| Official Name: | Seminole Hot Springs, California |
| Pushpin Map: | California |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Los Angeles |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 932 |
| Coordinates: | 34.1072°N -118.7906°W |
| Area Code: | 818 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1661420 |
| Type: | geothermal |
| Discharge: | 65 liters/minute[1] |
Seminole Hot Springs is an unincorporated community in Los Angeles County, California, United States. Seminole Hot Springs is located in the Santa Monica Mountains near Cornell, 3.6miles south-southeast of Agoura Hills at an elevation of .
The settlement began as a resort built around a hot spring. The springs were first identified in 1911, and the spa closed in 1959.[2] As was the case with Radium Sulphur Springs and Bimini Hot Springs elsewhere in Los Angeles County,[3] the waters of Seminole Hot Springs were "discovered" and then commercialized after oil drillers hit water instead of petroleum.[4] Major fires passed through the area in the 1930s and 1940s.[5] The 1941 American Guide to Los Angeles described Seminole Hot Springs as "a year-round health and pleasure resort resort, with springs, cottages, bathhouse, open-air mineral water plunge, and cafe buried in a copse of sycamores below the level of the road."[6]
In 1966, an investor group headed up by James R. Biram, was formed to develop what is now Seminole Hot Springs Mobile Home Park. The park used the mineral water as an amenity of the recreation building for the residents. Unfortunately, the artesian mineral well gave out. Years later, the park was converted to a resident-owned mobile home community. Now it is essentially a suburb of the Agoura–Calabasas area. The Woolsey Fire of 2018 destroyed 100 of the 215 mobile homes at Seminole Hot Springs.