Sotheby’s International Realty, Inc. acquired ONE Sotheby’s International Realty and TTR Sotheby’s International Realty, bringing two of its largest affiliates under its company-owned brokerage, the company announced on Wednesday.
Financial terms of the transactions were not disclosed.
The deal adds company-owned coverage along Florida’s east coast, in Princeton and Lambertville, New Jersey, and across the Washington, D.C., metropolitan area, according to the announcement. Those regions join existing company-owned operations in New York City, Los Angeles, Houston, Denver and Park City, Utah.
The move fits Sotheby’s International Realty’s dual strategy of operating company-owned brokerages in core luxury hubs while maintaining a broader network of independently owned and operated affiliates worldwide. The brand, founded in 1976 as a real estate service for Sotheby’s auction clients, now has more than 1,100 offices in 86 countries and territories.
“This is a strategic investment in the strength of Sotheby’s International Realty and in the visionaries who represent our brand,” Philip White, president and CEO of Sotheby’s International Realty, said in the release. “ONE Sotheby’s International Realty and TTR Sotheby’s International Realty have built high-performing businesses grounded in strong leadership, deep market expertise and an unwavering commitment to their clients.”
White framed the acquisitions as targeting centers of influence that drive luxury housing demand and capital flows. “Mirroring New York’s role as the financial capital of the world; Florida is a cultural corridor, and Washington, D.C. is the political capital. Each reflects a gravitational center of influence,” he said.
In Florida, ONE Sotheby’s International Realty covers the state’s east coast, a market that has seen sustained in-migration, wealth transfers and second-home demand since the pandemic, especially in Miami, Fort Lauderdale and Palm Beach. In the Mid-Atlantic, TTR Sotheby’s International Realty is a major luxury player in the Washington, D.C. metro area, where housing markets are heavily influenced by federal employment, government contracting and global policy organizations.
The companies will retain their existing leadership teams under the new ownership, the firm said. ONE Sotheby’s International Realty founder and executive chair Mayi de la Vega said the transaction marks a new phase of growth for the Florida brokerage.
“Our vision was to create a brokerage defined by exceptional people, a strong culture and a shared commitment to excellence,” de la Vega said. “This milestone is a testament to our collective achievements and an exciting opportunity to build upon our success with an even greater platform for growth.”
Daniel de la Vega, president and CEO of ONE Sotheby’s International Realty, said that becoming company-owned should give agents more direct access to tools and reach.
On the D.C. side, TTR Sotheby’s International Realty executive chairman Mark Lowham said the deal is designed to broaden the firm’s footprint while raising service levels for clients and agents.
“By bringing together our respective strengths, we’re not only expanding our reach beyond the greater Washington, D.C., area, we’re elevating what’s possible in luxury real estate,” Lowham said. “Together, we are uniquely positioned to bring greater expertise, innovative technology, and an even higher level of service to our advisors and their clients, delivering exceptional results in an increasingly dynamic marketplace.”
Sotheby’s International Realty said advisors in the acquired firms will gain access to additional technology, marketing and networking resources, as well as expanded referral channels across “reciprocal” markets that commonly share buyers and sellers, such as New York, South Florida and Washington, D.C.
The company positioned the acquisitions as part of a broader effort to integrate technology with its global referral and auction-house networks.
The announcement comes during Sotheby’s International Realty’s 50th anniversary year. The brand operates nearly 170 company-owned brokerage offices in key metropolitan and resort markets across the United States, while its franchise affiliates remain independently owned and operated and receive operational, marketing, recruiting, education and business development support from the brand.
In 2025, ONE Sotheby’s International Realty closed 5,257 transaction sides totaling $6.85 billion in sales volume, according to RealTrends Verified data. This earned the firm the No. 26 ranking by volume and No. 83 ranking by sides in the nation in the 2026 RealTrends Verified rankings. TTR Sotheby’s International Realty closed 4,211 transaction sides in 2025 totaling $5.71 billion in sales volume, earning it the No. 39 ranking by volume and No. 122 ranking by sides in the 2026 RealTrends Verified rankings.
This article was generated using HousingWire Automation and reviewed by a HousingWire editor before publication.
