{"nrhp_refnum":"92000996","name":"Earl, Thomas, House","other_names":[],"category":"building","location":{"address":"1221 Seminary St.","address_restricted":false,"city":"Napa","county":"Napa County","state":"CA","lat":38.29925206900003,"lon":-122.29112859899999,"geom_source":"nps_gis"},"listed_date":"1992-08-18","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Social History"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story Italianate house with a concrete core and horizontal board siding in Napa, Napa County, California, built in 1861 by Thomas Earl. The architect and builder are unknown, and the address was later corrected to 1221 Seminary Street.","why_significant":"The house is significant in the social history of Napa for its association with Thomas Earl, one of the town's leading citizens for four decades. Earl was active in construction, commerce and government service. It is the only surviving building in Napa clearly tied to him, and it retains enough original design to represent his career from 1861 until his death in 1893.","narrative":"Built in 1861 for Thomas Earl, this two-story Italianate house in Napa has lime-and-gravel concrete walls, a shallow hipped roof with scrolled brackets, a full-width front porch and two slanted bay windows flanking the entrance. Horizontal board siding was added in 1878 over the original scored stucco, and a rear addition and the present porch details were in place by 1886. Earl came to California in 1850, opened a saddlery in Napa in 1851 and built the town's first brick building and its first iron-front building north of San Francisco. He served as County Administrator from 1861 to 1865 and later as city marshal, and he backed a woolen mill and an early bank. The house is the only building in Napa with clear ties to him, and it has changed little since his death in 1893. Deterioration of the concrete core is noted as a concern.","period_of_significance":"1861-1893","architect_builder":"unknown","architectural_style":"Late Victorian: Italianate","criteria":["B"],"status_note":"Still used as a single dwelling. The form notes the concrete core is beginning to crumble, causing bowing walls and moisture problems.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:28.202737-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/92000996.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/92000996/12be8f6230-800.webp","url_1600":"https://nationalhistoricalregister.com/media/92000996/12be8f6230-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Thomas_Earl_House,_1221_Seminary_St.,_Napa,_CA_9-5-2010_5-55-33_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:Thomas_Earl_House,_1221_Seminary_St.,_Napa,_CA_9-5-2010_5-55-33_PM.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860004","wikipedia":"https://en.wikipedia.org/wiki/Thomas_Earl_House_(Napa,_California)","wikidata":"https://www.wikidata.org/wiki/Q85809192"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/napa-county/earl-thomas-house-92000996/"}