{"nrhp_refnum":"03000592","name":"Underhill, George, House","other_names":["Wayside"],"category":"building","location":{"address":"28 Factory Pond Rd.","address_restricted":false,"city":"Locust Valley","county":"Nassau County","state":"NY","lat":40.89606147600006,"lon":-73.57727563799995,"geom_source":"nps_gis"},"listed_date":"2003-07-05","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Exploration/Settlement"],"significance_levels":["local"],"summary":{"what_it_is":"A rambling 1- to 2-story wood-framed house at 28 Factory Pond Road in Locust Valley, Nassau County, New York, begun c1790 by George Underhill and enlarged in the 19th and 20th centuries. The 5.13-acre property also has a tenant house or cottage and a modern garage.","why_significant":"The nomination argues the house is significant under Criterion A for its link to the Underhill family, among the earliest settlers of the Matinecock area. Under Criterion C it represents late-18th and 19th century settlement and the evolution of vernacular residential design in northern Nassau County. The property keeps a high degree of integrity in its pastoral setting and its design.","narrative":"Beside a mill pond on Factory Pond Road in Locust Valley, this house began as a modest 1½-story farmhouse built about 1790 for George Underhill, a great-great-grandson of Captain John Underhill, who received land in the Matinecock area in 1667. A four-bay, two-story wing followed by about 1830, and connectors and a south wing were added in the mid-20th century. The result is a U-shaped plan unified by wood shingles and plain, unornamented volumes that may reflect the family's Quaker simplicity. Inside, the c1790 wing keeps wainscoting, board doors and wrought hardware, while the later wing shows Colonial Revival changes. A cottage, possibly a tenant house, and a modern garage stand on the 5.13-acre parcel of lawn and fields. The property was listed for its association with an early Matinecock settler family and as an example of vernacular house design evolving over nearly two centuries.","period_of_significance":"c1790","architect_builder":"unknown","architectural_style":"No Style","criteria":["A","C"],"status_note":"Used as a single dwelling, both historically and currently.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:54.129371-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/03000592.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319219","wikipedia":"https://en.wikipedia.org/wiki/George_Underhill_House","wikidata":"https://www.wikidata.org/wiki/Q5545394"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/nassau-county/underhill-george-house-03000592/"}