{"nrhp_refnum":"04000327","name":"Building at 735 Market Street","other_names":["Caroll &amp","Tilton Building"],"category":"building","location":{"address":"735 Market St.","address_restricted":false,"city":"San Francisco","county":"San Francisco","state":"CA","lat":37.78670373500006,"lon":-122.40462662799996,"geom_source":"nps_gis"},"listed_date":"2004-07-27","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A six-story commercial Beaux Arts office and retail building at 735 Market Street on the south side of Market Street between Third and Fourth Streets in San Francisco, built in 1908 and designed by Willis Polk.","why_significant":"The building is argued to be significant under Criterion C at the local level as the work of master architect Willis Polk. It is a fine example of his commercial work and of the traditional Beaux Arts base, shaft and capital facade organization used in San Francisco's post-1906 rebuilding. It also helped define the Market Street corridor.","narrative":"Built in 1908, this six-story commercial building on the south side of Market Street in San Francisco was designed by architect Willis Polk. Its sandstone front is organized into a base, a continuous shaft and a bracketed cornice, with Tuscan and Corinthian pilasters dividing three window bays. Side walls are brick over a masonry and steel structure, and the building fills a narrow lot fifty feet wide. The ground floor has been altered repeatedly since 1927, and most interior finishes are gone, though a marble staircase survives. A rehabilitation beginning in 1999 added seismic strengthening, repaired the cornice and windows, and installed a compatible storefront. The building is listed for its link to Polk, a leading San Francisco architect of the early twentieth century. It is considered one of his strongest small office and retail designs, typical of the city's rebuilding after the 1906 earthquake and fire, and it helps define the Market Street streetscape.","period_of_significance":null,"architect_builder":"Polk, Willis","architectural_style":"Early 20th Century Revival/Beaux Arts","criteria":["C"],"status_note":"Rehabilitated from 1999 under a certified tax credit project with seismic retrofit; the primary facade is in good condition, and the building is in commercial office and retail use with a connection to an adjacent hotel.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.731583-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/04000327.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/04000327/fd49d762f2-800.webp","url_1600":"https://nationalhistoricalregister.com/media/04000327/fd49d762f2-1600.webp","licence":"CC BY-SA 4.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:735_Market_St_(San_Francisco).JPG\" rel=\"noopener\">Sanfranman59</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:735_Market_St_(San_Francisco).JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861061","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q133463844"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-francisco/building-at-735-market-street-04000327/"}