California - Area of significance: Exploration/Settlement
| Harrier, Daniel Webster, House |
| Hawkins-Nimocks Estate-Patricio Ontiveros Adobe |
| Helena Historic District |
| Helme-Worthy Store and Residence |
| Hendrick, William T., House |
| Hensley Historic District |
| Hicks House |
| Highland Historic District |
| Hill-Carrillo Adobe |
| Hillmont |
| Hodgdon Homestead Cabin |
| Hollywood Cemetery |
| Holy Trinity Church |
| Hospital Rock |
| Hotel Green |
| Hotel Macdoel |
| Hotel San Clemente |
| Hubbard-Upson House |
| Irvine Bean and Growers Association Building |
| Jacoby Building |
| Jensen, Cornelius, Ranch |
| Johnson Ranch and Burtis Hotel Sites |
| Jordan, Orin, House |
| Juarez, Cayetano, Adobe |
| Judson and Brown Ditch |
| Kee House |
| Kennedy Mine Historic District |
| Kottinger, John W., Adobe Barn |
| Kroger-Melrose District |
| Kruger House |
| Kwaaymii Homeland |
| La Casa Alvarado |
| Lake Norconian Club |
| La Purísima Mission |
| Laughlin, James H. and Frances E., House |
| Llano Road Roadhouse |
| Locke's Meat Market |
| Long Canyon Village Site |
| Los Alamos Ranch House |
| Los Rios Street Historic District |
| Lovejoy Homestead |
| Lyons, Harrison, Homestead Historic District |
| Lyons Ranches Historic District |
| Madrona Knoll Rancho District |
| Marsh, John, House |
| Martin, Samuel, House |
| Maulhardt, Gottfried, Farm |
| McFarlan, George, House |
| McGurk Cabin |
| McNally, Andrew, House |
| McNally's Windemere Ranch Headquarters |
| Melrose-Backs Neighborhood Houses |
| Menlo Avenue-West Twenty-ninth Street Historic District |
| Michigan Bluff-Last Chance Trail |
| Mission de la Purisima Concepcion de Maria Santisima Site |
| Mission Dolores |
| Mission Hill Area Historic District |
| Mission La Purísima at ’Amuwu District |
| Mission Nuestra Senora de la Soledad Historic District |
| Mission San Fernando Rey de Convento Building |
| Mojave Road |
| Molino Lodge Building |
| Monterey Old Town Historic District |
| Morse, LeGrand, House |
| Mountain House Historic District |
| Moyse Building |
| Navarro |
| Nevada City Downtown Historic District |
| New Fair Oaks Historic District |
| Newland House |
| Niles Canyon Transcontinental Railroad Historic District |
| Odd Fellows Hall |
| O'Donnell, Thomas, House |
| Offerman, John, House |
| Ohm, John, House |
| Old Adobe Barn |
| Old Backs House |
| Old Borges Ranch |
| Old Riverview Historic District |
| Old Sacramento Historic District |
| Old Santa Rosa Catholic Church and Cemetery |
| Old Santa Susana Stage Road |
| Old Towne Orange Historic District |
| Olivas Adobe |
| Oroville Commercial District (old) |
| Osuna, Juan Maria, Adobe |
| Pacheco, Don Fernando, Adobe |
| Palmer, Minnie Hill, House |
| Parker House |
| Parra, Miguel, Adobe |
| Pegler, John Carlton, House |
| Peralta, Antonio Maria, House |
| Perris Depot |
| Petaluma Adobe |
| Phelps, Abner, House |
| Phillips House |
| Picchetti Brothers Winery |
| Pitzer House |
| Plaza, The |
| Pogue Hotel |
Data from United States Park Service and Wikidata
