Wildfire Zones: Berkeley vs Sunol
How do wildfire zones rules compare between Berkeley, CA and Sunol, CA?
Berkeley and Sunol 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 →Sunol, CA
Alameda County
Much of east Alameda County including the Oakland Hills, Castro Valley, and Sunol foothills is designated Very High Fire Hazard Severity Zone by CAL FIRE, triggering strict defensible space rules.
View full Sunol rules →Key Facts Comparison
| Fact | Berkeley | Sunol |
|---|---|---|
| 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 | - |
| Zone designation | - | CAL FIRE VHFHSZ |
| Defensible space | - | PRC 4291, 100 feet |
| Building standard | - | CBC Chapter 7A |
| Disclosure | - | CA Civil Code 1103 |
| Historic fire | - | 1991 Oakland Hills Firestorm |
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.
Sunol FAQ
How do I find out if my property is in a VHFHSZ?
Use the CAL FIRE Fire Hazard Severity Zone Viewer online or contact the Alameda County Fire Department to confirm your parcel status.
What are the insurance implications?
VHFHSZ properties face higher premiums, non-renewals, and may need the California FAIR Plan; completing home hardening can help qualify for the Safer From Wildfires program discounts.
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