{"nrhp_refnum":"88000563","name":"Port Costa School","other_names":[],"category":"building","location":{"address":"Plaza El Hambre","address_restricted":false,"city":"Port Costa","county":"Contra Costa County","state":"CA","lat":38.04471051000007,"lon":-122.18896915899995,"geom_source":"nps_gis"},"listed_date":"1988-05-25","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Education","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story, classically detailed brick and stucco school building on a 2.2-acre schoolyard at Plaza El Hambre in Port Costa, Contra Costa County, California. It was built in 1911-1912 to designs by architect William Wilde.","why_significant":"The school was the only school in Port Costa from its opening in 1912 until it closed in 1966, educating about 600 graduates. It is also the largest public building in the small town and one of its few monumental buildings. It is a representative example of Classical Revival design by San Francisco architect William Wilde, suited to rural community needs.","narrative":"Port Costa School is a two-story brick and stucco building set in a large schoolyard in the small Contra Costa County town of Port Costa. Residents voted in April 1911 to borrow $15,000 for its construction, which ran from August 1911 to March 1912, and classes began that August. It served grades 1-8 until 1966, and about 600 children graduated during its years of operation. It was the town's only school after two earlier schools were demolished. Architect William Wilde, a Danish immigrant practicing in San Francisco, designed it in Classical Revival style, with a four-column portico, pediment, dentiled cornice, and an open-book relief. Inside are a central hall, a divisible auditorium, and a glass-block floor skylight. The building keeps a high level of integrity, and a set of 1912 swings also contributes. It is the largest public building in Port Costa and shows how dignified, well-planned design served a rural community. It is currently unoccupied.","period_of_significance":"1912-1938","architect_builder":"William Wilde","architectural_style":"Classical Revival","criteria":["A","C"],"status_note":"The building is in good condition with high integrity and only minor alterations. A Keeper's amendment states it is unoccupied and no longer used for education, and lists its use as park and vacant.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:27.278438-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/88000563.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000563/642a27144b-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000563/642a27144b-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Port_Costa_School_(Port_Costa,_CA).JPG\" rel=\"noopener\">Sanfranman59</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Port_Costa_School_(Port_Costa,_CA).JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123858561","wikipedia":"https://en.wikipedia.org/wiki/Port_Costa_School","wikidata":"https://www.wikidata.org/wiki/Q7230567"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/contra-costa-county/port-costa-school-88000563/"}