Livermore, CA Fire Regulations: Wildfire Zones (2026)
Key Facts
- Zone Areas
- South/east foothills
- Designation
- VHFHSZ (LRA) + SRA
- Construction
- CBC Chapter 7A
- Roofing
- Class A required
- Defensible Space
- PRC §4291 100 ft
Summary
Livermore's south and east foothills, including areas near Del Valle and Sycamore Grove, are mapped as Very High Fire Hazard Severity Zone by CAL FIRE.
The Fire Hazard Severity Zone (FHSZ) maps are developed using a science-based and field-tested model that assigns a hazard score based on the factors that influence fire likelihood and fire behavior. Many factors are considered such as fire history, existing and potential fuel (natural vegetation), predicted flame length, blowing embers, terrain, and typical fire weather for the area. There are three levels of hazard in the State Responsibility Areas: moderate, high, and very high. ... "Hazard" is based on the physical conditions that create a likelihood and expected fire behavior over a 30 to 50-year period without considering mitigation measures such as home hardening, recent wildfire, or fuel reduction efforts.
Full Breakdown
CAL FIRE's Fire Hazard Severity Zone maps designate portions of south Livermore (Wente/Tesla Road vineyards, south Livermore hillsides) and east Livermore (Altamont, Mines Road corridor) as VHFHSZ in the Local Responsibility Area. State Responsibility Area coverage extends into unincorporated Alameda County foothills. Structures in these zones must comply with Chapter 7A of the California Building Code (ignition-resistant construction, Class A roofing, ember-resistant vents, enclosed eaves) and maintain PRC §4291 defensible space. New construction triggers Wildland Urban Interface building requirements.
Frequently Asked Questions
How do I know if my Livermore home is in a VHFHSZ?
Does WUI construction apply to my remodel?
Sources & Official References
Other rules in Livermore
California rules heatmap·Compare Livermore to another location·View the California fire regulations overview
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Wildfire Zones in Nearby Cities
How other cities in Alameda County handle wildfire zones.