Lake County, CA Fire Regulations: Wildfire Zones (2026)

Lake County is one of California's most fire-prone counties, with a recent history that includes the 2015 Valley Fire (Middletown and Cobb), the 2018 Mendocino Complex/Ranch Fire, and the 2020 LNU Lightning Complex. CAL FIRE designates Fire Hazard Severity Zones (FHSZ) under Government Code 51178, classifying land as Moderate, High, or Very High based on fuel loading, slope, fire weather, and wind-driven spread. In the State Responsibility Area (SRA)—land where the state is responsible for wildfire protection—CAL FIRE's updated maps classify roughly 366,812 acres of Lake County as Very High, about 92% of the county's SRA acreage. Updated Local Responsibility Area (LRA) maps cover unincorporated Lake County and the cities of Clearlake and Lakeport, with a public-comment period that opened February 12, 2025. Local agencies cannot lower a zone's threat level below CAL FIRE's designation, only match or raise it. These zones carry real obligations: defensible space under Public Resources Code 4291 (100 feet around structures in SRA), the county's Hazardous Vegetation Abatement Ordinance (Ord. 3082), and Wildland-Urban Interface (WUI) building standards—Chapter 7A of the California Building Code—requiring ignition-resistant construction for new and renovated buildings. The Lake County Community Risk Reduction Authority, a joint powers authority of the county and both cities, coordinates the FHSZ rollout and home-hardening programs.