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Gibson Sotheby's International Realty Acquires Unlimited Sotheby's International Realty

#1 Massachusetts-Based Brokerage’s Growth Continues in Greater Boston

Boston, Massachusetts (January 30, 2024)Gibson Sotheby's International Realty is pleased to announce its growth in the Greater Boston market with the addition of Unlimited Sotheby's International Realty.   

As part of Gibson Sotheby's International Realty's mission to expand its footprint across Boston’s metropolitan area, the brokerage will onboard Unlimited Sotheby’s International Realty’s principal brokers Margie Kern, Scott Goldsmith, Jon Ufland and Chuck Silverston and 60 sales associates in three offices in Brookline, Newton and Boston’s Jamaica Plain neighborhood. Kern, Goldsmith, Ufland and Silverston will continue to practice as broker associates. 

"In spite of market fluctuations, Gibson Sotheby’s International Realty continues to grow and lead the industry with stability and expertise,” says Colleen Barry, Chief Executive Officer of Gibson Sotheby’s International Realty. “Unlimited Sotheby’s International Realty brings an incredibly talented group of agents. With our best-in-class marketing, technology tools and resources, and widespread market share, I am confident we can elevate their success and help them outperform the market.” 

“Our established strongholds in Boston, Cambridge, and the MetroWest make this alliance a natural fit,” adds Nicole Rideout Hartwick, Chief Strategy Officer of Gibson Sotheby’s International Realty. “This acquisition cements our presence in these markets and, as one company, allows us to more effectively access important international markets and harness the prestige of the Sotheby’s International Realty® brand.”

Founded in 1999, Unlimited Sotheby’s International Realty is an independently owned and operated franchisee of Sotheby's International Realty® specializing in the Brookline, Jamaica Plain, Newton, and Cambridge markets. The firm achieved a sales volume of more than $327 million in 2023.

“We are thrilled to join forces with Gibson Sotheby's International Realty under the leadership of Larry Rideout and Paul McGann,” says Scott Goldsmith, Managing Member of Unlimited Sotheby's International Realty. “Our agents and staff are the heart of our success, and our mutual affiliation with Sotheby's International Realty®, the most trusted and recognized real estate brand in the world, allows us to continue delivering unmatched client service. There is now a clear sales and marketing leader in Eastern Massachusetts with a strong culture of support, and we're excited for the opportunities ahead.”

Gibson Sotheby’s International Realty reported it achieved $3 billion in sales volume in 2023, making it the #1 Massachusetts-based real estate firm by sales volume. It holds an average sale price of over $1.25 million, the highest of the top twenty real estate firms statewide. 

For more information, contact Gibson Sotheby’s International Realty at 617.426.6900 or



About Gibson Sotheby’s International Realty

Gibson Sotheby’s International Realty is Eastern Massachusetts’ premier real estate brokerage firm with 30 offices and more than 500 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 helmed by  Larry Rideout and Paul McGann and offers a world of advantages to buyers and sellers, including hyperlocal expertise, exclusive media partnerships, and a reputation for white-glove service. The brokerage’s direct affiliation with Sotheby's and Sotheby's International Realty® offers the company unparalleled global reach through a network of 1,100 offices in 83 countries and territories. Gibson Sotheby's International Realty is the largest Massachusetts-based, independently-owned brokerage. For more information, visit

About Sotheby’s International Realty®

Sotheby's International Realty was founded in 1976 as a real estate service for discerning clients of Sotheby's auction house. Today, the company's global footprint spans more than 1,100 offices located in 83 countries and territories worldwide, including 50 company-owned brokerage offices in key metropolitan and resort markets. In February 2004, Anywhere Real Estate Inc. entered a long-term strategic alliance with Sotheby's, the operator of the auction house. The agreement provided for the licensing of the Sotheby's International Realty name and the development of a franchise system. The franchise system is comprised of an affiliate network, where each office is independently owned and operated. Sotheby's International Realty supports its affiliates and agents with a host of operational, marketing, recruiting, educational and business development resources. Affiliates and agents also benefit from an association with the venerable Sotheby's auction house, established in 1744. For more information, visit

The affiliate network is operated by Sotheby's International Realty Affiliates LLC, and the company owned brokerages are operated by Sotheby's International Realty, Inc.  Both entities are subsidiaries of Anywhere Real Estate Inc. (NYSE: HOUS) a global leader in real estate franchising and provider of real estate brokerage, relocation and settlement services. Both Sotheby's International Realty Affiliates LLC and Sotheby's International Realty, Inc. fully support the principles of the Fair Housing Act and the Equal Opportunity Act.

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