Wildfire Zones: Palo Alto vs San Jose
How do wildfire zones rules compare between Palo Alto, CA and San Jose, CA?
Palo Alto and San Jose have similar restriction levels.
Palo Alto, CA
Santa Clara County
Western foothill neighborhoods in Palo Alto sit in the CAL FIRE Very High Fire Hazard Severity Zone. Properties there face defensible space, ember-resistant construction, and inspection requirements under California law.
View full Palo Alto rules →San Jose, CA
Santa Clara County
Cal Fire maps significant portions of eastern and southern San Jose as Very High Fire Hazard Severity Zones, including Alum Rock, East Foothills, Evergreen, Silver Creek, and Almaden Valley rims. Homes in these zones face stricter building codes, defensible space inspections, insurance scrutiny, and AB 38 disclosure requirements on sale.
View full San Jose rules →Key Facts Comparison
| Fact | Palo Alto | San Jose |
|---|---|---|
| VHFHSZ area | Foothills west of I-280 | - |
| Defensible space | 100 feet required | - |
| New construction | Chapter 7A WUI standards | - |
| Evacuation routes | Page Mill, Arastradero | - |
| Mapping agency | CAL FIRE | - |
| - | - |
Highlighted rows indicate differences between cities.
Palo Alto FAQ
How do I check if my home is in VHFHSZ?
Use the CAL FIRE FHSZ Viewer online or call Palo Alto Fire Prevention. Address-level searches show the designation.
Does VHFHSZ affect my insurance?
Yes. Many carriers non-renew or raise premiums in VHFHSZ areas. The California FAIR Plan is the insurer of last resort.
San Jose FAQ
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See how Palo Alto and San Jose compare on other ordinance categories.
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