Fire Regulations in Altadena, CA (2026)
2 verified fire regulations for Altadena, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Brush Clearance
Altadena is largely in a Very High Fire Hazard Severity Zone. LA County Fire requires year-round brush clearance within 200 feet of any structure and 10 feet of combustible fences and roadways.
Altadena Brush Clearance (LA County Fire Code)
Some RestrictionsCal. Pub. Resources Code Sec. 4291 (Defensible Space - 100-Foot Clearance Requirement)
4291. (a) A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall at all times do all of the following: (1) (A) Maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line, except as provided in subparagraph (B). The amount of fuel modification necessary sha...
Wildfire Zones
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.
Altadena Wildfire Zones (CalFire VHFHSZ + LA County)
Some RestrictionsCal. OSFM - Fire Hazard Severity Zones (Cal. Pub. Resources Code Sec. 4201-4204; Gov. Code 51175-89)
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...
Looking for Los Angeles County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Altadena city rules.
Fire Regulations in Los Angeles County →