California - Role: Building
| San Diego Athletic Club |
| San Diego Fire Department Shops at Station 6 |
| San Diego Mission Church |
| San Diego Rowing Club |
| San Diego Trust and Savings Bank Building |
| San Diego Veterans' War Memorial Building-Balboa Park |
| San Dimas Hotel |
| San Fernando Building, The |
| San Francisco and North Pacific Railroad Station House-Depot |
| San Francisco Art Institute |
| San Francisco Central YMCA |
| San Francisco Fire Department Engine Co. Number 2 |
| San Francisco Juvenile Court and Detention Home |
| San Francisco National Guard Armory and Arsenal |
| San Francisco Public Library North Beach Branch |
| San Gabriel Mission |
| San Gabriel Mission Playhouse |
| San Gregorio House |
| San Joaquin Light & Power Corporation Building |
| San Jose Central Fire Station |
| San Luis Obispo Carnegie Library |
| San Luis Rey Mission Church |
| San Mateo County Courthouse |
| San Pedro, Los Angeles, & Salt Lake RR Depot |
| San Pedro Municipal Ferry Building |
| San Rafael Improvement Club |
| San Rafael Rancho |
| Santa Ana City Hall |
| Santa Ana Fire Station Headquarters No. 1 |
| Santa Barbara Club |
| Santa Barbara County Courthouse |
| Santa Barbara Mission |
| Santa Barbara Veterans Memorial Building |
| Santa Clara Depot |
| Santa Clara Verein |
| Santa Fe Coast Lines Hospital |
| Santa Fe Depot |
| Santa Fe Federal Savings and Loan Association |
| Santa Fe Freight Depot |
| Santa Fe Hotel |
| Santa Fe Passenger and Freight Depot |
| Santa Fe Passenger Depot |
| Santa Fe Railway Passenger and Freight Depot |
| Santa Margarita Ranchhouse |
| Santa Monica Civic Auditorium |
| Santa Monica Looff Hippodrome |
| Santa Paula Hardware Company Block-Union Oil Company |
| Santiago Orange Growers Association Packing House |
| San Timoteo Canyon Schoolhouse |
| Santora Building |
| Sara-Thel Court |
| Saratoga Foothill Club |
| Saratoga Village Library |
| Sargent, Aaron A., House |
| Sargent, B. V., House |
| Sather Tower |
| Saticoy Southern Pacific Railroad Depot |
| Sausalito Woman's Club |
| Sawyers Bar Catholic Church |
| Schaffer, J.W. House |
| Schindler, R. M., House |
| Schoenstein and Company Pipe Organ Factory |
| Schonchin Butte Fire Lookout |
| Schorlig House |
| Schreiber, Brock, Boathouse and Beach |
| Scott, Hiram D., House |
| Scott, Irving Murray, School |
| Scripps, George H., Memorial Marine Biological Laboratory |
| Scripps Hall |
| Scully Ranch |
| Seabiscuit's Stud Barn |
| Seal Beach City Hall |
| Sears, Roebuck & Company Mail Order Building |
| Sebastopol Depot of the Petaluma and Santa Rosa Railway |
| Second Baptist Church |
| Second Church of Christ Scientist |
| Second Church of Christ, Scientist |
| Security Bank and Trust Company Building |
| Security-First National Bank of Los Angeles |
| Security Trust and Savings |
| Security Trust and Savings Building |
| Semorile Building |
| Senior Hall |
| Serrano, Jose, Adobe |
| Shadelands Ranch House |
| Shady Point |
| Shaffer, Charles A., House |
| Shasta Inn and Weed Lumber Company Boarding House |
| Shaw House |
| Shaw, Isaac E., Building |
| Shell Gas Station |
| Shiloh Baptist Church |
| Shoup, Paul, House |
| Sieroty House |
| Sierra City School |
| Sierraville School |
| Silberstein Park Building |
| Simi Adobe-Strathearn House |
| Simmons, William Adam, House |
| Simon's, M. H., Undertaking Chapel |
Data from United States Park Service and Wikidata
