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ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP
1. ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP
Brandywine Realty Trust (the Parent “Company”) is a self-administered and self-managed real estate investment trust (“REIT”) engaged in the acquisition, development, redevelopment, ownership, management, and operation of a portfolio of office and mixed-use properties. The Parent Company owns its assets and conducts its operations through Brandywine Operating Partnership, L.P. (the “Operating Partnership”) and subsidiaries of the Operating Partnership. The Parent Company is the sole general partner of the Operating Partnership and, as of December 31, 2024, owned a 99.7% interest in the Operating Partnership. The Parent Company’s common shares of beneficial interest are publicly traded on the New York Stock Exchange under the ticker symbol “BDN.” The Parent Company, the Operating Partnership, and their consolidated subsidiaries are collectively referred to as the “Company.”
As of December 31, 2024, the Company owned and consolidated 64 properties that contained an aggregate of approximately 12.1 million net rentable square feet (collectively, the “Properties”). The Company’s core portfolio of operating properties (the “Core Properties”) exclude properties under development or redevelopment properties, recently completed - not stabilized properties and properties held for sale. The Properties were comprised of the following as of December 31, 2024:
Number of PropertiesRentable Square Feet
Office properties59 11,006,099 
Mixed-use properties924,450 
Core Properties63 11,930,549 
Recently completed - not stabilized property (a)168,294 
The Properties64 12,098,843 
(a)The Company reclassifies a Property from “development/redevelopment property” to “recently completed – not-stabilized property” after the date that the development or redevelopment of the Property is placed in service and prior to the time that the Property reaches at least 90% occupancy. At such time as the Property reaches at least 90% occupancy, the Company reclassifies the Property as a “Core Property.”

In addition to the Properties, as of December 31, 2024, the Company owned 130.6 acres of land held for development. The Company also held a leasehold interest in one land parcel totaling 0.8 acres, acquired through a prepaid 99-year ground lease, and held options to purchase approximately 5.1 additional acres of undeveloped land. As of December 31, 2024, the total potential development that this inventory of land could support under current zoning and entitlements, including the parcels under option, amounted to an estimated 11.9 million square feet. 
As of December 31, 2024, the Company also owned economic interests in ten unconsolidated real estate ventures (see Note 4 “Investment in Unconsolidated Real Estate Ventures” for further information). The Properties and the properties owned by the unconsolidated real estate ventures are primarily located in or near Philadelphia, Pennsylvania; Austin, Texas; Washington, D.C.; Southern New Jersey; and Wilmington, Delaware. 
All references to building square footage, rentable square feet, acres, occupancy percentage, the number of buildings, and tax basis are unaudited.
The Company conducts its third-party real estate management services business primarily through ten management companies (collectively, the “Management Companies”): Brandywine Realty Services Corporation (“BRSCO”), BDN Management Inc. (“BMI”), Brandywine Properties I Limited, Inc. (“BPI”), BDN Brokerage, LLC (“BBL”), Brandywine Properties Management, L.P. (“BPM”), Brandywine Brokerage Services, LLC (“BBS”), BDN GC Services LLC (“BGCS”), Brandywine Cira Brokerage, LLC (“BCB”), 3025 JFK TRS, LLC (“3025TRS”), and OCS/TRS Services (“OCS”). Each of BRSCO, BMI, BPI, 3025TRS, and OCS is a taxable REIT subsidiary. BBS, BBL, BPM, BGCS, and BCB are tax disregarded entities wholly owned by the taxable REIT subsidiary entities. As of December 31, 2024, the Operating Partnership owned, directly and indirectly, 100% of each of BRSCO, BMI, BPI, BBL, BPM, BBS, and BGCS. As of December 31, 2024, the Management Company subsidiaries were managing properties containing an aggregate of approximately 19.4 million net rentable square feet, of which approximately 12.1 million net rentable square feet relate to Properties owned by the Company and approximately 7.3 million net rentable square feet relate to properties owned by the unconsolidated real estate ventures.