BRANDYWINE OPERATING PARTNERSHIP LP /PA
10-12G, 1998-06-05
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<PAGE>



      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 5, 1998



================================================================================



                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


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



                                     FORM 10

                   GENERAL FORM FOR REGISTRATION OF SECURITIES
                       PURSUANT TO SECTION 12(b) OR (g) OF
                           THE SECURITIES ACT OF 1934


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




                     BRANDYWINE OPERATING PARTNERSHIP, L.P.
             (Exact Name of Registrant as Specified in Its Charter)



                     Delaware                               23-2862640
         (State or other jurisdiction of                 (I.R.S. Employer
          incorporation or organization)                Identification No.)

               16 Campus Boulevard                             
                Newtown Square, PA                             19073
     (Address of Principal Executive Offices)                (Zip Code)



       Registrant's telephone number, including area code: (610) 325-5600


        Securities to be registered pursuant to Section 12(b) of the Act:


      Title of Each Class               Name of Each Exchange on Which
      to be so Registered               Each Class is to be Registered
     ---------------------             ---------------------------------
         Not Applicable                         Not Applicable


        Securities to be registered pursuant to Section 12(g) of the Act:

                      Units of General Partnership Interest
                                (Title of Class)

================================================================================

<PAGE>
                                TABLE OF CONTENTS
<TABLE>
<CAPTION>


                                                                                                               Page
                                                                                                               -----
<S>      <C>                                                                                                   <C>
Item 1.  Business.................................................................................................1

Item 2.  Financial Information....................................................................................7

Item 3.  Properties..............................................................................................11

Item 4.  Security Ownership of Certain Beneficial Owners and Management..........................................13

Item 5.  Directors and Executive Officers........................................................................14

Item 6.  Executive Compensation..................................................................................14

Item 7.  Certain Relationships and Related Transactions..........................................................14

Item 8.  Legal Proceedings.......................................................................................14

Item 9.  Market Price of and Dividends on the Registrant's Common Equity and Related Stockholder Matters.........14

Item 10.  Recent Sales of Unregistered Securities................................................................15

Item 11.  Description of Registrant's Securities to be Registered................................................17

Item 12.  Indemnification of Directors and Officers..............................................................18

Item 13.  Financial Statements and Supplementary Data............................................................19

Item 14.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure...................19

Item 15.  Financial Statements and Exhibits......................................................................19
</TABLE>

                                       -i-
<PAGE>

Item 1.  Business

General

         Brandywine Operating Partnership, L.P. (the "Operating Partnership") is
a Delaware limited partnership active in acquiring, developing, redeveloping,
leasing and managing office and industrial properties. Brandywine Realty Trust
("Brandywine" and, collectively with its subsidiaries, the "Company") is the
sole general partner of the Operating Partnership and is a self-administered,
self-managed and fully integrated real estate investment trust (a "REIT").
Brandywine commenced its operations in 1986 and since August 22, 1996 has owned
its assets and conducted its operations through the Operating Partnership. As of
March 31, 1998 and June 1, 1998, Brandywine's ownership interest in the
Operating Partnership was approximately 98.4% and 97.4%, respectively.

         As of June 1, 1998, the Operating Partnership's portfolio included 151
office properties and 28 industrial facilities (the "Properties") that contained
an aggregate of approximately 12.2 million net rentable square feet. As of June
1, 1998, the Properties (excluding three Properties under development or
redevelopment) were approximately 94.4% leased to 1,014 tenants and had an
average age of approximately 15 years. One hundred forty-four of the 179
Properties (approximately 71.3% of the Company's portfolio based on net rentable
square feet) were located in the Suburban Philadelphia Office and Industrial
Market. "Suburban Philadelphia Office and Industrial Market" or "Market" means
the areas comprised of the following counties: Berks, Bucks, Chester, Delaware,
Lehigh, Montgomery and Northampton in Pennsylvania and Burlington and Camden in
New Jersey.

         The Properties consist primarily of Class A suburban office and
industrial properties. The Operating Partnership considers Class A suburban
office and industrial properties to be those that have desirable locations, are
well-maintained and professionally managed and have the potential of achieving
rental and occupancy rates that are typically at or above those prevailing in
their respective markets. Certain of the Properties serve as flex facilities,
accommodating office use, warehouse space and research and development
activities.

         As of June 1, 1998, the Operating Partnership was in the process of
developing two suburban office buildings that are expected to contain an
aggregate of approximately 69,000 and 38,000 net rentable square feet,
respectively, upon completion. The Operating Partnership expects completion to
occur during the fourth quarter of 1998. As of June 1, 1998, the Operating
Partnership also owned or held options to purchase approximately 302.5 acres of
land for future development.

         In addition, as of June 1, 1998, the Operating Partnership owned
economic interests, ranging from 35% to 65%, in eight office development joint
ventures (the "Development Entities"). Two of the Development Entities own two
suburban office buildings that contain an aggregate of approximately 233,000 net
rentable square feet. A third Development Entity is in the process of
constructing a suburban office building that is expected to contain
approximately 85,000 net rentable square feet upon completion. The Operating
Partnership expects this building to be completed during 1998. As of June 1,
1998, the Development Entities also owned or held options to purchase
approximately 46.8 acres of land for future development. The Operating
Partnership has invested or committed to invest a total of approximately $27.4
million in the Development Entities.

         References in this Form 10 to the number of Properties owned by the
Operating Partnership and the square footage in the Operating Partnership's
portfolio assume consummation of the Operating Partnership's acquisition of an
approximately 209,000 net rentable square foot office property in Frederick,
Maryland that is currently under construction. The Operating Partnership agreed
to acquire this Property upon completion of its construction. The Operating
Partnership expects construction to be completed during the second quarter of
1998.

         The Operating Partnership's business objective is to:

         o maximize cash flow through leasing strategies designed to capture
           potential rental growth as rental rates increase and as below-market
           leases are renewed;

                                       -1-
<PAGE>

         o ensure a high tenant retention rate through an aggressive tenant
           services program responsive to the varying needs of the Operating
           Partnership's diverse base of 1,014 tenants as of June 1, 1998;

         o broaden its geographic and economic diversification while maximizing
           economies of scale;

         o acquire high-quality office and industrial properties and portfolios
           of such properties at attractive yields in selected submarkets within
           the Mid-Atlantic region (including Delaware, Maryland, New Jersey,
           New York, Ohio, Pennsylvania, Virginia and the District of Columbia),
           which management expects will experience economic growth;

         o capitalize on management's redevelopment expertise to selectively
           acquire, redevelop and reposition
           underperforming Properties in desirable locations;

         o acquire land in anticipation of developing office or industrial
           properties on a build-to-suit basis, under circumstances where
           significant pre-leasing can be arranged or as otherwise warranted by
           market conditions;

         o enhance the Operating Partnership's investment strategy through the
           pursuit of joint venture opportunities with high quality partners
           having attractive real estate holdings or significant financial
           resources; and

         o optimize the use of debt and equity financing to create a flexible
           and conservative capital structure that will enable the Operating
           Partnership to continue its aggressive growth strategy.

         As a result of its business objectives, the Operating Partnership has
recently experienced rapid growth. Between January 1, 1997 and June 1, 1998, the
Operating Partnership has acquired 117 office properties containing
approximately 8.6 million net rentable square feet and 25 industrial facilities
containing approximately 1.7 million net rentable square feet and, together with
the Development Entities, has acquired ownership of, or rights to acquire,
approximately 349.3 acres of undeveloped land. The aggregate purchase price for
the 142 Properties acquired by the Operating Partnership between January 1, 1997
and June 1, 1998 was approximately $986.5 million. The Operating Partnership
believes that, through the expertise and extensive relationships of its
management and its flexible capital structure, it will continue to identify and
capitalize on substantial opportunities for additional real estate investments
from a variety of sources, including institutional and private holders of real
estate seeking liquidity or reduction in their holdings or tax-deferred
dispositions.

         The Operating Partnership expects to continue to concentrate its real
estate activities in submarkets within the Mid-Atlantic region where it believes
that: (i) barriers to entry (such as zoning restrictions, infrastructure
limitations and limited developable land) are likely to create supply
constraints on office and industrial space; (ii) current market rents do not
justify new construction; (iii) it can maximize market penetration by
accumulating a critical mass of properties and thereby enhance operating
efficiencies; and (iv) there is potential for economic growth.

         The Operating Partnership's executive offices are located at 16 Campus
Boulevard, Newtown Square, Pennsylvania 19073 and its telephone number is (610)
325-5600.

Organization

         The Operating Partnership was organized and commenced its operations in
August 1996. Brandywine is the sole general partner of the Operating Partnership
and, through its Board of Trustees, manages the activities of the Operating
Partnership. Brandywine owns its assets and conducts its operations through the
Operating Partnership and subsidiaries of the Operating Partnership. The
structure of the Company as an "UPREIT" is designed to permit persons
contributing properties or interests in properties to the Company to defer some
or all of the tax liability they might otherwise incur. The Operating
Partnership conducts its real estate management services through a 

                                       -2-

<PAGE>

management company (the "Management Company"). The Operating Partnership,
through its ownership of preferred and common stock of the Management Company,
is entitled to receive 95% of amounts paid as dividends by the Management
Company. See "-- Management Company."

Recent Acquisitions

         At March 31, 1998, the Operating Partnership's portfolio consisted of
167 Properties totaling approximately 11.5 million net rentable square feet,
compared to 117 Properties containing approximately 7.1 million net rentable
square feet at December 31, 1997, 37 Properties containing approximately 2.0
million net rentable square feet at December 31, 1996, and 24 Properties
containing approximately 1.3 million net rentable square feet upon commencement
of the Operating Partnership's operations on August 22, 1996. Between April 1,
1998 and June 1, 1998, the Operating Partnership acquired 12 office properties
containing approximately 733,000 net rentable square feet for an aggregate
purchase price of approximately $90.1 million for a weighted average purchase
price of approximately $123 per square foot. The following table sets forth
certain information regarding Property acquisitions completed between April 1,
1998 and June 1, 1998:
<TABLE>
<CAPTION>

                                                                                          Percent
                                                                               Net         Leased                       Purchase
                                                                Number       Rentable      as of         Purchase         Price
                                                                  of          Square      June 1,          Price        Per Square
             Property Location                                Properties      Feet         1998        (in 000's)        Foot
- ---------------------------------------------------          ------------  -----------   ---------    -------------   -----------
<S>                                                               <C>           <C>          <C>            <C>            <C>
OFFICE PROPERTIES

Pennsylvania
           Harrisburg                                             11           411,639     95.0%          $48,500         $ 118

Delaware                                                           1           321,511     99.3%           41,625           129
                                                               ---------       -------     ----           --------        -----

                                                                             
TOTAL - OFFICE PROPERTIES / WEIGHTED AVERAGE                      12           733,150     96.9%          $90,125         $ 123
                                                               =========       =======     ====           =======         =====

</TABLE>
<PAGE>
Credit Facility

         On January 5, 1998, Brandywine and the Operating Partnership replaced
their $150 million secured revolving credit facility (the "1997 Credit
Facility") with a $300 million unsecured revolving credit facility (the "Credit
Facility"). On March 15, 1998, the maximum amount available to be borrowed under
the Credit Facility was increased from $300 million to $330 million. The Credit
Facility permits funds to be borrowed at an interest rate equal to the one, two,
three or six month LIBOR, plus, in each case, a range of 100 to 137.5 basis
points, depending on the Operating Partnership's then existing leverage and debt
rating. Alternatively, funds may be borrowed at a Base Rate equal to the higher
of (i) the Prime Rate or (ii) the Fed Funds Rate plus 50 basis points. As of
June 1, 1998, approximately $326.8 million was outstanding under the Credit
Facility and such amounts bore interest at an average rate of 6.9% per annum.
The Credit Facility matures on January 5, 2001 and is extendible to January 5,
2002 by the Company in the absence of default and upon payment of a fee. The
Credit Facility requires the Operating Partnership to maintain compliance with
customary financial and other covenants, including leverage ratios based on
gross implied asset value and debt service coverage ratios, limitations on
additional indebtedness, liens and distributions and a minimum net worth
requirement. A structuring fee equal to .15% of the maximum amount available
under the Credit Facility and a commitment fee equal to .15% of the first
$150,000,000 of availability under the Credit Facility plus .375% of the second
$150,000,000 of availability under the Credit Facility were paid to the lender
at the closing of the Credit Facility. In addition, an unused credit fee is
payable at the end of each quarter with respect to the portion of the Credit
Facility which is unutilized during such quarter. The fee is equal to .15% per
annum if at least fifty percent of the available credit under the Credit
Facility was utilized, based on daily averages, during such quarter and equal to
 .20% per annum if less than fifty percent of the available credit under the
Credit Facility was utilized, based on daily averages, during such quarter. An
annual fee in the amount of $25,000 is payable annually in advance to
NationsBank, N.A. as compensation for administration of the Credit Facility.

Additional Facility

         On May 7, 1998, Brandywine and the Operating Partnership entered into
an unsecured credit facility (the "Additional Facility") with NationsBank, N.A.
permitting advances of up to $150 million, subject to certain conditions. As of
June 1, 1998, approximately $25.0 million was outstanding under the Additional
Facility and such amounts bore interest at an average rate of 7.2% per annum.
The Additional Facility matures on November 7, 1998 and, in the absence of a
default by the Company, is subject to one two-month extension at the option of
the Company upon payment to NationsBank, N.A. of an extension fee equal to
one-fourth of one percent of the then principal amount outstanding under the
Additional Facility. The Additional Facility enables the Company to borrow funds
at an interest rate equal to LIBOR plus 150 basis points (LIBOR plus 175 basis
points during the two-month extension

                                       -3-

<PAGE>

period) or, at the Company's option, the Prime Rate plus 25 basis points (Prime
Rate plus 50 basis points during the two-month extension period). Amounts repaid
by the Company under the Additional Facility are not subject to reborrowing. The
Additional Facility incorporates the covenants contained in the Credit Facility.
In addition, the Additional Facility contains provisions requiring Brandywine
and the Operating Partnership to obtain a debt financing commitment and enter
into an underwriting agreement which together will provide sufficient funds for
repayment of the Additional Facility. At the closing of the Additional Facility,
the Company paid NationsBank, N.A. a $300,000 origination fee.

Mortgage and Other Debt

         Mortgage Indebtedness. The following table sets forth the Operating
Partnership's mortgage indebtedness outstanding at March 31, 1998.


                            Properties--Indebtedness

<TABLE>
<CAPTION>
                                                       Principal
                                                        Balance
                                                         as of         Interest           Annual
                                                       March 31,        Rate at            Debt
                                                         1998          March 31,         Service         Maturity       Prepayment
Property / Location                                   (in 000's)         1998          (in 000's)(1)       Date          Premiums
- -----------------------------------------             ------------    ------------    --------------     ----------    -------------
<S>                                                       <C>            <C>               <C>              <C>            <C>
Exton, PA
        486 Thomas Jones Way (2)                        $ 6,246         8.00%             $ 159            7/1998          None
        468 Creamery Way(2)                                                               
Newtown Square, PA                                                                        
        Lots 7, 8 and 9                                                                                   7/1998 to
        Newtown Square Business Campus                    1,638         9.00%               905            2/1999          None
Allentown, PA                                                                                           
        7310 Tilghman Street                              2,498         9.25%               257            3/2000            (5)
        6575 Snowdrift Road                               2,283         8.00%                57            7/1998          None
                                                                                                        
                                                                                                           8/1998,
Reading, PA                                                                                              8/1999 and
        Green Hills (undeveloped land)                    1,500         5.00%               565            8/2000          None
Marlton, NJ                                                                                             
        One Greentree Centre  (3)                         7,096         7.56%               708            1/2002            (6)
        Two Greentree Centre  (3)                                                                       
        Three Greentree Centre  (3)                                                                     
Cherry Hill, NJ                                                                                         
        457 Haddonfield Road  (4)                         8,256         8.00%               814            1/1999            (7)
Mt. Laurel, NJ                                                                                          
        1120 Executive Plaza                              5,859         9.875%              832            3/2002            (8)
        1000 Howard Boulevard                             5,717         9.25%               803           11/2004            (9)
Raleigh, NC                                                                                             
        5910 - 6090 Six Forks                             2,642         7.56%               264            1/2002           (10)
East Norriton, PA                                                                                       
        Norriton Office Center                            5,657         8.50%               528           10/2007           (11)
Lawrenceville, NJ                                                                                       
        1009 Lenox Drive                                 15,362         8.75%             1,632            7/2003          None
                                                      ----------                      ----------    
                                                                                                        
        Total Mortgage Indebtedness                    $ 64,754                         $ 7,524         
                                                      ==========                      ========== 
</TABLE>
<PAGE>
(1)  "Annual Debt Service" is calculated for the twelve-month period ending
     December 31, 1998 and represents normal principal and interest
     amortization. For loans that bear interest at a variable rate, the rates in
     effect at March 15, 1998 have been assumed to remain constant.
(2)  Both of these Properties secure a single loan.
(3)  All of these Properties secure a single loan.
(4)  Pursuant to the terms of this loan, the Operating Partnership has the right
     to borrow up to approximately $1.3 million to fund tenant improvements and
     leasing commissions and has a current outstanding balance of $805,000.
(5)  Two percent through December 31, 1998, which prepayment penalty is reduced
     by 1% in 1999.
(6)  This loan may not be prepaid unless the Six Forks loan is also prepaid. The
     prepayment penalty equals the greater of 1% of the principal amount prepaid
     or a yield maintenance premium.
(7)  One percent of the portion of the loan prepaid.
(8)  No prepayment is permitted until November, 1999, at which time the loan can
     be prepaid in full (but not in part) along with a penalty equal to the
     greater of 1% of this outstanding principal balance being prepaid or a
     yield maintenance premium.
(9)  No prepayment is permitted until March, 1999, at which time the loan can be
     prepaid in full (but not in part) along with a penalty equal to the greater
     of 1% the outstanding principal balance being prepaid or a yield
     maintenance premium.
(10) This loan may be prepaid without prepayment of the loan secured by One
     Greentree Centre, Two Greentree Centre and Three Greentree Centre, provided
     certain loan-to-value ratios and coverage tests with regard to the
     Greentree Centre loan are satisfied and upon payment of a premium equal to
     the greater of 1% of the principal amount prepaid or a yield maintenance
     premium.
(11) No prepayment is permitted until September, 2000, at which time the loan
     can be prepaid in full along with a penalty at a yield maintenance based
     upon treasury rates.
<PAGE>

         Other Indebtedness. The Operating Partnership incurred unsecured debt
in the principal amount of $3.8 million on November 14, 1996 in connection with
its acquisition of a property portfolio. The debt does not bear interest and is
payable in two installments: $2.5 million on June 30, 1998 and $1.3 million on
December 31, 1999. The Operating Partnership recorded a $548,000 adjustment to
the purchase price and a corresponding reduction in debt to reflect the fair
value of the note payable to the seller and will accrue interest expense to the
date of maturity.

         Guaranties. As of June 1, 1998, the Operating Partnership has
guaranteed: (i) repayment of a $16.8 million construction loan made to a
Development Entity; and (ii) repayment of a $500,000 loan made to a Development
Entity. Payment under these guaranties would constitute loan obligations of, or
preferred equity positions in, the applicable Development Entity in favor of the
Operating Partnership.

Management Company

         The Operating Partnership conducts its real estate management services
business through the Management Company. The Operating Partnership manages,
through the Management Company, certain of the Properties and additional
properties on behalf of unaffiliated third parties. As of March 31, 1998, the
Management Company was managing properties containing an aggregate of
approximately 11.6 million net rentable square feet, of which approximately 11.5
million net rentable square feet related to Properties then owned by the
Operating Partnership or subject to purchase options held by the Operating
Partnership, and approximately 102,000 net rentable square feet related to
properties owned by unaffiliated third parties. Through its ownership of 100% of
the preferred stock and 5% of the common stock of the Management Company, the
Operating Partnership is entitled to receive 95% of amounts paid as dividends by
the Management Company.

Industry Segments

         The Operating Partnership operates in one industry segment. The
Operating Partnership does not have any foreign operations and its business is
not seasonal.

Competition

         The leasing of real estate is highly competitive. The Properties
compete for tenants with similar properties located in its markets primarily on
the basis of location, rent charged, services provided, and the design and
condition of the improvements. The Operating Partnership also experiences
competition when attempting to acquire

                                      -4-

<PAGE>

real estate, including competition from domestic and foreign financial
institutions, other REIT's, life insurance companies, pension trusts, trust
funds, partnerships and individual investors.

Possible Environmental Liabilities

         Under various Federal, state and local laws, ordinances and
regulations, a current or previous owner or operator of real estate may be
required to investigate and clean up hazardous or toxic substances or releases
at such property and may be held liable to a governmental entity or to third
parties for property damage and for investigation and clean-up costs incurred by
such parties in connection with contamination. The cost of investigation,
remediation or removal of such substances may be substantial, and the presence
of such substances, or the failure to properly remediate such substances, may
adversely affect the owner's ability to sell or rent such property or to borrow
using such property as collateral. In connection with the ownership (direct or
indirect), operation, management and development of real properties, the Company
may be considered an owner or operator of such properties or as having arranged
for the disposal or treatment of hazardous or toxic substances and, therefore,
potentially liable for removal or remediation costs, as well as certain other
related costs, including governmental fines and injuries to persons and
property. All of the Properties have been subject to a Phase I or similar
environmental site assessment (which involves general inspections without soil
sampling or groundwater analysis) completed by independent environmental
consultants. Except as indicated below with respect to 110 Summit Drive at the
Whitelands Business Park in Exton, Pennsylvania (the " Whitelands Property") and
the Affected Properties at the Paint Works (as defined below), the Operating
Partnership is not aware of any environmental liability with respect to the
Properties that management believes would have a material adverse effect on the
Operating Partnership.

