House at 129 South Ridge
Also known as: Hobart Welded Steel House
Why it's listed
This two-story house at 129 South Ridge in Troy, Ohio, was fabricated entirely of lightweight welded steel at the Hobart Brothers factory on West Main Street and delivered by truck to the Edgehill subdivision in 1941. No bolts were used in its construction. Its Georgian Revival form includes a three-bay facade, a central entrance hood supported by welded steel, a circular window above, original casement windows with decorative shutters, and a truncated hip roof with a central chimney. Moderne touches appear in the smooth walls, rounded corners and steel bands marking the floors. The house was rented until 1945, then purchased by a Hobart Manufacturing Company sales manager. One of 21 surviving Hobart steel houses, it keeps its original steel walls and an unaltered steel garage. It was listed for its intact appearance, material and construction method, and as part of the Hobarts' steel housing venture begun in the early 1930s.
Significance in brief: It is one of 21 remaining Hobart steel houses and one of two extant two-story Hobart Georgian Revivals with original steel walls and truncated hip roof. It is significant for its unaltered appearance, building material and method of construction, and as a continuation of the Hobarts' early 1930s venture into steel housing. It qualifies despite being less than 50 years old.
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 89000423, listed May 25, 1989. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 129 S. Ridge, Troy |
|---|---|
| County | Miami County |
| Listed | May 25, 1989 |
| Reference number | 89000423 |
| Resource type | Building |
| Period of significance | 1942 |
| Architect / builder | Hobart Welded Steel Co. (Hobart brothers) |
| Architectural style | Georgian Revival (Hobart Colonial), with Moderne detailing |
| Criteria |
|
| Areas of significance | Industry, Engineering, Architecture |
| Level of significance | State |
| Status (as stated in the nomination) | Interior in good condition and exterior in very good condition; described as well maintained, with an unaltered original garage. |
| Acreage | 0.3 |
| Coordinates | 40.04432, -84.21747 (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 89000423.
- Nomination form (PDF, National Archives) — catalog entry
- Wikidata Q138589676
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.