Sotheby’s International Realty Inc. has acquired South Florida powerhouse ONE Sotheby’s International Realty and TTR Sotheby’s International Realty, which serves the Washington, D.C. area. 

Financial terms for the franchise takeovers were not disclosed.

The acquisitions are in keeping with Sotheby’s International’s “two-pronged” strategy to grow the brand through both company-owned brokerages and independent franchises, according to an announcement.

“This is a strategic investment in the strength of Sotheby’s International Realty and in the visionaries who represent our brand,” Sotheby’s International President and CEO Philip White said . “ONE Sotheby’s International Realty has built a high-performing businesses grounded in strong leadership, deep market expertise and an unwavering commitment to their clients.”

The franchises will retain their current leadership as units of the corporate parent. Agents will have access to new technological, marketing and networking resources and enjoy expanded referral channels through Sotheby’s International’s other markets, which include New York, Denver, Houston, Los Angeles and Park City, Utah. 

“Our focus has always been to cultivate an environment where our advisors have every resource they need to deliver the highest level of service to their clients,” ONE Sotheby’s President and CEO Daniel de la Vega said. “Aligning with Sotheby’s International Realty Inc. strengthens this foundation by providing our team with direct access to world-class tools and elevated international reach without compromising the boutique feel, agility and hyper-local expertise that define who we are.”

With 1,375 agents, ONE Sotheby’s closed $6.85 billion in sales in 5,257 transactions in 2025, according to T3 Sixty’s Mega 1000 rankings. TTR, meanwhile, closed $5.71 billion in sales in 4,211 transactions with 548 agents.