         An environmental assessment has identified environmental contamination
of potential concern with respect to the Whitelands Property. Petroleum
products, solvents and heavy metals were detected in the groundwater. These
contaminants are believed to be associated with debris deposited by third
parties in a quarry formerly located on the Whitelands Property. The Whitelands
Property previously appeared on the Comprehensive Environmental Response
Compensation and Liability Information System List, a list maintained by the
United States Environmental Protection Agency (the "EPA") of abandoned, inactive
or uncontrolled hazardous waste sites which may require cleanup. The EPA
conducted a preliminary assessment of the Whitelands Property in 1984, and
subsequently the Whitelands Property was removed from the list. While the
Operating Partnership believes it is unlikely that it will be required to
undertake remedial action with respect to such contamination, there can be no
assurance in this regard. If the Operating Partnership were required to
undertake remedial action on the Whitelands Property, it has been indemnified
through August 2001 against the cost of such remediation by Safeguard
Scientifics, Inc. ("SSI") subject to a limitation of approximately $2.0 million.
In the event SSI is unable to fulfill its obligations under its indemnity
agreement or the Operating Partnership is required to undertake remedial action
after the expiration of the indemnity, the costs associated with any remediation
could materially and adversely impact the Operating Partnership. Because the
Operating Partnership does not believe that any remediation at the Whitelands
Property is probable, no amounts have been accrued for any such potential
liability.

         An environmental assessment has identified environmental contamination
at land acquired by the Operating Partnership as part of its acquisition of
certain Properties that include 6 East Clementon and 1, 4, 5, 7 and 10 Foster
Avenue and an adjacent parking lot. These Properties (the "Affected Properties")
and certain non-affected Properties are commonly referred to as the Paint Works
Corporate Center ("Paint Works"). Volatile organic compounds, semi-volatile
organic compounds and metals were detected in the groundwater, surface soils and
sub-surface soils, principally on land acquired by the Operating Partnership
that is adjacent to the buildings located on the Affected Properties. These
contaminants are associated with the use by prior owners and operators of the
properties and are believed to be associated with the historic use of the
Affected Properties as a paint and varnish factory since the mid-nineteenth
century. The Affected Properties have been the subject of investigation by the
New Jersey Department of Environmental Protection ("NJDEP") since the
mid-1970's. The NJDEP has issued two directives to the former owners and
operators of the site, ordering them to investigate and remediate the
contamination at the site. The NJDEP has also entered into two administrative
consent orders (the "ACO's") with Sherwin-Williams, the former owner and
operator primarily responsible for the environmental contamination at the site,
pursuant to which

                                       -5-

<PAGE>

Sherwin-Williams has agreed to investigate and commence certain remediation. The
NJDEP has provided written assurances to the Company that the NJDEP will not
require the Company to investigate or remediate the site so long as
Sherwin-Williams continues to comply with the ACO's. In addition to the
foregoing, the NJDEP has also issued a letter of non-applicability for the
remainder of the Paint Works properties owned by the Operating Partnership at
the site. The Operating Partnership has also been indemnified against
Sherwin-Williams' failure to comply with the ACO's and from any migration of the
aforesaid compounds onto the adjacent Operating Partnership-owned properties
which are not part of the Affected Properties by PWCCW, a New Jersey general
partnership, and Robert K. Scarborough (collectively, "Scarborough"). In the
event that Sherwin-Williams ceases to comply with the ACO's and Scarborough is
unable to fulfill its obligations under its agreement with the Operating
Partnership, the Operating Partnership could potentially be responsible for
costs associated with any remediation. Because the Operating Partnership does
not believe that the occurrence of both of these events is probable, no amounts
have been accrued for any such potential liability.

         No assurance can be given that existing environmental studies with
respect to the Properties reveal all environmental liabilities or that any prior
owner of any such property did not create any material environmental condition
not known to the Operating Partnership. Moreover, no assurance can be given
that: (i) future laws, ordinances or regulations will not impose any material
environmental liability on the Operating Partnership, or (ii) the current
environmental condition of the Properties will not be affected by tenants and
occupants of the Properties, by the condition of properties in the vicinity of
the Properties (such as the presence of underground storage tanks) or by third
parties unrelated to the Operating Partnership.

Employees

         As of March 31, 1998, the Operating Partnership had no employees and
the Company had 129 employees.

Legal Proceedings

         The Operating Partnership is not currently involved in any material
legal proceedings nor, to the Operating Partnership's knowledge, is any material
legal proceeding currently threatened against it, other than routine litigation
arising in the ordinary course of business, substantially all of which is
expected to be covered by existing liability insurance.

Interests in the Operating Partnership

         Economic interests in the Operating Partnership are evidenced by units
of partnership interest ("Units"). The interest of the general partner is
evidenced by general partner units ("GP Units"), and interests of the limited
partners are evidenced by limited partner units ("LP Units"). The limited
partners of the Operating Partnership are persons who received LP Units in
connection with their contributions of direct or indirect interests in certain
Properties to the Operating Partnership. As of the date of this Form 10, the
Operating Partnership has only one class of LP Units outstanding, although the
Operating Partnership is permitted under its agreement of limited partnership
(the "Partnership Agreement") to issue additional classes or series of
partnership interest that have such rights, privileges, preferences and
designations as Brandywine, as the general partner, may specify.

         Although the Partnership Agreement does not obligate Brandywine to
contribute net proceeds of any equity offering to the Operating Partnership, the
Partnership Agreement provides that if Brandywine contributes the net proceeds
of a Common Share offering to the Operating Partnership, the Operating
Partnership shall issue to Brandywine a number of GP Units equal to the number
of Common Shares so issued.

         Holders of LP Units have the right, subject to certain time
restrictions, to tender their LP Units to the Operating Partnership for
redemption for cash equal to the fair market value of a common share of
beneficial interest, par value $.01 per share ("Common Share"), of Brandywine at
the time of such redemption. Brandywine, at its option, may elect to acquire any
such LP Unit presented for redemption for either one Common Share or cash.

                                       -6-

<PAGE>

Brandywine presently anticipates that it will elect to issue Common Shares to
acquire LP Units tendered for redemption, rather than paying cash. With each
such redemption, Brandywine's percentage ownership interest in the Operating
Partnership will increase. In addition, whenever Brandywine issues Common
Shares, Brandywine anticipates that it will contribute the net proceeds of the
issuance to the Operating Partnership and the Operating Partnership will issue
an equivalent number of GP Units to Brandywine.


Item 2.  Financial Information

Selected Financial Data


(in thousands, except per Unit/share data and number of properties)
<TABLE>
<CAPTION>


                                                                      Brandywine Operating Partnership, L.P.                   
                                                         ----------------------------------------------------------------- 
                                                                 Three months ended                        For the period
                                                                      March 31,               Year ended   August 22, 1996    
                                                         ----------------------------------   December 31, to December 31,     
                                                               1998               1997           1997            1996          
                                                         -----------------   --------------  -----------    --------------
<S>                                                           <C>                 <C>             <C>            <C> 
Operating Results:                                                                                         
Total revenue                                               $  33,102            $ 8,598       $ 61,060        $  7,202        
Income (loss) from continuing operations                        8,933              2,144         15,377             (26)       
Income (loss) from continuing operations                                                                                     
   per Unit/Common Share - diluted                          $    0.28            $  0.22        $  0.95        $  (0.01)       
 Cash distributions declared per Common                                                                                        
   Share/Unit                                               $    0.37             $ 0.35        $  1.44        $   0.46        
                                                                                                                               
Balance Sheet Data:                                                                                                            
Real estate investments, net of                                                                                               
  accumulated depreciation                                  $1,045,154          $ 208,825      $ 563,557       $ 151,901       
Total assets                                                 1,106,344            236,354        621,481         178,326       
Total mortgage and notes payable and notes                                                                                     
  payable under Credit Facility                                347,470             46,848        163,964          36,644       
Total liabilities                                              378,499             56,549        181,576          43,558       
Limited partner capital interest/Minority interest              23,775              8,091         17,774           7,792       
Partners'/Beneficiaries' equity                                704,070            171,714        422,131         126,976       
                                                                                                                               
Other Data:                                                                                                                    
Cash flows provided by (used in):                                                                                              
  Operating activities                                       $  21,468            $ 5,093       $ 33,572       $   2,107       
  Investing activities                                        (452,622)           (60,003)      (418,256)        (24,834)      
  Financing activities                                         439,754             55,029        395,847          40,845       
                                                                                                                               
Property Data:                                                                                                                 
Number of properties owned at period end                           167                 50            117              37       
Net rentable square feet owned at                                                                                              
  period end                                                    11,470              2,557          7,131           1,994       
</TABLE>
<PAGE>
[Restubed Table]
<TABLE>
<CAPTION>

                                                                            Brandywine Realty Trust                             
                                                       -----------------------------------------------------------------
                                                       For the period                                             
                                                       January 1, 1996              Year ended December 31,              
                                                        to August 21,     -------------------------------------------- 
                                                            1996            1995             1994            1993       
                                                       ---------------   -----------     ------------  -------------- 
<S>                                                        <C>               <C>              <C>             <C>
Operating Results:                                                                                                                
 Total revenue                                            $  2,828         $ 3,666          $ 4,192          $    -         
Income (loss) from continuing operations                       (91)           (824)          (1,841)          2,468         
Income (loss) from continguing operations -                                                                                
   per Unit/Common Share (diluted)                        $  (0.14)        $ (1.33)         $ (0.64)         $ 3.99         
 Cash distributions declared per Common                                                                                    
   Share/Unit                                             $   0.36          $ 1.65          $  4.71          $    -            
                                                                                                                           
Balance Sheet Data:                                                                                                        
 Real estate investments, net of                                                                                           
   accumulated depreciation                               $ 24,329        $ 13,709          $13,948          $    -        
Total assets                                                27,189          17,105           17,873           4,604        
Total mortgage and notes payable and notes                                                                                 
  payable under Credit Facility                             19,243           8,931            6,899               -        
Total liabilities                                           19,826           9,761            8,684              68        
Limited partner capital interest/Minority interest               -               -                -               -        
Partners'/Beneficiaries' equity                              7,363           7,344            9,189           4,536        
                                                                                                                           
Other Data:                                                                                                                
Cash flows provided by (used in):                                                                                          
   Operating activities                                      $ 461           $ 497          $  (628)         $    -        
  Investing activities                                     (10,567)           (701)           9,559           2,469        
  Financing activities                                       9,427            (722)          (9,635)              -        
                                                                                                                           
Property Data:                                                                                                             
Number of properties owned at period end                         4               4                4               7        
Net rentable square feet owned at                                                                                          
  period end                                                   255             255              255             546        
</TABLE>
<PAGE>
                                                                               
Management's Discussion and Analysis of Financial Condition and Results of
Operations

         The following discussion should be read in conjunction with the
financial statements appearing elsewhere herein. The results of operations,
liquidity and capital resources and cash flows of the Operating Partnership
include the historical results of operations of the Properties held by the
Operating Partnership (or Brandywine for those periods prior to August 22, 1996)
during the three months ended March 31, 1998 and 1997 and during the years ended
December 31, 1997, 1996 and 1995. This Form 10 contains forward-looking
statements for purposes of the Securities Act of 1933, as amended, and the
Securities Exchange Act of 1934, as amended, and as such may involve known and
unknown risks, uncertainties and other factors that may cause the actual
results, performance or achievements of the Operating Partnership to be
materially different from future results, performance or achievements expressed
or implied by such forward-looking statements. Although the Operating
Partnership believes that the expectations reflected in such forward-looking
statements are based upon reasonable assumptions, there can be no assurance that
these expectations will be realized. Factors that could cause actual results to
differ materially from current expectations include changes in general economic
conditions, changes in local real estate conditions, changes in industries in
which the Operating Partnership's principal tenants compete, the failure to
timely lease unoccupied space, the failure to timely re-lease occupied space
upon expiration of leases, the inability to generate sufficient revenues to meet
debt service payments and operating expenses, the unavailability of financing
and the failure of the Operating Partnership to manage its growth effectively.

Overview

         The Operating Partnership believes it has established an effective
platform in the suburban Philadelphia, Pennsylvania market that provides a
foundation for achieving the Operating Partnership's goal of maximizing market
penetration and operating economies of scale. The Operating Partnership believes
this platform provides a basis to continue its penetration into additional
targeted markets in the Mid-Atlantic United States through strategic
acquisitions intended to maximize Unit value.

         In 1997, the Operating Partnership purchased 80 office and industrial
properties for an aggregate purchase price of approximately $403.7 million and
invested approximately $5.5 million in unconsolidated real estate ventures,
which are referred to elsewhere in this Form 10 as Development Entities. The
Operating Partnership continued its growth during the three months ended March
31, 1998. During this period, the Operating Partnership acquired 50 office and
industrial properties for an aggregate purchase price of approximately $492.7
million and invested approximately $1.8 million in unconsolidated real estate
ventures (the "First Quarter Acquisitions"). These acquisitions and investments
increased the Operating Partnership's market share in the Suburban Philadelphia
Office and Industrial Market, and expanded the Operating Partnership's presence
into several other markets within Maryland, Delaware and New Jersey.

         The 1997 acquisitions were financed through a combination of proceeds
received by the Company from four public offerings of an aggregate of
approximately 15.4 million Common Shares which raised gross proceeds of

                                       -7-

<PAGE>

approximately $323.7 million (which were contributed to the Operating
Partnership in exchange for approximately 15.4 million GP Units), borrowings
under the Company's revolving credit facility and the issuance of 389,976 LP
Units valued at approximately $9.5 million. The First Quarter Acquisitions were
financed through a combination of proceeds received by the Company from three
public offerings of an aggregate of approximately 12.6 million Common Shares
which raised gross proceeds of approximately $303.4 million (which were
contributed to the Operating Partnership in exchange for approximately 12.6
million GP Units), borrowings under the Company's revolving credit facility and
the issuance of 153,036 LP Units valued at approximately $3.6 million.

         During the period from April 1, 1998 through June 1, 1998, the
Operating Partnership acquired 12 additional office properties containing an
aggregate of approximately 733,000 net rentable square feet for a total purchase
price of approximately $90.1 million and invested approximately $4.0 million in
unconsolidated real estate ventures. These acquisitions and investments expanded
the Operating Partnership's presence into Harrisburg, Pennsylvania while
reinforcing the Operating Partnership's presence in Delaware and the Suburban
Philadelphia Office and Industrial Market.

         The Operating Partnership receives income primarily from rental revenue
(including tenant reimbursements) from the Properties and, to a lesser extent,
from the management of certain properties owned by third parties. The Operating
Partnership expects that revenue growth in the next two years will result
primarily from additional acquisitions, as well as from rent increases in its
current portfolio.

Results of Operations

         For discussion purposes, (i) the results of operations for the year
ended December 31, 1996 combine the operating results of Brandywine, the
Operating Partnership's predecessor, for the period from January 1, 1996 to
August 21, 1996 and the operating results of the Operating Partnership for the
period from August 22, 1996 to December 31, 1996 and (ii) the results of
operations for the year ended December 31, 1995 reflect the operating results of
Brandywine for such year.

Comparison of the Three Months Ended March 31, 1998 to the Three Months Ended
March 31, 1997

         Net income before extraordinary items for the three months ended March
31, 1998 was $8.9 million compared with net income of $2.1 million for the
corresponding period in 1997. The increase was primarily attributable to the
operating results contributed by the 130 properties acquired by the Operating
Partnership between January 1, 1997 and March 31, 1998. The extraordinary item
included in the statement of operations for the three months ended March 31,
1998 reflects the Operating Partnership's write-off of costs associated with its
then existing secured credit facility which was replaced by an unsecured credit
facility (see "Liquidity and Capital Resources" for further discussion).

         Revenues, which include rental income, recoveries from tenants and
other income, increased by $24.5 million for the three months ended March 31,
1998 as compared to the corresponding prior year period primarily as a result of
property acquisitions and, to a lesser extent, increased occupancy. The impact
of the straight-line rent adjustment increased revenues by $924,000 for the
three months ended March 31, 1998.

         Property operating expenses, depreciation and amortization and
management fees increased in the aggregate by $13.7 million for the three months
ended March 31, 1998 as compared to the corresponding prior year period
primarily as a result of property acquisitions. Interest expense increased by
$3.4 million as a result of additional indebtedness incurred to finance certain
of the Operating Partnership's acquisitions. Administrative expenses increased
by approximately $467,000 primarily as a result of management and staffing
additions to support the Company's growth.

Comparison of the Year Ended December 31, 1997 to the Year Ended December 31,
1996

                                       -8-

<PAGE>

         Net income for the year ended December 31, 1997 was $15.4 million
compared with a net loss of $117,000 for the corresponding period in 1996. The
increase in net income was primarily attributable to the operating results
contributed by the 112 properties acquired from August 22, 1996 through December
31, 1997, and to a lesser extent attributable to a 1.9% increase in occupancy
from 1996 to 1997 at Properties owned on December 31, 1996.

         Revenues, which include rental income, recoveries from tenants and
other income, increased by $51.0 million for the year ended December 31, 1997 as
compared to the corresponding prior year period primarily as a result of
property acquisitions and, to a lesser extent, increased occupancy. The impact
of the straight-line rent adjustment increased revenues by $1.7 million for the
year ended December 31, 1997.

         Property operating expenses, depreciation and amortization and
management fees increased in the aggregate by $31.5 million for the year ended
December 31, 1997 as compared with the prior year period primarily as a result
of property acquisitions. Interest expense increased by $4.3 million as a result
of additional indebtedness incurred to finance certain of the Operating
Partnership's acquisitions.

Comparison of the Year Ended December 31, 1996 to the Year Ended December 31,
1995

         The Operating Partnership had a net loss of $117,000 for the year ended
December 31, 1996 compared with a net loss of $819,000 for the corresponding
period in 1995. Revenues, which include rental income, recoveries from tenants
and other income, increased by $6.4 million for the year ended December 31, 1996
as compared to 1995 primarily as a result of property acquisitions. These
increases were primarily attributable to the operating results contributed by
the 33 properties acquired during 1996. The impact of the straight-line rent
adjustment increased revenues by $337,000 for the year ended December 31, 1996.

         Property operating expenses, depreciation and amortization and
management fees increased in aggregate by $3.5 million for the year ended
December 31, 1996 as compared with the prior year period primarily as a result
of property acquisitions. Interest expense increased by $2.0 million as a result
of additional indebtedness incurred to finance certain of the Operating
Partnership's acquisitions.

Liquidity and Capital Resources

         During the three months ended March 31, 1998, the Operating Partnership
generated $21.5 million in cash flow from operating activities. Other sources of
cash flow consisted of (i) $163.1 million in net additional borrowings under the
Operating Partnership's revolving credit facility and (ii) $287.5 million in net
proceeds from share issuances. During the three months ended March 31, 1998, the
Operating Partnership used its cash to (i) finance the cash portion ($445.0
million) of the acquisition cost of 50 Properties, (ii) invest $1.8 million in
unconsolidated real estate ventures, (iii) fund capital expenditures and leasing
commissions of $4.8 million, (iv) pay distributions totaling $8.8 million to
Brandywine and its other partners, (v) pay scheduled amortization on mortgage
principal of $0.6 million, (vi) increase escrowed cash by $1.0 million, (vii)
pay other debt costs of $1.4 million and (viii) increase existing cash reserves
by $8.6 million.

         During the year ended December 31, 1997, the Operating Partnership
generated $33.6 million in cash flow from operating activities. Other sources of
cash flow consisted of (i) $115.2 million in net additional borrowings under the
Operating Partnership's revolving credit facility, (ii) $0.4 million in
additional mortgage notes payable, (iii) $305.1 million in net proceeds from
share issuances and (iv) escrowed cash of $1.8 million. During the year ended
December 31, 1997, the Company used an aggregate $456.1 million to (i) finance
the cash portion ($406.9 million) of the acquisition cost of 80 Properties, (ii)
invest $5.5 million in unconsolidated real estate ventures, (iii) fund capital
expenditures and leasing commissions of $7.7 million, (iv) pay distributions
totaling $18.5 million to Brandywine and its other partners, (v) pay scheduled
amortization on mortgage principal of $1.0 million, (vi) satisfy $3.5 million of
mortgage notes payable, (vii) purchase LP Units in the Operating Partnership for
$0.5 million, (viii) pay other debt costs of $1.3 million and (ix) increase
existing cash reserves by $11.2 million.

                                       -9-

<PAGE>

Capitalization

         During the first quarter of 1998, the Operating Partnership replaced
the 1997 Credit Facility with the 1998 Credit Facility. The interest rate borne
by the 1998 Credit Facility may be reduced by 37.5 to 75 basis points depending
on the Company's leverage and credit rating. On May 20, 1998, the 1998 Credit
Facility received an investment grade rating, reducing the interest rate by an
additional 60 basis points. The 1998 Credit Facility matures on January 5, 2001
and is extendible, under certain circumstances, at the Company's option to
January 5, 2002.

         As of March 31, 1998, the Operating Partnership had approximately
$347.5 million of debt outstanding, consisting of mortgage loans totaling $69.2
million and notes payable under the 1998 Credit Facility of $278.3 million. The
mortgage loans mature between July 1998 and November 2004. As of March 31, 1998,
the Operating Partnership had $51.7 million of remaining availability under the
1998 Credit Facility, which provides for total borrowings up to $330 million and
bore interest at a per annum floating rate equal to the 30, 60 or 90-day LIBOR,
plus 137.5 basis points. For the three months ended March 31, 1998, the weighted
average interest rates on the Operating Partnership's debt were 7.1% and 8.3%
for borrowings under the 1998 Credit Facility and mortgage notes payable,
respectively.

         Primarily, to provide financing for the Operating Partnership's
property acquisitions, on May 7, 1998 Brandywine and the Operating Partnership
entered into an unsecured credit facility (the "Additional Facility") with
NationsBank, N.A. permitting advances of up to $150 million, subject to certain
conditions. The Additional Facility matures on November 7, 1998, subject to a
two-month extension under certain circumstances, and allows the Operating
Partnership to borrow funds at an interest rate equal to LIBOR plus 150 basis
points or, at the Operating Partnership's option, the Prime Rate plus 25 basis
points. Amounts repaid by the Operating Partnership under the Additional
Facility are not subject to reborrowing. The Additional Credit Facility
incorporates the covenants contained in the 1998 Credit Facility.

         During the period January 1, 1998 through March 31, 1998, Brandywine
sold an aggregate 12,642,741 Common Shares for gross proceeds of $303.4 million
pursuant to 3 public offerings, which proceeds were contributed to the Operating
Partnership in exchange for 12,642,741 GP Units.

