{"nrhp_refnum":"78000825","name":"Simi Adobe-Strathearn House","other_names":[],"category":"building","location":{"address":"137 Strathearn Pl.","address_restricted":false,"city":"Simi","county":"Ventura County","state":"CA","lat":34.27500659000003,"lon":-118.80133636099998,"geom_source":"nps_gis"},"listed_date":"1978-05-19","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Agriculture","Exploration/Settlement","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A historic house in Simi Valley, Ventura County, California, combining an adobe ranch house built before 1800 with a two-story Victorian addition built by Robert P. Strathearn in 1892-93. It is now part of a historical park.","why_significant":"The house is argued to be significant for blending an 18th-century California adobe with a late 19th-century Victorian addition. It was the home of both Spanish and American pioneers. The site also lies on a Chumash village and was the center of the El Rancho Simi land grant and later the Strathearn cattle ranch.","narrative":"This house in Simi Valley joins two eras of California history. Its core is an adobe ranch house built before 1800, with walls three feet thick, rubble foundations and mission tile floors. In 1892 Robert P. Strathearn added an eight-room, two-story Victorian wing at the southern end. The site was home to the Pico family under the Rancho Simi grant, later to Jose de la Guerra y Noriega, and in the 1880s to a Basque sheep-raising family. Strathearn raised cattle, brought electrical power to the valley and gave the Southern Pacific Railroad a right-of-way across his land. His sons continued as civic leaders. Archaeological work also suggests the house sits on the Chumash village of Shimiyi. The family lived here until 1969, when the house and surrounding acreage were donated to the Simi Valley Recreation and Park District. It opened as a historical park in 1971.","period_of_significance":null,"architect_builder":null,"architectural_style":"Adobe with Victorian style addition","criteria":[],"status_note":"Donated in 1969 to the Simi Valley Recreation and Park District and dedicated as a historical park in 1971; the form lists present use as museum and educational, and condition as good.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:32.281285-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/78000825.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78000825/655c91e5f6-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78000825/655c91e5f6-1600.webp","licence":"CC BY-SA 3.0","author":"Los Angeles","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Stathearn_House,_Simi_Valley.jpg\" rel=\"noopener\">Los Angeles</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:Stathearn_House,_Simi_Valley.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123862367","wikipedia":"https://en.wikipedia.org/wiki/Simi_Adobe%E2%80%93Strathearn_House","wikidata":"https://www.wikidata.org/wiki/Q7517734"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/ventura-county/simi-adobe-strathearn-house-78000825/"}