California - Role: Building
| Corder Building |
| Corona High School |
| Cosby, James Fielding, House |
| Cottage Court |
| Cottrell, John A., House |
| Coulter House |
| Court |
| Court |
| Court |
| Cowell Memorial Hospital |
| Coxhead, Ernest, House |
| Crabbe, Earl, Gymnasium |
| Crane Flat Fire Lookout |
| Crank House |
| Cranston-Geary House |
| Crescent Bathhouse |
| Cresent City Lighthouse |
| Crocker, E. B., Art Gallery |
| Croll Building |
| Crooks Mansion |
| Crossroads of the World |
| Cucamonga Service Station |
| Culbertson, Cordelia A., House |
| Culver, C. Z., House |
| Culver Hotel |
| Cunningham-Hembree Estate |
| Cypress Court |
| Cypress Street Schoolhouse |
| Dallam-Merritt House |
| Dana Adobe |
| Dana, Richard Henry, Branch |
| Danville Southern Pacific Railroad Depot |
| Davenport Jail |
| Davis Mill |
| De Anza Hotel |
| Degnan's Restaurant |
| Delane House |
| de Lemos, Pedro, House |
| De Neve, Felipe, Branch |
| Denham, Mary E., House |
| DePue, Grace Blair, House and Indian Museum |
| Derby, James Daniel, House |
| De Turk Round Barn |
| Devils Postpile National Monument Ranger Cabin |
| Dewella Apartments |
| DeWenter Mansion, Guest House and Grounds |
| Diamond Apartments |
| Dielmann, John, House |
| Dixie Schoolhouse |
| Dixon Carnegie Library |
| Doctors House |
| Doe Memorial Library |
| Dohrmann Building |
| Dollar, Robert, Estate |
| Dollar, Robert, House |
| Dollar, Robert Stanley Sr., House |
| Dolliver House |
| Dominguez Ranch Adobe |
| Donaldson Futuro |
| Don Carlos Court |
| Doolan, Richard P., Residence and Storefronts |
| Douglas Flat School |
| Downing, T. B., House |
| Drawing Building |
| Dresbach-Hunt-Boyer House |
| Drucker, Peter, House |
| Drum Barracks |
| Dudley House |
| Dunker House |
| Dunlap's Dining Room |
| Dunn, Robert J., House |
| Dunns Block |
| Dunsmuir House |
| Durant Hall |
| Durham, W. W., House |
| Dutton Hotel, Stagecoach Station |
| Eagle Rock Branch Library |
| Eagles Hall |
| Eames House |
| Earl, Thomas, House |
| Easley, Oscar, Block |
| Eastern Star Hall |
| East San Jose Carnegie Library |
| Ebell Club of Santa Paula |
| Ebell of Los Angeles |
| Ebell Society of Santa Ana Valley |
| Eden Congregational Church |
| Edgemoor Farm Dairy Barn |
| Edgewood Store |
| Edris House |
| Edwards, Frank G., House |
| Egan, Richard, House |
| Ehrhardt, William, House |
| Eight Mile House |
| Einstein House |
| El Cabrillo |
| El Cortez Apartment Hotel |
| El Dorado Elementary School |
| Elephant Packing House |
| El Garces |
Data from United States Park Service and Wikidata
