Altadena, CA Fire Regulations: Wildfire Zones (2026)
Key Facts
- Authority
- CalFire FHSZ Maps + LA County Title 32
- Construction Standard
- CBC Chapter 7A in VHFHSZ
- Disclosure
- AB 38 required pre-2010 homes
- Eaton Fire
- January 2025. Altadena devastated
Summary
Most of Altadena sits in CalFire-mapped Very High and High Fire Hazard Severity Zones: the January 2025 Eaton Fire destroyed thousands of structures here. Properties in these zones face heightened defensible-space, ember-resistant construction, and disclosure requirements.
mandated mapping across California under the California Public Resources Code 4201-4204, encompassing all State Responsibility Areas (SRA). What are Fire Hazard Severity Zones? The State Fire Marshal is mandated to classify lands within State Responsibility Areas into Fire Hazard Severity Zones (FHSZ). Fire Hazard Severity Zones fall into one of the following classifications: Moderate High Very High The California laws that require Fire Hazard Severity Zones include California Public Resources Code 4201-4204, California Code of Regulations Title 14, Section 1280 and California Government Code 51175-89. Frequently Asked Questions FAQ Document (PDF) FAQ Document (PDF) (Spanish) Examples of FHSZ State Minimum Mitigation Requirements Explore Fire Hazard Severity Zones The Fire Hazard Severity
Full Breakdown
The 2024 CalFire updated Fire Hazard Severity Zone maps significantly expanded VHFHSZ coverage in Altadena and the San Gabriel foothills. Properties in VHFHSZ must comply with Chapter 7A of the California Building Code (ignition-resistant exterior construction, ember-resistant vents, Class A roof) and the 200-foot defensible space rule. Sellers must provide an AB 38 Fire Hazard Disclosure for properties built before 2010. New STRs in these zones face additional posting requirements under LA County Code 7.96.060.O.
Violations & Fines
Failure to comply with defensible-space and ignition-resistant construction can prevent issuance of building permits, certificates of occupancy, and insurance renewal.
Frequently Asked Questions
Is Altadena in a fire hazard zone?
Sources & Official References
Other rules in Altadena
California rules heatmap·Compare Altadena to another location·View the California fire regulations overview
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Wildfire Zones in Nearby Cities
How other cities in Los Angeles County handle wildfire zones.