One Sotheby’s International Realty is expanding to the Northeast with an acquisition in New Jersey.
The Coconut Grove-based brokerage led by CEO Daniel de la Vega is bringing in Callaway Henderson Sotheby’s International Realty along with its 135 agents, according to a press release. Callaway Henderson closed nearly $800 million in sales in 2025, the release shows. It ranks as the top firm in Mercer County and is active in Somerset, Hunterdon and Middlesex counties and Bucks County, Pennsylvania, as well.
John T. Henderson Sr. founded the firm in Princeton in 1953 and merged with Pete Callaway’s 1974-founded N.T. Callaway Real Estate in 2012. Today, the brokerage is led by Jud Henderson, Matt Henderson and Jane Henderson Kenyon, the release said.
As part of the acquisition, One Sotheby’s has tapped Aileen Konzelmann as the New Jersey brokerage president, the release shows. She joins the firm from Weichert Premier, where she was a managing broker for more than a decade.
The news follows a recent succession announcement at One Sotheby’s International Realty. Mayi de la Vega founded the brokerage in 2008, and this January became executive chair and passed the baton to her son, Daniel de la Vega. He is now CEO.
One Sotheby’s has been actively acquiring brokerages and agent teams in recent years, and Daniel de la Vega pointed to out-of-state ambitions as he assumed the role.
“We will be working on some acquisitions outside of Florida. Inside of Florida I see 50 percent of growth coming from agent production and the other 50 percent from mergers and acquisitions,” he told The Real Deal in January.
Other growth efforts in recent months include the December relaunch of One Sotheby’s sports and entertainment division, which targets celebrities and athletes with services tailored to high-profile clients.
Sotheby’s is under the Anywhere Real Estate umbrella of brokerage brands, along with Corcoran Group and Coldwell Banker Realty. In January, Compass closed on its mega merger with Anywhere in a deal valued at about $4.2 billion.
