About Sotheby's International Realty

The Sotheby’s International Realty®brand’s rich history goes back to 1744, when the revered Sotheby's Auction House was established. Sotheby's has been uniting collectors with world-class works of art for 270 years. As the oldest company listed on the New York Stock Exchange (BID), Sotheby's has maintained exclusive partnerships with the New York Times and the Wall Street Journal. In 1976, an exceptional real estate company was launched and created from the same passion that guides the auction house. 

The collaboration between realty and auction utilizes a combination of unique and exclusive marketing. Our commitment and culture to unparalleled quality has been in place since the inception of the brand over 270 years ago. Sotheby's International Realty stands for white-glove customer service, innovative global marketing and world-class representation, said Kelly Kassab.” SIR offers superior services to homes of all price points from remote beach house cottages to suburban homes and estates. A truly global company with a culture embraced by the heritage of the most recognized auction house in the world.


Auction House

Kelly Kassab - REALTOR® Hallmark Sotheby's International Realty
11 Grove St Hopkinton, MA 01748
Phone: 617-835-5533 URL of Map