CA Board of Forestry Zone Zero criteria as of August 2026

What is Zone Zero?

Zone Zero (the Ember-Resistant Zone) covers the first 0 to 5 feet measured immediately from the outside walls of your home, attached structures, and decks. Wildfire research shows that airborne embers—not direct flame fronts—are the primary cause of home ignitions. Clearing this immediate perimeter prevents blowing embers from landing and igniting your house.

What You MUST REMOVE from Zone Zero

Combustible Mulch & Bark: Replace wood chips, bark, or organic mulch with non-combustible materials such as gravel, decorative rock, pavers, or dirt.

Debris & Dead Vegetation: Keep gutters, roofs, and the ground completely free of dry leaves, pine needles, and dead plant matter.
Stored Flammables: Relocate firewood piles, extra lumber, and plastic storage bins at least 5 feet away from the home.
Combustible Attachments: Replace wooden fence sections or gates that attach directly to the home with non-combustible alternatives (e.g., metal) to prevent fire from bridging to the structure.

What Can STAY in Zone Zero

Selected Plants: Low-growing, well-hydrated non-woody plants (like succulents or herbaceous flowers) and maintained lawns are generally allowed. Maintain a vegetation-free gap right next to the exterior wall or eave line.

Mature Trees: Tree removal is generally not required, provided branches are trimmed back at least 10 feet from chimneys and overhead branches are cleared off the roof.
Hardscape & Non-Combustible Items: Concrete patios, stone pathways, metal outdoor furniture, and non-combustible planters.

Implementation Timeline & Phasing

New Construction:

Must comply immediately upon completion.

Existing structures:

Phase 1 (Within 3 Years) Focuses on removing high-risk combustibles: clearing dead leaves/needles, moving firewood, replacing bark/mulch, and clearing roofs/gutters.

Phase 2 (Within 5 Years)Full structural alignment: installing non-combustible fence attachments and establishing permanent 1-foot vegetation-free buffers.

Local fire authorities or High Fire Hazard Severity Zones may enforce stricter deadlines or specific local rules.

Contact your local fire department for regional guidelines.

WHY IS MY INSURANCE COMPANY REQUIRING SOMETHING DIFFERENT?

State Law vs. Private Insurance

State and local fire hazard abatement codes—including the Board of Forestry’s Zone Zero rules—are government safety laws. Private insurance companies, however, operate as independent businesses governed by financial risk models, not state fire codes.

Passing a local fire inspection guarantees you won't receive a citation from the fire department, but it does not force an insurance company to write, renew, or discount a policy.

Key Reasons Insurance Companies Follow Different Rules

Separate Regulatory Oversight: Fire hazard codes are written by CAL FIRE and the Board of Forestry (or county or local fire authorities). Insurance companies are regulated by the California Department of Insurance (CDI). While state and local laws focus on public safety and life preservation, insurance regulations govern financial solvency, pricing, and underwriting standards.
Independent Risk Assessment: Insurers evaluate properties using proprietary risk scores, historical loss data, satellite imagery, and localized wind/topography models. A carrier may determine that a house surrounded by dense brush or situated on a steep canyon remains too risky to cover—even if the homeowner meets minimum state defensible space rules.
Higher Standards for Coverage: Fire codes represent the minimum legal standard to avoid public fines. Insurance carriers frequently demand measures beyond the legal baseline—such as demanding 100+ feet of complete brush clearance, requiring upgraded ember-resistant vents, or refusing coverage if neighboring properties present unmitigated hazards.

How California Insurance Regulations Actually Work

Underwriting Discretion: Under state law, private insurance carriers retain the right to decide which properties they are willing to insure based on their risk appetite.
The "Safer from Wildfires" Discount Mandate: Under California Department of Insurance rules, insurers are required to offer premium discounts to homeowners who perform specific wildfire safety improvements [Send a request via the Contact page more more info]. However, this mandate only governs pricing discounts for existing customers—it does not compel an insurer to issue or renew a policy if they choose to reduce their risk exposure in that area.
Government Code vs. Policy Terms: While failing to comply with county or local fire codes can result in fines or tax liens, failing to satisfy an insurer’s specific underwriting guidelines results in a non-renewal notice or higher premiums.