Boston Properties NYSEBXP is the largest publiclyheld developer and owner of Class A office properties in the United States concentrated in five markets Boston Los Angeles New York San Francisco and Washington DC The Company is a fully integrated real estate company organized as a real estate investment trust REIT that develops manages operates acquires and owns a diverse portfolio of primarily Class A office space The Companys portfolio totals 512 million square feet and 196 properties including six properties under constructionredevelopment