{"nrhp_refnum":"74000519","name":"Workman Adobe","other_names":["Workman,William(Don Julian)House"],"category":"building","location":{"address":"15415 Don Julian Rd.","address_restricted":false,"city":"Industry","county":"Los Angeles County","state":"CA","lat":34.02001022700006,"lon":-117.96507073299995,"geom_source":"nps_gis"},"listed_date":"1974-11-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Architecture","Social History"],"significance_levels":["state"],"summary":{"what_it_is":"A vine-covered brick-and-plaster house with an 1842 adobe core at 15415 E. Don Julian Road in the City of Industry, Los Angeles County, California. It began as an adobe about 1842 and was remodeled in 1872 for William (Don Julian) Workman by architect E. F. Kysor.","why_significant":"The nomination ties the house to William Workman and the first overland wagon train of eastern settlers to reach Southern California in 1841, and to the La Puente Rancho. It also calls the house a unique architectural example that combines an 1842 adobe with an 1872 English country house remodel. It is described as one of the last surviving works of pioneer Los Angeles architect E. F. Kysor.","narrative":"Built about 1842 as a simple adobe with a flat, tar-covered roof, this house in the City of Industry was later enlarged into a U-shaped adobe with 75-foot wings around a patio. Its owner, William Workman, was an English-born rancher and banking pioneer who led a party of settlers from New Mexico to Los Angeles, arriving in November 1841. In 1872 he hired architect E. F. Kysor, who had designed the Temple Block and Pico House in Los Angeles. Kysor demolished the adobe wings and wrapped the original core in brick and plaster to resemble an English country squire's home, with Norman-arched windows, plaster quoins and decorative eave brackets. The two-foot-thick adobe walls, hand-hewn beams and a partly submerged basement with wine cellars survive inside. The house is valued for its link to the La Puente Rancho and early Anglo-American settlement, and for its rare blend of two nineteenth-century building periods. The City of Industry planned restoration and public use.","period_of_significance":null,"architect_builder":"E. F. Kysor (1872 alteration); William Workman (original builder-owner)","architectural_style":"Simulated English country house (1872 alteration) enclosing an 1842 California adobe","criteria":[],"status_note":"Listed in fair condition and altered, on its original site. The City of Industry owns it and has begun plans for restoration as a historical-cultural facility for public use.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:32.099183-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/74000519.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/74000519/e3622f8f59-800.webp","url_1600":"https://nationalhistoricalregister.com/media/74000519/e3622f8f59-1600.webp","licence":"CC BY-SA 4.0","author":"Los Angeles","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:William_Workman_House,_City_of_Industry.JPG\" rel=\"noopener\">Los Angeles</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:William_Workman_House,_City_of_Industry.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859634","wikipedia":"https://en.wikipedia.org/wiki/Workman_and_Temple_Family_Homestead_Museum","wikidata":"https://www.wikidata.org/wiki/Q8035025"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/workman-adobe-74000519/"}