{"nrhp_refnum":"92000778","name":"Napa County Courthouse Plaza","other_names":["Napa County Courthouse/Hall of Records"],"category":"building","location":{"address":"Bounded by Coombs, Second, Brown and Third Sts.","address_restricted":false,"city":"Napa","county":"Napa County","state":"CA","lat":38.29741639200006,"lon":-122.28565711499999,"geom_source":"nps_gis"},"listed_date":"1992-06-18","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A 1.32-acre county government plaza in downtown Napa, California, bounded by Coombs, Second, Brown and Third Streets. It holds an 1878 Courthouse and a 1916 Hall of Records, plus a 1978 addition between them.","why_significant":"The complex is significant for its long association with Napa County government and its courts and offices from 1878 to 1942. The 1878 Courthouse is a well executed High Victorian Italianate building by the Newsom brothers, and the only known Newsom-designed courthouse in California. The 1916 Hall of Records is an early example of reinforced concrete with poured-in-place detailing.","narrative":"Courthouse Plaza occupies a landscaped block in downtown Napa and has served as the seat of county government for well over a century. Its two historic buildings are the 1878 Courthouse, a two-story brick and stucco High Victorian Italianate design by Samuel and Joseph Newsom with local architect Ira Gilchrist, and the 1916 Hall of Records, a two-story reinforced concrete building by William H. Corlett with a clay tile roof. A three-story addition from 1978 replaced the old jail between them. The Courthouse lost its tower in 1931 and was partly restored in 1978, including its second-floor glass dome. The plaza was recognized for housing the county courts and administrative offices from 1878 to 1942, and for its architecture. The Courthouse is the only known courthouse the Newsoms designed in California. The Hall of Records is an early example of poured-in-place concrete detailing, with Mission-style tile reflecting early California design.","period_of_significance":"1878-1942","architect_builder":"Newsom, Samuel & Joseph; Gilchrist, Ira; Corlett, William H.","architectural_style":"Courthouse: Italianate, High Victorian Italianate; Hall of Records: Renaissance, Second Renaissance Revival","criteria":["A","C"],"status_note":"The Hall of Records was used for county records until 1989, then for storage, and was vacated in late 1990. The form lists current use as courthouse and vacant/not in use.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:27.355774-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/92000778.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/92000778/664536ee1f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/92000778/664536ee1f-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Napa_County_Courthouse_Plaza,_Napa,_CA_9-5-2010_3-01-28_PM.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:Napa_County_Courthouse_Plaza,_Napa,_CA_9-5-2010_3-01-28_PM.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860060","wikipedia":"https://en.wikipedia.org/wiki/Napa_County_Courthouse_Plaza","wikidata":"https://www.wikidata.org/wiki/Q18154867"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/napa-county/napa-county-courthouse-plaza-92000778/"}