Carlson GMAC real estate is a subsidiary of Eastern Massachusetts Real Estate Inc. It operates as a real estate firm in New England. The company offers services including in-house marketing, mortgage and relocation to home buyers and sellers. This segment of business is done through affiliated brokers and national service providers. The company has headquarters in Woburn and has additional offices in southern New Hampshire. The single source concept for all related activities with innovative marketing and technology programs made Carlson a leader amongst the competitors. Carlson real estate network has more than 1250 agents and more than 60 locally managed real estate operations across central New England.