Wildfire Zones: Orange vs Santa Ana
How do wildfire zones rules compare between Orange, CA and Santa Ana, CA?
Santa Ana has fewer restrictions than Orange.
Orange, CA
Orange County
Portions of the City of Orange, particularly the Santiago Hills area, are within CAL FIRE-designated fire hazard severity zones. Properties in these zones are subject to enhanced building standards, defensible space requirements, and vegetation management mandates.
View full Orange rules →Santa Ana, CA
Orange County
Santa Ana is a fully urbanized city with no areas designated as Very High Fire Hazard Severity Zones (VHFHSZ) by CAL FIRE. The city is served by the Orange County Fire Authority (OCFA) and is not subject to wildland-urban interface fire regulations.
View full Santa Ana rules →Key Facts Comparison
| Fact | Orange | Santa Ana |
|---|---|---|
| VHFHSZ Areas | Santiago Hills, NE Orange | None in Santa Ana |
| Building Code | CBC Chapter 7A required | - |
| Defensible Space | 100 feet mandatory | - |
| Roof Material | Class A non-combustible | - |
| Fire Service | - | Orange County Fire Authority |
| Responsibility Area | - | Local (LRA) |
| WUI Requirements | - | Not applicable |
| Standard Fire Code | - | Still enforced |
Highlighted rows indicate differences between cities.
Orange FAQ
Is my Orange property in a fire hazard zone?
Properties in Santiago Hills and northeastern Orange near wildland areas may be in VHFHSZ. Check CAL FIRE's fire hazard severity zone maps or contact the fire department.
What building standards apply in wildfire zones?
CBC Chapter 7A requires non-combustible roofing, ignition-resistant exteriors, tempered glass, and enclosed eaves for properties in Very High Fire Hazard Severity Zones.
Santa Ana FAQ
Is Santa Ana in a wildfire zone?
No. Santa Ana is a fully urbanized city with no areas designated as Very High Fire Hazard Severity Zones by CAL FIRE.
Do I need special fire-resistant building materials in Santa Ana?
The enhanced WUI building material requirements do not apply in Santa Ana since the city has no VHFHSZ areas. Standard California Building Code fire protection requirements still apply.
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