Wildfire Zones: Berkeley vs Fremont
How do wildfire zones rules compare between Berkeley, CA and Fremont, CA?
Berkeley and Fremont have similar restriction levels.
Berkeley, CA
Alameda County
The Berkeley Hills are designated Very High Fire Hazard Severity Zone by CAL FIRE. Enhanced defensible space, WUI building codes, and ember-resistant construction are mandatory.
View full Berkeley rules →Fremont, CA
Alameda County
Fremont east foothills including Mission Peak, Weibel, Vargas Plateau, and Niles Canyon are mapped as Very High Fire Hazard Severity Zones by CAL FIRE, triggering stricter building and clearance rules.
View full Fremont rules →Key Facts Comparison
| Fact | Berkeley | Fremont |
|---|---|---|
| Zone | Berkeley Hills = VHFHSZ | - |
| Building code | CFC Chapter 7A (WUI) | - |
| Roof | Class A required | - |
| Vents | 1/8-inch ember-resistant mesh | - |
| Sale disclosure | AB 38 required | - |
| VHFHSZ Coverage | - | About 30 percent of city |
| Key Areas | - | Mission Peak, Weibel, Vargas, Niles |
| Build Code | - | CBC Chapter 7A |
| Defensible Space | - | 100 ft required |
| Real Estate | - | NHD plus AB 38 disclosure |
Highlighted rows indicate differences between cities.
Berkeley FAQ
How do I check if my home is in the VHFHSZ?
Use the CAL FIRE FHSZ Viewer online or Berkeley's parcel map. Most homes east of the Hayward Fault (roughly above Shattuck elevation) fall inside the VHFHSZ.
Do I need to retrofit my existing home to WUI code?
Only new construction and substantial remodels trigger Chapter 7A compliance. However, voluntary home hardening is strongly encouraged and may qualify for insurance discounts under the Safer from Wildfires framework.
Fremont FAQ
How do I check if my Fremont home is in a VHFHSZ?
Use the CAL FIRE Fire Hazard Severity Zone viewer at osfm.fire.ca.gov or contact Fremont Fire Prevention at 510-494-4200 with your address for a written determination.
Does VHFHSZ affect my insurance?
Yes. Many carriers non-renew VHFHSZ policies. The California FAIR Plan is the insurer of last resort. Completing home hardening and defensible space can qualify you for the Safer from Wildfires insurance discount.
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