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.
CAL FIRE maps identify portions of northeastern Orange, including Santiago Hills and areas bordering Santiago Oaks Regional Park, as Very High Fire Hazard Severity Zones (VHFHSZ). Properties in these zones must comply with enhanced California Building Code Chapter 7A standards for wildfire-resistant construction including non-combustible roofing, ignition-resistant exterior walls, tempered glass windows, and enclosed eaves. Defensible space of 100 feet is required around all structures per PRC Section 4291. New construction requires fire-resistant landscaping plans. The city fire department conducts annual inspections in high-risk areas. Property owners must maintain Class A roofing, clear gutters of combustible debris, and remove vegetation that could serve as ladder fuel connecting ground fires to tree canopies.
Non-compliance with wildfire zone building standards and defensible space requirements may result in fire department orders, fines, denial of building permits, and potential insurance cancellations.
Orange, CA
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Side-by-side rule comparisons with other cities in Orange County.
See how other cities in Orange County handle wildfire zones.
See how Orange's wildfire zones rules stack up against other locations.
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