What we loose:
- The proposed Centennial Specific Plan is sited on a hot, windy grassland prone to wildfire. CAL FIRE has designated the location a high fire hazard severity zone.
- Neighborhoods would be built on top of two major fault lines, including the San Andreas.
- Public transit will not accompany the project, leaving future residents with long commutes.
- Experts estimate an additional 75,000 car trips per day.
- Californians will have to pay a $800 million price tag to widen Hwy 138, which will be needed to accommodate traffic associated with the project.
- Centennial will destroy more than 5,000 acres of high quality habitat for native grasses and wildflowers.
Saving one of California’s greatest wildflower habitats
Saving one of California’s greatest wildflower habitats
When naturalist John Muir crossed California, he passed through vast fields of wildflowers noting that his feet “would press a hundred flowers at every step.” Places like this still exist, and CNPS is working to protect one of California’s last.
Centennial is a proposed new city of 55,000 people in the far northwestern corner of the county. The project is located on Tejon Ranch, which sits at the confluence of five eco-regions. Here, where coastal habitats meet the Mojave Desert and the Tehachapi Mountains, lies
one of California’s most biodiverse landscapes. Tejon Ranch is home to 911 native plant taxa. That’s 14 percent of California’s native flora of California occurring on just 0.25 percent of the state’s acreage!
On December 11, 2018, the Los Angeles County Board of Supervisors indicated their intent to approve Centennial in a 4-1 vote. For more information on this decision please see this press release.
CNPS is currently working with our partner organizations to determine the next steps in our opposition to Centennial. Stay tuned on social media for the latest updates on this project
Bad for the environment, bad for people
CNPS, the Center for Biological Diversity, and thousands of other Californians are working hard to stop the project, which planning experts and scientists are calling a dangerous boondoggle.
- The proposed Centennial Specific Plan is sited on a hot, windy grassland prone to wildfire. CAL FIRE has designated the location a high fire hazard severity zone.
- Neighborhoods would be built on top of two major fault lines, including the San Andreas.
- Public transit will not accompany the project, leaving future residents with long commutes.
- Experts estimate an additional 75,000 car trips per day.
- Californians will have to pay a $800 million price tag to widen Hwy 138, which will be needed to accommodate traffic associated with the project.
- Centennial will destroy more than 5,000 acres of high quality habitat for native grasses and wildflowers.
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- Centennial will destroy more than 5,000 acres of high quality habitat for native grasses and wildflowers.
The Los Angeles County Planning Commission recently OK’d the 19,000-home Centennial project on Tejon Ranch. Developing in the wildland urban interface, where homes and offices abut foothills, forests or other open land, increases both the risk of starting fires and the number of people and structures in harm’s way when there is a fire. – LA Times Editorial Board
Centennial is located 65 miles north of Los Angeles 
Map of CALFire Hazard class on the proposed Centennial development 
Map of faults running through the proposed Centennial development Additional information
CNPS & Partner Comment Letters
Community Group Comments
Additional Expert Comment
Recent Press
Latest news and stories
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California Native Plant Society Condemns LA County Decision to Approve the Centennial Development
The decisions we make here in California strongly influence how we as 21st century citizens will address the very real challenges of climate change and a growing population. -
A Reckoning for Centennial… and California
The commission’s decision is a major step backward for LA County. The Centennial Specific Plan now heads to the board of supervisors for a vote later this year. -
Centennial Update
Once again, the vote on the proposed Centennial development on Tejon Ranch has been delayed. Here’s what you need to know before August 29.
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