Start here: does it cover you?
The answer turns on one distinction almost every other page blurs. In the State Responsibility Area, Zone 0 applies to every building and structure regardless of fire hazard class. In a Local Responsibility Area, it reaches only areas designated Very High — and only once your city or county has adopted that designation by ordinance.
Does the state Zone 0 rule cover your property?
Three questions. This is orientation, not a determination — only the fire agency with jurisdiction over your address can tell you for certain.
Yes — and hazard class doesn't matter. In the State Responsibility Area, Zone 0 applies to all buildings and structures regardless of fire hazard severity classification. You do not need to be in a Very High zone.
This is the part almost every other page gets wrong. If you are in the SRA, stop looking at the hazard map — you are covered either way.
Source: Informative Digest, Notice of Proposed Emergency Action, 20 August 2026. Rule text at 14 CCR 1299.03.
Very likely yes. In a Local Responsibility Area, the state Zone 0 rule applies to occupied structures in areas designated Very High — and your local agency has adopted that designation by ordinance.
Your local agency may also have its own Zone 0 ordinance that is stricter or on a different timeline. Check your jurisdiction →
Probably, but the timing depends on your city or county. The State Fire Marshal recommends hazard zones; your local agency adopts them by ordinance under Gov Code 51179(a), within 120 days of receiving the recommendations.
Until that adoption happens, the designation your property sits in may not yet be the operative one. Call your local fire agency and ask whether the current maps have been adopted.
Not under the state rule. In a Local Responsibility Area, the state Zone 0 regulation reaches only areas designated Very High. High and Moderate zones are outside it.
Two things to check anyway. Your city or county may have adopted its own Zone 0 ordinance with a wider trigger — Ventura County's AB 38 inspection requirement, for example, covers High or Very High. And separately, the insurance discounts for this same work do not depend on your zone at all. See the insurance side →
Not covered by the state Zone 0 rule. If your property is in a Local Responsibility Area and not in any fire hazard severity zone, the regulation does not reach you.
The work still has value — the same measures earn documented insurance discounts regardless of your zone. See the insurance side →
Find this out first — everything else depends on it. The State Responsibility Area is where the state has primary financial responsibility for wildfire protection under PRC 4125. It excludes land inside city limits and federal land. Local Responsibility Areas are incorporated cities and certain unincorporated areas where local agencies provide fire protection.
Two ways to check: look your parcel up in CAL FIRE's Fire Hazard Severity Zone viewer, which shows both the responsibility area and the hazard class, or call the fire agency that would respond to your address and simply ask.
Four deadlines, not two phases
Every summary of this regulation, including the Board's own, describes two phases: three years and five years. The rule text has four separate compliance dates, and the first one lands the day the regulation takes effect.
Due on day one for existing homes. Roof and gutters clear of debris. No firewood stored in Zone 0. No dead or dying tree branches. Live branches at least 10 feet from chimneys. And no live tree branches underneath your eaves.
That last one is not a maintenance chore — for a mature tree close to the house it can mean real money, and it is due immediately rather than in three years. All four tiers, with citations →
Two things nobody is reporting
State enforcement waits on a funding finding
Public Resources Code 4291(h) bars the Office of the State Fire Marshal from changing defensible space inspection practices, forms, or enforcement to implement the ember-resistant zone until the State Fire Marshal posts a written finding that the Legislature has appropriated sufficient resources. The Board's own fiscal statement expects that in the 2027–2028 fiscal year.
So the obligations begin, and state enforcement follows roughly two years later. What that means in practice →
New construction is gated on a document that doesn't exist yet
Under PRC 4291(g)(1) and Gov Code 51186(b)(2)(A), the requirements for new structures do not take effect until the Board updates and posts its defensible space guidance document. "Applies immediately to new construction" is conditional on that publication. More →
The same work pays you back
California requires insurers that price on wildfire risk to discount for specific mitigation measures under 10 CCR 2644.9. The California FAIR Plan's own schedule runs to 16.4% off the wildfire portion of a Dwelling Fire premium. The ten property-level measures map almost exactly onto Zone 0 — so one set of work, and one photo file, serves both.
The regulation also gives you a right most homeowners have never used: when an insurer gives you a wildfire risk score, it must tell you which measures would lower it and the dollar premium reduction each one would produce. How to use that →
Where to next
- Am I covered?SRA vs LRA, and the map question
- The four deadlinesWhat's due when, with rule citations
- What Zone 0 requiresPlants, trees, fences, decks, outbuildings
- ExemptionsHabitat land, noncombustible structures, local alternatives
- What it costsThe state's own estimate: $960 average
- Insurance discountsUp to 16.4%, and your right to a priced list
- Selling a homeAB 38 disclosure and defensible space documentation
- By jurisdictionWhere local rules differ from the state's
- Rule statusAdopted August 19, 2026, tracked as it moves
How this site is sourced. Everything here is read from primary documents: the rule text as filed with the Office of Administrative Law, the Board's Notice of Proposed Emergency Action, the economic impact statement, the insurance regulation, and each jurisdiction's own published guidance. Where those documents disagree with each other — and in a few places they do — the page says so and tells you which one controls.