Centennial, California is a proposed 11,700-acre (47 km2) master-planned community on Tejon Ranch, in Los Angeles County between Bakersfield and Los Angeles. It is sited in the far western Antelope Valley at the foothills of the Sierra Pelona and Tehachapi Mountains. It is planned to be located along California State Route 138 east of Interstate 5, and northeast of Quail Lake. Centennial is planned to be developed by four companies: Tejon Ranch Company, Lewis Operating Company, Pardee Homes and Standard Pacific Homes, on the property of Tejon Ranch.