Sotheby’s International Realty
The Sotheby’s Auction House founded in 1744 has gained renown as the marketer of the world’s most valuable and prestigious possessions. In 1976 Sotheby’s International Realty (SIR) was established to provide real estate companies with a powerful marketing and referral program for luxury listings.
SIR is the #1 most profiled real estate brand in the world! The SIR network is comprised of more than 16,570 sales associates in approximately 760 offices located in 60 countries and territories worldwide.
Gibson Sotheby's International Realty is the #1 Massachusetts-based real estate firm by sales volume, with 34 offices and more than 700 sales associates serving Boston, Greater Boston, MetroWest, the North Shore, South Shore, South Coast, Cape Cod, Nantucket, Rhode Island, and Coastal New Hampshire. Founded in 1962, Gibson Sotheby's International Realty is regarded for its local expertise, innovative technology, exclusive media partnerships, and brand heritage and reputation. Our affiliation with Sotheby's International Realty® grants us exclusive access to a global clientele through a network of more than 1,100 offices in 86 countries and territories. Independently owned and operated.