Fire Hazard Severity Zones and your California home insurance

If you've been quoted wildly different prices — or declined outright — your Fire Hazard Severity Zone is usually why. Here's what the zones are and how they drive insurance.

Key takeaways

• Fire Hazard Severity Zones (FHSZ) are CAL FIRE's hazard maps: Moderate, High, Very High.
• Insurers treat your zone as a primary input to whether they'll write you and at what price.
• In the highest tiers, the FAIR Plan + DIC is often the practical fallback.
• You can check your address's tier on the map.

What the zones are

CAL FIRE maps wildfire hazard across the state and classifies land into severity zones — Moderate, High, and Very High — using vegetation, terrain, weather, and fire-history modeling. The current maps are the adopted 2024 Fire Hazard Severity Zones, covering both State and Local Responsibility Areas. They reflect the hazard of the land, which is different from your individual home's risk (mitigation can lower the latter).

How your zone affects insurance

Carriers fold your zone into their underwriting:

• Moderate — most standard carriers will still consider the home; price reflects some wildfire load.
• High — fewer carriers write it; expect higher premiums and stricter requirements.
• Very High — the standard market thins out sharply; many homeowners end up on the FAIR Plan plus a DIC policy.

This is why two homes a mile apart can have very different insurance outcomes, and why FAIR Plan penetration is so concentrated in high-hazard counties — over 40% of homes in some Sierra foothill counties.

Check your zone — and what to do

Look up your address on the map; it matches your parcel to the adopted FHSZ tier and shows the FAIR Plan + DIC fallback. If you're in a High or Very High zone:

1. Document mitigation — it can materially change your options (see Safer from Wildfires discounts).
2. Work with a high-risk specialist broker and check which carriers are likely to write you.
3. Keep the FAIR Plan + DIC ready as a backstop.

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Hazard tiers are from CAL FIRE's adopted 2024 Fire Hazard Severity Zones. This is general information, not a quote. Who Will Insure provides estimates and referrals to licensed brokers, and never sells or binds coverage.