|Washington Real Estate Investment Trust (WRIT) is a self-administered, self-managed, real estate investment trust (REIT). WRIT's business consists of the ownership and operation of income-producing real property in the greater Washington metro region. It owns a diversified portfolio of office buildings, medical office buildings, multifamily buildings and retail centers. As of December 31, 2012, it owned a diversified portfolio of 70 properties, totaling approximately 8.6 million square feet of commercial space and 2,540 residential units, and land held for development. These 70 properties consist of 26 office properties, 17 medical office properties, 16 retail centers and 11 multifamily properties. In September 2012, it sold 1700 Research Boulevard. In March 2013, it sold of The Atrium Building, an 80,000 square foot office building located in Rockville, Maryland. In October 2013, it acquired The Paramount, an apartment building with 135 units and 3,600 square feet of retail space.