BRANDYWINE REALTY TRUST
EXHIBIT 10.73
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<TYPE>EX-10
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<FILENAME>ex10-73.txt
<DESCRIPTION>EXHIBIT 10.73
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                             BRANDYWINE REALTY TRUST
                              NON-QUALIFIED OPTION
                              --------------------

         This is a Non-Qualified Stock Option Award dated as of July 25, 2002
(the "Award") from Brandywine Realty Trust, a Maryland real estate investment
trust (the "Company") to Gerard H. Sweeney ("Optionee"). Terms used herein as
defined terms and not defined herein have the meanings assigned to them in the
Brandywine Realty Trust 1997 Long-Term Incentive Plan, as amended from time to
time (the "Plan").

         1. Definitions. As used herein:

                  (a) "Board" means the Board of Trustees of the Company, as
constituted from time to time.

                  (b) "Code" means the Internal Revenue Code of 1986, as amended
from time to time, and any successor thereto.

                  (c) "Common Share" means a common share of beneficial
interest, $.01 par value per share, of the Company.

                  (d) "Committee" means the Committee appointed by the Board in
accordance with Section 2 of the Plan, if one is appointed and in existence at
the time of reference. If no Committee has been appointed pursuant to Section 2,
or if such a Committee is not in existence at the time of reference, "Committee"
means the Board.

                  (e) "Date of Exercise" means the date on which the notice
required by Paragraph 6 hereof is hand-delivered, delivered by facsimile
transmission or delivered via United States mail postage prepaid.

                  (f) "Date of Grant" means July 25, 2002, the date on which
the Company awarded the Option.

                  (g) "Expiration Date" means 5:00 p.m. on August 22, 2007.

                  (h) "Fair Market Value" means the Fair Market Value of a
Share, as determined pursuant to the Plan.

                  (i) "Option" means the option to purchase Shares hereby
granted.

                  (j) "Option Price" means $19.50; provided that in the event of
any recapitalization, Share distribution or dividend, Share split or
combination, the Option Price shall be equitably and proportionally adjusted.
The Option Price shall also be subject to adjustment pursuant to Section 3(c) of
the Plan.

                  (k) "Prior Warrant" means the Warrant held by Optionee to
purchase 100,000 Common Shares that expires on August 22, 2002.

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                  (l) "Shares" means the 100,000 Common Shares which are the
subject of the Option hereby granted. In the event of any recapitalization,
Share distribution or dividend, Share split or combination, the number of Shares
that remain subject to the Option shall be equitably and proportionally
adjusted. The number of Shares that remain subject to the Option shall also be
subject to adjustment pursuant to Section 3(c) of the Plan. Notwithstanding the
foregoing, the number of Shares available for exercise as determined under this
paragraph shall be rounded down to the nearest whole Share.

         2. Grant of Option. On the terms and conditions set forth herein and in
the Plan, the Company hereby grants to the Optionee the Option to purchase any
or all of the Shares.

         3. Time of Exercise of Options. The Option may be exercised at any time
and from time to time after expiration of the Prior Warrant on August 22, 2002
and prior to 5:00 p.m. on the Expiration Date, when the right to exercise shall
terminate absolutely.

         4. Termination of Option. In the event that the Option remains
outstanding upon the occurrence of a transaction constituting a Change of
Control under clause (ii) of the definition of the term "Change of Control" in
the Plan and Optionee has not exercised the Option immediately prior to the
consummation of the transaction giving rise to the Change of Control (e.g.,
consummation of the merger, reorganization, consolidation or asset sale or
disposition), then, unless the Company provides for (as part of the Change of
Control transaction or otherwise) either (x) the continuation of the Option
following the Change of Control or (y) a substitute option exercisable for
shares of common stock or common shares of beneficial interest of the purchaser
or successor to the Company in the transaction resulting in the Change of
Control (with such adjustments in the exercise price and number of shares
covered by the Option as the Board shall determine, taking into account the
conversion or exchange ratio in the Change of Control transaction), the Option
shall automatically terminate and Optionee's right to acquire Common Shares
hereunder shall terminate absolutely.

         5. Payment for Shares. Full payment for Shares purchased upon the
exercise of an Option shall be made in cash or, at the election of the Optionee,
by surrendering Common Shares with an aggregate Fair Market Value as of the last
trading day prior to the Date of Exercise equal to the aggregate Option Price,
or by delivering such combination of Common Shares and cash as the Optionee may
elect.

