{"nrhp_refnum":"73000408","name":"Pico, Pio, Casa","other_names":["Pio Pico State Historic Park"],"category":"building","location":{"address":"6003 Pioneer Blvd.","address_restricted":false,"city":"Whittier","county":"Los Angeles County","state":"CA","lat":33.99362688400004,"lon":-118.08179357299997,"geom_source":"nps_gis"},"listed_date":"1973-06-19","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government","Social History"],"significance_levels":["state"],"summary":{"what_it_is":"Adobe ranch house at 6003 Pioneer Boulevard in Whittier, Los Angeles County, California, rebuilt by Pio Pico after the winter of 1883-84 on part of his Rancho Paso de Bartolo, now part of Pio Pico State Historic Park.","why_significant":"The nomination ties the house to Pio Pico, the last Mexican-era governor of California, who lived at his ranch (El Ranchito) for forty years of the American period. It also notes the ranch as the site of the last California battle of the Mexican War, the area of the first settlement of the Los Angeles region in 1771, and Picoville, described as California's first planned town. The house is presented as a blend of American and Mexican architecture.","narrative":"This adobe ranch house in Whittier, California, was the home of Pio Pico, the last Mexican governor of California. Pico built a first adobe house on his Rancho Paso de Bartolo in 1852, but winter rains and floods destroyed it in 1883-84. He rebuilt at once on a larger scale, reusing some of the original foundations. The second house is a 1½-story adobe about 98 feet long, laid out in a U around a patio, with 15 rooms, wood floors, a shingled gabled roof, dormer windows and a front porch with an upper balcony. The nomination calls it a compromise between American and Mexican building traditions. Two rooms were removed in 1946, when some reinforced concrete faced with adobe brick was added. The nomination links the site to Pico's later career in education, banking, town development and early oil ventures, to the last California battle of the Mexican War, to the 1771 settlement of the Los Angeles area, and to Picoville. It is now a state historic park.","period_of_significance":"19th Century","architect_builder":"Pio Pico (built)","architectural_style":"Adobe, a compromise of American and Mexican architecture","criteria":[],"status_note":"Condition listed as fair, with the building described as unaltered and on its original site apart from two rooms removed in 1946; it is operated as a state historic park and museum with preservation work in progress.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:32.234183-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/73000408.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/73000408/6e98f1bb64-800.webp","url_1600":"https://nationalhistoricalregister.com/media/73000408/6e98f1bb64-1600.webp","licence":"CC BY-SA 4.0","author":"Epolk","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Pio_Pico_State_Historic_Park_2007.jpg\" rel=\"noopener\">Epolk</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Pio_Pico_State_Historic_Park_2007.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859410","wikipedia":"https://en.wikipedia.org/wiki/P%C3%ADo_Pico_State_Historic_Park","wikidata":"https://www.wikidata.org/wiki/Q7196600"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/pico-pio-casa-73000408/"}