Short and Long Term Liquidity

         The Operating Partnership believes that its cash flow from operations
is adequate to fund its short-term liquidity requirements for the foreseeable
future. Cash flow from operations is generated primarily from rental revenues
and operating expense reimbursements from tenants and management services income
from the provision of services to third parties. The Operating Partnership
intends to use these funds to meet its short-term liquidity needs, which are to
fund operating expenses, debt service requirements, recurring capital
expenditures, tenant allowances, leasing commissions and the minimum
distribution required to maintain Brandywine's REIT qualification under the
Internal Revenue Code.

         As of March 31, 1998, the Operating Partnership had entered into
guaranties, and agreements contemplating the provision of guaranties, for the
benefit of unconsolidated real estate ventures, aggregating approximately $33.3
million. Payment under these guaranties would constitute loan obligations of, or
preferred equity positions in, the applicable unconsolidated real estate
venture.

         The Operating Partnership expects to meet its long-term liquidity
requirements, such as for property acquisitions and development, scheduled debt
maturities, renovations, expansions and other non-recurring capital
improvements, through the 1998 Credit Facility and other long-term secured and
unsecured indebtedness and the issuance of additional Units and the receipt of
additional cash contributions from Brandywine representing the proceeds of
Brandywine's issuance of equity securities.

                                      -10-

<PAGE>

Year 2000 Issue

         The Operating Partnership has recognized the need to ensure that its
systems, equipment and operations will not be adversely impacted upon the
arrival of the calendar year 2000. The Operating Partnership has initiated the
process of identifying potential areas of risk and the related effects on
planning, purchasing and daily operations. The Operating Partnership has not
quantified the potential adverse impact resulting from the failure of third
party suppliers and tenants to prepare for the year 2000. However, the Operating
Partnership does not anticipate the total cost of successfully converting all
internal systems, equipment and operations to year 2000 compliance to be
material.

Inflation

         A majority of the Operating Partnership's leases provide for separate
escalations of real estate taxes and operating expenses either on a triple net
basis or over a base amount. In addition, many of the office leases provide for
fixed base rent increases or indexed escalations (based on the CPI or other
measure). The Operating Partnership believes that inflationary increases in
expenses will be significantly offset by the expense reimbursement and
contractual rent increases.

Item 3.  Properties

         As of March 31, 1998, the Operating Partnership owned a portfolio of
139 office properties and 28 industrial facilities that contained an aggregate
of approximately 11.5 million net rentable square feet. One hundred forty-four
of the Properties (approximately 75.8% of the Operating Partnership's portfolio
based on net rentable square feet) were located in the Suburban Philadelphia
Office and Industrial Market. As of March 31, 1998, the Properties (excluding
three Properties under development or redevelopment) were approximately 93.3%
leased to 967 tenants. The office Properties are primarily one to three story
suburban office buildings containing an average of 68,818 net rentable square
feet. The industrial Properties accommodate a variety of tenant uses including
light manufacturing, assembly, distribution and warehousing. The Operating
Partnership carries comprehensive liability, fire, extended coverage and rental
loss insurance covering all of the Properties, with policy specifications and
insured limits which the Operating Partnership believes are adequate.

         The following table sets forth certain information with respect to the
Properties at March 31, 1998:

<PAGE>

<TABLE>
<CAPTION>
                                                                 Net           Percentage
                                                               Rentable        Leased as of
                                                Year            Square          March 31,
              Property Name                     Built            Feet           1998 (1)
- -------------------------------------------  ------------    -------------     -------------
<S>                                              <C>              <C>              <C>
OFFICE PROPERTIES

NORTHERN PHILADELPHIA SUBURBS

Horsham/Willow Grove/Jenkingtown, PA                   

   700 Business Center Drive          (2)         1986           82,009            99.2%
   800 Business Center Drive          (2)         1986


   One Progress Avenue                            1986           79,204           100.0%

   500 Enterprise Road                            1990           67,800            98.5%


   300 Welsh Road                                 1980           57,793           100.0%


   1155 Business Center Drive                     1990           51,388            94.9%


   650 Dresher Road                               1984           30,138           100.0%

   655 Business Center Drive                      1997           30,000            72.1%
                                                                -------          -------

                                                                398,332            96.8%
                                                                -------          -------

Blue Bell/Plymouth Meeting/Fort Washington

   501 Office Center Drive                        1974          110,514            74.6%


   920 Harvest Drive                              1990          104,505           100.0%


   500 Office Center Drive                        1974          100,447            97.8%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                  Net                 Percentage
                                                                Rentable             Leased as of
                                         Year                    Square                March 31,
           Property Name                 Built                    Feet                 1998 (1)
- ----------------------------------    ------------            ------------          ------------
<S>                                       <C>                     <C>                    <C>
 323 Norristown Road                      1988                    79,083                100.0%
                                                           
                                                           
 160 - 180 West Germantown Pike           1982                    73,750                100.0%
                                                           
 321 Norristown Road                      1988                    60,384                 99.4%
                                                           
                                                           
                                                           
                                                           
 2240/50 Butler Pike                      1984                    52,183                 99.4%
                                                           
                                                           
 520 Virginia Drive                       1987                    48,122                100.0%
                                                           
 220 Commerce Drive                       1985                    46,366                100.0%
                                                           
                                                           
 2260 Butler Pike                         1984                    31,892                100.0%
                                                           
                                                           
 120 West Germantown Pike                 1984                    30,546                100.0%
                                                           
                                                           
                                                           
 140 West Germantown Pike                 1984                    25,947                 98.7%
                                                             ------------             -----------
                                                       
                                        
                                        
                                                                 763,739                 95.9%
                                                             ------------             -----------
                                                              

Southern Bucks County

 3329 Street Road -Greenwood Square(2)    1985                   165,929                 75.8%
 3331 Street Road -Greenwood Square(2)    1986 
 3333 Street Road -Greenwood Square(2)    1988

105 Terry Drive                           1982                    84,730                 94.2%


2010 Cabot Boulevard                      1985                    53,421                 98.9%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                  Net                Percentage
                                                               Rentable             Leased as of
                                              Year              Square                March 31,
              Property Name                   Built              Feet                 1998 (1)
- -------------------------------------------------------      -------------          -------------
<S>                                        <C>                    <C>                    <C>
140 Terry Drive                           1982                   43,929                  93.3%



2000 Cabot Boulevard                      1985                   39,969                  81.4%



3000 Cabot Boulevard                      1986                   34,640                  96.3%



2260/70 Cabot Boulevard                   1984                   29,638                  95.4%



2005 Cabot Boulevard                      1985                   22,000                 100.0%
                                                            -------------           -------------

                                                                474,256                  87.6%
                                                            -------------           -------------

TOTAL NORTHERN PHILADELPHIA SUBURBS                           1,636,327                  93.7%
                                                           -------------            -------------


WESTERN PHILADELPHIA SUBURBS

Southern Route 202 Corridor, PA

   486 Thomas Jones Way                   1990                   51,500                  80.5%




   855 Springdale Drive                   1986                   50,750                 100.0%

   456 Creamery Way                       1987                   47,604                 100.0%

   110 Summit Drive                       1985                   43,660                 100.0%



   1336 Enterprise Drive                  1989                   38,470                 100.0%
 
   468 Creamery Way                       1990                   28,934                 100.0%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                   Net                Percentage
                                                                Rentable             Leased as of
                                          Year                   Square               March 31,
              Property Name               Built                   Feet                1998 (1)
- -------------------------------------  ----------             -------------         -------------
<S>                                       <C>                      <C>                    <C>
   748 Springdale Drive                   1986                    13,844                100.0%
                                                              -------------         -------------


                                                                 274,762                  96.3%
                                                              -------------         -------------

Main Line, PA

   300 Berwyn Park                        1989                   107,919                 100.0%



   200 Berwyn Park                        1987                    76,065                  100.0%



   16 Campus Boulevard                    1990                    65,463                  100.0%



   1974 Sproul Road                       1995                    62,934                  99.0%




   426 Lancaster Avenue                   1990                    61,102                 100.0%


   100 Berwyn Park                        1986                    58,612                  98.5%


   18 Campus Boulevard                    1990                    37,700                  47.6%
                                                              -------------         -------------



                                                                 469,795                  95.5%
                                                              -------------         -------------

King of Prussia / Valley Forge

   751-761 Fifth Avenue                   1967                   158,000                 100.0%

   640 Freedom Business Center (3)        1991                   132,000                 100.0%

   7000 Geerdes Boulevard                 1988                   112,905                 100.0%

   1111 Old Eagle School Road             1962                   107,000                 100.0%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                  Net                Percentage
                                                               Rentable             Leased as of
                                          Year                  Square                 March 31,
              Property Name               Built                  Feet                  1998 (1)
- ------------------------------------- ------------          -------------           -------------
<S>                                        <C>                    <C>                    <C>
   500 North Gulph Road                   1979                   92,851                  99.9%
                                                      
                                                      
                                                      
   620 Freedom Business Center            1986                   86,559                 100.0%
                                                      
                                                      
   630 Freedom Business Center            1989                   86,291                  99.9%
                                                      
                                                      
   741 First Avenue                       1966                   77,184                 100.0%
                                                      
   610 Freedom Business Center            1985                   63,031                  99.6%
                                                      
                                                      
                                                                          
   680 Allendale Road                     1962                   52,528                 100.0%
                                                      
   650 Park Avenue                        1968                   51,711                 100.0%
                                                      
                                                      
   875 First Avenue                       1966                   50,000                 100.0%
                                                      
   630 Clark Avenue                       1960                   50,000                 100.0%
                                                      
   620 Allendale Road                     1961                   50,000                 100.0%
                                                      
                                                      
   600 Park Avenue                        1964                   39,000                 100.0%
                                                      
   2490 Boulevard of the Generals         1975                   20,600                 100.0%
                                                      
                                                              1,229,660                 100.0%
                                                             -------------          -------------

Bala Cynwyd

   111 Presidential Boulevard             1997                  173,079                  99.4%
                                                             -------------          -------------

TOTAL WESTERN PHILADELPHIA SUBURBS                            2,147,296                  98.5%
                                                             -------------          -------------

READING / ALLENTOWN, PA

   100-300 Gundy Drive                    1970                  443,165                  83.8%


   100 Katchel Blvd                       1970                  131,076                  97.5%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                   Net               Percentage
                                                                Rentable            Leased as of
                                         Year                    Square               March 31,
              Property Name              Built                    Feet                 1998 (1)
- -----------------------------------   -----------            -------------          -------------
<S>                                       <C>                     <C>                    <C>
   1105 Berkshire Boulevard               1987                   68,984                  91.4%


   6575 Snowdrift Road                    1988                   46,250                 100.0%

   7248 Tilghman Street                   1987                   42,863                  93.8%



   7310 Tilghman Street                   1985                   40,000                  78.0%


   1150 Berkshire Boulevard               1979                   26,821                  91.7%
 
                                                                799,159                  88.1%
                                                             -------------          -------------

SOUTHERN NEW JERSEY

Burlington County

   10000 Midlantic Drive                  1990                  175,573                  96.2%


   2000 Midlantic Drive                   1989                  121,658                  84.9%



   1000 Howard Boulevard                  1988                  105,312                  99.6%


   1000 Atrium Way                        1989                   96,660                  90.3%





   1120 Executive Boulevard               1987                   95,124                  93.0%


   15000 Midlantic Drive                  1991                   84,056                 100.0%


   Three Greentree Centre                 1984                   69,101                  88.2%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                  Net                Percentage
                                                               Rentable             Leased as of
                                           Year                 Square                March 31,
              Property Name               Built                  Feet                  1998 (1)
- ----------------------------------   --------------          -------------          -------------
<S>                                        <C>                    <C>                    <C>
   9000 Midlantic Drive                   1989                   67,299                 100.0%

   4000/5000 West Lincoln Drive           1982                   60,010                  89.9%

   1000/2000 West Lincoln Drive           1982                   60,001                  95.2%

   Two Greentree Centre                   1983                   56,075                  81.0%



   One Greentree Centre                   1982                   55,838                  93.2%



   8000 Lincoln Drive                     1997                   54,923                 100.0%


   4000 Midlantic Drive                   1998                   46,945                   0.0%

   Five Eves Drive                        1986                   45,889                  90.1%


   9000 West Lincoln Drive                1983                   43,719                  93.2%

   Two Eves Drive                         1987                   37,517                  91.4%


   3000 West Lincoln Drive                1982                   36,070                  82.5%

   Four B Eves Drive                      1987                   27,038                  99.9%



   Four A Eves Drive                      1987                   24,631                  80.8%
                                                             -------------          -------------





                                                              1,363,439                  89.6%
                                                           -------------            -------------



Camden County

   Main Street - Plaza 1000               1988                  162,364                  99.1%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                 Net                 Percentage
                                                               Rentable             Leased as of
                                         Year                   Square                March 31,
              Property Name              Built                   Feet                  1998 (1)
- -----------------------------------   -------------          -------------          -------------
<S>                                       <C>                     <C>                   <C>
   457 Haddonfield Road                   1990                  121,737                  82.9%


   One South Union Place                  1982                  105,972                   0.0%

   1007 Laurel Oak Road                   1996                   78,205                 100.0%

   6 East Clementon Road                  1980                   66,043                  94.1%




   King & Harvard                         1974                   65,223                  13.6%

   Main Street - Piazza                   1990                   41,400                 100.0%




   20 East Clementon Road                 1986                   40,755                  90.4%




   Main Street - Promenade                1988                   31,445                  94.4%



   7 Foster Avenue                        1983                   21,843                  90.2%


   10 Foster Avenue                       1983                   18,941                  98.5%


   50 East Clementon Road                 1986                    3,080                 100.0%

   5 Foster Avenue                        1968                    2,000                  50.0%
                                                             -------------          -------------

                                                                759,008                  94.0%
                                                             -------------          -------------

Atlantic County

   500 Scarborough Drive                  1987                   44,750                  66.4%
</TABLE>

<PAGE>




<TABLE>
<CAPTION>
                                                                 Net                 Percentage
                                                               Rentable             Leased as of
                                         Year                   Square                March 31,
              Property Name              Built                   Feet                  1998 (1)
- -----------------------------------   -------------          -------------          -------------
<S>                                       <C>                     <C>                   <C>
   501 Scarborough Drive                  1987                   44,750                 100.0%
                                                             -------------          -------------



                                                                 89,500                  83.2%
                                                             -------------          -------------


TOTAL SOUTHERN NEW JERSEY                                     2,211,947                  91.0%
                                                             -------------          -------------

CENTRAL NEW JERSEY

   50 East State Street                   1989                  305,699                  92.9%

   1009 Lenox Drive                       1989                  183,342                  97.3%


   33 West State Street                   1988                  168,216                  99.7%

   993 Lenox Drive                        1985                  111,137                 100.0%



   997 Lenox Drive                        1987                   97,277                  92.4%


   104 Windsor Center Drive               1987                   66,855                 100.0%


   168 Franklin Corner Drive              1976                   32,000                  56.1%
                                                             -------------          -------------



TOTAL CENTRAL NEW JERSEY                                        964,526                  94.9%
                                                             -------------          -------------

DELAWARE

Northern Suburban Wimington

   201 North Walnut Street                1988                  311,286                  99.6%

   256-263 Chapman Road        (2)        1983                  179,722                  85.3%

   4550 New Linden Hill Road              1974                  105,000                  96.8%
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                 Net                 Percentage
                                                               Rentable             Leased as of
                                         Year                   Square                March 31,
              Property Name              Built                   Feet                  1998 (1)
- -----------------------------------   -------------          -------------          -------------
<S>                                       <C>                     <C>                   <C>
   One Righter Parkway (3)                1989                  104,828                 100.0%

   100 Commerce Drive                     1989                   63,898                  98.3%
                                                             -------------          -------------


TOTAL DELAWARE PROPERTIES                                       764,734                  95.8%
                                                             -------------          -------------


OTHER  MARKETS

Twin Forks Office Park, Raleigh, NC

   5910 -6090 Six Forks                   1982                   73,340                  95.9%

Saddlebrook, NJ

   Gardenstate Parkway & Route 80

   Park 80 West Plaza II                  1988                  266,173                  87.8%

   Park 80 West Plaza I                   1970                  217,016                  91.8%
                                                    

Frederick, MD

   Bowman Plains Industrial Park          1998                  208,774                   0.0%

Towson, MD

   100 West Road                          1988                  120,234                  95.6%

Cincinnati, OH

   5300 Kings Island Drive                1987                  156,175                 100.0%

TOTAL - OFFICE PROPERTIES                                     9,565,701                  92.3%
                                                             =============          =============
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                 Net                 Percentage
                                                               Rentable             Leased as of
                                         Year                   Square                March 31,
              Property Name              Built                   Feet                  1998 (1)
- -----------------------------------   -------------          -------------          -------------
<S>                                       <C>                     <C>                   <C>
INDUSTRIAL PROPERTIES

NORTHERN PHILADELPHIA SUBURBS

Southern Bucks County, PA

   4667 Somerton Road                     1974                  118,000                  83.1%





   2595 Metropolitan Drive                1981                   80,000                 100.0%

   180 Wheeler Court                      1975                   78,213                 100.0%


   2575 Metropolitan Drive                1981                   60,000                  64.6%

   2560 Metropolitan Drive                1983                   70,000                  99.9%



   2535 Metropolitan Drive                1974                   42,000                   0.0%

   2512 Metropolitan Drive                1981                   37,000                 100.0%




   2510 Metropolitan Drive                1981                   40,000                 100.0%

   2250 Cabot Boulevard                   1982                   40,000                 100.0%

   2200 Cabot Boulevard                   1979                   55,081                  98.2%
                                                             -------------          -------------

 
TOTAL NORTHERN PHILADELPHIA SUBURBS                             620,294                  86.4%
                                                             -------------          -------------

WESTERN PHILADELPHIA SUBURBS

Lansdale, PA

   1510 Gehman Road                       1990                  152,625                 100.0%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                 Net                 Percentage
                                                               Rentable             Leased as of
                                         Year                   Square                March 31,
              Property Name              Built                   Feet                  1998 (1)
- -----------------------------------   -------------          -------------          -------------
<S>                                       <C>                     <C>                   <C>
King of Prussia, PA

   201/221 King Manor Drive               1964                  124,960                 100.0%




   640-660 Allendale Road                 1962                  106,635                 100.0%

   780 Third Avenue                       1967                   72,000                  83.3%

   820 Third Avenue                       1970                   56,200                 100.0%

   650 Clark Avenue                       1965                   50,000                  86.4%


   741 Third Avenue                       1962                   50,000                  75.0%

TOTAL WESTERN PHILADELPHIA SUBURBS                              612,420                  94.9%
                                                             -------------          -------------


SOUTHERN NEW JERSEY

Burlington County, NJ

   500 Highland Drive                     1990                  127,340                 100.0%

   300 Highland Drive                     1990                  126,905                 100.0%




   400 Highland Drive                     1990                   68,660                 100.0%

   600 Highland Drive                     1990                   65,862                  82.5%



   1000 East Lincoln Drive                1981                   40,600                 100.0%
                                                             -------------          -------------


                                                                429,367                  97.3%
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                 Net                 Percentage
                                                               Rentable             Leased as of
                                         Year                   Square                March 31,
              Property Name              Built                   Feet                  1998 (1)
- -----------------------------------   -------------          -------------          -------------
<S>                                       <C>                     <C>                   <C>
Camden County, NJ

   55 U.S. Avenue                         1982                  138,700                  59.1%

   2 Foster Avenue                        1974                   50,761                  94.6%

   1 Foster Avenue                        1972                   24,255                 100.0%

   4 Foster Avenue                        1974                   23,372                 100.0%



   5 U.S. Avenue                          1987                    5,000                 100.0%
                                                             -------------          -------------

                                                                242,088                  75.4%
                                                             -------------          -------------

TOTAL SOUTHERN NEW JERSEY                                       671,455                  89.4%
                                                             -------------          -------------


TOTAL - INDUSTRIAL PROPERTIES                                 1,904,169                  90.2%
                                                             -------------          -------------

TOTAL ALL PROPERTIES / WEIGHTED AVG.                         11,469,870                  93.3%
                                                             =============          =============
</TABLE>
                                                                              


(1) Calculated by dividing net rentable square feet included in leases dated on
    or before June 1, 1998 by the aggregate net rentable square feet included in
    the Property.

(2) The data reflected for these properties are presented on a consolidated
    basis.

(3) This Property is subject to a ground lease.

         The following table sets forth certain information regarding rental
rates and lease expirations for the Properties owned by the Operating
Partnership at March 31, 1998, assuming none of the tenants exercise renewal
options or termination rights, if any, at or prior to scheduled expirations:
<PAGE>
<TABLE>
<CAPTION>

                                                                      Final        Percentage
                                   Rentable           Final         Annualized    of Total Final
                   Number of        Square         Annualized       Base Rent      Annualized
    Year of          Leases        Footage          Base Rent (1)   Per Square      Base Rent
     Lease          Expiring      Subject to          Under         Foot Under        Under
  Expiration       Within the      Expiring         Expiring         Expiring       Expiring        Cumulative
 December 31,         Year          Leases           Leases           Leases         Leases           Total
- ----------------   -----------   -------------   ----------------   -----------    --------------    -----------
<S>                    <C>           <C>                 <C>             <C>             <C>              <C>
     1998              304         1,305,144       $ 17,140,604       $ 13.13          11.6%            11.6%
     1999              216         1,269,982         14,127,101         11.12           9.6%            21.2%
     2000              181         1,413,028         17,936,757         12.69          12.1%            33.3%
     2001              166         1,601,299         23,470,989         14.66          15.9%            49.2%
     2002              146         1,659,712         22,566,572         13.60          15.3%            64.5%
     2003               67           542,590          8,969,644         16.53           6.1%            70.5%
     2004               25           317,420          5,648,838         17.80           3.8%            74.4%
     2005               28           847,172         15,390,635         18.17          10.4%            84.8%
     2006               12           422,107          4,317,557         10.23           2.9%            87.7%
     2007                8           118,880          2,135,510         17.96           1.4%            89.2%
2008 and after          33           907,673         16,011,478         17.64          10.8%           100.0%
                -----------       -----------      -------------   -----------    ---------
                 
                     1,186        10,405,007      $ 147,715,685       $ 14.20         100.0%
                ===========     =============   ================   ===========    =========
</TABLE>

(1)   "Final Annualized Base Rent" for each lease scheduled to expire represents
the cash rental rate of base rents, excluding tenant reimbursements, in the
final month prior to expiration multiplied by 12. Tenant reimbursements
generally include payment of real estate taxes, operating expenses and common
area maintenance and utility charges.

