Washington Real Estate Investment Trust engages in the ownership and operation of income-producing real estate properties. It operates through the following segments: Office and Multifamily. The Office segment provides office space for various types of businesses and professions. The Multifamily segment provides rental housing for individuals and families throughout Washington metro region. The company was founded by Arthur A. Birney and Benjamin H. Dorsey in 1960 and is headquartered in Washington, DC.