         6. Manner of Exercise. The Option shall be exercised by giving written
notice of exercise to:

                  Brandywine Realty Trust
                  401 Plymouth Road, Suite 500
                  Plymouth Meeting, PA 19462
                  Attention:  Chief Financial Officer

All notices under this agreement shall be deemed to have been given when
hand-delivered, delivered by facsimile transmission or delivered by U.S. mail
postage prepaid, and shall be irrevocable once given.


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         7. Nontransferability of Option. The Option may not be transferred or
assigned by the Optionee otherwise than as and to the extent permitted by
Section 5(e) of the Plan; and any attempt at assignment or transfer contrary to
the provisions of the Plan or the levy of any execution, attachment or similar
process upon the Option shall be null and void and without effect. Any exercise
of the Option by a person other than the Optionee shall be accompanied by
appropriate proofs of the right of such person to exercise the Option.

         8. Securities Laws. The Committee may from time to time impose any
conditions on the exercise of the Option as it deems necessary or appropriate to
comply with the then-existing requirements of the Securities Act of 1933, as
amended, or of the Securities Exchange Act of 1934, as amended, including Rule
16b-3 (or any similar rule) of the Securities and Exchange Commission. If the
listing, registration or qualification of Shares issuable on the exercise of the
Option upon any securities exchange or under any federal or state law, or the
consent or approval of any governmental regulatory body is necessary as a
condition of or in connection with the purchase of such Shares, the Company
shall not be obligated to issue or deliver the certificates representing the
Shares otherwise issuable on the exercise of the Option unless and until such
listing, registration, qualification, consent or approval shall have been
effected or obtained. If registration is considered unnecessary by the Company
or its counsel, the Company may cause a legend to be placed on such Shares
calling attention to the fact that they have been acquired for investment and
have not been registered.

         9. Issuance of Certificate. Subject to the provisions of Paragraphs 7
and 9 hereof, a certificate for the Shares issuable on the exercise of the
Option shall be delivered to the Optionee or to his personal representative,
heir or legatee as promptly as feasible after the exercise, provided that no
certificates for Shares will be delivered to the Optionee or to his personal
representative, heir or legatee unless the Option Price has been paid in full.

         10. Rights Prior to Exercise. The Optionee shall not have any right as
a shareholder with respect to any Shares subject to his Options until the Option
shall have been exercised in accordance with the terms of the Plan and this
Award and the Optionee shall have paid the full purchase price for the number of
Shares in respect of which the Option was exercised, provided that in the event
that the Optionee's employment with the Company is terminated for Cause, upon a
determination by the Committee, the Optionee shall automatically forfeit all
Shares otherwise subject to delivery upon exercise of an Option but for which
the Company has not yet delivered the Share certificates, upon refund by the
Company of the Option Price.

         11. Status of Option; Interpretation. The Option is intended to be a
non-qualified stock option. Accordingly, it is intended that the transfer of
property pursuant to the exercise of the Option shall be subject to federal
income tax in accordance with section 83 of the Code. The Option is not intended
to qualify as an incentive stock option within the meaning of section 422 of the
Code. The interpretation and construction of any provision of this Option or the
Plan made by the Committee shall be final and conclusive and, insofar as
possible, shall be consistent with the intention expressed in this Paragraph 11.


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         12. Option Not to Affect Employment. The Option granted hereunder shall
not confer upon the Optionee any right to continue in the employment of the
Company or any Subsidiary.

         13. Miscellaneous.

                  (a) The address for the Optionee to which notice, demands and
other communications to be given or delivered under or by reason of the
provisions hereof shall be the address contained in the Company's personnel
records.

                  (b) This Award and all questions relating to its validity,
interpretation, performance, and enforcement shall be governed by and construed
in accordance with the laws of the Commonwealth of Pennsylvania.

         14. Withholding of Taxes. Whenever the Company proposes or is required
to issue or deliver Shares in connection with the exercise of the Option, the
Company shall have the right to (a) require the Optionee to remit to the Company
an amount sufficient to satisfy any federal, state and/or local withholding tax
requirements prior to the issuance or delivery of any Shares (which withholding
requirement may be satisfied through the surrender to the Company of Shares
otherwise issuable upon the exercise of the Options having a Fair Market Value
equal to the amount sufficient to satisfy the withholding requirements) or (b)
take whatever action it deems necessary to protect its interests with respect to
tax liabilities.

         IN WITNESS WHEREOF, the Company has granted this Award on the day and
year first above written.

                                         BRANDYWINE REALTY TRUST


                                         BY:
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                                         TITLE:
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