{"nrhp_refnum":"75000479","name":"Bourn-Roth Estate","other_names":["Filoli"],"category":"building","location":{"address":"3.7 mi. NW of Woodside off Canada Rd.","address_restricted":false,"city":"Woodside","county":"San Mateo County","state":"CA","lat":37.46170487100005,"lon":-122.32504884187318,"geom_source":"nps_gis"},"listed_date":"1975-08-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Landscape Architecture","Historic - Aboriginal","Art","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"Filoli, also called the Bourn-Roth Estate, is a Georgian Revival country house with formal gardens and surrounding grounds near Woodside, San Mateo County, California. Designed by Willis J. Polk in 1914-1915, it was occupied in September 1917 and the landscaping was completed around 1919.","why_significant":"The nomination argues that Filoli is California's most triumphant example of Georgian Revival and an outstanding American country house, one of Willis J. Polk's last and finest domestic designs. It is also described as the last large Northern California estate of its scale to survive free of subdivision. The gardens by Bruce Porter, the oak-studded setting, and an archeological site on the grounds add to its significance.","narrative":"Filoli is a large estate in the foothills near Woodside, California, surrounded by watershed lands and a state fish and game refuge. Its centerpiece is a two-story, U-shaped Georgian Revival house of warm red brick with a red tile roof, about 18,000 square feet. Willis J. Polk designed it for William B. Bourn II, and the family moved in during 1917. Arthur Brown, Jr., later designed the service wing, garage, tea pavilion and other outbuildings. Bruce Porter laid out the formal gardens, which include a sunken garden, a walled garden and a maze, set among very old coast live oaks. The nomination calls the house a first-rate survivor of a type of country house that has mostly been demolished or converted to institutional use. It also notes an Indian archeological site on the grounds that dates back more than 1,000 years, and a nineteenth-century sawmill history in the valley.","period_of_significance":null,"architect_builder":"Willis J. Polk; Arthur Brown, Jr. (Bakewell & Brown) designed the service and garage wing, tea pavilion and gardener's house; Bruce Porter (landscape); James Mitchell (1928 porch)","architectural_style":"Georgian Revival","criteria":[],"status_note":"Occupied as a private residence by the Roth family since 1937; the house is described as unusually well preserved, with only a 1928 porch added to the original house.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.379061-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/75000479.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/75000479/df2fef8810-800.webp","url_1600":"https://nationalhistoricalregister.com/media/75000479/df2fef8810-1600.webp","licence":"CC BY-SA 3.0","author":"Sukuru","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Filoli_Mansion.jpg\" rel=\"noopener\">Sukuru</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:Filoli_Mansion.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861488","wikipedia":"https://en.wikipedia.org/wiki/Filoli","wikidata":"https://www.wikidata.org/wiki/Q478408"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-mateo-county/bourn-roth-estate-75000479/"}