{"nrhp_refnum":"01001178","name":"Estudillo Mansion","other_names":[],"category":"building","location":{"address":"150 S. Dillon","address_restricted":false,"city":"San Jacinto","county":"Riverside County","state":"CA","lat":33.781017907000034,"lon":-116.96811706499994,"geom_source":"nps_gis"},"listed_date":"2001-10-25","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Politics/Government"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story brick Italianate mansion at 150 S. Dillon in San Jacinto, Riverside County, California, built in the 1880s as the home of Francisco Estudillo. It sits on a 5.39-acre lot with a carriage house and landscaped grounds.","why_significant":"The nomination argues significance under Criterion B for its association with Francisco Estudillo, heir to the family's Mexican land grant in the San Jacinto Valley. He became a leading developer and held local offices. The mansion and the adjacent railroad depot, built on land he donated, became the center of growth for the new town of San Jacinto.","narrative":"Francisco Estudillo's mansion at 150 S. Dillon in San Jacinto is a two-story brick house in the Italianate style, with a symmetrical facade, segmental-arched windows, a truncated hip roof with wood shingles, and ornate brackets under the eaves. A one-story rear extension was added around 1940. It stands on a 5.39-acre lot with mature trees, a formal hedged garden, and an early carriage house. Estudillo inherited part of his family's Mexican land grant in the San Jacinto Valley and became a leading developer. His land company offered the railroad a free right-of-way and depot site, helping make the new town of San Jacinto the valley's center. He also served as mayor and later as a federal Mission Indian Agent. The house was damaged by the 1992 Landers earthquake, then retrofitted by the city, which now owns it. Its original wraparound porch was removed and is being prepared for reconstruction. The period of significance is 1885 to 1901, the years he lived here.","period_of_significance":"1885-1901","architect_builder":"Bacon & Ashenfelter","architectural_style":"Italianate","criteria":["B"],"status_note":"Damaged in the 1992 Landers earthquake; seismic retrofit completed April 2000, with porch reconstruction and interior restoration still under way. Owned by the City of San Jacinto.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:27.848439-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/01001178.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/01001178/5749637cc7-800.webp","url_1600":"https://nationalhistoricalregister.com/media/01001178/5749637cc7-1600.webp","licence":"CC BY-SA 3.0","author":"Steve Rouhotas","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Estudillo_Mansion_007_wiki.jpg\" rel=\"noopener\">Steve Rouhotas</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:Estudillo_Mansion_007_wiki.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860460","wikipedia":"https://en.wikipedia.org/wiki/Estudillo_Mansion","wikidata":"https://www.wikidata.org/wiki/Q133441001"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/riverside-county/estudillo-mansion-01001178/"}