Wildfire Zones: Oro Valley vs Tucson
How do wildfire zones rules compare between Oro Valley, AZ and Tucson, AZ?
Oro Valley and Tucson have similar restriction levels.
Oro Valley, AZ
Pima County
Oro Valley has significant Wildland-Urban Interface (WUI) exposure along the Santa Catalina Mountains, Pusch Ridge Wilderness, and Catalina State Park. The Golder Ranch Fire District maps WUI zones and enforces fire-adapted building and landscaping requirements. Properties in WUI zones face enhanced building standards, defensible space requirements, and may experience periodic evacuations during wildfire events. The 2020 Bighorn Fire demonstrated the real wildfire threat to Oro Valley communities.
View full Oro Valley rules →Tucson, AZ
Pima County
Eastern and northern Tucson neighborhoods adjacent to Saguaro National Park, Coronado National Forest, and Tucson Mountain Park fall within mapped wildland-urban interface zones. Properties in these zones face stricter building code requirements including Class A fire-resistant roofing, ember-resistant vents, and defensible space maintenance.
View full Tucson rules →Key Facts Comparison
| Fact | Oro Valley | Tucson |
|---|---|---|
| WUI Zones | Catalina foothills, Pusch Ridge area | - |
| 2020 Bighorn Fire | 119,000+ acres, OV evacuations | - |
| Building Standards | Class A roof, ember-resistant vents | - |
| Fire District | Golder Ranch FD | - |
| Federal Land | Coronado National Forest adjacent | - |
| Applicable Code | - | IWUIC 2021 Tucson adopted |
| Roofing | - | Class A required in WUI zones |
| Walls | - | 1-hour rated within 10 feet of PL |
| Vents | - | Ember-resistant required |
| Free Inspection | - | Tucson Fire 520-791-4502 |
Highlighted rows indicate differences between cities.
Oro Valley FAQ
Is my Oro Valley property in a wildfire zone?
Properties along the northern and eastern boundaries near the Catalina Mountains, Pusch Ridge Wilderness, and Catalina State Park are in WUI zones. Contact the Golder Ranch Fire District for specific property assessments and WUI mapping.
What building requirements apply in Oro Valley wildfire zones?
WUI zone properties must meet enhanced standards including Class A fire-rated roofing, ember-resistant vents, non-combustible siding, and defensible space landscaping. These apply to new construction and major renovations.
How real is the wildfire risk in Oro Valley?
The 2020 Bighorn Fire burned over 119,000 acres in the Catalina Mountains and caused evacuations in Oro Valley communities. Wildfire risk is significant and ongoing, especially during dry spring and summer months.
Tucson FAQ
Is my Tucson home in a wildfire zone?
Properties adjacent to Saguaro National Park east and west, Tucson Mountain Park, and the Catalina foothills near Mount Lemmon are typically mapped in WUI zones. Call Tucson Fire Prevention for a site-specific check.
What building upgrades are required in Tucson WUI zones?
New builds need Class A fire roof, ember-resistant vents, 1-hour rated walls near property lines, and non-combustible deck surfaces. Retrofits are triggered by substantial remodels exceeding 50 percent of value.
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