{"nrhp_refnum":"12001234","name":"California Cotton Mills Company Factory","other_names":["California Cotton Mills"],"category":"building","location":{"address":"1091 Calcot Pl.","address_restricted":false,"city":"Oakland","county":"Alameda County","state":"CA","lat":37.77971509300005,"lon":-122.23693084699994,"geom_source":"nps_gis"},"listed_date":"2013-01-30","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A four-story brick daylight factory with an attached warehouse at 1091 Calcot Place in Oakland's Jingletown area, built in 1917 as an addition to the California Cotton Mills complex, which dates from the 1880s. Architect A.C. Griewank designed it.","why_significant":"The nomination argues local significance under Criterion C as one of the most important surviving examples of early twentieth century 'engineer's industrial' construction in Oakland. It combines brick masonry, precast concrete and composite timber-and-metal girders to get open floors and glass-dominated walls without reinforced concrete. It also reflects the mills' economic role in Jingletown and the importance of rail lines to Oakland industry.","narrative":"Rising four stories beside the railroad tracks in Oakland's Jingletown neighborhood, this brick factory was built in 1917 as an addition to the California Cotton Mills complex, which dates to the 1880s. Architect A.C. Griewank designed it, and it measures roughly 250 by 125 feet with clock towers at two corners. Thin corbelled brick pilasters, bands of steel sash windows and white-painted concrete lintels let in abundant light, while wood columns and composite timber-and-metal girders carry the floors. The east tower still holds a working clock mechanism. A 1940s warehouse addition adjoins an original 1880s mill wall. The mill closed in 1954 after construction of the freeway cut through the site. The building has since been converted to live/work studios. It is recognized for its engineer-designed daylight construction, which sits between older brick bearing-wall mills and later concrete-framed factories, and for its link to the neighborhood's industrial and immigrant history.","period_of_significance":null,"architect_builder":"A.C. Griewank (architect)","architectural_style":"OTHER / Daylight Factory","criteria":["C"],"status_note":"Rehabilitated as 74 live/work residential studios, with the attached warehouse serving as a parking garage.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.680122-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/12001234.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/12001234/70e5429fb5-800.webp","url_1600":"https://nationalhistoricalregister.com/media/12001234/70e5429fb5-1600.webp","licence":"CC BY-SA 3.0","author":"Peter5992","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Hdr_00074_0_1.jpg\" rel=\"noopener\">Peter5992</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:Hdr_00074_0_1.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123858167","wikipedia":"https://en.wikipedia.org/wiki/California_Cotton_Mills_Company_Factory","wikidata":"https://www.wikidata.org/wiki/Q123232243"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/alameda-county/california-cotton-mills-company-factory-12001234/"}