House at 145 South Ridge
Also known as: Hobart Welded Steel House
Why it's listed
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.
Significance in brief: 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.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 89000426, listed May 25, 1989. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 145 S. Ridge, Troy |
|---|---|
| County | Miami County |
| Listed | May 25, 1989 |
| Reference number | 89000426 |
| Resource type | Building |
| 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 |
|
| Areas of significance | Industry, Engineering, Architecture |
| Level of significance | State |
| Status (as stated in the nomination) | Condition listed as excellent inside and outside; alterations described as minor. Used as a single-family dwelling, same as original use. |
| Acreage | 0.3 |
| Coordinates | 40.04360, -84.21750 (NPS GIS) |
What listing means for this property
National Register listing is honorary for a privately owned home: it does not by itself restrict what an owner may do with their own money, and it does not require public access. Restrictions come from local landmark or historic-district ordinances, which are separate (how they differ).
Owner-occupied houses are not eligible for the 20% federal rehabilitation tax credit, which applies to income-producing buildings, but many states offer credits for homeowners. Listing also opens the door to preservation easements and to buying a plaque. Start with what listing means for homeowners, renovating a listed house and selling one.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 89000426.
- Nomination form (PDF, National Archives) — catalog entry
- Wikidata Q138589774
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.