The house has been on and off the market since 2019 when it was listed for $9 million.
The real estate firm said the contract was signed but did not disclosed the name of the buyer.
The 5,997-square-foot home was built in 1907 as a summer residence for architect Alexander Buel Trowbridge. It later became the home of composer and bandleader John Philip Sousa from 1915 until his death in 1932. During this time, the house was known as “Wildbank.”
As the conductor of the U.S. Marine Band and the composer of marches, Sousa famously elevated wind ensembles and marching bands’ popularity. Much of his work is still considered standard band literature.
Sousa is also the namesake of John Philip Sousa Elementary School in Port Washington. The house was designated a National Historic Landmark in 1966.
“John Philip Sousa, the March King, won international acclaim in his own lifetime as both a composer and band director of note,” the landmark nomination form says. “Although best remembered for his famous march tunes such as, ‘The Stars and Stripes Forever,’ and as the director of the U.S. Marine Band and his own orchestras, he elevated the marching band to new heights of artistic as well as commercial success.”
Resting on 2.6 acres, the home has eight bedrooms and seven bathrooms. The property also includes extensive gardens, a gatehouse, a tennis court and other amenities.
“Most extraordinary waterfront estate with western facing sunsets and views of NYC Skyline, your own sandy beach and dock,” the listing says. “[It] will take your breath away.”