I need to comply with Zone 0 by February 2027. Here’s what it actually requires and how to get there.
You’ve heard about the Zone 0 deadline. You may have gotten a notice, read about it in the news after the LA fires, or heard it from a neighbor. Whatever brought you here: the deadline is real, the requirement has teeth, and most homeowners in San Diego’s East County don’t fully understand what Zone 0 actually requires them to do. This page gives you the plain facts, the science, and a clear action sequence.
Deadline: Plan for February 2027 — Act now
AB 3074 (2020) established Zone 0 as a statewide standard. Governor Newsom’s Executive Order N-18-25 (February 2025) directed the Board of Forestry to finalize Zone 0 regulations by December 31, 2025. California is moving toward statewide Zone 0 enforcement — February 2027 is the planning deadline homeowners should be working toward for existing structures. In San Diego County, Zone 0 is already locally codified under Ordinance 10927 Section 4907.9.1, making it a current, enforceable requirement in unincorporated San Diego County regardless of when statewide rules are finalized. Verify current statewide enforcement details directly with CAL FIRE at (619) 579-3200.
What Zone 0 actually is — and why it was created
Zone 0 is the 0–5 foot buffer immediately surrounding your home, attached structures, decks, and stairs. The legal name is the “ember-resistant zone.” Unlike Zones 1 and 2 — which reduce the amount of vegetation available to carry fire — Zone 0 is designed to intercept embers that land directly against or on your home.
Research consistently shows embers are the dominant ignition source in wildfire home losses. In the 2007 Witch Creek Fire in San Diego’s East County — the same communities CWD serves — two out of three homes were ignited by wind-dispersed embers, not the fire front itself. Work by Dr. Jack Cohen at the USFS Missoula Fire Sciences Lab established that a home can survive a nearby wildfire if the immediate surroundings don’t provide the ember landing pad that completes the ignition chain. IBHS research consistently shows that an ember-resistant 0–5 foot buffer can materially reduce a home’s ignition risk.
Zone 0 exists because the 5 feet around your home are more important to your home’s survival than the 95 feet beyond it.
What Zone 0 requires — specifically
Ground surface (0–5 feet from structure)
San Diego County Ordinance 10927 Section 4907.9.1 requires the ground within 5 feet of your home, deck, stairs, and attached structures to be covered with continuous noncombustible material.
Materials that satisfy Zone 0: concrete, pavers, gravel, decomposed granite (DG), bare mineral soil.
Materials that do not satisfy Zone 0: bark mulch, wood chip mulch, rubber mulch (regardless of what the packaging states about fire resistance), shredded wood of any kind, and organic ground cover. Combustible mulch against a foundation is the most common Zone 0 violation inspectors find on East County properties — and one of the cheapest to fix.
Vegetation
San Diego County Ordinance 10927 requires the Zone 0 area to be free of live and dead plant material that would provide an ignition pathway to the structure. Ornamental grasses, drought-stressed or dormant plantings, and accumulated dead material left in place are code violations under current local requirements. High-resin species including rosemary, juniper, manzanita, and lavender are among the highest-ignition-risk plants when placed near a structure — fire behavior research shows these species ignite readily from ember contact and can sustain combustion long enough to ignite adjacent structural materials. Keep them out of Zone 0 entirely.
Fencing
Wood fencing attached to your home or within the Zone 0 perimeter is a code violation under San Diego County Ordinance 10927. Wood acts as a direct fire wick into the structure — this is one of the most dangerous and most easily corrected Zone 0 failures. The fix is a noncombustible transition section (metal or masonry) where the fence meets or enters the Zone 0 perimeter. A full fence replacement is not required. This also qualifies for the Safer from Wildfires Immediate Surroundings discount.
Decks and under-deck clearance
Attached decks are part of the Zone 0 perimeter. Combustible materials stored under decks — firewood, furniture, equipment, organic debris — create an enclosed combustion chamber directly adjacent to the structure. Under-deck spaces must be clear or enclosed with noncombustible material.
Gutters
Gutters filled with leaf litter, pine needles, or debris are one of the primary ember ignition points identified in wildfire structure-loss research. Metal gutters with noncombustible gutter guards are the preferred standard. At minimum, gutters must be cleared before fire season and maintained throughout. This is also a Safer from Wildfires Immediate Surroundings discount factor.
