Hatt Building
Why it's listed
The Hatt Building is a historic building in Napa, Napa County, California, listed on the National Register of Historic Places in 1977. The surviving file for this entry is limited. It consists of a USGS 7.5-minute Napa quadrangle map marking the building's location and boundary, with UTM coordinates of zone 10, 562820 east and 4238720 north, and a latitude of about 38°17'47" north. A label on the material carries the year 1884 and the name A. Hatt, which may relate to the building's origin, though the text does not explain this. The nomination form itself is noted as missing, so there is no description of the architecture, builder, original use, current condition or the reasons the building was judged significant. Details beyond its location in downtown Napa cannot be confirmed from this material.
Significance in brief: The document does not include the nomination form, so no statement of significance is available. It contains only a USGS topographic location map and a notice that the nomination form, photographs and USGS map documentation are missing from the entry.
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 77000316, listed May 2, 1977. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence low).
Key facts
| Address | 5th and Main Sts., Napa |
|---|---|
| County | Napa County |
| Listed | May 2, 1977 |
| Reference number | 77000316 |
| Resource type | Building |
| Areas of significance | Industry |
| Level of significance | Local |
| Acreage | 0.5 |
| Coordinates | 38.29614, -122.28270 (NPS GIS) |
What listing means for this property
For an income-producing building, listing (individually or as a contributing building in a district) is the gateway to the 20% federal rehabilitation tax credit on qualified rehabilitation costs, often stackable with state credits. Work claiming the credit must follow the Secretary of the Interior's Standards and be approved in advance.
Listing does not restrict a private owner acting without federal money or permits; where federal funding or licensing is involved, Section 106 review applies.
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 77000316.
- Nomination form (PDF, National Archives) — catalog entry
- Wikidata Q133308231
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.