<ALLOWANCES>                                     (494)                   (508)
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                     0                       0
<PP&E>                                       1,132,158                 834,690
<DEPRECIATION>                               (139,170)               (121,780)
<TOTAL-ASSETS>                               1,063,670                 757,654
<CURRENT-LIABILITIES>                                0                       0
<BONDS>                                              0                       0
                                0                       0
                                          0                       0
<COMMON>                                           276                     245
<OTHER-SE>                                     476,122                 396,905
<TOTAL-LIABILITY-AND-EQUITY>                 1,063,670                 757,654
<SALES>                                              0                       0
<TOTAL-REVENUES>                                96,990                  45,701
<CGS>                                                0                       0
<TOTAL-COSTS>                                   45,878                  22,310
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                              14,642                   8,609
<INCOME-PRETAX>                                 36,470                  14,782
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                             36,470                  14,782
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                   3,204
<CHANGES>                                            0                       0
<NET-INCOME>                                    28,649<F1>              15,942
<EPS-PRIMARY>                                     1.07                    0.82
<EPS-DILUTED>                                     1.07                    0.81
        
<FN>
<F1>NET INCOME IS AFTER EQUITY IN LOSS OF UNCONSOLIDATED SUBSIDIARY OF ($24) AND
MINORITY INTERESTS OF ($7,797)
</FN>

</TABLE>


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