{"nrhp_refnum":"72000223","name":"Moraga Adobe","other_names":["Moraga,Joaquin Adobe"],"category":"building","location":{"address":"24 Adobe Lane","address_restricted":false,"city":"Orinda","county":"Contra Costa County","state":"CA","lat":37.843206990000056,"lon":-122.15356366199995,"geom_source":"nps_gis"},"listed_date":"1972-03-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A one-story adobe house at 24 Adobe Lane in Orinda, Contra Costa County, California, believed to have been built in 1841 for Joaquin Moraga on the Laguna de Los Palos Colorados ranch.","why_significant":"The adobe is tied to the Moraga family, prominent in early California, and to Joaquin Moraga, who with Juan Bernal received the Laguna de Los Palos Colorados grant in 1841. It was marked as California Historical Landmark No. 509 in 1954. The nomination stresses its historical association rather than its architecture.","narrative":"Built around 1841, this adobe house in Orinda was the home of Joaquin Moraga, grandson of Jose Moraga, a lieutenant on the Anza expedition to California and an early settler of the San Francisco area. In 1841 Joaquin Moraga and his cousin Juan Bernal received the roughly 13,000-acre Laguna de Los Palos Colorados grant from Governor Alvarado. The original building had two-foot-thick adobe brick walls, redwood beams and roof timbers cut locally, and redwood plank floors and ceilings. A 1941 restoration kept the original floor plan and roof line, added a fireplace, tile flooring, a shake roof, an extra bedroom of adobe brick, and plaster over the walls. Further changes in the 1960s included a lowered ceiling and a new bathroom. The house remains a private residence in good condition. The Contra Costa Historical Society marked it with a plaque in 1954 as California Historical Landmark No. 509.","period_of_significance":"19th Century; specific date 1841","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Occupied as a private residence in good condition; restored in 1941 and further altered in 1965.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.517439-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/72000223.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/72000223/ea15d54efc-800.webp","url_1600":"https://nationalhistoricalregister.com/media/72000223/ea15d54efc-1600.webp","licence":"Public domain","author":"Unknown authorUnknown author","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Moraga_Adobe_(Orinda,_CA).jpg\" rel=\"noopener\">Unknown authorUnknown author</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Moraga_Adobe_(Orinda,_CA).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123858548","wikipedia":"https://en.wikipedia.org/wiki/Moraga_Adobe","wikidata":"https://www.wikidata.org/wiki/Q6909004"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/contra-costa-county/moraga-adobe-72000223/"}