Dowling Campus were set to be auctioned off. In 2018, the U.S. Bankruptcy Court in Central Islip approved the $14 million purchase of the site. by Mercury International LLC of Delaware, an affiliate of NCF Capital Ltd. which owes over $3 million dollars in back taxes to Suffolk County. Largest homes in America The 70,000 sq. ft. mansion is tied for the 15th largest house in the United States of America with Woodlea in Briarcliff Manor, New York (built for his sister Margaret and brother-in-law Elliott Fitch Shepard in 1895) and Lynnewood Hall in Elkins Park, Pennsylvania (built for Peter A. B. Widener in 1900). Gallery See also List of Gilded Age mansions References Notes Sources External links Idle Hour, Town of Islip, Suffolk County at Preservation Long Island The Gilded Age, The Vanderbilt's and Idle Hour video on YouTube. Vanderbilt family Vanderbilt family residences Palaces in the United States Dowling College Houses in Suffolk County, New York Residential buildings completed in 1901 Gilded Age mansions