Marin County Fire Hazard Severity Zone (FHSZ) and insurance

This is a qualitative county-level overview derived from CAL FIRE wildfire hazard data and companion perils, not a parcel-level score. Check a specific address on the CAL FIRE viewer linked below.

Hazard is not the same as your insurance risk

A Fire Hazard Severity Zone measures long-term physical wildfire hazard to guide building codes and defensible-space rules. It is not an insurer's underwriting score, and the California Department of Insurance has stated that CAL FIRE's maps do not by themselves determine insurance rates or availability. Carriers weigh your roof, your defensible space, your access and water supply, and their own catastrophe models - so a zone designation and a carrier's decision can and do diverge.

We explain that gap in full, including what the 2025 statewide map update changed and why most homes destroyed in the Eaton Fire sat outside the mapped very-high zone, on our California Fire Hazard Severity Zone guide. You can look up any Marin County address on the official CAL FIRE zone viewer.

Wildfire and home insurance in Marin County

Wildfire is often the deciding factor in whether a home can be insured in Marin County. When carriers decline or non-renew here, we turn to surplus lines wildfire markets and California FAIR Plan coverage paired with a difference-in-conditions wrap for broader protection.

Marin County sits in a seismically active area, and because standard home policies exclude earthquakes, separate earthquake coverage is worth considering.

Flooding is a real consideration in Marin County, and since standard home policies exclude flood, separate flood coverage may be needed for exposed properties.

Coastal areas of Marin County add wind, storm, and flood considerations for properties near the shore.

An affluent North Bay county where wooded hillsides, the San Andreas Fault, and coastal flooding all raise premiums. Wildland-urban interface homes here frequently need non-standard placement.

CAL FIRE incident activity in Marin County

Between 2015 and 2026, CAL FIRE recorded 11 tracked incidents listing Marin County. That is a low count by California standards, which is worth knowing: not every part of the state carries the same wildfire exposure, and premiums here reflect that.

The largest tracked incident in Marin County was the Woodward Fire in 2020, which burned 4,929 acres.

Source: CAL FIRE incident record, 2015-2026. These are incidents CAL FIRE responded to or monitored, not every ignition in California, so treat the count as a measure of significant fire activity rather than a complete tally. Acreage attributed to the county excludes multi-county complexes, because CAL FIRE reports acres per incident rather than per county.

FAIR Plan reliance in Marin County

The California FAIR Plan is the state's insurer of last resort - basic fire coverage for homes the standard market will not write. Its policy count is a direct gauge of how hard a county has become to insure.

California FAIR Plan policies in force (residential, commercial, and business owner lines), by county, as of September 2024. Source: California FAIR Plan.

A rising FAIR Plan count does not mean bare-bones coverage is your only option. As an independent broker we still check the admitted and surplus lines markets first, and when the FAIR Plan is the right base we pair it with a difference-in-conditions policy for the theft, liability, and water damage it excludes.

Coverage options in Marin County

• Wildfire and hard-to-insure home coverage
• California FAIR Plan plus difference-in-conditions
• Standard homeowners, condo, and renters coverage

Check your Marin County home insurance options