         The Properties owned by the Operating Partnership at March 31, 1998
were leased to 967 tenants that are engaged in a variety of businesses. The
following table sets forth information regarding leases at these Properties with
the 20 largest tenants as of March 31, 1998:
<TABLE>
<CAPTION>
                                                                                                                      Percentage of
                                                             Remaining    Aggregate      Percentage     Annualized       Aggregate
                                             Number            Lease       Square        of Aggregate    Escalated       Annualized
                                               of             Term in       Feet           Leased        Rent (in        Escalated
Tenant Name (a)                              Leases            Months      Leased        Square Feet   thousands) (b)       Rent
- -------------------------------------      ------------     ------------ -----------     ------------  --------------   ------------
<S>                                           <C>               <C>         <C>               <C>            <C>             <C>
State of New Jersey                             3               (c)        383,616           3.7%        $  9,690            5.5%
General Electric                                4               (d)        350,268           3.4%           6,396            3.6%
Lockheed Martin Corporation                     7               (e)        395,548           3.8%           4,819            2.7%
First USA Bank                                 22               (f)        273,574           2.6%           4,202            2.4%
Penske Truck Leasing                            9               93         194,740           1.9%           3,610            2.1%
Parsons Corporation                             4               84         200,000           1.9%           3,583            2.0%
Computer Sciences Corporation                   3               (g)         99,006           1.0%           2,335            1.3%
Kimberly Clark Corporation                      1               93          93,014           0.9%           2,000            1.1%
Aetna Life Insurance Corporation                1               51         100,670           1.0%           1,858            1.1%
Consolidated Rail Corporation ('Conrail")       1               27          69,511           0.7%           1,746            1.0%
Reliance Insurance Company                      4               (h)         73,748           0.7%           1,575            0.9%
New Jersey Bell Telephone                       1              100          74,728           0.7%           1,482            0.8%
QAD, Inc.                                       1               41          61,900           0.6%           1,377            0.8%
Axiom, Inc.                                     2              121          62,752           0.6%           1,335            0.8%
Automotive Rentals, Inc.                        1               29          67,299           0.6%           1,322            0.8%
Delaware Valley Financial Services, Inc.        7               (i)         57,057           0.5%           1,293            0.7%
Stark & Stark, Inc.                             1               77          63,038           0.6%           1,292            0.7%
PECO                                            1               27         107,000           1.0%           1,231            0.7%
Telespectrum Worldwide, Inc.                    2               (j)        166,635           1.6%           1,048            0.6%
American Business Financial Services, Inc.     16               58          40,277           0.4%           1,035            0.6%
                                           ------------     ------------ -----------     ------------  --------------   ------------

Consolidated Total / Weighted Average          91               77       2,934,381            28%        $ 53,229           30.4%
                                           ============     ============ ===========     ============  ==============   ============
</TABLE>

<PAGE>

(a) The identified tenant may include affiliates in certain circumstances.

(b) Annualized Escalated Rent represents the monthly Escalated Rent for each
    lease in effect at March 31, 1998 multiplied by 12. Escalated Rent
    represents fixed base rental amounts plus pass-throughs of operating
    expenses, including electricity costs. The Operating Partnership estimates
    operating expense pass-throughs based on historical amounts and comparable
    market data.

(c) Consists of three leases: a lease representing 222,987 net rentable square
    feet that expires in September 2009, a lease representing 117,428 net
    rentable square feet that expires in August 2008 and a lease representing
    43,201 net rentable square feet that expires in July 2000.

(d) Consists of four leases: a lease representing 156,175 net rentable square
    feet that expires in May 2005, a lease representing 132,000 net rentable
    square feet that expires in September 2001, a lease representing 61,102 net
    rentable square feet that expires in September 2003 and a lease representing
    991 net rentable square feet that expires in June 1999.

(e) Consists of seven leases: a lease representing 158,000 net rentable square
    feet that expires in September 2002, a lease representing 112,905 net
    rentable square feet that expires in December 1998, a lease representing
    53,159 net rentable square feet that expires in October 1998, a lease
    representing 30,280 net rentable square feet that expires in May 1999, a
    lease representing 14,750 net rentable square feet that expires in January
    2001, a lease representing 13,956 net rentable square feet that expires in
    October 2004 and a lease representing 12,498 net rentable square feet that
    expires in June 1998.

(f) Consists of twenty two leases: twenty one leases representing 271,894 net
    rentable square feet that expire in January 2012 and a lease representing
    1,680 net rentable square feet that expires in July 2012.

(g) Consists of three leases: a lease representing 41,176 net rentable square
    feet that expires in May 2002, a lease representing 36,830 net rentable
    square feet that expires in November 2001 and a lease representing 15,000
    net rentable square feet that expires in October 2000.

(h) Consists of four leases: an aggregate of two leases representing 68,841 net
    rentable square feet that expire in October 2002, a lease representing 3,499
    net rentable square feet that expires in April 1999 and a lease representing
    1,408 net rentable square feet, which the tenant occupies on a
    month-to-month basis.

(i) Consists of seven leases: six leases representing 55,857 net rentable square
    feet in the aggregate that expire in March 2004 and a lease representing
    1,200 net rentable square feet (storage) that is leased on a month-to-month
    basis.

(j) Consists of two leases: a lease representing 106,635 net rentable square
    feet that expires in August 2002 and a lease representing 60,000 net
    rentable square feet that expires in December 1998.

                                      -11-
<PAGE>

Development Entities

         Since January 1, 1997, the Operating Partnership and subsidiaries
wholly-owned by the Operating Partnership have entered into eight Development
Entities.

         On September 19, 1997, the Operating Partnership acquired a 50%
interest in a newly-formed limited liability company that developed a
three-story office property in Newark, Delaware containing approximately 150,000
net rentable square feet. Development of this property was completed in May 1998
and Computer Sciences Corporation has leased the entire facility through May 31,
2007. The Operating Partnership's equity contribution to this company was
approximately $2.0 million. Total project costs were approximately $17.0
million. Project costs have been financed primarily through a third party loan.

         On September 19, 1997, the Operating Partnership also acquired a 50%
membership interest in a newly-formed limited liability company that acquired
two parcels of undeveloped land containing an aggregate of approximately 11
acres in Newark, Delaware for a purchase price of approximately $1.0 million in
anticipation of the construction on such land of two office buildings. The
Operating Partnership's initial equity contribution to this company was $1.0
million. Architectural plans for the development of the land have not been
completed and development of the land is subject to receipt of a construction
loan as well as certain land development and other necessary approvals.

         On November 4, 1997, the Operating Partnership acquired a 65% general
partner interest in a newly-formed limited partnership that is currently in the
process of developing a four-story office property in West Conshohocken,
Pennsylvania which is expected to contain approximately 85,000 net rentable
square feet upon completion. The Operating Partnership has committed to make an
equity investment of an estimated $6.75 million upon maturity of the
construction loan that is financing construction of the office property. Total
project costs are estimated to be approximately $16.8 million, with construction
scheduled to be completed during the fourth quarter of 1998. Project costs are
being financed primarily through a $16.8 million third party construction loan,
the repayment of which has been guaranteed by the Operating Partnership.

         On November 4, 1997, the Operating Partnership also acquired a 65%
general partner interest in a newly-formed limited partnership that acquired an
option to purchase approximately 9.3 acres of undeveloped land in West
Conshohocken, Pennsylvania for approximately $3.2 million, subject to reduction
in certain circumstances. The Operating Partnership believes this land can
accommodate an office building containing approximately 210,000 net rentable
square feet. The term of the option is one-year, subject to extension for an
additional one-year period. The Operating Partnership's initial equity
contribution to this partnership was approximately $48,000.

         As part of the November 4, 1997 transactions, the Operating Partnership
also acquired the right to become a 35% general partner in an existing limited
partnership that owns a four-story office property containing approximately
83,000 net rentable square feet in Conshohocken, Pennsylvania. On May 11, 1998,
the Operating Partnership acquired such 35% interest for approximately $2.7
million. As of May 11, 1998, this property was fully leased to seven tenants.

         On December 31, 1997, the Operating Partnership acquired a 50% general
partner interest in a newly-formed general partnership that was established to
own and operate a project involving the redevelopment of a building situated on
approximately five acres in Delaware County, Pennsylvania. The building has
previously been used for retail and office purposes, and the partnership intends
to redevelop the building in 1998 at an estimated cost of approximately $1.0
million for office purposes. The Operating Partnership's initial equity
contribution to this partnership was approximately $850,000, and the Operating
Partnership has agreed to contribute up to $650,000 in connection with the
redevelopment of the building. The Operating Partnership has also guaranteed
payment of $500,000 to secure a $1.75 million bank loan that funded a portion of
the purchase price of the building and related land.

                                      -12-

<PAGE>

         On February 3, 1998, the Operating Partnership acquired an
approximately 60% economic interest in a partnership that owns approximately
12.5 acres of land in Plymouth Meeting, Pennsylvania. The Operating Partnership
believes the land (on which an inn is currently situated) can accommodate an
office building containing approximately 130,000 net rentable square feet. The
Operating Partnership acquired its interest through a loan and equity
contribution aggregating approximately $4.2 million. As of the date of this Form
10, the partnership has not determined its plans for the land.

         On February 25, 1998, the Operating Partnership acquired a 50% general
partner interest in a newly-formed general partnership that was established to
develop a three-story office property containing approximately 180,000 net
rentable square feet in Chester County, Pennsylvania. Total project costs are
estimated to be approximately $35.9 million. The Operating Partnership has
agreed to contribute $5.4 million to the partnership, and the other partner has
agreed to contribute approximately 12.5 acres of undeveloped land to the
partnership upon receipt of a construction loan. Architectural plans for the
development of the land have not been completed and development of the land is
subject to receipt of a construction loan as well as certain land development
and other necessary approvals.

Item 4.  Security Ownership of Certain Beneficial Owners and Management

         The Operating Partnership is managed by Brandywine, as the sole general
partner of the Operating Partnership. The following table sets forth the
beneficial ownership of LP Units as of June 1, 1998 for each person that the
Operating Partnership believes is the beneficial owner of more than 5% of the
outstanding LP Units. With the exception of Anthony A. Nichols, Sr., whose
beneficial ownership of LP Units as of June 1, 1998 is also set forth below, no
trustee or executive officer of Brandywine beneficially owned any LP Units as of
June 1, 1998.

           Name and Business                  Number of           Percentage of
      Address of Beneficial Owner             LP Units              LP Units
 ------------------------------------------   -------------      ---------------
Brandywine Realty Trust                        415,786                30.4%
Robert K. Scarborough(1)                       265,384                19.4%
Ronald Berman(2)                               153,036                11.2%
Blair S. Trogner, Sr.(3)                       138,128                10.1%
John S. Trogner, Sr.(3)                         89,801                 6.6%
John S. Trogner, Jr.(3)                         73,048                 5.3%
Anthony A. Nichols, Sr.(4)                       2,742                  *
All Trustees and executive officers
  of Brandywine as a group (8 persons)           2,742                  *
- -------------
* less than one percent

(1)  Such LP holder has a business address of: c/o Scarborough Properties, 20 E.
     Clementon Road, Suite 201, Gibbsboro, NJ 08026.

(2)  Includes (i) 57, 126 LP Units held by Brookstone Holdings I, L.L.C., (ii)
     7,579 LP Units held by Brookstone Holdings of Del.-4, L.L.C., (iii) 80,445
     LP Units held by Brookstone Holdings of Del.-5, L.L.C. and (iv) 7,886 LP
     Units held by Brookstone Holdings of Del.-6, L.L.C. Mr. Berman holds
     investment and voting power over the LP Units held by all such entities.
     Mr. Berman has a business address of: c/o R. Berman Development Co.,
     L.L.C., 150 West State Street, P.O. Box 4571, Trenton, NJ 08611.

(3)  Such LP holders have a business address of: P.O. Box 0779, Camp Hill, PA
     17001.

                                      -13-


<PAGE>

(4)      All such LP Units are held by The Nichols Company ("TNC"). Mr. Nichols,
         Chairman of the Board of Trustees of the Company, shares investment and
         voting power over the LP Units held by TNC. Mr. Nichols has a business
         address of : 16 Campus Boulevard, Newtown Square, PA 19073.

         The information concerning the beneficial ownership of Common Shares by
the Trustees and executive officers of Brandywine, as well as by persons
believed by Brandywine to be the beneficial owners of more than 5% of the
outstanding Common Shares, is hereby incorporated by reference to the material
appearing under Item 12 "Security Ownership of Certain Beneficial Owners and
Management" in Brandywine's Annual Report on Form 10-K for the year ended
December 31, 1997 (the "Brandywine 1997 Form 10-K").

Item 5.  Directors and Executive Officers

         The Operating Partnership is managed by Brandywine, as the sole general
partner of the Operating Partnership. The information required by this Item is
hereby incorporated by reference to the material appearing under Item 10
"Trustees and Executive Officers of the Registrant" in the Brandywine 1997 Form
10-K.

Item 6.  Executive Compensation

         The Operating Partnership is managed by Brandywine, as the sole general
partner of the Operating Partnership. Consequently, the Operating Partnership
has no executive officers. The information required by this Item reflects
compensation paid to the executive officers of Brandywine and is hereby
incorporated by reference to the material appearing under Item 11 "Executive
Compensation" in the Brandywine 1997 Form 10-K.

Item 7.  Certain Relationships and Related Transactions

         The Operating Partnership is managed by Brandywine, as the sole general
partner of the Operating Partnership. Walter D'Alessio, a member of Brandywine's
Board of Trustees and Compensation Committee, is President of Legg Mason Real
Estate Services, Inc., a mortgage banking firm and a subsidiary of Legg Mason,
Inc. Legg Mason, Inc. is the parent of Legg Mason Wood Walker, Incorporated,
which was an underwriter of a public offering of Common Shares consummated by
Brandywine on April 21, 1998. The additional information required by this Item
is hereby incorporated by reference to the material appearing under Item 13
"Certain Relationships and Related Transactions" in the Brandywine 1997 Form
10-K.

Item 8.  Legal Proceedings

         The Operating Partnership is not currently involved in any material
legal proceedings nor, to the Operating Partnership's knowledge, is any material
legal proceeding currently threatened against it, other than routine litigation
arising in the ordinary course of business, substantially all of which is
expected to be covered by existing liability insurance.

Item 9.  Market Price of and Dividends on the Registrant's Common Equity and
Related Stockholder Matters

         There is no established public trading market for the Units. As of June
1, 1998, 37,636,457 GP Units were outstanding and 1,369,908 LP Units were
outstanding. As of June 1, 1998, Brandywine was the only holder of GP Units and
there were 23 holders of record of LP Units (including Brandywine). The
Operating Partnership has agreed to issue an additional 44,322 LP Units by
September 1, 1999 to two contributors of Properties.

         To the Operating Partnership's knowledge, there have been no bids for
the Units and, accordingly, there is no available information with respect to
high and low quotations of the Units. The following table sets forth the
quarterly distributions paid by the Operating Partnership to holders of its LP
Units with respect to each full quarterly period since the Operating Partnership
commenced operations on August 22, 1996.

                                      -14-

<PAGE>

                                                          Distributions
                                                       Declared For Quarter
                                                    ---------------------------

                           Third Quarter 1996               $0.21 (1)
                           Fourth Quarter 1996              $0.25 (2)

                           First Quarter 1997               $0.35
                           Second Quarter 1997              $0.36
                           Third Quarter 1997               $0.36
                           Fourth Quarter 1997              $0.37

                           First Quarter 1998               $0.37

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

(1)      On November 1, 1996, the Operating Partnership declared a distribution
         of $0.21 per LP Unit relating to third quarter operations that was paid
         to LP holders of record as of November 11, 1996.

(2)      Represents a distribution at a rate per LP Unit of $0.21 for the period
         from October 1, 1996 through December 1, 1996 (the day prior to the
         closing of Brandywine's December 2, 1996 public offering of Common
         Shares) and a distribution at a rate per share of $0.35 for the period
         from December 2, 1996 through December 31, 1996.


         As of the date of this Form 10, (i) there are no Units subject to
outstanding options or warrants to purchase, or securities convertible into,
Units, (ii) there are 20,741 Units which could be sold pursuant to Rule 144
under the Securities Act of 1933, as amended, subject to other restrictions on
transfer in the securities laws or in the Partnership Agreement and (iii) there
are no Units that have been, or are proposed to be, publicly offered by the
Operating Partnership. The Operating Partnership has agreed to pay three
contributors of Properties an aggregate of approximately $1.3 million by June 7,
2001, and such contributors may elect to receive payment in the form of LP Units
valued at $23.75 each. Although the Operating Partnership has not entered into
any agreements to register the Units under the Securities Act of 1933, as
amended, Brandywine has agreed to register the offer and sale by the holders of
Common Shares issuable upon redemption of LP Units.

Item 10.  Recent Sales of Unregistered Securities

         Since its formation in August 1996, the Operating Partnership has
issued Units in private placements in reliance on an exemption under Section
4(2) of the Securities Act of 1933, as amended, in the amounts and for the
consideration set forth below.

Common Share Offerings of Brandywine

         On December 2, 1996, the Operating Partnership issued 1,345,454 GP
Units to Brandywine in exchange for the contribution of the net proceeds
(approximately $22.2 million) from two concurrent private offerings of
Brandywine. The Operating Partnership used the proceeds to fund the purchase of
additional properties, to repay indebtedness and for working capital purposes.


         On December 2, 1996, the Operating Partnership issued 4,000,000 GP
Units to Brandywine in exchange for the contribution of the net proceeds
(approximately $61.9 million) from an underwritten public offering of
Brandywine. On December 13, 1997, the Operating Partnership issued an additional
600,000 GP Units to

                                      -15-

<PAGE>

Brandywine in exchange for the contribution of the net proceeds (approximately
$9.3 million) from the exercise of the underwriters' over-allotment option
granted by Brandywine in such public offering. The Operating Partnership used
the proceeds to fund the purchase of additional properties, to repay
indebtedness and for working capital purposes.

         On March 4, 1997, the Operating Partnership issued 2,200,000 GP Units
to Brandywine in exchange for the contribution of the net proceeds
(approximately $43.0 million) from an underwritten public offering of
Brandywine. On March 17, 1997, the Operating Partnership issued an additional
175,000 GP Units to Brandywine in exchange for the contribution of the net
proceeds (approximately $3.4 million) from the exercise of the underwriter's
over-allotment option granted by Brandywine in such public offering. The
Operating Partnership used the proceeds to fund the purchase of additional
properties, to repay indebtedness and for working capital purposes.

         On July 28, 1997, the Operating Partnership issued 10,000,000 GP Units
to Brandywine in exchange for the contribution of the net proceeds
(approximately $196.6 million) from an underwritten public offering of
Brandywine. On August 20, 1997, the Operating Partnership issued an additional
1,500,000 GP Units to Brandywine in exchange for the contribution of the net
proceeds (approximately $29.5 million) from the exercise of the underwriter's
over-allotment option granted by Brandywine in such public offering. The
Operating Partnership used the proceeds to fund the purchase of additional
properties, to repay indebtedness and for working capital purposes.

         On September 16, 1997, the Operating Partnership issued 786,840 GP
Units to Brandywine in exchange for the contribution of the net proceeds
(approximately $16.7 million) from an underwritten public offering of
Brandywine. The Operating Partnership used the proceeds to fund the purchase of
additional properties and for working capital purposes.

         On December 23, 1997, the Operating Partnership issued 751,269 GP Units
to Brandywine in exchange for the contribution of the net proceeds
(approximately $17.7 million) from an underwritten public offering of
Brandywine. The Operating Partnership used the proceeds to repay indebtedness.

         On February 4, 1998, the Operating Partnership issued 10,000,000 GP
Units to Brandywine in exchange for the contribution of the net proceeds
(approximately $227.7 million) from an underwritten public offering of
Brandywine. On March 6, 1998, the Operating Partnership issued an additional
1,000,000 GP Units to Brandywine in exchange for the contribution of the net
proceeds (approximately $22.8 million) from the exercise of the underwriter's
over-allotment option granted by Brandywine in such public offering. The
Operating Partnership used the proceeds to repay indebtedness and for working
capital purposes.

         On February 18, 1998, the Operating Partnership issued 1,012,820 GP
Units to Brandywine in exchange for the contribution of the net proceeds
(approximately $23.2 million) from an underwritten public offering of
Brandywine. The Operating Partnership used the proceeds to repay indebtedness.

         On February 27, 1998, the Operating Partnership issued 629,921 GP Units
to Brandywine in exchange for the contribution of the net proceeds
(approximately $14.3 million) from an underwritten public offering of
Brandywine. The Operating Partnership used the proceeds to repay indebtedness.

         On April 21, 1998, the Operating Partnership issued 625,000 GP Units to
Brandywine in exchange for the contribution of the net proceeds (approximately
$14.3 million) from an underwritten public offering of Brandywine.
The Operating Partnership used the proceeds to repay indebtedness.

         On May 20, 1998, the Operating Partnership issued 1,248 GP Units to
Brandywine in exchange for 1,248 Common Shares from Brandywine, and transferred
these Common Shares to three members of Brandywine's Board of Trustees in
payment of one-half of the annual trustee fee payable to non-employee Trustees.

                                      -16-

<PAGE>

Property Acquisitions

         On August 22, 1996, the Operating Partnership issued 495,829 LP Units
as part of the acquisition price for a portfolio of 19 office and industrial
properties. The Operating Partnership also agreed to issue to two of the
contributors of these properties an additional 44,322 LP Units by September 1,
1999.

          On December 11, 1997, the Operating Partnership issued 389,976 LP
Units as part of the acquisition price for a portfolio of 14 office and
industrial properties.

         On March 31, 1998, the Operating Partnership issued 153,036 LP Units as
part of the acquisition price for a portfolio of six office properties.

         On May 11, 1998, the Operating Partnership issued 390,364 LP Units as
part of the acquisition price for a portfolio of 11 office properties.

