{"nrhp_refnum":"05000049","name":"Petitfils-Boos House","other_names":[],"category":"building","location":{"address":"545 Plymouth Blvd.","address_restricted":false,"city":"Los Angeles","county":"Los Angeles County","state":"CA","lat":34.064317249000055,"lon":-118.32292491399994,"geom_source":"nps_gis"},"listed_date":"2005-02-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Art"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story, roughly 9,000 square foot single-family residence at 545 Plymouth Boulevard in Los Angeles, California, completed in 1922 and designed by architect Charles F. Plummer.","why_significant":"The nomination argues the house is an outstanding Los Angeles example of Italian Renaissance Revival architecture, notable for its glazed terra cotta exterior and high-quality craftsmanship. It is also significant for murals and decorative ceilings attributed to Dutch-born muralist Anthony Heinsbergen, one of his few documented residential commissions.","narrative":"Built in 1922 at the corner of Sixth Street and Plymouth Boulevard in Los Angeles, this two-story, L-shaped house of about 9,000 square feet is a notable example of Italian Renaissance Revival design. Its hollow clay tile structure is clad in glazed terra cotta in cream, beige and gold, topped by a red clay tile hipped roof, with quoins at the corners and a richly detailed recessed entrance. Architect Charles F. Plummer designed it for Walter Petitfils, who sold it in 1927 to Henry and Cassie Boos, friends and business associates. Inside, the original floor plan and decorative art remain, including a walnut spiral stair, stained glass, mosaic floor tile, and painted and gilded ceilings and murals tied to muralist Anthony Heinsbergen. The house was recognized for its architecture, its unusual terra cotta exterior in a city of stucco, and its rare documented residential work by Heinsbergen. A two-story garage with servants quarters at the rear has been significantly altered and does not contribute.","period_of_significance":"1922","architect_builder":"Plummer, Charles F., architect","architectural_style":"Late 19th & 20th Century Revivals: Italian Renaissance Revival","criteria":["C"],"status_note":"Currently used as a single-family residence; the exterior is largely unaltered and the original floor plan and decorative art survive. The rear garage building is significantly altered and non-contributing.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.675788-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/05000049.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/05000049/7c26270271-800.webp","url_1600":"https://nationalhistoricalregister.com/media/05000049/7c26270271-1600.webp","licence":"CC BY-SA 3.0","author":"Los Angeles","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Petitfils-Boos_House,_Hancock_Park.JPG\" rel=\"noopener\">Los Angeles</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:Petitfils-Boos_House,_Hancock_Park.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859406","wikipedia":"https://en.wikipedia.org/wiki/Petitfils-Boos_House","wikidata":"https://www.wikidata.org/wiki/Q7178422"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/petitfils-boos-house-05000049/"}