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California · 2026 update

Wildfire risk in California: how to check your property exposure in 2026

California's 2025 fire season destroyed more than 18,000 structures in the Palisades and Eaton fires alone. This page explains how wildfire risk is calculated across the state, which counties carry the highest exposure, and what every property owner should check before insurance renewal.

Camp Fire 2018 Landsat satellite image — California wildfire smoke plume from Paradise, Butte County
Source: NASA Earth Observatory image by Joshua Stevens, Landsat 8 (Operational Land Imager), November 8, 2018 — Camp Fire, Butte County, California. Via Wikimedia Commons (public domain).
Coverage map

California counties we have analyzed

Every California county has a published, data-backed page built on real Satelife samples inside it. Select a county on the map to open it — or type where you live into the box below. Satelife runs address-level reports statewide; the map marks where we have published the research, not the limit of what we can score.

Regional coverage

Explore wildfire risk by California county

Every one of California's 58 counties has a page — fifteen at a time below, alphabetical. Know where you live already? Search by ZIP, county or town instead.

Satellite locator map of Alameda County, California, with the county boundary outlined

Alameda County

Largest on record: Tesla 2005 · sampled composite 12–76.5

Satellite locator map of Alpine County, California, with the county boundary outlined

Alpine County

Largest on record: Tamarack 2021 · sampled composite 41.8–79.4

Satellite locator map of Amador County, California, with the county boundary outlined

Amador County

Largest on record: Power 2004 · sampled composite 24.3–79.5

Satellite locator map of Butte County, California, with the county boundary outlined and Chico, Oroville, Paradise, Magalia and the 2018 Camp Fire origin near Pulga marked

Butte County

Camp Fire legacy, the Ridge geography, Paradise case study

Satellite locator map of Calaveras County, California, with the county boundary outlined

Calaveras County

Largest on record: Butte 2015 · sampled composite 37.3–81.1

Satellite locator map of Colusa County, California, with the county boundary outlined

Colusa County

Largest on record: Fork 1996 · sampled composite 18.6–83.5

Satellite locator map of Contra Costa County, California, with the county boundary outlined

Contra Costa County

Largest on record: Morgan 2013 · sampled composite 12.7–77.4

Satellite locator map of Del Norte County, California, with the county boundary outlined

Del Norte County

Largest on record: Oak 2017 · sampled composite 15.7–80.9

Satellite locator map of El Dorado County, California, with the county boundary outlined and Grizzly Flats, Pollock Pines, Placerville and the Caldor Fire origin point marked between Placerville and Lake Tahoe

El Dorado County

Caldor Fire legacy, ridge-canyon WUI, Grizzly Flats case study

Satellite locator map of Fresno County, California, with the county boundary outlined

Fresno County

Largest on record: Creek 2020 · sampled composite 17.6–81.3

Satellite locator map of Glenn County, California, with the county boundary outlined

Glenn County

Largest on record: Trough 2001 · sampled composite 18.5–78.6

Satellite locator map of Humboldt County, California, with the county boundary outlined

Humboldt County

Largest on record: Megram 1999 · sampled composite 12.7–78.9

Satellite locator map of Imperial County, California, with the county boundary outlined

Imperial County

Largest on record: Island Lake 2013 · sampled composite 11.7–77.8

Satellite locator map of Inyo County, California, with the county boundary outlined

Inyo County

Largest on record: Oak 2007 · sampled composite 36.1–75.6

Satellite locator map of Kern County, California, with the county boundary outlined

Kern County

Largest on record: Borel 2024 · sampled composite 17.7–82.2

Satellite locator map of Kings County, California, with the county boundary outlined

Kings County

Largest on record: Skyline 1996 · sampled composite 17.7–79.8

Satellite locator map of Lake County, California, with the county boundary outlined

Lake County

Largest on record: Ranch 2018 · sampled composite 17.6–84.1

Satellite locator map of Lassen County, California, with the county boundary outlined

Lassen County

Largest on record: Rush 2012 · sampled composite 33.1–81.1

Satellite locator map of Los Angeles County, California, with the county boundary outlined and Malibu, Los Angeles, Altadena, Pacific Palisades, and the 2018 Woolsey Fire ignition point marked

