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The Off-Market Purchase of Halcyon House in Georgetown Surpasses the Previous Record of US$ 25 Million, Repositions the Top of the Residential Market in Washington, and Reinforces the Historical Weight of High-End Properties
The most historic mansion in Washington, D.C., set a real estate record by being purchased for US$ 28 million by billionaire investor Josh Harris, owner of the Washington Commanders, becoming the most expensive house ever sold in the U.S. capital in an off-market transaction.
Record Transaction Redefines the Residential Market of the Capital
The purchase was revealed by the Wall Street Journal and surpassed the city’s previous record, set in 2024, when Bret Baier sold his castle-inspired residence for US$ 25 million.
The transaction consolidates Halcyon House as the largest residential sale ever recorded in Washington, D.C., expanding the historical gap between high-end properties traded in the federal capital.
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He sold his share for R$ 4 thousand, saw the company become a giant worth R$ 19 trillion, and missed the opportunity of a lifetime.
Located in Georgetown, an area traditionally associated with luxury real estate and political relevance, the mansion stands out not only for its value but also for its institutional history.
The Mansion is a 1787 Construction Linked to the Beginning of the American Government
Halcyon House was built in 1787 for Benjamin Stoddert, the first Secretary of the Navy of the United States, and retains characteristics of the federal style.
Over the years, the residence has undergone renovations estimated at US$ 12 million, focusing on restoring elements from the 19th century, including the exposed brick façade.
The property is listed on the National Register of Historic Places and occupies a half-acre lot with a direct view of the Potomac River.
With 2,787 square meters, the property features 12 bedrooms, 22 bathrooms, a pool, and gardens designed by Pierre L’Enfant, who was responsible for Washington’s urban layout.
Illustrious Residents and Recent Institutional Use
The mansion has hosted figures such as Albert Clemens, a nephew of Mark Twain, and architect Edmund Dreyfuss, who later left the property to his son John Dreyfuss.
In 2011, philanthropist Sachiko Kunō acquired the house for 11 million dollars, transforming it into the headquarters of Halcyon.
The nonprofit organization focuses on funding startups aimed at climate technology, health, and equity, utilizing the mansion as an institutional space.
Plans of the New Owner Family of the Mansion
Josh Harris and his wife, Marjorie Harris, intend to convert the 239-year-old building into a single-family residence, preserving its historical relevance.
The investor has already conducted a similar operation in 2017, when he purchased the Dommerich Mansion in New York for US$ 52 million, reverting its institutional use.
Currently, the couple’s primary residence remains in Miami, Florida, where records indicate ownership of a house in the North Bay Road neighborhood, reinforcing a high-value real estate portfolio and a discreet profile, despite the symbolic impact of this historic acquisition.
With information from Architectural Digest.
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