House at 421 West Twohig
Why it's listed
Built around 1908, this large two-story brick house at 421 West Twohig in San Angelo is a notable local example of Prairie-style architecture. It has a low-pitched, flared hipped roof with very wide, bracketed eaves and attic dormers. Two matching brick porches with decks above, rusticated brick bases and cast stone trim dominate two facades. Each porch has three arched bays, and the central bay projects, rises to a higher parapet and has an elliptical arch springing from columned brickwork. The entry has sidelights and a transom, and the windows are large-paned one-over-one sashes. The house went up on a street of other large residences during a period of commercial and agricultural growth, before the boom of the 1920s. It is now used as an office and is in good condition. A metal fire escape and painted brick are the main alterations, and the fire escape detracts from the original appearance.
Significance in brief: It is described as a very handsome example of Prairie-influenced architecture. It was built in 1908 on a street of other large houses, during a period of commercial and agricultural expansion and before the boom years of the 1920s. Its significance is rated as local, in the area of architecture.
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 88002598, listed November 25, 1988. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 421 W. Twohig, San Angelo |
|---|---|
| County | Tom Green County |
| Listed | November 25, 1988 |
| Reference number | 88002598 |
| Resource type | Building |
| Architectural style | Prairie |
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Now used as an office; physical condition is described as good, with a metal fire escape and painted brick as alterations. |
| Acreage | 0.9 |
| Coordinates | 31.45854, -100.44396 (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 88002598.
- Nomination form (PDF, National Archives) — catalog entry
- Wikidata Q110001376
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.