Item 11.  Description of Registrant's Securities to be Registered

         The following description is only a summary of the material provisions
of the Partnership Agreement and is subject to, and qualified in its entirety
by, the Partnership Agreement.

         Management. The Operating Partnership is organized as a Delaware
limited partnership pursuant to the terms of the Partnership Agreement.
Generally, pursuant to the Partnership Agreement, Brandywine, as the sole
general partner of the Operating Partnership, has full, exclusive and complete
responsibility and discretion in the management, operation and control of the
Operating Partnership, including the ability to cause the Operating Partnership
to enter into certain major or extraordinary transactions, including mergers,
acquisitions and refinancings. Holders of LP Units do not have the right to
remove the general partner, to compel dissolution of the Partnership or to vote
in the election of Trustees of Brandywine. Holders of LP Units do not have
appraisal or dissenter's rights. The consent of holders of at least fifty
percent of the outstanding LP Units is required with respect to a general
assignment by the Operating Partnership for the benefit of creditors or the
appointment of a custodian, receiver or trustee for any of the assets of the
Operating Partnership or the institution of any proceeding for bankruptcy of the
Operating Partnership.

         Transfer of LP Units. The Partnership Agreement provides that holders
of LP Units may transfer all or a portion of their LP Units without the consent
of the general partner subject to certain regulatory and other restrictions set
forth in the Partnership Agreement. These restrictions include provisions
intended to ensure compliance with securities and tax laws. Brandywine may not
transfer its GP Units except in limited circumstances such as to an entity that
is acquiring substantially all of its assets.

         Issuance of Additional Units; No Preemptive Rights. The Operating
Partnership is authorized to issue Units and other partnership interests to such
persons, for such consideration and on such terms and conditions as Brandywine,
as the general partner, in its sole discretion, may deem appropriate, provided
that if Brandywine issues additional Common Shares and contributes the net
proceeds to the Operating Partnership, then the Operating Partnership will issue
to Brandywine a number of GP Units equal to the number of Common Shares so
issued. No holder of LP Units has preemptive or preferential rights with respect
to the issuance of additional Units by the Operating Partnership.

         Distributions and Allocations. In general, the Partnership Agreement
provides the general partner with sole discretion to determine the amount and
timing of any distributions to the partners, which distributions shall be made
to the partners pro rata based on the number of Units held by them as of the
applicable record date, subject to such preferential or subordinated
distributions as may be required to be made by the Operating Partnership on any
additional class of Units that are then outstanding. Upon liquidation of the
Operating Partnership, after payment of, or adequate provision for, debts and
obligations of the Operating Partnership, including any partner loans, any

                                      -17-

<PAGE>

remaining assets of the Operating Partnership will be distributed to all
partners with positive capital accounts in accordance with their respective
positive capital account balances. If the general partner has a negative balance
in its capital account following a liquidation of the Operating Partnership, it
will be obligated to contribute cash to the Operating Partnership equal to the
negative balance in its capital account.

         Additional Capital Contributions; Limited Liability. The Partnership
Agreement provides that no holder of LP Units shall be required to contribute
capital to the Operating Partnership except to the extent such holder agrees to
make a capital contribution to the Operating Partnership. The Partnership
Agreement also provides that holders of LP Units shall not be personally liable
for any obligations of the Operating Partnership except to the extent provided
by law.

         Profit and loss of the Operating Partnership for each fiscal year of
the Operating Partnership generally will be allocated among the partners in
accordance with their respective interests in the Operating Partnership. Taxable
income and loss will be allocated in the same manner, subject to compliance with
the provisions of Code sections 704(b) and 704(c) and Treasury Regulations
promulgated thereunder.

         Redemption Right. Pursuant to the Partnership Agreement, each holder of
LP Units has the right, subject to certain limitations, to require the Operating
Partnership to redeem all or a portion of the LP Units held by such holder for
the cash equivalent of an equal number of Common Shares or, at the option of
Brandywine, Brandywine may elect to acquire LP Units presented for redemption
for such cash amount or for an equal number of Common Shares.

         Management Fees and Expenses. Brandywine is not entitled to
compensation for services rendered to the Operating Partnership solely in its
capacity as general partner. The Partnership Agreement provides that Brandywine
shall be reimbursed for (i) all fees and other costs incurred by Brandywine for
legal, accounting and other services provided on behalf of, or for the benefit
of, the Operating Partnership and (ii) all fees, costs and expenses incurred by
Brandywine for employee salaries, as well as for legal, accounting and other
services in connection with the preparation and maintenance of Brandywine's
books and records, financial statements, tax returns and reports to shareholders
and the Securities and Exchange Commission.

         Access to Books and Records. Upon prior notice as provided in the
Partnership Agreement, holders of LP Units have the right, to the extent
provided by Delaware law, to inspect and copy the books and records of the
Operating Partnership during normal business hours.

         Amendments. Except for certain conforming amendments including those to
reflect the issuance or transfer of additional Units, an amendment to the
Partnership Agreement must generally be approved by a majority of the LP Units
then outstanding (including LP Units held by the general partner). An amendment
which would require a limited partner to make additional capital contributions
or restore a negative balance on its capital account or alter such limited
partner's limited liability requires the consent of such limited partner.

         Termination. The Operating Partnership will continue until December 31,
2094, or until sooner dissolved upon (i) the sale of all or substantially all of
the assets of the Operating Partnership, (ii) the withdrawal of the general
partner (unless the limited partners elect to continue the Operating
Partnership), (iii) the acquisition by a single person of all of the Units, (iv)
the entry of a decree of judicial dissolution or (v) the election to dissolve
the Operating Partnership made by the general partner with the consent of the
holders of at least a majority of the LP Units then outstanding.

Item 12.  Indemnification of Directors and Officers

         The information required by this item is hereby incorporated by
reference to the material appearing under Item 15 "Indemnification of Directors
and Officers" in the Registration Statement on Form S-3 filed by Brandywine and
the Operating Partnership with the Securities and Exchange Commission
concurrently with this Form 10.

                                      -18-

<PAGE>

Item 13.  Financial Statements and Supplementary Data

         See "Index to Financial Statements" on page F-1 of this Registration
Statement on Form 10.

Item 14.  Changes in and Disagreements with Accountants on Accounting and
Financial Disclosure

          None.

Item 15.  Financial Statements and Exhibits

         (a)      Financial Statements and Financial Statement Schedules

         See "Index to Financial Statements" on page F-1 of this Registration
Statement on Form 10.

         (b)      Exhibits

(1)3.1.1          Amended and Restated Agreement of Limited Partnership of
                  Brandywine Operating Partnership, L.P. (the "Operating
                  Partnership").
(1)3.1.2          First Amendment to Amended and Restated Agreement of Limited
                  Partnership of the Operating Partnership
(2)3.1.3          Second Amendment to Amended and Restated Agreement of Limited
                  Partnership of the Operating Partnership
(3)3.1.3          Third Amendment to Amended and Restated Agreement of Limited
                  Partnership of the Operating Partnership
(4)10.1           Amended and Restated Credit Agreement
(5)10.2           Second Amendment to Amended and Restated Credit Agreement
(3)10.2           Promissory Note (Additional Credit Facility)
21.1              List of Subsidiaries
27.1              Financial Data Schedule

99.1              The following sections of Brandywine's Annual Report on Form
                  10-K for the fiscal year ended December 31, 1997, which
                  sections are incorporated into this Registration Statement on
                  Form 10 by reference to such report: the descriptions of
                  "Trustees and Executive Officers of the Registrant" in Item
                  10, "Executive Compensation" in Item 11, "Security Ownership
                  of Certain Beneficial Owners and Management" in Item 12, and
                  "Certain Relationships and Related Transactions" in Item 13.

99.2              The following section of the Operating Partnership's and
                  Brandywine's Registration Statement on Form S-3 filed
                  concurrently with this Form 10, which section is incorporated
                  into this Form 10 by reference to such registration statement:
                  the description of "Indemnification of Directors and Officers"
                  in Item 15.
- ----------------------
         (1) Previously filed as an exhibit to Brandywine's Form 8-K dated
December 17, 1997 and incorporated herein by reference.
         (2) Previously filed as an exhibit to Brandywine's Form 8-K dated April
13, 1998 and incorporated herein by reference.
         (3) Previously filed as an exhibit to Brandywine's Form 8-K dated May
14, 1998 and incorporated herein by reference.
         (4) Previously filed as an exhibit to Brandywine's Form 8-K dated
January 8, 1998 and incorporated herein by reference.
         (5) Previously filed as an exhibit to Brandywine's Form 8-K dated March
17, 1998 and incorporated herein by reference.

                                      -19-






<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Partners of Brandywine Operating Partnership, L.P.:

We have audited the accompanying consolidated balance sheets of Brandywine
Operating Partnership, L.P. (the "Operating Partnership") and subsidiaries as of
December 31, 1997 and 1996, and the related consolidated statements of
operations, partners' capital and cash flows for the year ended December 31,
1997 and for the period August 22, 1996 to December 31, 1996. We have also
audited the consolidated statements of operations, shareholders' equity and cash
flows of Brandywine Realty Trust for the period January 1, 1996 to August 21,
1996 and for the year ended December 31, 1995. These consolidated financial
statements and the schedule referred to below are the responsibility of the
Operating Partnership's management. Our responsibility is to express an opinion
on these consolidated financial statements and schedule based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the consolidated financial position of Brandywine
Operating Partnership, L.P. and subsidiaries as of December 31, 1997 and 1996,
and the consolidated results of their operations and their cash flows for the
year ended December 31, 1997 and for the period August 22, 1996 to December 31,
1996, and the consolidated results of operations and cash flows of Brandywine
Realty Trust for the period January 1, 1996 to August 21, 1996 and for the year
ended December 31, 1995 in conformity with generally accepted accounting
principles.

Our audit was made for the purpose of forming an opinion on the basic financial
statements taken as a whole. Schedule III is presented for purposes of complying
with the Securities and Exchange Commission's rules and is not part
of the basic financial statements. This schedule has been subject to the
auditing procedures applied in the audit of the basic financial statements and,
in our opinion, fairly states in all material respects the financial data
required to be set forth therein in relation to the basic financial statements
taken as a whole.
                                                                                
                                            ARTHUR ANDERSEN LLP

Philadelphia, Pennsylvania
June 3, 1998


                                       F-1
<PAGE>


                     BRANDYWINE OPERATING PARTNERSHIP, L.P.
                           CONSOLIDATED BALANCE SHEETS
                     (in thousands, except number of Units)
<TABLE>
<CAPTION>

<S>                                                                          <C>                     <C>                 <C>
                                                                            March 31,            December 31,       December 31,
                                                                              1998                  1997               1996
                                                                           -----------          -------------       -----------
                                                                          (unaudited)
                                     ASSETS
<S>                                                                       <C>                      <C>              <C>     
Real estate investments
   Operating properties                                                    $ 1,075,077               $ 586,414        $ 161,284
   Accumulated depreciation                                                    (29,923)                (22,857)          (9,383)
                                                                           -----------               ---------        ---------
                                                                             1,045,154                 563,557          151,901

Cash and cash equivalents                                                       38,042                  29,442           18,279
Escrowed cash                                                                    1,241                     212            2,044
Accounts receivable                                                              4,877                   3,689            1,366
Due from affiliates                                                                348                     214              517
Investment in management company                                                   109                      74                -
Investment in unconsolidated real estate ventures                                7,276                   5,480                -
Deposits                                                                           100                  12,133                -
Deferred costs and other assets                                                  9,197                   6,680            4,219
                                                                           -----------               ---------        ---------

      Total assets                                                         $ 1,106,344               $ 621,481        $ 178,326
                                                                           ===========               =========        =========


               LIABILITIES AND PARTNERS' EQUITY

Mortgage notes payable                                                        $ 69,170                $ 48,731         $ 36,644
Notes payable, Credit Facility                                                 278,300                 115,233                -
Accrued interest                                                                 1,164                     857              202
Accounts payable and accrued expenses                                            6,875                   2,377            3,119
Distributions payable                                                           14,091                   8,843            2,255
Excess of losses over investment in management company                               -                       -               14
Tenant security deposits and deferred rents                                      8,899                   5,535            1,324
                                                                           -----------               ---------        --------- 

      Total liabilities                                                        378,499                 181,576           43,558
                                                                           -----------               ---------        ---------

Commitments and contingencies                                                                  

Limited partners' capital interest (998,439, 707,426 and 399,567
      Units at redemption value at March 31, 1998, December 31, 1997
      and December 31, 1996, respectively)                                      23,775                  17,774            7,792
                                                                           -----------               ---------        ---------

Partners' Capital
   General partner's capital (37,010,209, 23,923,911 and 8,323,514
      Units at March 31, 1998, December 31, 1997 and December 31,
      1996, respectively)                                                      694,665                 419,064          124,868

   Limited partners' capital (415,791, 163,404, 110,281
       Units at March 31, 1998, December 31, 1997 and December 31,
       1996, respectively)                                                       9,405                   3,067            2,108
                                                                           -----------               ---------        ---------
  
      Total partners' capital                                                  704,070                 422,131          126,976
                                                                           -----------               ---------        ---------

      Total liabilities and partners' capital                              $ 1,106,344               $ 621,481        $ 178,326
                                                                           ===========               =========        =========

</TABLE>

        The accompanying notes are an integral part of these statements.


                                       F-2
<PAGE>

                     BRANDYWINE OPERATING PARTNERSHIP, L.P.
                           AND BRANDYWINE REALTY TRUST
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                   (in thousands, except per unit information)
<TABLE>
<CAPTION>

                                                    
                                                       Brandywine Operating Partnership, L.P.             Brandywine Realty Trust
                                                    -----------------------------------------        -------------------------------
                                                                                             For the       For the
                                                                                             Period        Period
                                                     For the Three Months      For the      August 22,    January 1,      For the
                                                        Ended March 31,       Year Ended     1996 to        1996 to      Year Ended
                                                    ----------------------   December 31,  December 31,    August 21,   December 31,
                                                     1998           1997        1997          1996           1996           1995
                                                    ----------   ---------   ----------    ---------       -------       --------
                                                    unaudited)   (unaudited)
<S>                                                 <C>           <C>         <C>          <C>           <C>          <C>
Revenue:
      Rents                                           $ 28,495     $ 6,999     $ 49,928      $ 5,800        $ 2,662       $ 3,517
      Tenant reimbursements                              3,823       1,327        9,396        1,264            108            66
      Other                                                784         272        1,736          138             58            83
                                                    ---------    ---------   ----------    ---------        -------      --------
           Total revenue                                33,102       8,598       61,060        7,202          2,828         3,666
                                                    ----------   ---------   ----------    ---------        -------      --------

Operating Expenses:
      Interest                                           4,387         975        7,079        2,086            665           793
      Depreciation and amortization                      7,713       2,310       15,589        2,192            644         1,402
      Property operating expenses                       10,137       2,810       20,144        2,198          1,205         1,561
      Management fees                                    1,331         315        2,301          261             45            47
      Administrative expenses                              636         169          659          465            360           687
                                                    ----------   ---------   ----------    ---------        -------       -------
           Total operating expenses                     24,204       6,579       45,772        7,202          2,919         4,490
                                                    ----------   ---------   ----------    ---------        -------       -------
Income (loss) before equity in income of management
     company and extraordinary item                      8,898       2,019       15,288            -            (91)         (824)
Equity in income (loss) of management company               35         125           89          (26)             -          -
                                                    ----------   ---------   ----------    ---------        -------       -------
Net income (loss) before extraordinary item              8,933       2,144       15,377          (26)           (91)         (824)
Extraordinary item                                        (858)          -            -            -              -             -
                                                    ----------   ---------   ----------    ---------        -------       -------
Net income (loss)                                      $ 8,075     $ 2,144     $ 15,377        $ (26)         $ (91)      $  (824)
                                                    ==========   =========   ==========    =========        =======       =======

Earnings per Unit/Common Share:
      Before extraordinary item
           Basic                                        $ 0.28      $ 0.22       $ 0.96      $ (0.01)       $ (0.15)      $ (1.33)
                                                    ==========   =========   ==========    =========       ========       =======
           Diluted                                      $ 0.28      $ 0.22       $ 0.95      $ (0.01)       $ (0.14)      $ (1.33)
                                                    ==========   =========   ==========    =========        =======       =======
      After extraordinary item
           Basic                                        $ 0.25      $ 0.22       $ 0.96      $ (0.01)       $ (0.15)      $ (1.33)
                                                    ==========   =========   ==========    =========        =======       =======
           Diluted                                      $ 0.25      $ 0.22       $ 0.95      $ (0.01)       $ (0.14)      $ (1.33)
                                                    ==========   =========    ==========   =========       ========      ========

Weighted average number of Units/Common Shares
outstanding:
           Basic                                    32,011,173   9,732,560   16,098,145    3,629,575        623,965       618,733
                                                    ----------  ----------   ----------    ---------        -------       -------
           Diluted                                  32,144,526   9,784,451   16,175,258    3,644,543        635,578       618,733
                                                    ----------   ---------   ----------    ---------        -------       -------


</TABLE>

        The accompanying notes are an integral part of these statements.

                                       F-3
<PAGE>



       BRANDYWINE OPERATING PARTNERSHIP, L.P. AND BRANDYWINE REALTY TRUST
      CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL AND SHAREHOLDERS' EQUITY
   FOR THE YEARS ENDED DECEMBER 31, 1997 AND 1995, THE PERIOD JANUARY 1, 1996
 TO AUGUST 21, 1996, THE PERIOD AUGUST 22, 1996 TO DECEMBER 31, 1996
             AND THE THREE MONTHS ENDED MARCH 31, 1998 (unaudited)
                                 (in thousands)

<TABLE>
<CAPTION>


                                                                    Brandywine Realty Trust's
                                                                       Ownership Interests
                                                                ----------------------------------
                                                                        General       Limited      Total          Limited
                                                                        Partner       Partner      Partners'      Partners'
                                                                         Capital      Capital       Capital    Capital Interest
                                                                       ---------      -------      ---------   ----------------

BRANDYWINE REALTY TRUST

<S>                                                                     <C>          <C>           <C>           <C>     
Shareholders' equity at January 1, 1995                                  $ 9,189      $     -       $  9,189      $      -
      Distributions ($1.65 per share)                                     (1,021)           -         (1,021)            -
      Net loss                                                              (824)           -           (824)            -
                                                                       ---------      -------      ---------      --------
Shareholders' equity at December 31, 1995                                  7,344            -          7,344             -
                                                                       ---------      -------  --------------     --------
      Issuance of Common Shares and warrants                                 337            -            337             -
      Distributions ($0.36 per share)                                       (226)           -           (226)            -
      Net loss                                                               (91)           -            (91)            -
                                                                       ---------      -------      ---------      --------
Shareholders' equity August 21, 1996                                     $ 7,364      $     -        $ 7,364           $ -
                                                                       =========      =======      =========      ========

BRANDYWINE OPERATING PARTNERSHIP, L.P.

Partners' capital at August 22, 1996 (inception)                         $ 7,364         $  -        $ 7,364           $ -
      Issuance of Common and Preferred Shares and warrants               121,246            -        121,246             -
      Issuance of Units                                                        -            -              -         8,768
      Redemption of Units                                                      -        2,150          2,150        (2,288)
      Distributions ($0.46 per Unit)                                      (2,296)         (23)        (2,319)         (127)
      Net income (loss)                                                      (70)          (1)           (71)           45
      Adjustment to reflect limited partners' redeemable
        capital at redemption value at balance sheet date                 (1,376)         (18)        (1,394)        1,394
                                                                       ---------      -------      ---------      --------
Partners' capital at December 31, 1996                                   124,868        2,108        126,976         7,792
                                                                       ---------      -------      ---------      --------
      Issuance of Common Shares and warrants                             305,664            -        305,664             -
      Issuance of Units                                                        -            -              -         9,508
      Redemption of Units                                                      -        1,069          1,069        (1,374)
      Distributions ($1.44 per Unit)                                     (24,330)        (246)       (24,576)         (531)
      Net income                                                          14,851          150         15,001           376
      Adjustment to reflect limited partners' redeemable
        capital at redemption value at balance sheet date                 (1,989)         (14)        (2,003)        2,003
                                                                       ---------      -------      ---------      --------
Partners' capital at December 31, 1997                                   419,064        3,067        422,131        17,774
                                                                       ---------      -------      ---------      --------
      Issuance of Common Shares and warrants (unaudited)                 287,679            -        287,679             -
      Issuance of Units (unaudited)                                            -            -              -         3,612
      Redemption of Units (unaudited)                                          -        6,467          6,467        (3,877)
      Distributions ($0.37 per Unit) (unaudited)                         (13,710)        (138)       (13,848)         (168)
      Net income (unaudited)                                               7,866           79          7,945           130
      Adjustment to reflect limited partners' redeemable
        capital at redemption value at balance sheet date (unaudited)     (6,234)          (70)        (6,304)        6,304
                                                                       ---------     --------      ---------      --------
Partners' capital at March 31, 1998 (unaudited)                        $ 694,665      $ 9,405      $ 704,070      $ 23,775
                                                                       =========      =======      =========      ========


</TABLE>


        The accompanying notes are an integral part of these statements.



