The Parent Company is a self-administered and self-managed real estate investment trust (“REIT”) that provides leasing, property management, development, redevelopment, acquisition and other tenant-related services for a portfolio of office, retail and mixed-use properties. The Parent Company owns its assets and conducts its operations through the Operating Partnership and subsidiaries of the Operating Partnership. The Parent Company is the sole general partner of the Operating Partnership and, as of September 30, 2018, owned a 99.2% 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”.

As of September 30, 2018, the Company owned 93 properties that contain an aggregate of approximately 16.5 million net rentable square feet (collectively, the “Properties”). The Company’s core portfolio of operating properties, as of September 30, 2018, excludes two development properties and five redevelopment properties under construction or committed for construction (collectively, the “Core Properties”). The Properties were comprised of the following as of September 30, 2018:

	Number of Properties		Rentable Square Feet
Office properties		73		13,673,405
Mixed-use properties		4		646,741
Retail properties		1		17,884
Core Properties		78		14,338,030
Development properties		2		247,818
Redevelopment properties		5		583,719
Held for sale properties (a)		8		1,293,197
The Properties		93		16,462,764

(a) As of September 30, 2018, eight office properties were classified as held for sale in the Company’s Metropolitan Washington, D.C. segment. See Note 3, “Real Estate Investments,” for further information.

In addition to the Properties, as of September 30, 2018, the Company owned land held for development, comprised of 234 acres of undeveloped land, of which 37.9 acres were held for sale, 1.8 acres related to leasehold interests in two land parcels, each acquired through prepaid 99-year ground leases, and held options to purchase approximately 55.5 additional acres of undeveloped land. As of September 30, 2018, the total potential development that these land parcels could support under current zoning and entitlements, including the parcels under option, amounted to an estimated 14.2 million square feet, of which 0.4 million square feet relates to 37.9 acres held for sale. As of September 30, 2018, the Company also owned interests in unconsolidated real estate ventures (see Note 4, “Investment in Unconsolidated Real Estate Ventures,” for further information). The Properties and the properties owned by the Real Estate Ventures are located in or near Philadelphia, Pennsylvania; Metropolitan Washington, D.C.; Southern New Jersey; Wilmington, Delaware and Austin, Texas.

The Company conducts its third-party real estate management services business primarily through wholly-owned management company subsidiaries. As of September 30, 2018, the management company subsidiaries were managing properties containing an aggregate of approximately 25.3 million net rentable square feet, of which approximately 16.5 million net rentable square feet related to Properties owned by the Company and approximately 8.8 million net rentable square feet related to properties owned by third parties and Real Estate Ventures.

Unless otherwise indicated, all references in this Form 10-Q to square feet represent net rentable area.