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San Diego County, CA Fire Regulations: Wildfire Zones (2026)

Heavy Restrictions

Verified 1 month ago|Source: County Fire & Defensible Space →

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Key Facts

Designation: CAL FIRE Very High Fire Hazard Severity Zone
Building Code: CBC Chapter 7A — exterior wildfire exposure
Materials: Fire-resistant roofing, walls, windows, decking
Defensible Space: 100 ft required (Zones 0/1/2)

City-specific rules exist: Vista, Chula Vista, El Cajon, Escondido, Carlsbad, Oceanside, and San Diego have their own wildfire zones rules that differ from San Diego County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Summary

Much of unincorporated San Diego County is designated as a Very High Fire Hazard Severity Zone (VHFHSZ) by CAL FIRE. Properties in these zones must meet enhanced building standards, defensible space requirements, and fire-resistant landscaping per the County's Consolidated Fire Code.

Full Breakdown

CAL FIRE maps designate fire hazard severity zones throughout unincorporated San Diego County. Properties in Very High Fire Hazard Severity Zones must comply with California Building Code Chapter 7A (Materials and Construction Methods for Exterior Wildfire Exposure), the County's Consolidated Fire Code, and enhanced defensible space requirements. New construction and major remodels must use fire-resistant roofing, exterior walls, windows, and decking materials. Vegetation management plans may be required. Fire access roads must meet minimum width and grade requirements. The County Fire Authority reviews all building permits in fire hazard zones.

Violations & Fines

Building without required fire-resistant materials or failing to meet wildfire zone requirements may result in permit denial, stop-work orders, and required retrofitting at the owner's expense.

Frequently Asked Questions

Is my property in a wildfire zone in San Diego County?

Many properties in unincorporated San Diego County are in Very High Fire Hazard Severity Zones. Check the CAL FIRE Fire Hazard Severity Zone map or contact County Planning & Development Services with your property address.

What building materials are required in wildfire zones?

Properties in VHFHSZ must use fire-resistant roofing (Class A), ignition-resistant exterior walls, tempered or multi-pane windows, and non-combustible decking materials per California Building Code Chapter 7A.

Do wildfire zone requirements apply to existing homes?

Existing homes are generally grandfathered but must comply with defensible space requirements. Major remodels, additions, or roof replacements trigger compliance with current fire-resistant building standards.

How does San Diego County compare?

See how San Diego County's wildfire zones rules stack up against other locations.

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San Diego County, CA Fire Regulations: Wildfire Zones (2026)

Key Facts

Summary

Full Breakdown

Violations & Fines

Frequently Asked Questions

Sources & Official References

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