U.S. Post Office and Courthouse
Why it's listed
Standing on a raised foundation at Fifth and H Streets in downtown Eureka, this three-story federal building combines a post office, courtroom and government offices. Designed in 1908 by the Treasury Department's Supervising Architect's office under James Knox Taylor, it was built in 1909-10 and opened in early 1911. Its steel frame is clad in pressed brick, with a limestone base, a terra cotta cornice and five tall round-arched windows across the front. Inside, the first-floor lobby keeps its tile floor, marble wainscoting and original post office boxes, while a two-story courtroom rises above. Tempera murals painted in 1937 under Treasury sponsorship remain in place and are the only ones of their kind in Eureka. The building was the city's first federal building, requested by the Humboldt Chamber of Commerce from 1896. It is regarded as a refined, well-preserved example of early twentieth-century classical public architecture in the region and a landmark of the downtown core.
Significance in brief: The nomination argues local significance in architecture, art and politics/government. It is a refined example of the classicism used by the Treasury's Supervising Architect's office in the early 20th century, and probably the finest early public building in Eureka. It holds the city's only 1937 federally sponsored tempera murals, and it was Eureka's first federal building.
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 83001181, listed February 10, 1983. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 5th and H Sts., Eureka |
|---|---|
| County | Humboldt County |
| Listed | February 10, 1983 |
| Reference number | 83001181 |
| Resource type | Building |
| Period of significance | 1900- |
| Architect / builder | James Knox Taylor, Supervising Architect |
| Architectural style | Neoclassical (eclectic classicism, Beaux Arts influenced) |
| Areas of significance | Art, Politics/Government, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Occupied and in good condition. The exterior is essentially unaltered, the interior has minor alterations, and the building is still used for the post office, courtroom and federal offices. |
| Acreage | 0.5 |
| Coordinates | 40.80183, -124.16410 (NPS GIS) |
What listing means for this property
For a publicly owned building or structure, listing mainly matters when federal funds, permits or licences are involved: projects then go through Section 106 review so effects on the property are considered. Listing also strengthens applications for preservation grants and, for leased income-producing uses, can enable the federal rehabilitation tax credit.
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 83001181.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7891092
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.