{"nrhp_refnum":"87002407","name":"South Serrano Avenue Historic District","other_names":[],"category":"district","location":{"address":"400 blk. of S. Serrano Ave.","address_restricted":false,"city":"Los Angeles","county":"Los Angeles County","state":"CA","lat":34.066296769000076,"lon":-118.30648488899999,"geom_source":"nps_gis"},"listed_date":"1988-01-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A residential historic district made up of the 400 block of South Serrano Avenue in the old Wilshire District of Los Angeles, between 4th and 5th Streets. It has eighteen houses and two vacant lots, mostly built around 1913-1920.","why_significant":"The block has a consistent, uniform grouping of large two-story houses with very few intrusions, which the nomination says is unmatched in the surrounding area. The houses are mostly intact and show a range of early twentieth-century revival and Prairie/Craftsman styles. Many were built for prominent local business and professional people.","narrative":"This residential district covers the 400 block of South Serrano Avenue in Los Angeles, between 4th and 5th Streets, three blocks north of Wilshire Boulevard. It holds eighteen houses and two vacant lots. Most of the houses date from about 1913 to 1920, and only one altered house and the two empty lots are counted as non-contributing. The block was built up with large two-story homes on generous lots, many with original garages, some with servants' quarters above, and the original scored concrete sidewalks survive. Styles include Neoclassical, Colonial Revival, Tudor Revival and Prairie School, including a relatively rare Prairie example at 421 South Serrano. Architects and builders named include Henry J. Knauer, Henry H. Whiteley, Frank M. Tyler, and the Cooper-Pyle-Clopine Company. Early residents included attorneys, bankers, real estate figures and business owners. The nomination stresses that no other block in the surrounding area has such a consistent, intact grouping with so few intrusions, and most houses remain in good to excellent condition.","period_of_significance":null,"architect_builder":"Henry J. Knauer; Henry H. Whiteley; Cooper-Pyle-Clopine Company; R.D. Johnson; Frank M. Tyler; Althouse Brothers; Matthias S. Yeager Company","architectural_style":"Neoclassical, Prairie/Craftsman, Colonial Revival, Tudor Revival","criteria":[],"status_note":"Most buildings are in good to excellent condition and remain largely intact. Most houses are still single-family dwellings, and a few are group homes. Two lots are vacant.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:28.129115-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/87002407.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/87002407/4c0e7445e2-800.webp","url_1600":"https://nationalhistoricalregister.com/media/87002407/4c0e7445e2-1600.webp","licence":"CC BY-SA 3.0","author":"Los Angeles","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:House_at_403_S._Serrano,_Los_Angeles.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:House_at_403_S._Serrano,_Los_Angeles.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859526","wikipedia":"https://en.wikipedia.org/wiki/South_Serrano_Avenue_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q7568411"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/south-serrano-avenue-historic-district-87002407/"}