Cock-Cornelius House

Cock-Cornelius House
U.S. National Register of Historic Places
Cook-Cornelius House, November 2019
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Location	34 Birch Hill Rd., Locust Valley, New York
Coordinates	40°52′27″N73°35′17″W / 40.87417°N 73.58806°W / 40.87417; -73.58806
Area	2.2 acres (0.89 ha)
Built	c. 1668
Architectural style	Federal
NRHP reference No.	06000157 [1]
Added to NRHP	March 22, 2006

Cock-Cornelius House, also known as Wyckoff-Underhill House, is a historic home located at Locust Valley in Nassau County, New York. It is a 1- to 2+1⁄2-story, U-shaped wood-frame dwelling sheathed in wood shingles. The main block is 2+1⁄2 stories and five bays wide. Local lore suggests the home was built circa 1668, however this has been hard to explicitly confirm. ^[2] The oldest section of the house to be successfully dated is said to be from the Federal period, about 1790. The house was later expanded in the 1840s and in the 1920s-1930s. ^[3]

It was listed on the National Register of Historic Places in 2006. ^[1]

References

1. "National Register Information System". National Register of Historic Places . National Park Service. March 13, 2009.
2. Department of the Interior. National Park Service. (03/02/1934 - ). New York SP Cock--Cornelius House. Records of the National Park Service.
3. Karen Kennedy and Sarah Apmann (November 2005). National Register of Historic Places Registration: New York SP Cock--Cornelius House. National Archives and Records Administration. Retrieved November 9, 2025. (Downloading may be slow.)