{"nrhp_refnum":"87001372","name":"Carman, Cornelius, House","other_names":[],"category":"building","location":{"address":"River Rd. S.","address_restricted":false,"city":"Chelsea","county":"Dutchess County","state":"NY","lat":41.54996898600004,"lon":-73.97021504455923,"geom_source":"nps_gis"},"listed_date":"1987-12-30","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Transportation","Architecture","Maritime History"],"significance_levels":["local"],"summary":{"what_it_is":"A one-and-one-half story frame house built about 1835 on River Road South in the hamlet of Chelsea, town of Wappinger, Dutchess County, New York, on roughly ten acres near the Hudson River. It was built for Cornelius Carman, a Hudson River boat builder.","why_significant":"The house is presented as an outstanding, late example of a vernacular farmhouse type that developed in western Dutchess County in the Federal period, blending Dutch and English tastes and showing the shift from Federal to Greek Revival style. It is also significant for its link to Cornelius Carman, a Hudson River boat builder who built the river's first steam ferry in 1828 and is credited with introducing the movable centerboard on Hudson sloops.","narrative":"Built around 1835 on River Road South in the hamlet of Chelsea, this one-and-one-half story clapboard house sits on a raised stone basement and has a five-bay west facade with a central entrance, sidelights and transom, and a Doric portico. Pairs of brick chimneys and tripartite windows flanked by quarter-round lights mark the gable ends, and the roofline mixes a Federal cornice with a Greek Revival frieze. A shed-roofed rear extension, borrowed from New England practice, and a center-passage plan set it apart from similar local houses. Later wings were added on the sides and rear. The house was built for Cornelius Carman, a Hudson River boat builder who operated a shipyard in Chelsea. He built sloops, barges and steamers, including the river's first steam ferry in 1828, and is credited with introducing the movable centerboard on Hudson sloops. The house is valued as a late example of a regional Dutch-influenced farmhouse type and as a reminder of Carman's maritime career.","period_of_significance":null,"architect_builder":null,"architectural_style":"Vernacular Federal to Greek Revival transitional","criteria":[],"status_note":"Used as a residence, in good condition; original site, with side wings added c1870, a rear addition c1900 and window heads altered c1980.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:45.382298-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/87001372.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/87001372/e402e7f2c0-800.webp","url_1600":"https://nationalhistoricalregister.com/media/87001372/e402e7f2c0-1600.webp","licence":"CC BY-SA 3.0","author":"Daniel Case","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Cornelius_Carman_House,_Chelsea,_NY.jpg\" rel=\"noopener\">Daniel Case</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:Cornelius_Carman_House,_Chelsea,_NY.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75312672","wikipedia":"https://en.wikipedia.org/wiki/Cornelius_Carman_House","wikidata":"https://www.wikidata.org/wiki/Q5171320"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/dutchess-county/carman-cornelius-house-87001372/"}