EXHIBIT 25.1

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FORM T-1

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF ELIGIBILITY
UNDER THE TRUST INDENTURE ACT OF 1939 OF A
CORPORATION DESIGNATED TO ACT AS TRUSTEE

CHECK IF AN APPLICATION TO DETERMINE
ELIGIBILITY OF A TRUSTEE PURSUANT TO
SECTION 305(b)(2)           |__|

___________________________

THE BANK OF NEW YORK
(Exact name of trustee as specified in its charter)

New York (State of incorporation if not a U.S. national bank)	13-5160382 (I.R.S. employer identification no.)
One Wall Street, New York, N.Y. (Address of principal executive offices)	10286 (Zip code)

___________________________

BRANDYWINE REALTY TRUST
(Exact name of obligor as specified in its charter)

Maryland
(State or other jurisdiction of
incorporation or organization) 23-2413352
(I.R.S. employer
identification no.)

BRANDYWINE OPERATING PARTNERSHIP, L.P.
(Exact name of obligor as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization)	23-2862640 (I.R.S. employer identification no.)
401 Plymouth Road, Suite 500 Plymouth Meeting, Pennsylvania (Address of principal executive offices)	19462 (Zip code)

___________________________

Debt Securities
(Title of the indenture securities)

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1. General information. Furnish the following information as to the Trustee:

(a) Name and address of each examining or supervising authority to which it is subject.

Name	Address
Superintendent of Banks of the State of New York	One State Street, New York, N.Y. 10004-1417, and Albany, N.Y. 12223
Federal Reserve Bank of New York	33 Liberty Street, New York, N.Y. 10045
Federal Deposit Insurance Corporation	Washington, D.C. 20429
New York Clearing House Association	New York, New York 10005

(b) Whether it is authorized to exercise corporate trust powers.

Yes.

2. Affiliations with Obligor.

If the obligor is an affiliate of the trustee, describe each such affiliation.

None.

16. List of Exhibits.

Exhibits identified in parentheses below, on file with the Commission, are incorporated herein by reference as an exhibit hereto, pursuant to Rule 7a-29 under the Trust Indenture Act of 1939 (the "Act") and 17 C.F.R. 229.10(d).

1. A copy of the Organization Certificate of The Bank of New York (formerly Irving Trust Company) as now in effect, which contains the authority to commence business and a grant of powers to exercise corporate trust powers. (Exhibit 1 to Amendment No. 1 to Form T-1 filed with Registration Statement No. 33-6215, Exhibits 1a and 1b to Form T-1 filed with Registration Statement No. 33-21672, Exhibit 1 to Form T-1 filed with Registration Statement No. 33-29637 and Exhibit 1 to Form T-1 filed with Registration Statement No. 333-121195.)

4. A copy of the existing By-laws of the Trustee. (Exhibit 4 to Form T-1 filed with Registration Statement No. 333-121195.)

6. The consent of the Trustee required by Section 321(b) of the Act. (Exhibit 6 to Form T-1 filed with Registration Statement No. 333-106702.)

7. A copy of the latest report of condition of the Trustee published pursuant to law or to the requirements of its supervising or examining authority.

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SIGNATURE

     Pursuant to the requirements of the Act, the Trustee, The Bank of New York, a corporation organized and existing under the laws of the State of New York, has duly caused this statement of eligibility to be signed on its behalf by the undersigned, thereunto duly authorized, all in The City of New York, and State of New York, on the 23rd day of January, 2006.

THE BANK OF NEW YORK

By: /S/ VAN K. BROWN
Name: VAN K. BROWN
Title: VICE PRESIDENT

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Exhibit 7

Consolidated Report of Condition of

THE BANK OF NEW YORK

of One Wall Street, New York, N.Y. 10286
And Foreign and Domestic Subsidiaries,

a member of the Federal Reserve System, at the close of business September 30, 2005, published in accordance with a call made by the Federal Reserve Bank of this District pursuant to the provisions of the Federal Reserve Act.

ASSETS		Dollar Amounts In Thousands
Cash and balances due from depository     institutions:
Noninterest-bearing balances and currency      and coin	$	3,223,000
Interest-bearing balances		6,428,000
Securities:
Held-to-maturity securities		2,071,000
Available-for-sale securities		22,899,000
Federal funds sold and securities purchased     under agreements to resell
Federal funds sold in domestic offices		1,783,000
Securities purchased under agreements to      resell		271,000
Loans and lease financing receivables:
Loans and leases held for sale		0
Loans and leases, net of unearned      income		34,349,000
LESS: Allowance for loan and      lease losses		557,000
Loans and leases, net of unearned      income and allowance		33,792,000
Trading assets		5,761,000
Premises and fixed assets (including     capitalized leases)		801,000
Other real estate owned		0
Investments in unconsolidated subsidiaries     and associated companies		288,000
Customers’ liability to this bank on     acceptances outstanding		106,000
Intangible assets:
Goodwill		2,158,000
Other intangible assets		765,000
Other assets		5,391,000
Total assets	$	85,737,000
LIABILITIES
Deposits:
In domestic offices	$	35,878,000
Noninterest-bearing		16,458,000
Interest-bearing		19,420,000
In foreign offices, Edge and Agreement      subsidiaries, and IBFs		26,474,000
Noninterest-bearing		448,000
Interest-bearing		26,026,000
Federal funds purchased and securities sold     under agreements to repurchase
Federal funds purchased in domestic      offices		3,200,000
Securities sold under agreements to      repurchase		101,000
Trading liabilities		2,914,000
Other borrowed money:     (includes mortgage indebtedness and     obligations under capitalized leases)		1,247,000
Not applicable
Bank’s liability on acceptances executed and     outstanding		108,000
Subordinated notes and debentures		1,440,000
Other liabilities		6,119,000
Total liabilities	$	77,481,000
Minority interest in consolidated     subsidiaries		141,000
EQUITY CAPITAL
Perpetual preferred stock and related     surplus		0
Common stock		1,135,000
Surplus (exclude all surplus related to     preferred stock)		2,092,000
Retained earnings		4,976,000
Accumulated other comprehensive income		-88,000
Other equity capital components		0
Total equity capital		8,115,000
Total liabilities, minority interest, and equity     capital	$	85,737,000

     I, Thomas J. Mastro, Executive Vice President and Comptroller of the above-named bank do hereby declare that this Report of Condition is true and correct to the best of my knowledge and belief.

          Thomas J. Mastro,
Executive Vice President and Comptroller

     We, the undersigned directors, attest to the correctness of this statement of resources and liabilities. We declare that it has been examined by us, and to the best of our knowledge and belief has been prepared in conformance with the instructions and is true and correct.

Thomas A. Renyi
Gerald L. Hassell Directors

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