Alameda County Fire Hazard Severity Zone (FHSZ) and insurance
CAL FIRE wildfire hazard for Alameda County, California, how physical hazard differs from an insurer's risk assessment, and your home coverage options.
| Wildfire hazard (CAL FIRE FHSZ) | Moderate |
|---|---|
| Earthquake exposure | High |
| Flood exposure | Yes |
| Coastal exposure | Yes |
| Wind-driven fire risk | No |
| Region | Bay Area |
| County seat | Oakland |
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 Alameda County address on the official CAL FIRE zone viewer.
Wildfire and home insurance in Alameda County
Parts of Alameda County carry moderate wildfire exposure, especially near the wildland-urban interface. Some homes are standard-market, while others near brush and open hills need non-standard or FAIR Plan solutions.
Alameda 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 Alameda County, and since standard home policies exclude flood, separate flood coverage may be needed for exposed properties.
Coastal areas of Alameda County add wind, storm, and flood considerations for properties near the shore.
One of the most populous Bay Area counties, home to Oakland and Berkeley. The Hayward Fault runs through it, and the East Bay hills carry real wildfire exposure while the bay shoreline adds flood risk.
Major recent wildfires in Alameda County
These are among the most significant wildfires CAL FIRE has recorded in Alameda County. They are why parts of the county are mapped at High or Very High hazard - and why some homes here are hard to place in the standard market.
| Fire | Year | Acres | Structures destroyed |
|---|---|---|---|
| Tunnel Fire (Oakland Hills) - 25 deaths; for decades the most destructive wildfire in state history | 1991 | 1,600 | 2,900 |
| SCU Lightning Complex * - Stanislaus, Santa Clara, Alameda, Contra Costa, and San Joaquin counties | 2020 | 396,625 | 225 |
* Incident total spans more than Alameda County. Acres burned and structures destroyed are CAL FIRE incident totals.
The hazard concentrates in the East Bay hills - the Oakland and Berkeley hills and the Diablo Range wildland edges above Fremont and Livermore.
CAL FIRE incident activity in Alameda County
Between 2015 and 2026, CAL FIRE recorded 69 tracked incidents listing Alameda County. That is a moderate level of recorded activity for a California county.
The largest tracked incident touching Alameda County was the SCU Lightning Complex in 2020. It burned 396,624 acres in total, though that figure spans every county the fire reached, not Alameda County alone.
| Year | Incidents |
|---|---|
| 2015 | 5 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 8 |
| 2019 | 9 |
| 2020 | 3 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 15 |
| 2025 | 11 |
| 2026 | 7 |
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 Alameda 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 Alameda County
- Wildfire and hard-to-insure home coverage
- California FAIR Plan plus difference-in-conditions
- Standard homeowners, condo, and renters coverage
Sources
- CAL FIRE Office of the State Fire Marshal - Fire Hazard Severity Zones
- CAL FIRE Fire Hazard Severity Zone Viewer (official address lookup)
- CAL FIRE - Top 20 Largest and Most Destructive California Wildfires; Incident Archive
- California FAIR Plan - policies in force by county (as of 9/30/2024)
- California Department of Insurance
- California FAIR Plan Association
Alameda County FHSZ FAQ
Is Alameda County in a Fire Hazard Severity Zone?
Yes. CAL FIRE maps parts of Alameda County as High or Very High Fire Hazard Severity Zones, especially in the wildland-urban interface.
What was the worst wildfire in Alameda County?
The most destructive recent wildfire in Alameda County was the 1991 Tunnel Fire in the Oakland Hills, which killed 25 people and destroyed nearly 3,000 homes. CAL FIRE incident records list its acreage and the number of structures destroyed alongside the county's other major fires.
Does a Fire Hazard Severity Zone set my insurance rate in Alameda County?
No. A CAL FIRE zone classifies long-term physical wildfire hazard for planning and building rules, not insurance pricing, and the California Department of Insurance has stated the maps do not by themselves determine rates or availability. Carriers price each Alameda County property on its own roof, defensible space, access, and their own catastrophe models.
Can I still get homeowners insurance in Alameda County?
Yes. As an independent broker we shop admitted carriers writing Alameda County, then surplus lines wildfire markets and the California FAIR Plan paired with a difference-in-conditions wrap when a home is hard to place in the standard market.
How many wildfires does Alameda County get?
CAL FIRE recorded 69 tracked incidents listing Alameda County between 2015 and 2026, with its busiest year being 2024. That covers the fires CAL FIRE responded to or monitored rather than every ignition, so read it as a measure of significant activity.
What was the largest wildfire in Alameda County?
The largest tracked incident touching Alameda County was the SCU Lightning Complex in 2020, at 396,624 acres. That fire crossed county lines, so the acreage covers every county it reached, not Alameda County alone.
How many California FAIR Plan policies are in Alameda County?
As of September 2024, Alameda County had 6,774 California FAIR Plan policies in force across all lines, up from 2,333 in 2020 - a sign of how far the standard market has pulled back. The FAIR Plan is the insurer of last resort; a broker can still check admitted and surplus lines options first.
Does the California FAIR Plan cover Alameda County?
Yes. The California FAIR Plan is available statewide, including Alameda County, as a last-resort option for fire coverage when the standard market declines. It is typically paired with a difference-in-conditions policy for the theft, liability, and water damage the FAIR Plan does not include.
Insuring a home in Alameda County?
Tell us what you need and a licensed California broker will reach out with real options. Simple situation or complicated one, we shop it the same way.
Prefer to talk? Call (916) 469-5253.