{"nrhp_refnum":"76001284","name":"Sagtikos Manor","other_names":[],"category":"building","location":{"address":"Montauk Hwy. (NY 27A)","address_restricted":false,"city":"West Bay Shore","county":"Suffolk County","state":"NY","lat":40.703053965000066,"lon":-73.27622122855418,"geom_source":"nps_gis"},"listed_date":"1976-11-21","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Social History"],"significance_levels":["state"],"summary":{"what_it_is":"Sagtikos Manor is a large, rambling frame manor house with outbuildings on a ten-acre plot on Montauk Highway in West Bay Shore, Suffolk County, New York. Its oldest part dates to the late seventeenth century, with major additions in the mid-1700s and about 1905.","why_significant":"The nomination cites its associations with the prominent Carle, Thompson, and Gardiner families of Long Island and its architectural quality. It illustrates estate life and architecture at the turn of the century, when architect Isaac Green redesigned the house in the colonial revival style for Frederick Diodati Thompson. It also shows the periodic expansion of a house over more than two centuries of use by related families.","narrative":"Sagtikos Manor is a sprawling frame house in West Bay Shore, Suffolk County, set on ten acres along Montauk Highway. It began in 1697 as part of a royal patent granted to Stephanus Van Cortlandt, and its oldest section, a one-and-one-half-story timber-framed building, is thought to date from the late seventeenth century. Around the middle of the eighteenth century the Thompson family added a five-bay east wing with a center hall, whose parlor keeps its painted wood paneling. Judge Isaac Thompson, a magistrate, militia organizer and assemblyman, lived here, and British officers and George Washington are recorded as visitors. About 1902 Frederick Diodati Thompson hired Sayville architect Isaac Green, who extended the east wing and added a gambrel-roofed north house in the colonial revival style. The grounds include a carriage house, walled garden and buttery. Its long family ownership and layered growth account for its listing. It operates as a museum.","period_of_significance":null,"architect_builder":"Isaac Green (20th C. additions)","architectural_style":"Colonial revival (early twentieth-century additions to an earlier house)","criteria":[],"status_note":"Occupied and operated as a museum open to the public on a regular seasonal basis; the owner has offered it to Suffolk County, which was studying the proposal.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.714773-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/76001284.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76001284/f68e7d61e1-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76001284/f68e7d61e1-1600.webp","licence":"CC BY-SA 3.0","author":"DanTD","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Sagtikos_Manor_from_Driveway.JPG\" rel=\"noopener\">DanTD</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Sagtikos_Manor_from_Driveway.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75322230","wikipedia":"https://en.wikipedia.org/wiki/Sagtikos_Manor","wikidata":"https://www.wikidata.org/wiki/Q7399375"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/sagtikos-manor-76001284/"}