DuPont-Guest Estate

DuPont-Guest Estate
U.S. National Register of Historic Places
South façade with the front entrance
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Location	South side of Northern Blvd. between Cotillion Ct. & DuPont Ct., Brookville, New York
Coordinates	40°48′32.31″N 73°36′53.23″W / 40.8089750°N 73.6147861°W / 40.8089750; -73.6147861
Area	44.24 acres (17.90 ha)
Built	1916
Architect	Carrère and Hastings
Architectural style	Georgian Revival
NRHP reference No.	09001084[1]
Added to NRHP	December 11, 2009

The DuPont-Guest Estate, now known as the NYIT de Seversky Mansion, is a historic estate located at Brookville in Nassau County, New York. Since 1972, it has been part of the Old Westbury campus of the New York Institute of Technology (NYIT).