Los Angeles County

Woolsey & Palisades Fire legacy, Santa Monica Mountains, Malibu case study

Satellite locator map of Madera County, California, with the county boundary outlined

Madera County

Largest on record: Ferguson 2018 · sampled composite 17.6–80.4

Satellite locator map of Marin County, California, with the county boundary outlined

Marin County

Largest on record: Vision 1995 · sampled composite 12.7–73.2

Satellite locator map of Mariposa County, California, with the county boundary outlined

Mariposa County

Largest on record: Ferguson 2018 · sampled composite 41.4–82.2

Satellite locator map of Mendocino County, California, with the county boundary outlined

Mendocino County

Largest on record: Mendenhall 1987 · sampled composite 14.8–80.5

Satellite locator map of Merced County, California, with the county boundary outlined

Merced County

Largest on record: Mercy 1996 · sampled composite 17.5–71.9

Satellite locator map of Modoc County, California, with the county boundary outlined

Modoc County

Largest on record: Steele 2017 · sampled composite 21.3–76.7

Satellite locator map of Mono County, California, with the county boundary outlined

Mono County

Largest on record: Cannon 2002 · sampled composite 28–76.9

Satellite locator map of Monterey County, California, with the county boundary outlined

Monterey County

Largest on record: Basin Complex 2008 · sampled composite 16–77.2

Satellite locator map of Napa County, California, with the county boundary outlined and Calistoga, Deer Park, St. Helena, Napa, and the 2020 Glass Fire origin point marked

Napa County

Glass Fire legacy, wine-country WUI, Calistoga case study

Satellite locator map of Nevada County, California, with the county boundary outlined and Grass Valley, Nevada City, Alta Sierra and Truckee marked across the western foothills and the Sierra crest

Nevada County

Quiet fire record, full standing fuel load, Alta Sierra case study

Satellite locator map of Orange County, California, with the county boundary outlined

Orange County

Largest on record: Freeway_Complex 2008 · sampled composite 16.1–84.1

Satellite locator map of Placer County, California, with the county boundary outlined and Auburn, Colfax, and Foresthill marked near the 2022 Mosquito Fire origin point at Oxbow Reservoir

Placer County

Mosquito Fire legacy, Foresthill Divide geography, Foresthill case study

Satellite locator map of Plumas County, California, with the county boundary outlined

Plumas County

Largest on record: Dixie 2021 · sampled composite 34.5–82

Satellite locator map of Riverside County, California, with the county boundary outlined

Riverside County

Largest on record: Esperanza 2006 · sampled composite 15.5–84.7

Satellite locator map of Sacramento County, California, with the county boundary outlined

Sacramento County

Largest on record: Latrobe 2017 · sampled composite 13.4–65.6

Satellite locator map of San Benito County, California, with the county boundary outlined

San Benito County

Largest on record: Rock Springs VMP 2019 · sampled composite 21.1–83.8

Satellite locator map of San Bernardino County, California, with the county boundary outlined

San Bernardino County

Largest on record: York 2023 · sampled composite 16.7–85.8

Satellite locator map of San Diego County, California, with the county boundary outlined and Ramona, San Diego Country Estates, Julian, Poway, Alpine and the City of San Diego marked

San Diego County

Cedar & Witch Fire legacy, Santa Ana exposure, Ramona case study

Satellite locator map of San Francisco County, California, with the county boundary outlined

San Francisco County

Largest on record: Elcamino 1988 · sampled composite 5–60.4

Satellite locator map of San Joaquin County, California, with the county boundary outlined

San Joaquin County

Largest on record: Corral 2009 · sampled composite 10.8–70.9

Satellite locator map of San Luis Obispo County, California, with the county boundary outlined

San Luis Obispo County

Largest on record: Gifford 2025 · sampled composite 8.8–85.1

Satellite locator map of San Mateo County, California, with the county boundary outlined

San Mateo County

Largest on record: Cloverdale Vmp 2010 · sampled composite 5–70

Satellite view of the Montecito foothills below the Santa Ynez Mountains in Santa Barbara County, California, the canyons that burned in the 2017 Thomas Fire and fed the 2018 debris flow

Santa Barbara County

Thomas Fire & Montecito debris-flow legacy, sundowner winds, Montecito case study

Satellite locator map of Santa Clara County, California, with the county boundary outlined

