{"nrhp_refnum":"97000826","name":"Ludlow, William Henry, House","other_names":[],"category":"building","location":{"address":"465 NY 23B","address_restricted":false,"city":"Claverack","county":"Columbia County","state":"NY","lat":42.22490341100007,"lon":-73.74560079699995,"geom_source":"nps_gis"},"listed_date":"1997-08-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-and-one-half-story Georgian brick dwelling at 465 NYS Route 23B in the center of the hamlet of Claverack, Columbia County, New York, built in 1786 for grain merchant William Henry Ludlow. The four-acre property also includes outbuildings, gate posts and a turnpike mile marker.","why_significant":"The house is presented as an outstanding regional example of late Georgian architecture in the Hudson River Valley. It keeps its original form, floor plan, mantels, doors and hardware to a remarkable degree. It is also tied to the Ludlow family, among the community's most influential, and recalls the early development of Claverack.","narrative":"Built in 1786 for grain merchant William Henry Ludlow, this brick house at 465 Route 23B stands in the center of Claverack, set close to the former Columbia Turnpike. It is a five-bay, two-and-one-half-story Georgian dwelling with a gambrel roof, raised stone-and-brick foundation and a classically inspired entrance topped by a Palladian window. Dutch-style doors and a native stone foundation give it a vernacular touch. Inside, a broad central hall is flanked by two rooms on each side, and the original staircase, plaster walls, wide plank floors and mantels survive. The four-acre property also holds a stone summer kitchen and smokehouse, a root cellar, stone gate posts and a turnpike mile marker reading \"Mile 3 from Hudson.\" Ludlow was a prosperous merchant and civic figure, and visitors included Governor John Jay. Later descendants included Robert Fulton Ludlow, who set up a Fulton Museum in the front parlor. The house is valued for its architecture and its exceptional integrity.","period_of_significance":"1786 - ca.1803","architect_builder":null,"architectural_style":"COLONIAL/Georgian","criteria":["C"],"status_note":"Used as a single dwelling, as it was historically; the form describes it as remarkably intact, with very little done to disturb its architectural integrity.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:50.921647-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/97000826.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/97000826/b64ade89b2-800.webp","url_1600":"https://nationalhistoricalregister.com/media/97000826/b64ade89b2-1600.webp","licence":"CC BY-SA 3.0","author":"John S. Hirth","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:William_Henry_Ludlow_house,_Claverack,_Columbia_County,_NY,_USA.jpg\" rel=\"noopener\">John S. Hirth</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:William_Henry_Ludlow_house,_Claverack,_Columbia_County,_NY,_USA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75312389","wikipedia":"https://en.wikipedia.org/wiki/William_Henry_Ludlow_House","wikidata":"https://www.wikidata.org/wiki/Q8012086"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/columbia-county/ludlow-william-henry-house-97000826/"}