{"nrhp_refnum":"76001286","name":"Platt-Cady Mansion","other_names":["George P. &amp","Susan Platt Cady Library"],"category":"building","location":{"address":"18 River St.","address_restricted":false,"city":"Nichols","county":"Tioga County","state":"NY","lat":42.021995606000075,"lon":-76.36633220499994,"geom_source":"nps_gis"},"listed_date":"1976-08-13","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story brick mansion with a rear carriage house/barn at 18 River Street in the village of Nichols, Tioga County, New York, built sometime after 1827 by Nemeniah Platt. It now serves as the town library.","why_significant":"The nomination presents it as a fine example of a Greek Revival country residence in upstate New York, with Egyptian-influenced column capitals and a monumental portico. It was also the home of the Platt and Cady families, among the village's leading families, until the town acquired it for a library.","narrative":"Set behind an ornamental iron fence on River Street in Nichols, this two-story brick mansion is described as the most imposing building in the village. Nemeniah Platt, son of local settler Major Platt, built it sometime after 1827. A six-columned, two-story portico dominates the five-bay front, and its capitals resemble bundled stalks, reflecting the American interest in Egyptian forms around 1830. Inside, a cherry staircase, stained glass, black marble fireplaces and quartered oak wainscoting remain. A board-and-batten carriage house with a gambrel roof stands at the rear. Dr. George P. Cady married Platt's daughter Susan and acquired the home about 1855. After Cady's son died in 1935, his estate passed to the town, and the library moved in after the estate was settled in 1941. The building is valued as a sophisticated upstate example of Greek Revival design and as a long-standing community landmark.","period_of_significance":"1800-1899","architect_builder":null,"architectural_style":"Greek Revival with Egyptian Revival elements","criteria":[],"status_note":"Used as a library on the first floor, with an apartment on the second floor; also serves as a center for town government. Condition listed as good.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.284468-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/76001286.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76001286/9c7671de95-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76001286/9c7671de95-1600.webp","licence":"CC BY-SA 2.0","author":"Doug Kerr from Albany, NY, United States","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Platt-Cady_Mansion_Oct_09.jpg\" rel=\"noopener\">Doug Kerr from Albany, NY, United States</a>, <a href=\"https://creativecommons.org/licenses/by-sa/2.0\" rel=\"license noopener\">CC BY-SA 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Platt-Cady_Mansion_Oct_09.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75322451","wikipedia":"https://en.wikipedia.org/wiki/Platt-Cady_Mansion","wikidata":"https://www.wikidata.org/wiki/Q7202461"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/tioga-county/platt-cady-mansion-76001286/"}