Santa Clara County

Largest on record: Lick 2007 · sampled composite 13.4–82.5

Satellite locator map of Santa Cruz County, California, with the county boundary outlined

Santa Cruz County

Largest on record: Lockheed 2009 · sampled composite 8.7–78.4

Satellite locator map of Shasta County, California, with the county boundary outlined

Shasta County

Largest on record: Carr 2018 · sampled composite 20–82.5

Satellite locator map of Sierra County, California, with the county boundary outlined

Sierra County

Largest on record: Cottonwood 1994 · sampled composite 26.4–82.7

Satellite locator map of Siskiyou County, California, with the county boundary outlined

Siskiyou County

Largest on record: Haypress (River Complex) 2021 · sampled composite 23.9–85.3

Satellite locator map of Solano County, California, with the county boundary outlined

Solano County

Largest on record: Miller 1988 · sampled composite 6.7–82.6

Satellite locator map of Sonoma County, California, with the county boundary outlined and Santa Rosa, Coffey Park, and the 2017 Tubbs Fire path marked

Sonoma County

Tubbs Fire legacy, wind-driven suburban WUI, Coffey Park case study

Satellite locator map of Stanislaus County, California, with the county boundary outlined

Stanislaus County

Largest on record: Canyon 2006 · sampled composite 13.4–77.9

Satellite locator map of Sutter County, California, with the county boundary outlined

Sutter County

Largest on record: Butte 2018 · sampled composite 13.4–75.9

Satellite locator map of Tehama County, California, with the county boundary outlined

Tehama County

Largest on record: Doe 2020 · sampled composite 18.4–85.4

Satellite locator map of Trinity County, California, with the county boundary outlined

Trinity County

Largest on record: Hopkins 2020 · sampled composite 46.1–85.2

Satellite locator map of Tulare County, California, with the county boundary outlined

Tulare County

Largest on record: Castle 2020 · sampled composite 15.6–80.9

Satellite locator map of Tuolumne County, California, with the county boundary outlined

Tuolumne County

Largest on record: Rim 2013 · sampled composite 37.1–83.6

Satellite view of the Ojai Valley in Ventura County, California, with the town, surrounding orchards, and the foothills that burned in the 2017 Thomas Fire

Ventura County

Thomas Fire ignition, Ojai Valley geography, Ojai case study

Satellite locator map of Yolo County, California, with the county boundary outlined

Yolo County

Largest on record: County 2018 · sampled composite 13.4–83.2

Satellite locator map of Yuba County, California, with the county boundary outlined

Yuba County

Largest on record: Cascade 2017 · sampled composite 18.9–82.5

Local context

California's wildfire reality in 2025–2026

The Palisades and Eaton fires (January 2025) destroyed more than 18,000 structures across Los Angeles County — the most destructive January fires in California history. They follow the 2018 Camp Fire (153,336 acres, Butte County, 85 fatalities) and the 2017 Tubbs Fire (Sonoma County, 5,636 structures).

Statewide, acreage burned and structures lost trended sharply upward between 2017 and 2025, driven by drought cycles and Wildland-Urban Interface expansion. The peak risk window runs late May through November, with the most destructive events typically falling between August and October.

The CAL FIRE Fire Hazard Severity Zone (FHSZ) framework classifies land as Moderate, High, or Very High — and is the basis for both building-code requirements and insurer underwriting decisions.

Sources: CAL FIRE Incident Archive · USGS · NIFC annual reports.

Terrain & vegetation

Why some California properties burn and others don't

Three vegetation types dominate California fire risk: chaparral (Southern California foothills), oak woodland (Central Coast and Sierra foothills), and mixed conifer (Sierra Nevada and Klamath ranges). Each has a different fuel-moisture cycle and flame length under fire weather.

Terrain drives ignition probability and spread rate. South-facing slopes dry out faster, steep slopes accelerate fire run, and Wildland-Urban Interface boundaries — where structures meet wildland fuels — are where most structure loss happens. Add Santa Ana winds (Southern California) or Diablo winds (Bay Area), and the same terrain becomes a different risk profile within hours.

