{"nrhp_refnum":"06001144","name":"Sloat, Jacob, House","other_names":["Harmony House"],"category":"building","location":{"address":"15 Liberty Rock Rd.","address_restricted":false,"city":"Village of Sloatsburg","county":"Rockland County","state":"NY","lat":41.15545809200006,"lon":-74.19481285099994,"geom_source":"nps_gis"},"listed_date":"2006-12-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Industry"],"significance_levels":["local"],"summary":{"what_it_is":"A frame house in the Village of Sloatsburg, Rockland County, New York, built between 1846 and 1848 for Jacob Sloat and known as Harmony Hall, combining Greek Revival and Italian villa influences.","why_significant":"The house is significant as a well-preserved mid-19th-century residence of Jacob Sloat, a leading manufacturer and inventor in Sloatsburg. It retains most of its original plan and interior finishes, reflecting the transition from Greek Revival to Italianate styles. Its history is tied to the Sloat cotton twine mills and to the village that took the family name.","narrative":"Harmony Hall, the Jacob Sloat House, is a frame dwelling at 15 Liberty Rock Road in the Village of Sloatsburg, Rockland County, New York. Built between 1846 and 1848, it has a three-story, front-gabled center section flanked by lower two-story wings, set on a granite foundation. The exterior follows late Greek Revival lines, with a full-length verandah supported by square piers, while the interior shows early Italianate and Picturesque features such as plaster cornices, foliate ceiling medallions, marble mantels and a curving stair with turned balusters. Aluminum siding and later additions have altered the outside, but the original plan and most interior finishes survive. Jacob Sloat was a self-made mechanic and manufacturer who ran cotton twine mills in the village that bears his family name, and who is credited with inventing a conically cut wood screw. The house later served non-residential uses, including restaurants, and is now vacant and owned by the Town of Ramapo.","period_of_significance":null,"architect_builder":null,"architectural_style":"Mid 19th Century: Greek Revival, Italian villa","criteria":[],"status_note":"Current function listed as vacant; aluminum siding covers the original exterior and the property was recently acquired by the Town of Ramapo.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:53.731922-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/06001144.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/06001144/becd622356-800.webp","url_1600":"https://nationalhistoricalregister.com/media/06001144/becd622356-1600.webp","licence":"Public domain","author":"AnonymousUnknown author","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Jacob_Sloat_House_-_c1900.jpg\" rel=\"noopener\">AnonymousUnknown author</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Jacob_Sloat_House_-_c1900.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75321504","wikipedia":"https://en.wikipedia.org/wiki/Jacob_Sloat_House","wikidata":"https://www.wikidata.org/wiki/Q6119282"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/rockland-county/sloat-jacob-house-06001144/"}