{"nrhp_refnum":"04000331","name":"Lower Arroyo Seco Historic District","other_names":[],"category":"district","location":{"address":"Roughly Arroyo Blvd., W. California Blvd., La Loma Blvd.","address_restricted":false,"city":"Pasadena","county":"Los Angeles County","state":"CA","lat":34.13457912150005,"lon":-118.16216127286015,"geom_source":"nps_gis"},"listed_date":"2005-07-12","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A residential historic district in the southwest part of Pasadena, California, along South Arroyo Boulevard, West California Boulevard and La Loma Road at the edge of the Arroyo Seco. It contains 94 contributing resources (78 buildings and 16 structures) built mostly in the early twentieth century.","why_significant":"The district is described as meeting the registration requirements of the multiple property listing on Pasadena residential architecture of 1895-1918 and the influence of the Arts and Crafts movement. It holds very good to excellent examples of Arts and Crafts bungalows and two-story houses, with a unified landscape of arroyo-stone walls and mature trees. The contributing buildings retain a high degree of integrity.","narrative":"This residential district occupies the southwest corner of Pasadena beside the Arroyo Seco, a dry riverbed used as a natural park. It includes houses along South Arroyo Boulevard, West California Boulevard and La Loma Road, mostly built in the early 1900s. Of 102 properties, 78 contribute, along with 16 retaining walls. The houses are bungalows and two-story Arts and Crafts residences, some with Swiss chalet, English or Colonial Revival influences. Builders favored natural materials: dark wood shingle or clapboard siding, low-pitched roofs, and foundations, chimneys and walls made of arroyo cobblestone. Houses sit low on their sites and are screened by retaining walls, oaks, eucalyptus and palms. One property, the Ernest A. Batchelder house and studio, was already listed individually. The district meets the registration requirements of a multiple property listing on Pasadena's Arts and Crafts residential architecture, and its contributing buildings retain a high degree of integrity despite some unobtrusive newer infill.","period_of_significance":null,"architect_builder":"Multiple architects and builders, including George A. Clark, Louis du Puget Millar, Ernest A. Batchelder, B. Marshall Wotkyns, Reginald D. Johnson and Louis B. Easton","architectural_style":"Bungalow, Colonial Revival, Tudor Revival; Arts and Crafts period styles including Anglo-Colonial Revival, English-influenced and Swiss Chalet","criteria":[],"status_note":"Current function is single-family dwellings; the newer infill houses are described as unobtrusive and the contributing buildings retain a high degree of integrity.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.519821-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/04000331.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/04000331/48e49657fe-800.webp","url_1600":"https://nationalhistoricalregister.com/media/04000331/48e49657fe-1600.webp","licence":"CC BY-SA 3.0","author":"TheCatalyst31","credit_html":"TheCatalyst31, CC BY-SA 3.0, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Lower_Arroyo_Seco_Historic_District_1.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123857540","wikipedia":"https://en.wikipedia.org/wiki/Lower_Arroyo_Seco_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q17019119"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/lower-arroyo-seco-historic-district-04000331/"}