Insurance

What California wildfire risk means for your insurance

California FAIR Plan policies surpassed 400,000 in 2024 — roughly 100% increase versus 2020, and approximately 20× the population the plan was designed for. State Farm non-renewed about 72,000 California policies in 2023; Allstate, Farmers, and AIG imposed similar restrictions.

SB 1060 (in force 2025) requires carriers to offer premium discounts for verified mitigation, turning a property-level wildfire report from a discretionary purchase into documentation with direct financial consequences. For carrier-by-carrier rules, FAIR Plan coverage details, and the SB 1060 discount path, see California wildfire insurance.

California's insurance crisis is no longer about whether your ZIP code is risky. It is about whether you can prove, at the property level, that yours is the mitigated house on the street.

See also: California wildfire insurance.

Sources: California Department of Insurance (CDI) Annual Reports · SB 1060 text.

Real estate

How wildfire risk affects California property value

California Civil Code §1103 already requires sellers to disclose Natural Hazard zones at the point of sale. As insurance availability tightens, fire-zone status increasingly becomes a closing-risk variable rather than a paperwork item — buyers who cannot bind insurance cannot close.

Investors evaluating California fire-zone properties face three real options: walk away, negotiate price for the insurance gap and mitigation cost, or buy and mitigate to qualify for the SB 1060 rebate path. The third path — when documented through a Satelife report — converts mitigation cost into a measurable insurance benefit.

See also: California real estate wildfire risk.

What a buyer, seller, or lender sees in the report

The same composite score (0–100) and eight-layer breakdown — hazard zone, AI vision read of the parcel, terrain, fire weather, vegetation/fuel, road access, fire history, and fire-spread simulation — becomes the page a listing agent attaches to a disclosure packet, or a buyer hands their insurance broker before writing an offer contingent on coverage.

Excerpt from a Satelife wildfire risk report: composite score and per-layer breakdown showing Hazard, Vision, Terrain, USFS WRC, Fire Weather, Vegetation, Road access, Fire history and Fire-spread simulation, each scored 0–100 and weighted into one composite
Report excerpt — per-layer contributions from a real Satelife Wildfire Risk Report (El Dorado County, CA, July 2026).
Get your California property report →
Risk reduction

What California homeowners should do this season

CAL FIRE's defensible-space framework defines three zones: Zone 0 (0–5 ft, ember-resistant zone, no combustibles), Zone 1 (5–30 ft, lean-clean-green), and Zone 2 (30–100 ft, reduced fuel zone). Each zone has specific maintenance requirements; documented compliance is what underwriters and the SB 1060 mitigation discount process accept as evidence.

Annual review is the rule, not the exception. Vegetation grows back, weather changes, and home-hardening choices (vents, eaves, roofing) interact with the surrounding fuel bed. A property that passed defensible-space inspection in 2024 is not necessarily compliant in 2026.

Where to go next

California wildfire risk by topic

FAQ

Frequently asked questions about California wildfire risk

Is my house in a fire zone in California?

Start with the CAL FIRE Fire Hazard Severity Zone (FHSZ) viewer using your address. The viewer returns Moderate, High, or Very High classifications. For a property-level risk score that incorporates terrain, vegetation, fire history, and home-hardening signals — not just the FHSZ band — run a Satelife address-level report.

How is California wildfire risk calculated?

Satelife combines CAL FIRE FHSZ designations, USGS terrain and vegetation layers, NOAA fire-weather data, and First Street exposure modeling into a single property-level risk score. The full data-source list and weighting logic are documented on the methodology page.

Which California counties have the highest wildfire risk in 2026?

Los Angeles, San Diego, Sonoma, Napa, El Dorado, and Placer carry the largest combination of high-VHFHSZ acreage, structure density at the WUI, and post-2017 loss totals.

Does FAIR Plan cover my California home?

California FAIR Plan is the insurer of last resort and is available statewide. It covers basic fire perils with specific policy limits and surcharges, and is generally more expensive than admitted-market coverage.

Can I lower my California wildfire insurance premium?

Yes — under SB 1060, in force since 2025, California carriers must offer premium discounts for verified wildfire mitigation. A Satelife mitigation report documents which actions you completed and is structured to be accepted in the carrier discount workflow.

Get your California wildfire risk report

PDF + property-level risk score + mitigation action plan you can hand to your insurance broker. Address-level, not ZIP-level.

Start with your address →