{"nrhp_refnum":"05000774","name":"Kerckoff Building and Annex","other_names":["Santa Fe Building and Annex"],"category":"building","location":{"address":"558-64 S. Main St.","address_restricted":false,"city":"Los Angeles","county":"Los Angeles County","state":"CA","lat":34.01820025200004,"lon":-118.24878176899995,"geom_source":"nps_gis"},"listed_date":"2005-08-03","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"A pair of Beaux-Arts commercial buildings at 558-64 S. Main Street in downtown Los Angeles: the ten-story Kerckoff Building (1908) and the eight-story Annex (1916), which together span Sixth Street between Main and Los Angeles Streets.","why_significant":"The buildings served as the Los Angeles headquarters of the Santa Fe Railway's Coast Lines, which ties them to the history of transportation in the city. They are also good examples of Beaux-Arts architecture, designed by a prominent Los Angeles architectural firm and retaining a high level of integrity.","narrative":"Two linked Beaux-Arts office buildings occupy the Sixth Street block between Main and Los Angeles Streets in downtown Los Angeles. The ten-story Kerckoff Building, finished in 1908, and the eight-story Annex, added in 1916, are reinforced concrete structures clad in terra cotta, with the Annex also using glazed brick. Each follows the classical three-part scheme of base, shaft and capital. Lumber and power magnate William G. Kerckoff commissioned both, using the architects Morgan and Walls and later Morgan, Walls & Morgan. The Santa Fe Railway rented space from 1908, then bought the buildings in 1933 and kept its Coast Lines headquarters there into the 1980s, which is why they are also called the Santa Fe Building and Annex. Their listing rests on that railroad role and on their architecture. Ground floors were altered over time, but the upper exteriors remain intact. A 2004-05 rehabilitation turned the interiors into housing while preserving lobbies, staircases, corridors and original windows.","period_of_significance":"1907-56","architect_builder":"Morgan & Walls, building; Morgan, Walls & Morgan, annex","architectural_style":"Late 19th & 20th Century Revivals: Beaux Arts","criteria":["A","C"],"status_note":"Certified rehabilitation in 2004-05 converted the Annex interior to housing; the buildings are now in residential use (multiple dwelling) with parking in the basements.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.768419-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/05000774.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/05000774/ffc2d496c9-800.webp","url_1600":"https://nationalhistoricalregister.com/media/05000774/ffc2d496c9-1600.webp","licence":"CC BY-SA 3.0","author":"Publichall","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Kerckhoff_Bldg_-_Los_Angeles.JPG\" rel=\"noopener\">Publichall</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:Kerckhoff_Bldg_-_Los_Angeles.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859242","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q133273511"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/los-angeles-county/kerckoff-building-and-annex-05000774/"}