What to do — in order
Walk your Zone 0 perimeter today
Start at your front door and walk the entire perimeter of your home, staying within 5 feet of the foundation wall. Look at the ground surface, every plant, every fence connection, and every deck or stair. Note what is combustible. This walkthrough takes 10 minutes and gives you a complete picture of your Zone 0 violations.
Address the highest-risk items first
Priority order for Zone 0 remediation: (1) Remove combustible mulch and replace with DG, gravel, or pavers — this is cheap, fast, and one of the highest-leverage actions you can take; (2) Cut or move any high-resin plants in Zone 0; (3) Install a noncombustible fence transition section where any wood fence meets the structure; (4) Clear under-deck areas of combustible materials; (5) Clean gutters and evaluate material.
Document everything with photos
Before-and-after photos of every Zone 0 change you make are your evidence file for two purposes: insurance negotiations (Safer from Wildfires discounts require documented completion) and any future dispute with an inspector or insurer about your compliance status. Take geotagged photos from your phone with the date stamp visible. Store them somewhere you can retrieve them quickly.
Request your insurer’s wildfire risk score
Under California’s Safer from Wildfires regulation (Insurance Code 2644.9), you have the legal right to request your wildfire risk score from your insurer at any time. After completing Zone 0 work, request a score re-evaluation in writing. Provide your before/after photo documentation. If you believe the score doesn’t reflect your completed mitigation, you have the right to formally appeal it. If the appeal is denied, contact the California Department of Insurance at 800-927-4357.
Investigate AB 888 grant assistance
AB 888 — the California Safe Homes Act, effective January 1, 2026 — established a grant program administered by the California Department of Insurance to help qualifying homeowners cover the cost of Zone 0 noncombustible zone creation and fire-safe roof replacement. If you are on the FAIR Plan or in a lower-income bracket, you may qualify. Contact the CDI at 800-927-4357 or insurance.ca.gov.
Plan for the IBHS Wildfire Prepared Home designation
The IBHS Wildfire Prepared Home (WPH) Base designation requires a completed Zone 0 as a foundational element. Achieving WPH Base designation is the strongest documented credential for accessing voluntary insurance markets and earning the largest Safer from Wildfires discounts. The process involves a $125 fee, photo submission to IBHS, and a third-party evaluation. Total timeline: approximately 6–8 weeks from assessment to certificate. Start at wildfireprepared.org.
Key things to know
San Diego County is already ahead of the state. California is moving toward statewide Zone 0 requirements — February 2027 is the planning deadline homeowners should treat as real for existing structures. San Diego County’s Consolidated Fire Code (Ordinance 10927 Section 4907.9.1) already codifies Zone 0 as a current, enforceable local requirement. If your property is in unincorporated San Diego County, Zone 0 compliance is not a future planning goal — it is in effect now. CAL FIRE San Diego Unit inspectors and local fire protection districts flag Zone 0 violations during defensible space inspections today. For current statewide enforcement details, verify directly with CAL FIRE at (619) 579-3200 or fire.ca.gov.
Zone 0 applies to every structure on your property. The Zone 0 perimeter applies to your main home and to every attached structure — decks, stairs, covered patios, attached garages, and in some interpretations, sheds and outbuildings that present ignition risk to the main structure. If you have multiple structures, walk each one separately.
Zone 0 alone isn’t enough. Zone 0 addresses ember ignition. Zones 1 and 2 address fire approach and the fuel available to carry fire toward your structure. Both are required under PRC 4291 and the San Diego County Fire Code. Zone 0 is the highest priority for ignition prevention; Zones 1 and 2 are what slow or redirect a fire front before it reaches your structure. A complete defensible space strategy addresses all three.
Cal Wildfire Defense
Know exactly what your Zone 0 requires — and get it documented.
A professional wildfire risk assessment from Cal Wildfire Defense evaluates your entire Zone 0 against current San Diego County and state requirements — ground surface, vegetation, fencing, under-deck condition, gutters, and structural connections — and produces a written, photo-documented compliance gap report. Fire-informed crews can execute Zone 0 remediation: gravel and DG replacement, vegetation removal, fence section replacement, and documentation for insurance submission.
This page provides educational context, not legal or insurance advice. Zone 0 requirements, enforcement timelines, and local ordinance details may change. Verify current statewide requirements with CAL FIRE at (619) 579-3200 or fire.ca.gov, and local requirements with your fire agency, before acting. Last reviewed April 2026.