                                       F-4
<PAGE>

       BRANDYWINE OPERATING PARTNERSHIP, L.P. AND BRANDYWINE REALTY TRUST
                      CONSOLIDATED STATEMENTS OF CASH FLOW
  FOR THE YEARS ENDED DECEMBER 31, 1997 AND 1995, THE PERIOD JANUARY 1, 1996 TO
        AUGUST 21, 1996, THE PERIOD AUGUST 22, 1996 TO DECEMBER 31, 1996,
   AND THE THREE MONTHS ENDED MARCH 31, 1998 (unaudited) and 1997 (unaudited)
                                 (in thousands)
<TABLE>
<CAPTION>

                                                                            Brandywine Operating             Brandywine
                                                                              Partnership, L.P.                Realty Trust
                                                                  -------------------------------------   ----------------------
                                                                                                For the     For the                 
                                                                                                Period       Period                 
                                                         For the Three Months       For the     August 22,  January 1,     Year     
                                                            Ended March 31,        Year Ended    1996 to     1996  to     Ended     
                                                         ---------------------    December 31, December 31, August 21,  December 31,
                                                           1998          1997        1997         1996        1996          1995
                                                         ---------   ---------     ---------   ---------    --------     -------  
                                                       (unaudited)   (unaudited)                                       
 <S>                                                       <C>             <C>        <C>         <C>        <C>           <C> 
Cash flows from operating activities:                                                                                  
Net income                                              $  8,075     $  2,144     $ 15,377     $    (26)    $ (91)      $ (824)  
Adjustments to reconcile net income to net                                                                              
   cash provided by operating activities:                                                                               
   Depreciation and amortization                           7,713        2,310       15,589        2,192       644        1,402
   Equity in (income) loss of management                                                                                
     company                                                 (35)        (125)         (89)          26         -            -
   Amortization of deferred compensation                     372            -            -            -         -            -
   Amortization of discounted notes payable                   67            -          334           26         6       
   Extraordinary item - write off of deferred                                                                           
     financing costs                                         858            -            -            -         -            -
   Changes in assets and liabilities:                                                                                   
      Accounts receivable                                 (1,188)        (709)      (2,323)         (86)     (407)        (54)
      Affiliate receivable                                  (134)          38          303         (517)        -            -
      Other assets                                        (1,057)        (103)      (1,303)        (271)      226          18
      Accounts payable and accrued expenses                3,066          938          818          783       (57)        (50)
      Accrued mortgage interest                              367           55          655         (191)       54          24
      Other liabilities                                    3,364          545        4,211          171        86         (19)
                                                        --------     --------     --------     --------     -----        -----
   Net cash provided by operating activites               21,468        5,093       33,572        2,107       461         497
                                                        --------     --------     --------     --------     -----        -----
Cash flows from investing activities:                                                                                   
Purchase of properties                                  (445,035)     (58,143)    (406,871)     (23,732)  (10,186)           -
Investment in real estate ventures                        (1,796)           -       (5,480)           -         -            -
Decrease (increase) in escrowed cash                      (1,029)         432        1,832          393       207         (41)
Capital expenditures and leasing                                                                                        
   commissions paid                                       (4,762)      (2,292)      (7,737)      (1,495)     (588)       (660)
                                                        --------     --------     --------     --------     -----        -----
   Net cash used in investing activities                (452,622)     (60,003)    (418,256)     (24,834)  (10,567        (701)
                                                        --------     --------     --------     --------     -----        -----
Cash flows from financing activites:                                                                                    
Proceeds from issuance of units /                                                                                       
   shares, net                                           287,462       45,534      305,055       90,960       337            -
Distributions paid to general                                                                                           
   partner / shareholders                                 (8,634)      (2,127)     (18,069)        (191)     (319)(     2,227)
Distributions paid to limited                                                                                           
   partners / minority partners                             (134)         (54)        (448)          (9)        -          (5)
Proceeds from note payable to related party                    -            -            -          387     1,005           -
Proceeds from mortgage notes payable                           -       21,682          388        1,322     8,574       9,000
Repayment of mortgage notes payable                         (646)      (9,578)      (4,485)     (50,703)     (170)(     6,968)
Proceeds from notes payable, Credit Facility             570,867            -      293,208            -         -            -
Repayment of notes payable, Credit Facility             (407,800)           -     (177,975)           -         -            -
Purchase of limited partnership units                          -            -         (531)           -         -            -
Other debt costs                                          (1,361)        (428)      (1,296)        (921)        -        (522)
                                                        --------     --------     --------     --------     -----        -----
   Net cash provided by (used in)                                                                                       
     financing activities                                439,754       55,029      395,847       40,845     9,427        (722)
                                                        --------     --------     --------     --------     -----        -----
Increase (decrease) in cash and cash equivalents           8,600          119       11,163       18,118      (679)       (926)
Cash and cash equivalents at beginning of period          29,442       18,279       18,279          161       840       1,766
                                                        --------     --------     --------     --------     -----        -----  
Cash and cash equivalents at end of period              $ 38,042     $ 18,398     $ 29,442     $ 18,279     $ 161        $840
                                                        ========     ========     ========     ========     =====        =====
                                                                                                                       
</TABLE>
             The accompanying notes are an integral part of these statements.


                                       F-5
<PAGE>

       BRANDYWINE OPERATING PARTNERSHIP, L.P. AND BRANDYWINE REALTY TRUST
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


1.  ORGANIZATION AND NATURE OF OPERATIONS:
    --------------------------------------

Brandywine Operating Partnership, L.P. (the "Operating Partnership") is a
Delaware limited partnership active in acquiring, developing, redeveloping,
leasing and managing office and industrial properties. The Operating Partnership
is the entity through which Brandywine Realty Trust ("Brandywine," and
collectively with its subsidiaries, the "Company"), a self-administered and
self-managed Maryland real estate investment trust (a "REIT"), conducts
substantially all of its business. Brandywine commenced its operations in 1986
and since August 22, 1996 has owned substantially all of its assets and
conducted its operations through the Operating Partnership. As of June 1, 1998,
Brandywine's ownership interest in the Operating Partnership was approximately
97.4%.

Brandywine controls the Operating Partnership as its sole general partner (this
structure is commonly referred to as an umbrella partnership REIT or "UPREIT").
The Board of Trustees of Brandywine manages the affairs of the Operating
Partnership. Brandywine's general and limited partner interests in the Operating
Partnership entitle it to share in cash distributions from, and in the profits
and losses of, the Operating Partnership in proportion to its ownership interest
therein and Brandywine's limited partner interests entitle Brandywine to vote on
all matters requiring a vote of the limited partners.

The other limited partners of the Operating Partnership are persons who
contributed their direct or indirect interests in certain properties to the
Operating Partnership. The Operating Partnership is obligated to redeem each
unit of partnership interest ("Unit") held by a person other than Brandywine, at
the request of the holder thereof and subject to certain time restrictions, for
cash equal to the fair market value of a share of Brandywine's common shares of
beneficial interest ("Common Shares"), par value $.01 per share, at the time of
such redemption, provided that Brandywine, at its option, may elect to acquire
any such Unit presented for redemption for one Common Share or cash. Brandywine
presently anticipates that it will elect to issue its Common Shares to acquire
Units presented for redemption, rather than paying cash. Such limited partners'
redemption rights are reflected in "limited partners' capital interest" in the
accompanying consolidated balance sheets at the cash redemption amount at the
balance sheet date. With each such redemption Brandywine's percentage ownership
interest in the Operating Partnership will increase. In addition, whenever
Brandywine issues Common Shares or preferred shares of beneficial interest
("Preferred Shares"), par value $.01 per share, Brandywine may contribute any
net proceeds therefrom to the Operating Partnership and the Operating
Partnership is obligated to issue an equivalent number of Units to Brandywine.

Distributions to holders of Units are made to enable distributions to be made to
Brandywine's shareholders under its dividend policy. Federal income tax laws
require Brandywine, as a REIT, to distribute 95% of its ordinary taxable income.
The Operating Partnership makes distributions to Brandywine to enable it to
satisfy this requirement.

As of December 31, 1997, the Operating Partnership's portfolio included 95
office properties and 22 industrial facilities (the "Properties") that contained
an aggregate of approximately 7.1 million net rentable square feet. As of
December 31, 1997, the Properties (excluding two Properties under development or
redevelopment) were approximately 91.2% leased to 688 tenants and had an average
age of approximately 14 years. Approximately 96% of the Operating Partnership's
portfolio based on net rentable square feet (113 of the 117 Properties) was
located in the Suburban Philadelphia Office and Industrial Market. "Suburban
Philadelphia Office and Industrial Market" or "Market" means the areas comprised
of the following counties: Berks, Bucks, Chester, Delaware, Lehigh, Montgomery
and Northampton in Pennsylvania and Burlington and Camden in New Jersey.

                                      F-6
<PAGE>


The Operating Partnership holds a 95% economic interest in Brandywine Realty
Services Corporation (the "Management Company") through its ownership of 100% of
the Management Company's non-voting preferred stock and 5% of its voting common
stock. As of December 31, 1997, the Management Company was responsible for
managing and leasing 115 of the Operating Partnership's Properties and other
properties on behalf of third parties.

A majority of the Properties are located within the Suburban Philadelphia Office
and Industrial Market. As such, a downturn in business activity in this market
could negatively impact the Company. Management believes the Market provides a
well-diversified economic base which helps to insulate the region from the types
of market vicissitudes that can adversely affect a single-sector economy.


2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
     -------------------------------------------

Principles of Consolidation
- ---------------------------

The accompanying financial statements of the Operating Partnership have been
prepared on a consolidated basis and include all the accounts of the Operating
Partnership and its subsidiaries. All significant intercompany accounts and
transactions have been eliminated in consolidation. The accompanying financial
statements of Brandywine have also been presented on a consolidated basis.

Use of Estimates in the Preparation of Financial Statements
- -----------------------------------------------------------

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.

Capitalization of Costs
- -----------------------

The Operating Partnership has capitalized as deferred costs certain expenditures
related to the financing and leasing of the Properties. Capitalized loan fees
are being amortized over the terms of the related loans and leasing commissions
are being amortized over the term of the related leases. Deferred costs and
other assets are presented net of accumulated amortization totaling $1,994,000
and $729,000 as of December 31, 1997 and 1996, respectively.

Real estate investments
- -----------------------

Real estate investments are carried at cost, less accumulated depreciation. It
is the policy of the Operating Partnership and Brandywine to review the carrying
value of long-lived assets for impairment whenever events or changes in
circumstances indicate that the carrying value of such assets may not be
recoverable. Measurement of the impairment loss is based on fair value of the
asset. Generally, fair value will be determined using valuation techniques such
as the present value of expected future cash flows. No impairment adjustments
have been made as a result of this review process by the Operating Partnership
or Brandywine during any of the periods presented.

Depreciation and Amortization
- -----------------------------

Depreciation is computed using the straight-line method. Estimated useful lives
range from 25 to 35 years for buildings and improvements and five years for
personal property. Amortization of tenant improvements is provided over the
shorter of the lease term or the life of the assets.

                                      F-7
<PAGE>

Investment in Management Company
- --------------------------------

Investment in the Management Company is accounted for using the equity method.
See Note 4 for further discussion.

Investment in Unconsolidated Real Estate Ventures

The Operating Partnership accounts for its non-controlling interests in office
development joint ventures using the equity method. Non-controlling ownership
interests range from 35% - 65%. These investments are recorded initially at the
Operating Partnership's cost and subsequently adjusted for the Operating
Partnership's net equity in income and cash contributions and distributions.

Federal Income Taxes
- --------------------

The Operating Partnership is taxed as a partnership under the provisions of the
Internal Revenue Code. As a result, the Operating Partnership is not subject to
federal income taxes, and the taxable income of the Operating Partnership has
been included in the individual tax returns of the Operating Partnership's
partners. Accordingly, no provision for federal or state income taxes has been
recorded in the accompanying financial statements.

The Management Company is subject to Federal and state income taxes. The
operating results of the Management Company include a provision for income
taxes.

Revenue Recognition
- -------------------

Rental revenue from tenants is recognized on a straight-line basis over the term
of the lease agreements regardless of when payments are due and accrued rents
are included in accounts receivable on the balance sheets. Certain lease
agreements contain provisions which provide for reimbursement of the tenants'
share of real estate taxes and certain common area maintenance costs. These
reimbursements are reflected on the accrual basis.

No tenant represented 10% or more of the Operating Partnership's or Brandywine's
rental revenue in 1997 or 1996. During 1995, two tenants each individually
represented approximately 10% of Brandywine's total rental revenue.

Fair Value of Financial Instruments
- -----------------------------------

The carrying amounts reported in the balance sheet for cash, accrued
liabilities, and short-term borrowings approximate their fair values due to the
short-term nature of these instruments. Accordingly, these items have been
excluded from the fair value disclosures included elsewhere in these notes.

Statements of Cash Flows
- ------------------------

For purposes of reporting cash flows, cash and cash equivalents include cash on
hand and short-term investments with original maturities of 90 days or less. At
December 31, 1997, 1996 and 1995, cash and cash equivalents totaling
$29,442,000, $18,279,000 and $840,000, respectively, included tenant escrow
deposits of $2,739,000, $789,000 and $198,000, respectively.

Interim Unaudited Financial Statements
- --------------------------------------

Certain of the financial statements included herein have been prepared by the
Operating Partnership without audit, pursuant to the rules and regulations of
the Securities and Exchange Commission. Certain information and footnote
disclosures normally included in the financial statements prepared in accordance
with generally accepted accounting principles have been condensed or omitted

                                      F-8
<PAGE>

pursuant to such rules and regulations, although Management believes that the
included disclosures are adequate to make the information presented not
misleading. In the opinion of Management, all adjustments (consisting solely of
normal recurring matters) necessary to fairly present the financial position of
the Operating Partnership as of March 31, 1998, and the results of its
operations and its cash flows for the three month periods ended March 31, 1998
and 1997 have been included. The results of operations for such interim periods
are not necessarily indicative of the results for a full year.


3. ACQUISITIONS OF REAL ESTATE INVESTMENTS:
   ----------------------------------------

1998
- ----
Subsequent to December 31, 1997 and through March 31, 1998, the Operating
Partnership purchased 50 Properties (44 office properties and 6 industrial
facilities) which contain an aggregate of approximately 4.3 million net rentable
square feet. The purchase price for the 50 Properties was approximately $492.6
million.

Subsequent to March 31, 1998 and through June 1, 1998, the Operating Partnership
purchased 12 office Properties which contain an aggregate of approximately
733,000 net rentable square feet. The purchase price for the 12 Properties was
approximately $90.1 million.

The following unaudited pro forma financial information of the Operating
Partnership for the three months ended March 31, 1998 and 1997 gives effect to
the properties acquired and the Unit issuances during 1998 and 1997 as if the
purchases and issuances had occurred on January 1, 1998 and 1997, respectively.



                                        Three Months Ended December 31,
                              --------------------------------------------------
                                             1998           1997
                                         ------------   ------------
                              (Unaudited and in thousands, except per Unit data)

Pro forma total revenues                    $48,129        $44,529
Pro forma net income before 
  extraordinary items                       $15,545        $11,810
Diluted pro forma net income per
  Unit before extraordiarny items             $0.41          $0.31


1997
- ----
During 1997, the Operating Partnership acquired 80 properties (61 office
properties and 19 industrial facilities) which contained an aggregate of
approximately 5.1 million net rentable square feet. The aggregate purchase price
for the 1997 property acquisitions was $403.7 million, consisting of $378.3
million of cash, $15.9 million of debt assumed and $9.5 million in Units.

The following unaudited pro forma financial information of the Operating
Partnership for the years ended December 31, 1997 and 1996 gives effect to the
properties acquired and the Unit issuances during 1997 and 1996 as if the
purchases had occurred on January 1, 1997 and 1996, respectively.

                                           Year Ended December 31,
                              --------------------------------------------------
                                             1997           1996
                                         ------------   ------------
                              (Unaudited and in thousands, except per Unit data)

Pro forma total revenues                   $ 94,856       $ 86,309
Pro forma net income                       $ 25,117       $ 18,227
Pro forma net income per Unit              $   1.01       $   0.75

                                      F-9
<PAGE>


1996
The Operating Partnership acquired 33 properties in 1996 (30 office properties
and 3 industrial facilities) which contain an aggregate of approximately 1.7
million net rentable square feet. The purchase price for the 1996 property
acquisitions was $139.7 million.

The following unaudited pro forma financial information of the Operating
Partnership for the years ended December 31, 1996 and 1995 gives effect to the
properties acquired and the Unit issuances during 1996 as if the purchases had
occurred on January 1, 1996 and 1995, respectively.



                                           Year Ended December 31,
                              --------------------------------------------------
                                             1996           1995
                                         ------------   ------------
                              (Unaudited and in thousands, except per Unit data)
Pro forma total revenues                   $ 25,614       $ 22,845
Pro forma net income                       $  3,190       $  1,198
Pro forma net income 
  per Unit                                 $   0.37       $   0.14


All acquisitions described above were accounted for by the purchase method. The
results of operations for each of the acquired properties have been included
from the respective purchase dates. All pro forma financial information
presented within this footnote is unaudited and is not necessarily indicative of
the results which actually would have occurred if acquisitions had been
consummated on the respective dates indicated, nor does the pro forma
information purport to represent the results of operations for future periods.


4.  MANAGEMENT COMPANY
    ------------------

On August 22, 1996, the Management Company commenced operations and is
responsible for various activities including: management, leasing, construction,
redevelopment and development of the Operating Partnership's Properties and
properties on behalf of third parties as well as providing other real estate
related services for third parties. Total management fees paid by the Operating
Partnership's Properties to the Management Company are included in management
fee expense in the accompanying statements of operations and amounted to
$2,263,000 during 1997 and $263,000 for the period from August 22, 1996 to
December 31, 1996. The Management Company also receives payments of certain
costs attributable to the operation of the Properties. Such reimbursements are
included in property operating expenses in the accompanying statements of
operations and amounted to $1.9 million during 1997 and $147,000 for the period
from August 22, 1996 to December 31, 1996. Summarized unaudited financial
information for the Management Company as of December 31, 1997 and 1996, for the
year ended December 31, 1997 and for the period from August 22, 1996 to December
31, 1996 is as follows:


                                                     Period Ended December 31,
                                                    ----------------------------
                                                        1997            1996
                                                    ------------    ------------
                                                    (Unaudited and in thousands)

Total assets                                            $   924         $ 345
Total revenue                                           $ 5,077         $ 301
Net income (loss)                                       $    93         $ (42)
Operating Partnership's  share of net income (loss)     $    89         $ (26)

                                      F-10
<PAGE>


5.  INDEBTEDNESS

    ------------
Notes Payable Credit Facility - The Operating Partnership utilizes credit
facility borrowings for general business purposes, including the acquisition of
office and industrial properties and the repayment of certain outstanding debt.
On July 15, 1997, the Operating Partnership's increased the availability for
borrowing under its revolving credit facility (the "1997 Credit Facility") from
$80.0 million to $150.0 million. At year end, $34.8 million remained available
for borrowing under this facility. The 1997 Credit Facility was secured by 39 of
the Properties and bore interest at a per annum floating rate equal to the
Operating Partnership's choice of 30, 60 or 90-day LIBOR, plus 175 basis points.
The weighted average interest rate during 1997 for borrowings under the 1997
Credit Facility was 7.4%. No amounts were borrowed under the facility in 1996.

During the first quarter of 1998, the Operating Partnership replaced the 1997
Credit Facility with a $330 million unsecured revolving credit facility (the
"1998 Credit Facility"). The new facility enables the Operating Partnership to
borrow funds at a reduced interest rate equal to the 30, 60, 90 or 180-day
LIBOR, plus, in each case, a range of 100 to 137.5 basis points, depending on
the Operating Partnership's then existing leverage and debt rating.
Alternatively, the Operating Partnership can borrow funds at a base rate equal
to the higher of (i) the Prime Rate or (ii) the Fed Funds Rate plus 50 basis
points. The 1998 Credit Facility matures on January 5, 2001 and is extendible,
under certain circumstances, at the Operating Partnership's option to January 5,
2002.

The 1998 Credit Facility requires the Operating Partnership to maintain ongoing
compliance with a number of customary financial and other covenants, including
leverage ratios based on gross implied asset value and debt service coverage
ratios, limitations on liens and distributions and a minimum net worth
requirement.

On May 7, 1998 the Operating Partnership entered into an unsecured credit
facility (the "Additional Facility") with NationsBank, N.A. permitting advances
of up to $150 million, subject to certain conditions. The Additional Facility
matures on November 7, 1998, subject to a two-month extension under certain
circumstances, and allows the Operating Partnership to borrow funds at an
interest rate equal to LIBOR plus 150 basis points or, at the Operating
Partnership's option, the Prime Rate plus 25 basis points. Amounts repaid by the
Operating Partnership under the Additional Facility are not subject to
reborrowing. The Additional Credit Facility incorporates the covenants contained
in the 1998 Credit Facility.

Mortgage Notes Payable - Mortgage loans encumbered 20 and 18 of the Properties
as of December 31, 1997 and 1996, respectively. Additionally, as of December 31,
1997, mortgage loans encumbered certain of the Operating Partnership's land
holdings. Interest rates on the mortgage loans ranged from 5.0% to 9.9% and the
mortgage loans had weighted average interest rates of 8.3%, 8.4% and 9.2% during
1997, 1996 and 1995, respectively.

Included in mortgage notes payable are non-interest bearing loans which have an
imputed 8% interest rate. On December 31, 1997, these loans totaled $3.8 million
with unamortized discounts of $254,000. On December 31, 1996, non-interest
bearing loans totaled $4.8 million with unamortized discounts of $587,000.
Amortization of the discounts aggregated $333,000, $49,000 and $14,000 during
the year ended 1997, the period August 22, 1996 to December 31, 1996 and the
period January 1, 1996 to August 21, 1996, respectively.

                                      F-11
<PAGE>


Aggregate principal payments on mortgage notes payable at December 31, 1997 are
due as follows:
                   


             1998                   $ 13,092,000
             1999                     12,823,000
             2000                      3,883,000
             2001                      1,021,000
             2002                     13,835,000
      2003 and thereafter              4,077,000
                                    ------------
                                    $ 48,731,000
                                    ============


As of December 31, 1997, the Operating Partnership was in compliance with all
debt covenants. During the years ended December 31, 1997, 1996 and 1995,
interest paid totaled $6,071,000, $2,827,000 and $784,000, respectively. As of
December 31, 1997, 59 of the 117 Properties were mortgaged or subject to liens
under the secured Credit Facility and mortgage notes payable and had an
aggregate net book value of $308.1 million. As of December 31, 1997, the fair
values of mortgage notes payable and notes payable under the Credit Facility
approximate carrying costs.

As of December 31, 1997, the Operating Partnership had entered into guaranties,
and agreements contemplating the provision of guaranties, for the benefit of
unconsolidated real estate ventures, aggregating approximately $33.3 million.
Payment under these guaranties would constitute loan obligations of, or
preferred equity positions in, the applicable unconsolidated real estate
venture.


