{"nrhp_refnum":"92001559","name":"DeWenter Mansion, Guest House and Grounds","other_names":["DeWenter Ranch"],"category":"building","location":{"address":"6100 Brydon Rd.","address_restricted":false,"city":"La Verne","county":"Los Angeles County","state":"CA","lat":34.15189010300003,"lon":-117.75718601999995,"geom_source":"nps_gis"},"listed_date":"1992-11-05","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A Spanish Colonial Revival citrus ranch estate at 6100 Brydon Road in the hills north of La Verne, California. It includes a two-story mansion built in 1940, a guest house built 1938-39, an aviary and grounds on 4.22 acres.","why_significant":"The nomination argues the mansion is a superior, finely detailed example of Spanish Colonial Revival architecture in the La Verne area. It also represents the prosperity of the citrus industry, La Verne's principal economic force, and the homes of its successful ranchers. Few comparable ranch houses and settings survive nearby.","narrative":"Set on a gentle rise in the hills north of La Verne, this former citrus ranch estate centers on a two-story Spanish Colonial Revival mansion completed in 1940 and a smaller guest house finished in 1939. Los Angeles architect William Werner designed the mansion, which has stucco walls, red clay tile roofs, wrought iron balconies, stained glass and decorative tilework inside and out. The guest house was built by Pacific Systems Homes to a design by Saul H. Brown. The 4.22-acre remnant of a ranch once exceeding 299 acres also keeps a live oak canyon, an aviary, specimen plantings and part of the orange grove. The DeWenter family bought the ranch in 1937 and worked it for decades. The property was recognized for its architecture and as a rare surviving example of the homes built by prosperous citrus ranchers when citrus drove La Verne's economy. Other comparable ranch houses nearby have lost their settings or been demolished.","period_of_significance":"1939-1940","architect_builder":"William H. Werner (mansion architect); Saul H. Brown (guest house architect), built by Pacific Systems Homes","architectural_style":"Mission/Spanish Colonial Revival","criteria":["C"],"status_note":"Described as retaining about 95% of its original architectural elements and finishes; the new owners plan cleaning, repairs, grounds restoration and a kitchen update, with continued residential use.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:28.081618-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/92001559.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859061","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/dewenter-mansion-guest-house-and-grounds-92001559/"}