San Luis Obispo Carnegie Library
Also known as: San Luis Obispo County Historical Museum
Why it's listed
Built in 1905 at 696 Monterey Street in San Luis Obispo, this Carnegie-funded library combines local red brick with Bishop's Peak granite and Los Berros sandstone. Architect William H. Weeks gave it a tall slate hipped roof, two gable wings, carved gable ornament and a columned entry portico. Inside, original woodwork, plaster ceilings, fireplaces and the checkout desk survive. The library grew from a community campaign that began in 1892 with a subscription library, passed to the city in 1897, and won a $10,000 Carnegie gift in 1903. It served as the town library until 1955 and has housed the county museum since 1956. It was listed for its role in California library development and as a strong example of Richardsonian Romanesque design, one of three such libraries by Weeks. Minor changes include 1967 seismic strengthening of the portico and a 1983 elevator enclosure.
Significance in brief: It is significant under Criterion A in Social History for its link to library development in California, shown by the community effort in San Luis Obispo from 1857 to 1905. Under Criterion C it is a notable example of the Richardsonian Romanesque style, one of three Romanesque libraries by Weeks, of which two remain. The interior and exterior remain largely original.
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 95000357, listed March 30, 1995. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 696 Monterey St., San Luis Obispo |
|---|---|
| County | San Luis Obispo County |
| Listed | March 30, 1995 |
| Reference number | 95000357 |
| Resource type | Building |
| Period of significance | 1905-1945 |
| Architect / builder | Weeks, William H. (architect); Maino, Theo (builder) |
| Architectural style | Richardsonian Romanesque |
| Criteria |
|
| Areas of significance | Social History, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Used as the county historical museum since 1956; exterior and interior described as well maintained and largely original. |
| Acreage | 0.9 |
| Coordinates | 35.28017, -120.66500 (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 95000357.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q14683887
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.