6.  ISSUANCE OF UNITS:
    ------------------

The agreement of limited partnership of the Operating Partnership provides that
if Brandywine contributes the net proceeds of a Common Share offering to the
Operating Partnership, the Operating Partnership will issue to Brandywine a
number of Units equal to the number of Common Shares issued. Since the inception
of the Operating Partnership, Brandywine has contributed, and expects to
continue to contribute, all of the net proceeds received upon Common Share
offerings to the Operating Partnership.

1998
- ----
During the three months ended March 31, 1998, the Operating Partnership issued
13,086,298 Units to Brandywine in exchange for the net proceeds from the
issuance of 13,086,298 Common Shares to the public. In addition, the Operating
Partnership issued 543,400 Units as part of the purchase price for certain
property acquisitions.

1997
- ----
During 1997, the Operating Partnership issued 15,413,609 Units to Brandywine in
exchange for the net proceeds from the issuance of 15,413,609 Common Shares to
the public. In addition, the Operating Partnership issued 576,764 Units as part
of the purchase price for certain property acquisitions. During 1997, the
Operating Partnership paid cash to satisfy obligations of certain limited
partners in exchange for 28,994 Units.

1996
- ----
For the period August 22, 1996 through December 31, 1996, the Operating
Partnership issued 7,551,514 Units to Brandywine in exchange for the net
proceeds from the issuance of 5,945,454 Common Shares and 1,606,060 Preferred
Shares to the public and through private placements. In addition, the Operating
Partnership issued 1,281,848 Units as part of the purchase price for certain
property acquisitions.

The Company had reserved, as of December 31, 1997, 762,105 Common Shares for
issuance upon the exercise of share options and warrants described above. At
December 31, 1997, all options and warrants outstanding were exercisable and
were granted with an exercise price equal to the fair market value on the date
of grant. Outstanding options and warrants have a weighted average remaining
contractual life of 4.0 years, an average exercise price of $20.09 per share and
an aggregate purchase price of $15,311,000. During 1997 and 1996, there were no
options or warrants exercised or canceled and no options or warrants expired.


                                      F-12
<PAGE>

During 1996, the Operating Partnership adopted a stock-based compensation
accounting standard, "Accounting for Stock-Based Compensation" ("SFAS No. 123").
SFAS No. 123 encourages a fair value method of accounting for employee stock
options and similar equity instruments. The statement also allows an entity to
account for stock-based compensation using the intrinsic value based method in
APB Opinion No. 25. As provided for in the statement, the Operating Partnership
elected to utilize the intrinsic value method of expense recognition. If
compensation cost for the warrants and options granted to executive officers and
employees of the Company during 1996 had been determined using the fair value
method prescribed by SFAS No. 123, the Operating Partnership's net earnings and
earnings per Unit would have been the pro forma amounts indicated below:
  
                                       Year ended December 31,
                                   --------------------------------
                                         1997              1996
                                   --------------    --------------
                              (unaudited and in thousands, except per unit data)
Net income (loss):
     As reported                     $ 15,377           $  (117)
     Pro forma                         15,078              (448)
Earnings (loss) per unit:
     As reported
        Basic                        $   0.96           $ (0.07)
        Diluted                      $   0.95           $ (0.07)
     Pro forma
        Basic                        $   0.94           $ (0.26)
        Diluted                      $   0.93           $ (0.26)




The pro forma effect on results may not be representative of the impact in
future years because the fair value method was not applied to options granted
before 1995.

The weighted average fair value of each warrant issued in 1996 was $1.38 for
warrants issued to the executive officers and $1.13 for warrants issued to
Company employees. Fair value was estimated on the grant date using the
Black-Scholes option pricing model with the following assumptions:

                               Executive        Company
                               officers        employees
                             ------------     -----------
Expected life in years             5                3
Risk-free interest rate          6.0%             6.0%
Volatility                      17.5%            17.5%
Dividend yield                   7.0%             7.0%


On January 2, 1998, the Company awarded an aggregate of 443,557 "restricted"
Common Shares to six of the Company's executives. These restricted shares vest
over five to eight year periods and were valued at approximately $11.2 million
(based on the closing price of Common Shares on January 2, 1998). Also on
January 2, 1998, the Company awarded certain of its employees options
exercisable for an aggregate 2,043,704 Common Shares. These options vest over
two to five years and have exercise prices ranging from $25.25 to $29.04.

                                      F-13
<PAGE>


7.  EARNINGS PER UNIT:
    ------------------

In February 1997, the Financial Accounting Standards Board issued Statement No.
128, "Earnings per Share" ("SFAS 128"). SFAS 128 establishes standards for
computing and presenting earnings per share. Basic earnings per Unit are based
on the weighted average number of Units outstanding during the year. Diluted
earnings per Unit are based on the weighted average number of Units outstanding
during the year adjusted to give effect to Unit equivalents. All per Unit
amounts for all periods presented have been presented in conformity SFAS 128. A
reconciliation between basic and diluted average Units outstanding is shown
below.
<TABLE>
<CAPTION>
                                                                  Brandywine Operating Partnership, L.P.                 
                                              -------------------------------------------------------------------------
                                                                                     
                                                    For the Three Months              For the           For the Period   
                                                      Ended March 31,               Year Ended         August 22, 1996   
                                              ---------------------------------    December 31,        to December 31, 
                                                   1998              1997              1997                  1996        
                                              ----------------  ---------------  ------------------  ------------------
                                                (unaudited)      (unaudited)
<S>                                                <C>               <C>                <C>                <C>      
Average Units outstanding - basic                  32,011,173        9,732,560          16,098,145         3,629,575
Incremental Units from assumed 
   conversions of share options                       133,353           51,891              77,113            14,968
                                                  -----------      -----------         -----------       -----------
Average Units outstanding - diluted                32,144,526        9,784,451          16,175,258         3,644,543
                                                  ===========      ===========         ===========       ===========
</TABLE>
(RESTUBBED TABLE)
<TABLE>
<CAPTION>
                                                      Brandywine Realty Trust
                                             --------------------------------------
                                                For the Period           For the
                                               January 1, 1996         Year Ended
                                                to August 21,         December 31,
                                                     1996                 1995
                                              -------------------   ---------------
<S>                                                <C>                  <C>    
Average Units outstanding - basic                  623,965              618,733
Incremental Units from assumed
   conversions of share options                     11,613                6,057
                                               -----------          -----------
Average Units outstanding - diluted                635,578              624,790
                                               ===========          ===========
</TABLE>
<PAGE>

8. RELATED-PARTY TRANSACTIONS:
   ---------------------------

During 1996, the Operating Partnership consummated a transaction (the "SSI/TNC
Transaction") in which the Operating Partnership acquired substantially all of
the real estate holdings of Safeguard Scientifics, Inc. ("SSI") and SSI's real
estate affiliate, The Nichols Company ("TNC"), then a private real estate
development and management services company. The then President of TNC, Anthony
A. Nichols, Sr. and the Chairman and Chief Executive Officer of SSI, Warren V.
Musser, became members of Brandywine's Board of Trustees.

Approximately 21,580 net rentable square feet of office space is leased by the
Operating Partnership to an affiliate of SSI at an average rental rate of $9.66
per square foot under a lease that expires in April 1999.

In March 1997, the Operating Partnership acquired a parcel of undeveloped land
from Horsham Valley, Inc., an entity in which Mr. Nichols, Sr., Chairman of the
Board of Brandywine, holds an approximate 25% interest. The purchase price of
approximately $1.0 million was determined through arm's-length negotiation
between the Operating Partnership and the seller.

In August 1997, the Operating Partnership satisfied obligations of TNC (a
company controlled by Mr. Nichols, Sr.) on account of brokerage commissions and
tenant improvements. In exchange, TNC forfeited 28,944 Units.

Walter D'Alessio, a member of Brandywine's Board of Trustees, is President and
Chief Executive Officer of a subsidiary of Legg Mason Wood Walker Incorporated,
which performed investment banking services and other financial advisory
services for the Company during 1997 and 1996.

Mr. D'Alessio is a director of PECO Energy Company. In December 1997, the
Operating Partnership acquired an office property from PECO Energy Company for a
purchase price of $9.5 million. Mr. D'Alessio was not a participant in the
committee which made the decision to purchase the property and negotiated the
related terms of the transaction.

                                      F-14
<PAGE>


9.   OPERATING LEASES:
     -----------------

The Operating Partnership leases its properties to tenants under operating
leases with various expiration dates extending to the year 2012. At December 31,
1997, leases covering approximately 1.0 million square feet or 14% of the net
leasable space at the Properties were scheduled to expire during 1998. Gross
minimum future rentals and accrued rental income on noncancelable leases at
December 31, 1997 are as follows (in thousands):
<TABLE>
<CAPTION>

                                                   Accrued rental     Total accrual basis
        Year                   Cash rentals            income            rental income
      --------               ----------------    ------------------  ---------------------
<S>                              <C>                  <C>                   <C>
        1998                      $ 73,646             $ 2,048                $ 75,694
        1999                        64,175               1,125                  65,300
        2000                        54,020                 206                  54,226
        2001                        41,779                (539)                 41,240
        2002                        29,416                (854)                 28,562
 2003 and thereafter                68,743              (4,217)                 64,526
                                ----------           ---------             -----------
                                 $ 331,779            $ (2,231)              $ 329,548
                                ==========           =========             ===========
</TABLE>

The total minimum future rentals presented above do not include amounts that may
be received as tenant reimbursements for charges to cover increases in certain
operating costs.


                                      F-15
<PAGE>

                                  SCHEDULE III
          Real Estate and Accumulated Depreciation - December 31, 1997
                                 (in thousands)

<TABLE>
<CAPTION>

                                                                                               
                                                                        Initial Cost              
                                                          -------------------------------------- 

                                                                                        Net
                                           Encumberances                            Improvements  
                                                at                                  (Retirements) 
                                            December 31,             Building and       Since      
              Property Name                    1997        Land      Improvements    Acquisition   
- ---------------------------------------------------------------------------------------------- 

OFFICE PROPERTIES

NORTHERN PHILADELPHIA SUBURBS
<S>                                             <C>         <C>          <C>          <C>  
Horsham / Willow Grove / Jenkingtown,  PA
    700 Business Center Drive                    $ -        $  550       $ 2,201       $ 13      
    800 Business Center Drive                      -           895         3,585         47      
    One Progress Avenue                            -         1,403         5,629         51      
    500 Enterprise Road                            -         1,302         5,188          -  
    300 Welsh Road                                 -         1,289         5,157          -  
    1155 Business Center Drive                     -         1,029         4,124         10  
    650 Dresher Road                               -           635         2,501         64  
    655 Business Center Drive                    369         1,218         2,529        524  
Blue Bell / Plymouth Meeting / Fort Washington
    501 Office Center Drive                        -         1,796         7,192         46  
    500 Office Center Drive                        -         1,617         6,480          -  
    323 Norristown Road                            -         1,685         6,751          -  
    321 Norristown Road                            -         1,286         5,176         89  
    2240/50 Butler Pike                            -         1,103         4,627         29  
    220 Commerce Drive                             -         1,086         4,338          -  
    2260 Butler Pike                               -           661         2,727         73  
    120 West Germantown Pike                       -           684         2,773         51  
    140 West Germantown Pike                       -           481         1,976         13  

</TABLE>

<TABLE>
<CAPTION>
                                                    Gross Amount at Which Carried                                               
                                                          December 31, 1997                                                     
                                            ----------------------------------------------                                      
                                                                                                                                
                                                                                                                                
                                                                               Accumulated                                        
                                                        Building               Depreciation at                                    
                                                          and                  December 31,       Date of      Date     Depreciable 
              Property Name                   Land    Improvements  Total (3)    1997 (4)      Construction   Acquired     Life     
- ------------------------------------------- ----------------------------------------------  --------------------------------------- 
                                                                                                                                
OFFICE PROPERTIES                                                                                                               
                                                                                                                                
<S>                                           <C>          <C>       <C>           <C>             <C>        <C>          <C>
NORTHERN PHILADELPHIA SUBURBS                                                                                                   
Horsham / Willow Grove / Jenkingtown,  PA                                                                                       
    700 Business Center Drive                  $  550      $ 2,214   $ 2,764         $ 96          1986        1996         25      
    800 Business Center Drive                     895        3,632     4,527          179          1986        1996         25      
    One Progress Avenue                         1,403        5,680     7,083          306          1986        1996         25      
    500 Enterprise Road                         1,302        5,188     6,490          508          1990        1996         25      
    300 Welsh Road                              1,289        5,157     6,446           31          1985        1997         25      
    1155 Business Center Drive                  1,029        4,134     5,163          451          1990        1996         25      
    650 Dresher Road                              635        2,565     3,200          189          1984        1996         25      
    655 Business Center Drive                   1,218        3,053     4,271          120          1997        1997        31.5     
Blue Bell / Plymouth Meeting / Fort Washington                                                                                      
    501 Office Center Drive                     1,796        7,238     9,034          109          1974        1997         25      
    500 Office Center Drive                     1,617        6,480     8,097           99          1974        1997         25      
    323 Norristown Road                         1,685        6,751     8,436          164          1988        1997         25      
    321 Norristown Road                         1,286        5,265     6,551          137          1972        1997         25      
    2240/50 Butler Pike                         1,103        4,656     5,759          383          1984        1996         25      
    220 Commerce Drive                          1,086        4,338     5,424           27          1985        1997         25      
    2260 Butler Pike                              661        2,800     3,461          211          1984        1996         25      
    120 West Germantown Pike                      684        2,824     3,508          183          1984        1996         25      
    140 West Germantown Pike                      481        1,989     2,470          167          1984        1996         25      
                                                                                                                                
</TABLE>
     
                                      F-16

<PAGE>


<TABLE>
<CAPTION>
                                                                               
                                                                 Initial Cost
                                                          ----------------------

                                                                                
                                           Encumberances                                       
                                                at                                                         
                                            December 31,            Building and 
              Property Name                    1997         Land    Improvements 
- --------------------------------------------------------------------------------

<S>                                        <C>              <C>       <C>
Southern Bucks County
    33 Street Road - Greenwood Square I            -         851         3,407
    33 Street Road - Greenwood Square II           -       1,126         4,511
    33 Street Road - Greenwood Square III          -         350         1,401
    2010 Cabot Boulevard                           -         760         3,091
    2000 Cabot Boulevard                           -         569         2,281
    3000 Cabot Boulevard                           -         485         1,940
    2260/70 Cabot Boulevard                        -         415         1,661
    2005 Cabot Blolevard                           -         313         1,257
                                              ------      ------        ------
    Total Northern Philadelphia Suburbs          369      23,589        92,503
                                              ------      ------        ------

WESTERN PHILADELPHIA SUBURBS
Southern Route 202 Corridor, PA
    486 Thomas Jones Way                       6,279 (1)     805         3,256
    855 Springdale Drive                           -         838         3,370
    456 Creamery Way                               -         635         2,548
    110 Summit Drive                               -         402         1,647
    1336 Enterprise Drive                          -         731         2,946
    468 Creamery Way                               - (1)     526         2,112
    748 Springdale Drive                           -         231           931
Main Line, PA
    300 Berwyn Park                                -       3,358        13,422
    200 Berwyn Park                                -       2,364         9,460
    16 Campus Boulevard                            -       1,152         4,627
    Campus Boulevard - Lot 13                      -         912             -


</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                          
                                             Intial               Gross Amount at Which Carried                         
                                              Cost                      December 31, 1997                      
                                          -------------- ------------------------------------------------                           
                                                                                                                                    
                                               Net                                                                                  
                                           Improvements                                   Accumulated                               
                                           (Retirements)           Building             Depreciation at                      Depre-
                                              Since                   and                December 31,     Date of     Date    ciable
              Property Name                Acquisition     Land   Improvements  Total(3)    1997 (4)    Construction Acquired  Life 
- -------------------------------------------------------- ----------------------------------------------  ---------------------------
                                                                                                                                    
<S>                                        <C>           <C>         <C>          <C>       <C>          <C>       <C>         <C>  
Southern Bucks County                                                                                                               
    33 Street Road - Greenwood Square I             289        851        3,696    4,547           209      1985      1996       25 
    33 Street Road - Greenwood Square II            226      1,126        4,737    5,863           238      1985      1996       25 
    33 Street Road - Greenwood Square III           270        350        1,671    2,021            79      1985      1996       25 
    2010 Cabot Boulevard                              -        760        3,091    3,851            79      1985      1997       25 
    2000 Cabot Boulevard                             28        569        2,309    2,878            62      1985      1997       25 
    3000 Cabot Boulevard                             27        485        1,967    2,452            91      1986      1996       25 
    2260/70 Cabot Boulevard                          66        415        1,727    2,142            88      1984      1996       25 
    2005 Cabot Boulevard                              -        313        1,257    1,570            31      1985      1997       25 
                                          -------------- ----------------------------------------------                             
    Total Northern Philadelphia Suburbs           1,916     23,589       94,419  118,008         4,237                              
                                          -------------- ----------------------------------------------                             
                                                                                                                                    
WESTERN PHILADELPHIA SUBURBS                                                                                                        
Southern Route 202 Corridor, PA                                                                                                     
    486 Thomas Jones Way                            215        805        3,471    4,276           357      1990      1996       25 
    855 Springdale Drive                              -        838        3,370    4,208            77      1986      1997       25 
    456 Creamery Way                                  -        635        2,548    3,183           163      1987      1996       25 
    110 Summit Drive                                145        402        1,792    2,194           124      1985      1996       25 
    1336 Enterprise Drive                             -        731        2,946    3,677            97      1989      1997       25 
    468 Creamery Way                                 10        526        2,122    2,648           167      1990      1996       25 
    748 Springdale Drive                              -        231          931    1,162            21      1986      1997       25 
Main Line, PA                                                                                                                       
    300 Berwyn Park                                   -      3,358       13,422   16,780           228      1989      1997       25 
    200 Berwyn Park                                   4      2,364        9,464   11,828           161      1987      1997       25 
    16 Campus Boulevard                              28      1,152        4,655    5,807           350      1990      1996       25 
    Campus Boulevard - Lot 13                        -         912           -       912            -                 1997          
                                                                                                                                    
                                                                                                                                    
</TABLE>
                                      F-17
                                                          




<PAGE>

<TABLE>
<CAPTION>


                                                                                                
                                                                     Initial Cost               
                                                          ------------------------------------  

                                                                                       Net
                                           Encumberances                           Improvements   
                                               at                     Building    (Retirements)  
                                           December 13,                 and           Since       
              Property Name                   1997          Land     Improvements  Acquisition    
- -----------------------------------------------------------------------------------------------  

<S>                                         <C>             <C>           <C>           <C>             
    Campus Boulevard - Lot 7, 8 & 9            1,638         2,527             -            -   
    1974 Sproul Road                               -           841         3,368           37   
    100 Berwyn Park                                -         1,821         7,290            -   
    18 Campus Boulevard                            -           786         3,312         (104)  
King of Prussia / Valley Forge
    7000 Geerdes Boulevard                         -         2,664        10,670            -   
    1111 Old Eagle School Road                     -         1,932         7,721            -   
    500 North Gulph Road                           -         1,299         5,201          381   
Bala Cynwyd
    111 Presidential Boulevard                     -         5,412        21,612            -
                                           ---------      --------      --------       ------
    Total Western Philadelphia Suburbs         7,917        29,236       103,493          716
                                           ---------      --------      --------       ------  

READING / ALLENTOWN, PA
    100-300 Gundy Drive                        1,500         6,295        25,180            9   
    100 Katchel Blvd                               -         1,854         7,423            1   
    6575 Snowdrift Road                        2,294           600         2,411            -   
    7248 Tilghman Street                           -           731         2,969          (69)  
    7310 Tilghman Street                       2,504           553         2,246            -   
                                           ---------      --------      --------       ------  
    Total Reading/Allentown                    6,298        10,033        40,229          (59)  
                                           ---------      --------      --------       ------  
</TABLE>



<TABLE>                                          
<CAPTION>                                        
                                                 
                                          
                                                   Gross Amount at Which Carried                                                 
                                                         December 31, 1997                                                       
                                           -----------------------------------------------                                       
                                                                                                                                 
                                                                                                                                 
                                                                               Accumulated                                         
                                                       Building              Depreciation at                                     
                                                         and                   December 31,      Date of        Date     Depreciable
              Property Name                  Land    Improvements   Total (3)    1997 (4)      Construction   Acquired       Life   
- ------------------------------------------ -----------------------------------------------  ----------------------------------------
                                                                                                                                 
<S>                                         <C>         <C>         <C>            <C>       <C>       <C>      <C>              
    Campus Boulevard - Lot 7, 8 & 9            2,527            -      2,527            -                       1997                
    1974 Sproul Road                             841        3,405      4,246           74          1972         1997         25     
    100 Berwyn Park                            1,821        7,290      9,111          124          1986         1997         25     
    18 Campus Boulevard                          786        3,208      3,994          325          1990         1996         25     
King of Prussia / Valley Forge                                                                                                   
    7000 Geerdes Boulevard                     2,664       10,670     13,334          251          1988         1997         25     
    1111 Old Eagle School Road                 1,932        7,721      9,653           30          1962         1997         25     
    500 North Gulph Road                       1,299        5,582      6,881          294          1979         1996         25     
Bala Cynwyd                                                                                                                      
    111 Presidential Boulevard                 5,412       21,612     27,024           62          1974         1997         25     
                                           -----------------------------------------------                                       
    Total Western Philadelphia Suburbs        29,236      104,209    133,445      133,445                                        
                                           -----------------------------------------------                                       
                                                                                                                                 
READING / ALLENTOWN, PA                                                                                                          
    100-300 Gundy Drive                        6,295       25,189     31,484          424          1970         1997         25     
    100 Katchel Blvd                           1,854        7,424      9,278          124          1970         1997         25     
    6575 Snowdrift Road                          600        2,411      3,011          229          1988         1996         25     
    7248 Tilghman Street                         731        2,900      3,631          208          1987         1996         25     
    7310 Tilghman Street                         553        2,246      2,799          307          1985         1996         25     
                                           -----------------------------------------------                                       
    Total Reading/Allentown                   10,033       40,170     50,203        1,292                                        
                                           -----------------------------------------------                                       
</TABLE>                                   
                                          
                                          
                                      F-18



<PAGE>
<TABLE>
<CAPTION>
                                                                                                
                                                                     Initial Cost               
                                                          ------------------------------------  
 
