Phoenix adopts the International Fire Code (2024 edition with local amendments) under Chapter 15. While the urban core has low wildfire risk, northern mountain preserve areas have elevated risk. The Arizona DFFM evaluates communities at risk, and Phoenix requires defensible space and fire-resistant construction in hazard areas.
Phoenix addresses wildfire risk through hazard zone mapping and defensible space requirements. Properties in designated wildfire hazard areas must maintain cleared zones around structures, typically 30 feet of lean/clean zone and 100 feet of reduced fuel zone. Fire-resistant roofing and siding materials may be required for new construction. Vegetation management includes removing dead plants, trimming tree branches away from structures, and maintaining spacing between shrubs. Ember-resistant vents and enclosed eaves may be required. Local fire departments conduct inspections in high-risk areas.
Defensible space violations: fines $100 to $1,500. Non-compliant construction: required upgrades. Insurance companies may decline coverage in high-risk zones without compliance.
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Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle wildfire zones.
See how Phoenix's wildfire zones rules stack up against other locations.
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