Wildfire Zones: Fallbrook vs San Marcos
How do wildfire zones rules compare between Fallbrook, CA and San Marcos, CA?
Fallbrook and San Marcos have similar restriction levels.
Fallbrook, CA
San Diego County
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.
View full Fallbrook rules →San Marcos, CA
San Diego County
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.
View full San Marcos rules →Key Facts Comparison
| Fact | Fallbrook | San Marcos |
|---|---|---|
| Designation | CAL FIRE Very High Fire Hazard Severity Zone | CAL FIRE Very High Fire Hazard Severity Zone |
| Building Code | CBC Chapter 7A — exterior wildfire exposure | CBC Chapter 7A — exterior wildfire exposure |
| Materials | Fire-resistant roofing, walls, windows, decking | Fire-resistant roofing, walls, windows, decking |
| Defensible Space | 100 ft required (Zones 0/1/2) | 100 ft required (Zones 0/1/2) |
| Authority | County Fire Authority reviews permits | County Fire Authority reviews permits |
Highlighted rows indicate differences between cities.
Fallbrook FAQ
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.
San Marcos FAQ
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.
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