California Wildfire Zones Explained [Video]

CAL FIRE mapping authority

The California Department of Forestry and Fire Protection (CAL FIRE) designates Fire Hazard Severity Zones (FHSZ) based on vegetation, terrain, fire history, and weather patterns. These zones are classified into three severity levels — Very High, High, and Moderate — and are published separately for State Responsibility Areas (SRA) and Local Responsibility Areas (LRA).

SRA vs LRA

• SRA (State Responsibility Area). Wildlands where the state has primary fire protection responsibility. Most rural and mountain communities fall here.
• LRA (Local Responsibility Area). Cities, suburbs, and unincorporated areas where local fire departments are the lead responders. CAL FIRE maps LRA zones but local agencies adopt them.

Disclosure requirements

Government Code §51183.5 requires sellers to disclose when a property is in a Very High Fire Hazard Severity Zone or a Wildland-Urban Interface Fire Area. Buyers must then be informed about defensible space obligations, building code requirements, and potential insurance limitations. Failure to disclose can delay closing or create post-sale liability.

For a deeper dive, read our articles on fire hazard severity zones and selling a fire-zone home in 2026.

Insurance implications of fire zone designation

Fire zone designation is now the single biggest factor in California property insurance availability. Carriers have pulled out of Very High Fire Hazard Severity Zones across the state, pushing homeowners into the California FAIR Plan as a last resort. The FAIR Plan provides basic fire coverage but typically costs more and covers less than standard policies. Buyers in fire-prone areas should verify insurability before removing contingencies — an uninsurable property cannot close with a conventional mortgage. Early hazard determination through the NHD report gives agents and buyers time to shop the insurance market and, if needed, assemble a FAIR Plan plus difference-in-conditions (DIC) package before the deal falls apart at the lender stage.

Key takeaways

• CAL FIRE designates Fire Hazard Severity Zones at three levels — Very High, High, and Moderate — across both State and Local Responsibility Areas.
• Government Code §51183.5 requires disclosure when a property is in a Very High Fire Hazard Severity Zone or Wildland-Urban Interface Fire Area.
• Insurance availability in fire zones has tightened significantly, making early hazard determination essential for transaction planning.
• AB 38 requires sellers in fire zones to document defensible-space compliance or provide a buyer acknowledgment — an obligation separate from the NHD itself.
• The NHD report identifies fire zone status from CAL FIRE's most current FHSZ maps, giving agents the documentation they need to keep deals on track.