| Henry T. Sloane House | |
|---|---|
 The main facade on 72nd Street | |
 | |
| Alternative names | 9 East 72nd Street |
| General information | |
| Type | Mansion |
| Architectural style | Beaux-Arts |
| Address | 9 East 72nd Street |
| Town or city | Manhattan, New York |
| Country | United States |
| Coordinates | 40°46′20″N 73°57′58″W / 40.77222°N 73.96611°W |
| Construction started | 1894 |
| Completed | 1896 |
| Client | Henry T. Sloane |
| Owner | Government of Qatar |
| Technical details | |
| Floor count | 5 |
| Floor area | 45,000 square feet (4,200 m2) (with 7 East 72nd Street) |
| Design and construction | |
| Architect(s) | Carrère and Hastings |
The Henry T. Sloane House is a mansion at 9 East 72nd Street on the Upper East Side of Manhattan in New York City. It is along 72nd Street's northern sidewalk between Fifth Avenue and Madison Avenue. The five-story building was designed by Carrère and Hastings in the French Beaux-Arts style, and was built from 1894 to 1896. The house, along with the neighboring structure at 7 East 72nd Street, has been owned since 2002 by the government of Qatar, which has combined the two buildings into a single residence.
The limestone facade is divided vertically into four bays and rises four stories from the street. The facade includes rusticated limestone blocks on the first story, a colonnade of Ionic columns on the second and third stories, and a mansard roof on the fourth story. The house originally spanned 25,363 square feet (2,356.3 m2), with various living spaces on the second floor and bedrooms on the upper stories. After 7 and 9 East 72nd Street were combined, the residence included a swimming pool and a roof terrace.
The building was originally constructed for the family of Henry T. Sloane, son of the founder of the carpet firm W. & J. Sloane. Following an acrimonious divorce, Sloane abandoned the house in 1899, and the family of Joseph Pulitzer rented it the next year. In 1901, it was purchased by the banker James Stillman, who lived there until his death in 1918. The house was then occupied by the carpet manufacturer John Sanford and then by the Riker family. The Lycée Français de New York, which already occupied the neighboring mansion at 7 East 72nd Street, moved into the house in 1964. The house became a New York City designated landmark in 1977. The school vacated 7 and 9 East 72nd Street in 2002, when they were sold to Hamad bin Khalifa Al Thani, the Emir of Qatar. After the Qatari government finished renovating and combining the buildings in 2010, the two structures comprised New York City's largest single-family residence.