Exhibit 21
	Entity Name		State of Organization
	WRIT Limited Partnership		Delaware
	Real Estate Management, Inc.		Maryland
	Washington Parking, Inc.		Maryland
	WRIT Dulles Station, LLC		Delaware
	Washington Metro, Inc.		Maryland
	Cascade/Maryland Properties LLC		Washington
	Munson Hill Towers, L.L.C.		Virginia
	WRIT Frederick Crossing Land, LLC		Delaware
	WRIT Frederick Crossing Lease, LLC		Delaware
	WRIT Frederick Crossing Associates, Inc.		Maryland
	Frederick Crossing Associates, L.C.		Virginia
	Frederick Crossing Retail Associates, L.C.		Virginia
	SME Rock, LLC		Delaware
	SYN-Rock, LLC		Maryland
	Trade Rock, LLC		Delaware
	SME Rock Manager, Inc.		Delaware
	SYN-Rock Manager, Inc.		Delaware
	Trade Rock Manager, Inc.		Delaware
	WRIT-Kenmore, LLC		Delaware
	WRIT-2445 M, LLC		Delaware
	WRIT GATEWAY OVERLOOK LLC		Delaware
	WRIT 1140 CT LLC		Delaware
	WRIT 1227 25th Street LLC		Delaware
	650 N. Glebe, LLC		Delaware
	WRIT Crimson On Glebe Member LLC		Delaware
	WRIT Olney Village Center LLC		Delaware
	WRIT Braddock Office LLC		Delaware
	WRIT 8283 Greensboro Drive LLC		Delaware
	WRIT Braddock Gateway LLC		Delaware
	Braddock Gateway, LLC		Delaware
	WRIT Fairgate LLC		Delaware
	WRIT Yale West LLC		Delaware
	WRIT Paramount LLC		Delaware
	WRIT ANC LLC		Delaware
	WRIT 1775 EYE STREET LLC		Delaware
	WRIT SPRING VALLEY LLC		Delaware