                                                                                         Net
                                           Encumberances                             Improvements   
                                                at                      Building    (Retirements)  
                                           December 31,                   and           Since       
              Property Name                    1997          Land     Improvements    Acquisition    
- --------------------------------------------------------------------------------------------------  

SOUTHERN NEW JERSEY
Burlington County
<S> <C>                                    <C>               <C>          <C>             <C>   
    10000 Midlantic Drive                          -         3,206        12,857          151   
    2000 Midlantic Drive                           -         2,203         8,823            1   
    1000 Howard Boulevard                      5,784         2,297         9,288          417   
    1000 Atrium Way                                -         2,060         8,180            -   
    1120 Executive Boulevard                   5,922         2,074         8,415          373   
    15000 Midlantic Drive                          -         3,061        12,254          104   
    Three Greentree Centre                     9,796  (2)      324         6,024          115   
    9000 Midlantic Drive                           -         1,472         5,895            -   
    4000/5000 West Lincoln Drive                   -           877         3,526            5   
    1000/2000 West Lincoln Drive                   -           888         3,568           27   
    Two Greentree Centre                           -  (2)      264         4,693           41   
    One Greentree Centre                           -  (2)      345         4,440           34   
    8000 Lincoln Drive                             -           606         2,887          770   
    4000 Midlantic Drive                           -           714         2,947           89   
    Five Eves Drive                                -           703         2,819            -   
    9000 West Lincoln Drive                        -           610         2,422           26   
    Two Eves Drive                                 -           818         3,461           35   
    3000 West Lincoln Drive                        -           569         2,293            -   
    Four B Eves Drive                              -           588         2,369           30   
    Four A Eves Drive                              -           539         2,168            -   

</TABLE>




<TABLE>                                                   
<CAPTION>                                                 
                                                  Gross Amount at Which Carried                                               
                                                        December 31, 1997                                                       
                                          ----------------------------------------------                                      
                                                                                                                              
                                                                                                                              
                                                                             Accumulated                                        
                                                      Building               Depreciation at                                    
                                                        and                  December 31,     Date of       Date      Depreciable   
              Property Name                 Land    Improvements  Total (3)   1997 (4)     Construction   Acquired       Life       
- ----------------------------------------------------------------------------------------  ----------------------------------------- 
                                                                                                                              
SOUTHERN NEW JERSEY                                                                                                           
Burlington County                                                                                                             
<S> <C>                                       <C>         <C>       <C>             <C>        <C>         <C>          <C>         
    10000 Midlantic Drive                     3,206       13,008    16,214          303        1990        1997          25         
    2000 Midlantic Drive                      2,203        8,824    11,027          208        1989        1997          25         
    1000 Howard Boulevard                     2,297        9,705    12,002          421        1988        1997          25         
    1000 Atrium Way                           2,060        8,180    10,240           72        1989        1997          25         
    1120 Executive Boulevard                  2,074        8,788    10,862          367        1987        1997          25         
    15000 Midlantic Drive                     3,061       12,358    15,419          293        1991        1997          25         
    Three Greentree Centre                      324        6,139     6,463        2,817        1984        1986                   
    9000 Midlantic Drive                      1,472        5,895     7,367          139        1989        1997          25         
    4000/5000 West Lincoln Drive                877        3,531     4,408           99        1982        1997          25         
    1000/2000 West Lincoln Drive                888        3,595     4,483          111        1982        1997          25         
    Two Greentree Centre                        264        4,734     4,998        2,213        1983        1986                   
    One Greentree Centre                        345        4,474     4,819        2,072        1982        1986                   
    8000 Lincoln Drive                          606        3,657     4,263          344        1983        1996          25         
    4000 Midlantic Drive                        714        3,036     3,750           69        1981        1997          25         
    Five Eves Drive                             703        2,819     3,522           79        1986        1997          25         
    9000 West Lincoln Drive                     610        2,448     3,058           64        1983        1997          25         
    Two Eves Drive                              818        3,496     4,314          182        1987        1997          25         
    3000 West Lincoln Drive                     569        2,293     2,862           64        1982        1997          25         
    Four B Eves Drive                           588        2,399     2,987           98        1987        1997          25         
    Four A Eves Drive                           539        2,168     2,707           81        1987        1997          25         
                                                                                                                              
</TABLE>                                  


                                      F-19
                                                          
<PAGE>



<TABLE>
<CAPTION>


                                                                                               
                                                                     Initial Cost              
                                                          ------------------------------------ 

                                                                                         Net
                                           Encumberances                            Improvements  
                                                at                    Building       (Retirements) 
                                            December 31,                and             Since      
              Property Name                    1997         Land    Improvements     Acquisition   
- -------------------------------------------------------------------------------------------------- 

Camden County
<S>                                      <C>                <C>          <C>              <C>  
    Main Street - Plaza 1000                       -         2,726        10,931           27  
    Main Street- CAM                               -             1            11            -  
    457 Haddonfield Road                       9,099         2,142         9,120          464  
    One South Union Place                          -           445         1,803            -  
    1007 Laurel Oak Road                           -         1,225         4,900            -  
    6 East Clementon Road                          -           564         2,253            -  
    King & Harvard                                 -           263         1,069            -  
    Main Street - Piazza                           -           695         2,802            -  
    20 East Clementon Road                         -           517         2,070            -  
    Main Street - Promenade                        -           531         2,052            -  
    7 Foster Avenue                                -           174           696            -  
    10 Foster Avenue                               -           152           609            -  
    50 East Clementon Road                         -           640         2,561            -  
    5 Foster Avenue                                -            16            64            -  
                                             -------      --------     ---------      -------
    Total Southern New Jersey                 30,601        34,309       150,270        2,709  
                                             -------      --------     ---------      -------

DELAWARE
Northern Suburban Wimington
    One Righter Parkway                            -         2,545        10,195           22  
    100 Commerce Drive                             -         1,158         4,633            8  
                                             -------      --------     ---------      -------
    Total Delaware Properties                      -         3,703        14,828           30  
                                             -------      --------     ---------      -------

</TABLE>

<PAGE>


                                                               
<TABLE>                                                        
<CAPTION>                                                      
                                                               
                                                                 
                                            Gross Amount at Which Carried                                              
                                                  December 31, 1997                                                    
                                     ----------------------------------------------                                    
                                                                                                                       
                                                                                                                       
                                                                       Accumulated                                      
                                                Building              Depreciation at                                  
                                                  and                   December 31,     Date of        Date      Depreciable  
              Property Name            Land   Improvements   Total (3)    1997 (4)     Construction   Acquired       Life       
- -----------------------------------------------------------------------------------  ----------------------------------------   
                                                                                                                       
Camden County                                                                                                          
<S>                                    <C>         <C>        <C>             <C>       <C>            <C>           <C>        
    Main Street - Plaza 1000            2,726       10,958     13,684        364         1988          1997           25        
    Main Street- CAM                        1           11         12          2                       1997           25        
    457 Haddonfield Road                2,142        9,584     11,726        529         1990          1996          31.5       
    One South Union Place                 445        1,803      2,248         12                       1997           25        
    1007 Laurel Oak Road                1,225        4,900      6,125         11         1996          1997           25        
    6 East Clementon Road                 564        2,253      2,817          5         1980          1997           25        
    King & Harvard                        263        1,069      1,332          7                       1997           25        
    Main Street - Piazza                  695        2,802      3,497         93         1990          1997           25        
    20 East Clementon Road                517        2,070      2,587          5         1986          1997           25        
    Main Street - Promenade               531        2,052      2,583         68         1988          1997           25        
    7 Foster Avenue                       174          696        870          2         1983          1997           25        
    10 Foster Avenue                      152          609        761          1         1983          1997           25        
    50 East Clementon Road                640        2,561      3,201          6         1986          1997           25        
    5 Foster Avenue                        16           64         80          -         1968          1997           25        
                                     ----------------------------------------------                                    
    Total Southern New Jersey          34,309      152,979    187,288     11,201                                     
                                     ----------------------------------------------                                    
                                                                                                                       
DELAWARE                                                                                                               
Northern Suburban Wimington                                                                                            
    One Righter Parkway                 2,545       10,217     12,762          443      1989       1996      25        
    100 Commerce Drive                  1,158        4,641      5,799           53      1989       1997      25        
                                     ----------------------------------------------                                    
    Total Delaware Properties           3,703       14,858     18,561          496                                     
                                     ----------------------------------------------                                    
                                                                                                                       
</TABLE>            
                                     

                                      F-20

<PAGE>
<TABLE>
<CAPTION>

                                                                      Initial Cost              
                                                          ------------------------------------- 

                                                                                          Net
                                           Encumberances                              Improvements  
                                                at                      Building      (Retirements) 
                                           December 31,                   and             Since      
              Property Name                    1997          Land     Improvements     Acquisition   
- --------------------------------------------------------------------------------------------------- 

OTHER  MARKETS

<S>                                         <C>               <C>          <C>            <C>   
Twin Forks Office Park,                            -  (2)      2,194        3,324          239  
Raleigh, NC
    5910 -6090 Six Forks
Lawrenceville, NJ
    168 Franklin Corner Drive                      -             398        1,597           39  
Atlantic County
    500 Scarborough Drive                          -           1,233        4,932            -  
    501 Scarborough Drive                          -           1,241        4,966            -  
                                             -------        --------     --------      -------
Subtotal - Office Properties                  45,185         105,936      416,142        5,590
                                             -------        --------     --------      -------

INDUSTRIAL PROPERTIES

NORTHERN PHILADELPHIA SUBURBS
Southern Bucks County, PA
    2200 Cabot Boulevard                           -             770        3,117            -  
    2250 Cabot Boulevard                           -             559        2,240            -  
    2510 Metropolitan Drive                        -           3,304       13,218            -  
                                             -------        --------     --------      -------
    Total Northern Philadelphia Suburbs            -           4,633       18,575            -  
                                             -------        --------     --------      -------


</TABLE>




<TABLE>                                               
<CAPTION>                                             
                                                Gross Amount at Which Carried                                                      
                                                      December 31, 1997                                                     
                                        -----------------------------------------------                                     
                                                                                                                            
                                                                                                                            
                                                                             Accumulated                                       
                                                      Building               Depreciation at                                   
                                                        and                  December 31,     Date of        Date     Depreciable   
              Property Name                Land     Improvements  Total (3)    1997 (4)     Construction   Acquired      Life       
- --------------------------------------  -----------------------------------------------  -----------------------------------------  
                                                                                                                            
OTHER  MARKETS                                                                                                              
                                                                                                                            
<S>                                         <C>          <C>       <C>          <C>           <C>           <C>         <C>         
Twin Forks Office Park,                      2,194        3,563     5,757        1,546         1982         1986         25         
Raleigh, NC                                                                                                                 
    5910 -6090 Six Forks                                                                                                    
Lawrenceville, NJ                                                                                                            
    168 Franklin Corner Drive                  398        1,636     2,034           88         1976         1996         25         
Atlantic County                                                                                                                
    500 Scarborough Drive                    1,233        4,932     6,165           11         1987         1997         25         
    501 Scarborough Drive                    1,241        4,966     6,207           11         1987         1997         25         
                                        -----------------------------------------------                                     
Subtotal - Office Properties               105,936      421,732   527,668       21,787                                      
                                        -----------------------------------------------                                     
                                                                                                                            
INDUSTRIAL PROPERTIES                                                                                                       
                                                                                                                            
NORTHERN PHILADELPHIA SUBURBS                                                                                               
Southern Bucks County, PA                                                                                                   
    2200 Cabot Boulevard                       770        3,117     3,887          141         1985        1996         25         
    2250 Cabot Boulevard                       559        2,240     2,799          101         1985        1996         25         
    2510 Metropolitan Drive                  3,304       13,218    16,522          133         1981        1997         25         
                                        -----------------------------------------------                                     
    Total Northern Philadelphia Suburbs      4,633       18,575    23,208          375                                      
                                        -----------------------------------------------                                     
                                                                                                                            
                                                                                                                            
</TABLE>                               



                                      F-21


<PAGE>

<TABLE>
<CAPTION>


                                                                                                  
                                                                       Initial Cost               
                                                          --------------------------------------- 

                                                                                            Net
                                           Encumberances                               Improvements  
                                                at                        Building     (Retirements) 
                                           December 31,                     and            Since      
              Property Name                    1997         Land       Improvements     Acquisition   
- ----------------------------------------------------------------------------------------------------- 

<S>                                        <C>            <C>          <C>          <C>           
WESTERN PHILADELPHIA SUBURBS
Lansdale, PA
    1510 Gehman Road                               -          1,201         4,846         (225) 
King of Prussia, PA
    201/221 King Manor Drive                       -            713         2,898            -  
                                            --------      ---------     ---------      ------- 
    Total Western Philadelphia Suburbs             -          1,914         7,744         (225) 
                                            --------      ---------     ---------      ------- 

SOUTHERN NEW JERSEY
Burlington County, NJ
    500 Highland Drive                             -          1,062         4,265            -  
    300 Highland Drive                             -          1,069         4,247           28  
    400 Highland Drive                             -            572         2,299            -  
    600 Highland Drive                             -            549         2,205            -  
    1000 East Lincoln Drive                        -            263         1,059            -  
Camden County, NJ
    2 Foster Avenue                                -            404         1,618            -  
    1 Foster Avenue                                -            198           790            -  
    4 Foster Avenue                                -            187           746            -  
    55 U.S. Avenue                                 -            869         3,476            -  
    5 U.S. Avenue                                  -             40           159            -  
                                            --------      ---------     ---------      ------- 
    Total Southern New Jersey                      -          5,213        20,864           28  
                                            --------      ---------     ---------      ------- 
Subtotal - Industrial Properties                   -         11,760        47,183         (197) 
                                            --------      ---------     ---------      ------- 
Grand Total - All Properties                $ 45,185      $ 117,696     $ 463,325      $ 5,393  
                                            ========      =========     =========      =======


</TABLE>


<PAGE>


<TABLE>                                                           
<CAPTION>                                                         
                                                                      
                                                                  
                                                   Gross Amount at Which Carried                                                   
                                                         December 31, 1997                                                         
                                         ---------------------------------------------------                                       
                                                                                                                                   
                                                                                                                                   
                                                                               Accumulated                                         
                                                       Building                Depreciation at                                     
                                                         and                   December 31,     Date of     Date   Depreciable     
              Property Name                  Land     Improvements  Total (3)    1997 (4)     Construction Acquired   Life          
- ---------------------------------------  ---------------------------------------------------  -------------------------------      
                                                                                                                                   
<S>                                         <C>           <C>       <C>        <C>            <C>           <C>        <C>         
WESTERN PHILADELPHIA SUBURBS                                                                                                       
Lansdale, PA                                                                                                                       
    1510 Gehman Road                            1,201        4,621       5,822          273      1990       1996      25           
King of Prussia, PA                                                                                                                
    201/221 King Manor Drive                      713        2,898       3,611           86      1964       1997      25           
                                         ---------------------------------------------------                                       
    Total Western Philadelphia Suburbs          1,914        7,519       9,433          359                                        
                                         ---------------------------------------------------                                       
                                                                                                                                   
SOUTHERN NEW JERSEY                                                                                                                
Burlington County, NJ                                                                                                              
    500 Highland Drive                          1,062        4,265       5,327          104      1990       1997      25           
    300 Highland Drive                          1,069        4,275       5,344          107      1990       1997      25           
    400 Highland Drive                            572        2,299       2,871           56      1990       1997      25           
    600 Highland Drive                            549        2,205       2,754           54      1990       1997      25           
    1000 East Lincoln Drive                       263        1,059       1,322            1      1981       1997      25           
Camden County, NJ                                                                                                                  
    2 Foster Avenue                               404        1,618       2,022            4      1974       1997      25           
    1 Foster Avenue                               198          790         988            1      1972       1997      25           
    4 Foster Avenue                               187          746         933            1      1974       1997      25           
    55 U.S. Avenue                                869        3,476       4,345            8      1982       1997      25           
    5 U.S. Avenue                                  40          159         199            -      1987       1997      25           
                                         ---------------------------------------------------                                       
    Total Southern New Jersey                   5,213       20,892      26,105          336                                        
                                         ---------------------------------------------------                                       
Subtotal - Industrial Properties               11,760       46,986      58,746        1,070                                        
                                         ---------------------------------------------------                                       
Grand Total - All Properties                $ 117,696    $ 468,718   $ 586,414     $ 22,857                                        
                                         ===================================================                                       
                                                                                                                                   
                                                                                                                                   
</TABLE>                                
                                                                  
                                                                  

                                      F-22

<PAGE>


(1) Both of these properties secure a single loan.

(2) At December 31, 1997, the two mortgage loans total $2,658,000 and
    $7,138,000, receptively. The loans are cross-collateralized and are secured
    by first mortgages on each property.

(3) Reconciliation of Real Estate:
    The following table reconciles the real estate investments from January 1,
    1997 to December 31, 1997(in thousands):
         Balance at beginning of year       $161,284
         Additions during year:
           Acquisitions                      419,502
           Capital expenditures                6,120
         Deletions during year:
           Retirements                          (492)
         Balance at end of year             $586,414

(4) Reconciliation of Accumulated Depreciation:
    The following table reconciles the accumulated depreciation on real estate
    investments from January 1, 1997 to December 31, 1997(in thousands):
         Balance at beginning of year        $ 9,383
         Additions during year:
           Depreciation expense               13,966
         Deletions during year:
           Retirements                          (492)
                                            --------
         Balance at end of year              $22,857

                                     F-23
<PAGE>

                                   SIGNATURES

         Pursuant to the requirements of Section 12 of the Securities Exchange
Act of 1934, the Registrant has duly caused this registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized.


                                   BRANDYWINE OPERATING PARTNERSHIP, L.P.

                                   By: Brandywine Realty Trust
                                   Its: General Partner

Date: June 5, 1998                    By: /s/ Gerard H. Sweeney
                                          ----------------------
                                          Gerard H. Sweeney
                                          President and Chief Executive Officer

                                      



<PAGE>









                                  EXHIBIT INDEX

21.1     List of Subsidiaries
27.1     Financial Data Schedule






<PAGE>

                                                                    Exhibit 21.1


                    Subsidiaries of the Operating Partnership

Witmer Operating Partnership I, L.P., a Delaware limited partnership 
Fifteen Horsham, L.P., a Pennsylvania limited partnership 
C/N Oaklands Limited Partnership I, a Pennsylvania limited partnership 
Newtech IV Limited Partnership, a Pennsylvania limited partnership
Newtech III Limited Partnership, a Pennsylvania limited partnership
LC/N Keith Valley Limited Partnership I, a Pennsylvania limited partnership
LC/N Horsham Limited Partnership, a Pennsylvania limited partnership
Nichols Lansdale Limited Partnership III, a Pennsylvania limited partnership
C/N Leedom Limited Partnership II, a Pennsylvania limited partnership
C/N Oaklands Limited Partnership III, a Pennsylvania limited partnership
Iron Run Limited Partnership V, a Pennsylvania limited partnership
C/N Iron Run Limited Partnership III, a Pennsylvania limited partnership
Brandywine Central, L.P.
Brandywine TB I, L.P., a Pennsylvania limited partnership
Brandywine TB II, L.P., a Pennsylvania limited partnership
Brandywine TB III, L.P., a Pennsylvania limited partnership
Brandywine Dominion, L.P., a Pennsylvania limited partnership
Brandywine P.M., L.P., a Pennsylvania limited partnership
Brandywine I.S., L.P., a Pennsylvania limited partnership
Brandywine F.C., L.P., a Pennsylvania limited partnership
Brandywine Norriton, L.P., a Pennsylvania limited partnership
Brandywine Realty Partners, a Pennsylvania general partnership
Brandywine Holdings I, Inc., a Pennsylvania corporation
Brandywine Holdings II, Inc., a Pennsylvania corporation
Brandywine Holdings III, Inc., a Pennsylvania corporation
Brandywine Realty Services Corporation, a Pennsylvania corporation
Brandywine Main Street, LLC, a Delaware limited liability company
Brandywine Acquisitions, LLC, a Delaware limited liability company
1100 Brandywine, LLC, a Delaware limited liability company
Brandywine Leasing, LLC, a Delaware limited liability company
Brandywine Trenton Urban Renewal, LLC, a Delaware limited liability company
Brandywine New Brunswick Urban Renewal, LLC, a Delaware limited liability
  company
Brandywine TBI, LLC, a Pennsylvania limited liability company
Brandywine TB II, LLC, a Pennsylvania limited liability company
Brandywine TB III, LLC, a Pennsylvania limited liability company
Brandywine Witmer, LLC, a Pennsylvania limited liability company
Brandywine Dominion, LLC, a Pennsylvania limited liability company
Brandywine P.M., LLC, a Pennsylvania limited liability company
Brandywine I.S., LLC, a Pennsylvania limited liability company
Brandywine F.C., LLC, a Pennsylvania limited liability company
Brandywine Norriton, LLC, a Pennsylvania limited liability company
Christiana Center Operating Company I, LLC, a Delaware limited liability company
Christiana Center Operating II, LLC, a Delaware limited liability company
Four Tower Bridge Associates, a Pennsylvania limited partnership
Five Tower Bridge Associates, a Pennsylvania limited partnership
Plymouth Meeting General Partnership, a Pennsylvania general partnership
1000 Chesterbrook Boulevard Partnership, a Pennsylvania general partnership
Interstate 202 General Partnership, a Pennsylvania general partnership

                                      -22-


<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<EXCHANGE-RATE>                                      1
<CASH>                                          29,442
<SECURITIES>                                         0
<RECEIVABLES>                                    3,689
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                33,343
<PP&E>                                         586,414
<DEPRECIATION>                                  22,857
<TOTAL-ASSETS>                                 621,481
<CURRENT-LIABILITIES>                           17,612
<BONDS>                                        163,964
                                0
                                          0
<COMMON>                                           241
<OTHER-SE>                                     425,287
<TOTAL-LIABILITY-AND-EQUITY>                   621,481
<SALES>                                              0
<TOTAL-REVENUES>                                61,060
<CGS>                                                0
<TOTAL-COSTS>                                   45,772
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               7,079
<INCOME-PRETAX>                                 14,502
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             14,502
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    14,502
<EPS-PRIMARY>                                     0.96
<EPS-DILUTED>                                     0.95
        

</TABLE>


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