{"nrhp_refnum":"79000570","name":"Olivas Adobe","other_names":[],"category":"building","location":{"address":"4200 Olivas Park Dr.","address_restricted":false,"city":"Ventura","county":"Ventura County","state":"CA","lat":34.24447674100003,"lon":-119.24204231499999,"geom_source":"nps_gis"},"listed_date":"1979-07-24","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A two-story Monterey-style adobe rancho complex at 4200 Olivas Park Drive in Ventura, California, built around an enclosed courtyard. The original small adobe dates to 1837 and the larger adobe to 1849, built under Raimundo Olivas, and the site is now a city park.","why_significant":"The nomination calls it an outstanding example of a two-story adobe in Southern California, a type that was uncommon there in the mid-19th century. It reflects early rancho days and Mexican land grant practices, and the site has yielded small artifacts of the early California rancho period. It is also California State Landmark No. 115.","narrative":"Olivas Adobe is a rancho home complex on a low bluff above the old Santa Clara River in Ventura, California. A small adobe was built in 1837 as the Olivas family homestead. A larger two-story adobe followed in 1849, funded by cattle sales during the gold rush years. Don Raimundo Olivas supervised the work, while his wife Theodora took responsibility for construction as he was often away herding. The buildings were joined by an adobe wall around a courtyard, originally designed for defense, with doors and windows facing inward. Later owners added a dairy milking room, refurbished the house, and used it as a hunting club and duck reserve. The City of Ventura acquired it in 1963 and restored it in the early 1970s with a foundation grant. It is valued as a rare two-story adobe of the Mexican rancho era in Southern California and is a state historical landmark.","period_of_significance":"1800-1899","architect_builder":"Raimundo Olivas/builder","architectural_style":"Monterey adobe style, patterned after Northern California Monterey Adobes","criteria":[],"status_note":"Restored by the City of Ventura, which acquired it in 1963; now a park with an exhibit hall and extensive gardens.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.875568-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/79000570.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79000570/9c8b07ac64-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79000570/9c8b07ac64-1600.webp","licence":"CC BY-SA 3.0","author":"Los Angeles","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Olivas_Adobe_(Ventura,_California).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:Olivas_Adobe_(Ventura,_California).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123862352","wikipedia":"https://en.wikipedia.org/wiki/Olivas_Adobe","wikidata":"https://www.wikidata.org/wiki/Q7087108"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/ventura-county/olivas-adobe-79000570/"}