The Coastal Zone is a 55 mile strip along the Sonoma County Coast. Under the California Coastal Act local governments are required to draft Local Coastal Programs (LCP) to guide coastal development, conservation, and planning.
Pursuant to their LCPs, local governments (it can be a city or county or coastal area) issue permits for coastal development.
LCPs only become effective upon approval by the Coastal Commission.
You can download a PDF of the Permit Sonoma coastal zone map here:

The “Coastal Zone” is the strip on the Sonoma coast from Mendocino County at the north to Marin Co. at the south end.
It includes 9 communities:
- Bodega Bay 94923
- Carmet 94923
- Duncan Mills 95430
- Jenner 95950
- Salmon Creek 94923
- Sereno DelMar 95465
- The Sea Ranch 95497
- Timber Cove 95421
- Valley Ford 94972