|Location||Sweet Hollow Rd., West Hills, New York|
|Area||12.8 acres (5.2 ha)|
|Architectural style||Colonial Revival|
|MPS||Huntington Town MRA|
|NRHP reference #||85002527|
|Added to NRHP||September 26, 1985|
Halsey Estate-Tallwood is a historic home located at West Hills in Suffolk County, New York, known locally as "Tallwood" but more formally known as the "Halsey Estate". It was built in 1925 and is a symmetrically arranged, 22-bay shingled residence with a central block and a series of either gable or gambrel roofs and varies in height from 1 1⁄2 stories to 2 1⁄2 stories. The central 2 1⁄2-story block is five bays wide and has a gambrel roof. It is representative of the Colonial Revival style. Its builder, Richard Townley Haines Hawley, was a partner in Teff, Halsey and Company, brokers, and W. J. Sloane Company. It has been used since the 1970s as a children's day camp.
- National Park Service (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.
- NYS Parks & Recreation (n.d.). "National Register of Historic Places Registration: Halsey Estate / "Tallwood"". New York State Office of Parks, Recreation and Historic Preservation. Retrieved 2010-02-20.
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