Mayi de la Vega and Daniel de la Vega of ONE Sotheby’s International Realty Expand Footprint to Northeast with Acquisition of Callaway Henderson Sotheby’s International Realty
(PRINCETON, NJ – MAY 14, 2026) Mayi de la Vega and Daniel de la Vega, the leaders behind leading luxury brokerage ONE Sotheby’s International Realty, have announced their expansion into the New Jersey market through the acquisition of Callaway Henderson Sotheby’s International Realty. This milestone unites two of the most prestigious family-led affiliates within the global Sotheby’s International Realty network, creating a powerful corridor of luxury real estate expertise that stretches from Florida’s east coast to the Northeast.
A legacy firm with more than 80 years of operational experience, Callaway Henderson Sotheby’s International Realty is recognized as the #1 real estate brokerage in Mercer County by dollar volume, and is the #1 brokerage in Princeton as well as a leading presence across Somerset, Hunterdon, Bucks, and Middlesex counties, supported by a team of 135 of the most well-respected, top-performing agents in the region. They will continue to operate out of their primary offices in Princeton and Lambertville.
“The Callaway and Henderson families have built an exceptional business that has defined excellence in Central New Jersey through decades of leadership, integrity, and trusted market expertise,” said Daniel de la Vega, President and CEO of ONE Sotheby’s International Realty. “Their approach reflects the same values that guide our firm, and we look forward to supporting their continued growth while strengthening the incredible synergies between the Northeast and East Coast markets.”
Led by Judson (Jud) Henderson, Matt Henderson, and Jane Henderson Kenyon, Callaway Henderson Sotheby’s International Realty has long been recognized for its local insight, elevated client service, and a culture deeply rooted in heritage and community. “This represents a defining evolution for our family business, and an incredible opportunity for our brand’s future,” said Jud Henderson, Managing Member at Callaway Henderson Sotheby’s International Realty. “By working together with a like-minded, family-run company, we are creating a foundation that will serve our agents, employees, and clients for decades to come. We have always believed in the power of the Sotheby’s International Realty brand, and this partnership allows us to harness that platform while building meaningful synergies between our markets and elevating the way we serve our clients.”
Aileen Konzelmann has been appointed President of the New Jersey Brokerage for ONE Sotheby’s International Realty, where she will lead the firm’s strategic growth and expansion across the state. Konzelmann brings more than 30 years of leadership experience spanning luxury hospitality and residential real estate, including 23 years with Marriott International and most recently as Founder/Managing Broker for Weichert Premier’s Moorestown and Haddonfield offices. Under her leadership, the offices became top-performing operations within the company, earning multiple number one rankings in listings, sales, and revenue units.
Callaway Henderson Sotheby’s International Realty achieved nearly $800 million in closed sales in 2025, participating in 94% of all transactions above $3 million and all top 10 sales in Mercer County. The brokerage also holds the #1 market share across Princeton, Pennington Borough, Hopewell Borough and Township, Montgomery Township, and Stockton Borough. The firm's transaction portfolio spans a diverse range of properties from $70,000 residences to estates exceeding $5 million, underscoring the team’s reach across every price point.
The company’s multigenerational legacy began in 1953, when John T. Henderson Sr. opened his first office in Princeton. In 1974, N.T. Callaway Real Estate, founded by Pete Callaway, became another cornerstone of the region’s real estate landscape. After decades of thoughtful growth, the two family-run businesses joined forces in 2012 to form Callaway Henderson Sotheby’s International Realty—solidifying a reputation built on service and deep community roots.
ONE Sotheby’s International Realty
ONE Sotheby’s International Realty is the premier source for luxury real estate and development opportunities along Florida’s East Coast, with 30 offices spanning from Miami and Key Biscayne to Vero Beach and Jacksonville. For more than 250 years, the Sotheby’s name has exemplified the promise of a life well lived, and ONE Sotheby’s International Realty’s direct affiliation with Sotheby’s and Sotheby’s International Realty has offered the company unparalleled, global reach with a network of 26,000 associates in more than 86 countries and territories with more than 1,100 offices. The firm’s Development Division is a leader in luxury pre-construction sales and marketing along Florida’s East Coast, offering an insider perspective and superior market intelligence to help partners navigate the unique real estate landscape from pre-acquisition to sell-out.
onesothebysrealty.com
Callaway Henderson Sotheby's International Realty
Callaway Henderson Sotheby’s International Realty is central New Jersey’s premier real estate firm, combining the rich heritage and profound experience of two highly respected, family-owned companies. Our deeply rooted local expertise, commitment to superior service, and involvement in the communities we serve complements the powerful global network of Sotheby's International Realty—making us uniquely qualified to serve markets that are at once small and tight-knit, yet a magnet for the world's best and brightest. At Callaway Henderson Sotheby's International Realty, we believe luxury is an experience, not a price point, and the real estate experience we provide to each and every one of our clients is unrivaled.
As the exclusive local affiliate of the Sotheby’s International Realty network of 26,000 sales associates in 1,100 offices in 86 countries and territories worldwide, generating more than $180 billion in annual sales (USD), we serve Mercer, Middlesex, Somerset, Hunterdon, and Bucks Counties (and beyond) with offices in Princeton and Lambertville, New Jersey.
sothebysrealty.com/callawayhendersonsir/eng/local-experts
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