Boston Properties, Inc. is a real estate investment trust. The Company is an owner and developer of office properties in the United States. Its segments by geographic area are Boston, New York, San Francisco and Washington, DC. Its segments by property type include Office, Residential and Hotel. As of December 31, 2016, the Company owned or had interests in 174 commercial real estate properties, aggregating approximately 47.7 million net rentable square feet of primarily Class A office properties, including eight properties under construction/redevelopment totaling approximately 4.0 million net rentable square feet. As of December 31, 2016, its properties consisted of 164 Office properties (including six properties under construction/redevelopment); one hotel; five retail properties, and four residential properties (including two under construction). Its tenant base includes sectors, such as media technology, legal services, government/public administration and retail.