Is my home in a fire zone?

“Fire zone” is a term that means different things to different people. California has at least three overlapping classification systems, and on top of those, every insurance carrier uses its own proprietary scoring. Knowing where your home sits in each one is the difference between being insurable and not.

The official classifications

Fire Hazard Severity Zones (FHSZ)

CAL FIRE classifies parcels in California into a Fire Hazard Severity Zone (Moderate, High, or Very High) based on terrain, vegetation, fire history, and weather. There are two overlapping FHSZ maps:

• State Responsibility Area (SRA): land where CAL FIRE has primary fire-protection responsibility (mostly wildland and rural areas).
• Local Responsibility Area (LRA): land where local agencies have responsibility, typically incorporated cities and towns.

The state maintains the SRA maps; cities and counties maintain LRA maps. CAL FIRE has been updating these maps over the past several years, and many homes that weren’t in a “Very High” zone five years ago are now classified as such. You can look up your address at fire.ca.gov or via your county assessor’s GIS portal.

Wildland-Urban Interface (WUI)

WUI is a separate classification: areas where the built environment meets undeveloped wildland. California Building Code Chapter 7A specifies construction requirements (Class A roof, ember-resistant vents, ignition-resistant siding, etc.) for new construction in WUI areas. Homes built before Chapter 7A took effect are often not WUI-compliant, which matters to some carriers.

Carrier-specific scoring

Here’s the catch: every insurer uses its own proprietary wildfire score on top of the official maps. The big two providers of this data are Verisk and CoreLogic. Their scores combine the official FHSZ data with their own analysis of vegetation density, slope, prevailing winds, distance to fire stations and hydrants, defensible-space inspection data, and historical fire behavior.

That means two homes a half-mile apart can be in the same Very High FHSZ but score differently with the same carrier. One writeable, one declined. The carrier-specific score is the one that actually determines insurability and pricing.

Where to look up your home

• CAL FIRE FHSZ viewer: official state FHSZ classification by address.
• Your county GIS portal: most CA counties expose FHSZ data through their assessor or planning department websites.
• Your current declarations page: many carriers list a “protection class” or “fire score” on the dec page. This is the carrier-specific number, not the official one.
• Verisk / CoreLogic reports: usually only accessible through a broker. Ask if you want to see what the carriers see.

What changes if you’re in a high-hazard zone

Practically, here’s what changes:

• Admitted carriers shrink dramatically. The number of admitted carriers willing to write a home in a High or Very High FHSZ has fallen substantially over the past several years.
• Premiums rise sharply. Compared to a low-hazard home, expect multiples-higher premiums for comparable coverage.
• Wildfire-specific deductibles appear. Some carriers are introducing separate wildfire deductibles ($10K, $25K, or higher) on top of the standard all-other-perils deductible.
• Mitigation matters more. Defensible space, Class A roof, ember-resistant vents, and other hardening earn material credits, sometimes the difference between a yes and a no.
• Inspections become standard. Carriers may require an inspection before binding and at every renewal.

Mitigation that actually moves underwriting

Not all hardening is equal in carriers’ eyes. The items that consistently affect eligibility and pricing:

• Defensible space, Zone 0 (0–5 ft from the structure) kept clear of combustibles. This is the most-watched zone in recent rulemaking.
• Defensible space, Zone 1 (5–30 ft) maintained per CAL FIRE standards.
• Class A roof: asphalt composition, metal, tile, or concrete. Wood-shake roofs are nearly uninsurable in high-hazard areas.
• Ember-resistant vents (1/8” mesh or finer).
• Enclosed eaves and soffits.
• Tempered or dual-pane windows.
• Fire-resistant siding (stucco, fiber cement, etc.) vs. vinyl or wood.
• A clearly maintained access road wide enough for fire apparatus.

Documentation matters. Photos with dates, receipts for the work, a fire-department or third-party inspection certificate: these are what carriers credit. Verbal claims (“we cleared brush last spring”) aren’t enough.

A practical first step

Look up your home’s FHSZ designation. If you’re in a Moderate zone, you have many more options than someone in a Very High zone, but the market has tightened for everyone in fire-exposed California. Start the shopping conversation earlier than you would have a decade ago. If you’re in a High or Very High zone, the path forward is almost always one of the three covered in our 60-day playbook: admitted carrier (when eligible), surplus-lines specialty program, or FAIR + DIC.