{"nrhp_refnum":"89000426","name":"House at 145 South Ridge","other_names":["Hobart Welded Steel House"],"category":"building","location":{"address":"145 S. Ridge","address_restricted":false,"city":"Troy","county":"Miami County","state":"OH","lat":40.04359747700005,"lon":-84.21750160899995,"geom_source":"nps_gis"},"listed_date":"1989-05-25","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Engineering","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A two-story prefabricated welded steel house at 145 South Ridge in the Edgehill subdivision of Troy, Miami County, Ohio, built in 1941 by the Hobart Welded Steel House Co.","why_significant":"The house is one of 21 remaining Hobart steel houses in Troy and is entirely made of welded steel, including roof, walls, stairs and kitchen cabinets. It is a typical example of the Hobart Georgian Revival style with Moderne detailing. Although less than 50 years old at listing, it was justified as a continuation of the Hobart family's early 1930s steel housing venture.","narrative":"This two-story house at 145 South Ridge in Troy, Ohio, was built in 1941 by the Hobart Welded Steel House Co. and sold to its first owner in 1942. It was fabricated entirely of 18-gauge welded steel at the company's factory on West Main Street, then delivered by truck to a poured concrete foundation in the Edgehill subdivision. Roof, interior and exterior walls, stairs and even kitchen cabinets are steel. The three-bay facade has a central entrance hood decorated with welded steelwork and a circular window above it, and the walls hold 16-light casement windows. Its style is the Hobart Georgian Revival, a variation of Colonial Revival, with Moderne detailing. It is one of 21 remaining Hobart steel houses and one of 10 in Edgehill. Alterations have been minor, so it keeps its original design, construction method and material. It was listed for its architecture and for its place in the Hobart family's steel housing venture, which began in the early 1930s.","period_of_significance":null,"architect_builder":"Hobart Welded Steel House Co (designed and built by the Hobart brothers)","architectural_style":"Georgian Revival (Hobart variation of Colonial Revival) with Moderne detailing","criteria":["A","C"],"status_note":"Condition listed as excellent inside and outside; alterations described as minor. Used as a single-family dwelling, same as original use.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:14.926354-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/89000426.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/89000426/df73a27f2c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/89000426/df73a27f2c-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:House_at_145_South_Ridge.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:House_at_145_South_Ridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71985911","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q138589774"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/miami-county/house-at-145-south-ridge-89000426/"}