{"nrhp_refnum":"83001202","name":"Prospect Historic District","other_names":[],"category":"district","location":{"address":"Prospect Blvd., Square, Crescent, and Terrace, Rosemont Ave., Armada and Fremont Drs., and La Mesa Pl.","address_restricted":false,"city":"Pasadena","county":"Los Angeles County","state":"CA","lat":34.15865423100007,"lon":-118.16147541874697,"geom_source":"nps_gis"},"listed_date":"1983-04-07","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A residential historic district in Pasadena, Los Angeles County, California, made up of the Prospect Park Tract and Arroyo Park Tract. It contains 108 single-family houses built between 1906 and 1930, plus later houses and a private day school.","why_significant":"The visible text is mostly a building-by-building inventory and does not include the formal significance statement. It shows a cohesive neighborhood of architect-designed homes in Revival and Craftsman styles, with only one significantly altered structure. Many designs are by known architects, and one house is noted as winning an A.I.A. award in 1927.","narrative":"Prospect Historic District is a neighborhood of 108 single-family houses built between 1906 and 1930 in Pasadena, California. It covers the Prospect Park and Arroyo Park tracts, along streets such as Prospect Boulevard, Rosemont Avenue, Armada Drive and La Mesa Place. The homes show a wide range of styles, including Colonial, Spanish, French Normandy, English and Mediterranean Revival designs, Craftsman bungalows and California Ranch houses. Many were designed by recognized architects, among them Reginald Johnson, Marston & Van Pelt, and Millar & Hayes, and one ranch house won an A.I.A. award in 1927. The older Prospect Park Tract mixes Craftsman and Revival houses, while the later Arroyo Park Tract is almost entirely Revival in style. Streets are lined with mature trees, and the houses sit on larger than average lots on sloping ground. Apart from one house, none has been significantly altered, and newer buildings match the older ones in scale and setback.","period_of_significance":null,"architect_builder":"Multiple architects and builders, including Reginald Johnson, Marston & Van Pelt, Millar & Hayes, Allison & Allison, Harold Bissner and Cyril Bennett","architectural_style":"Revival styles (Colonial, Spanish, French and English Medieval, Mission, Mediterranean, Classic), Craftsman bungalows, and California Ranch Style","criteria":[],"status_note":"Condition is marked excellent and unaltered. Only two vacant lots remain, and the houses are occupied private residences, with a private school also in the district.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:26.973597-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/83001202.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/83001202/4566cf893a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/83001202/4566cf893a-1600.webp","licence":"CC0","author":"TheCatalyst31","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:662_Prospect_Blvd,_Prospect_Historic_District.JPG\" rel=\"noopener\">TheCatalyst31</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:662_Prospect_Blvd,_Prospect_Historic_District.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859432","wikipedia":"https://en.wikipedia.org/wiki/Prospect_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q15268729"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/prospect-historic-district-83001202/"}