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.
The community is intended to be built over 25 to 30 years, with approximately one-half of the 11,700-acre area designated as open space. It comprises 17,000 houses, designed for 70,000 inhabitants. The developers have said they plan to attract local jobs in order to employ the anticipated number of adult residents.
The Center for Biological Diversity, based in Tucson, Arizona, opposes the housing project, claiming that it would be built on rare ecosystems, including the largest native grassland left in California. The project is planned to encroach on the territory inhabited by the endangered California condor, as well as 26 other species.
- Patric Hedlund, "'Huge' Step for Tejon's Centennial Plan." The Mountain Enterprise, November 28, 2014, page 13
- LA Curbed: "Tejon Ranch Project Could Affect 27 Plants and Animals" (with map); 3 February 2012.
- Jon Gertner (2007-03-18). "Playing Sim City For Real". New York Times. Retrieved 2009-07-17.
- Scott Gold, "Stoic little town faces tomorrow; A massive housing project may mean the end for Neenach, in the Antelope Valley," Los Angeles Times, February 29, 2008 (library card required)