Coverage
Does Zone 0 apply to your property?
The answer turns on a distinction most coverage blurs: the rule works differently in State and Local Responsibility Areas, and in one of them your fire hazard class is irrelevant.
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.
The rule that almost every other page gets wrong
The Board's Informative Digest states it plainly. The regulations apply to occupied structures in those parts of the Local Responsibility Area designated as Very High Fire Hazard Severity Zones — and to all buildings or structures within the State Responsibility Area, regardless of fire hazard severity classification.
In the SRA, hazard class does not matter. Moderate, High, Very High, unclassified — if the parcel is in the State Responsibility Area, Zone 0 applies. You do not need to find yourself on a hazard map at all.
Nearly every vendor page and several news write-ups say "SRA or Very High LRA" in a way that implies you need a Very High designation either way. You do not.
What the two areas are
The State Responsibility Area is defined by Public Resources Code 4125 as the portion of California where the state has primary financial responsibility for preventing and suppressing wildfires. It excludes land inside city limits and land under federal ownership.
Local Responsibility Areas are incorporated cities and certain unincorporated county areas — districts where local fire agencies provide protection.
Federal land is governed by federal law and is outside this rulemaking entirely.
The map question in the LRA
If you are in a Local Responsibility Area, being on a Very High map is necessary but the timing has a wrinkle that no vendor page addresses.
The State Fire Marshal recommends fire hazard severity zones under Government Code 51178. Your local agency then designates them by ordinance under Government Code 51179(a), within 120 days of receiving the recommendations. Within 30 days of adopting, the agency must send its ordinance and map to the Board of Forestry under 14 CCR 1280.02(a).
So there is a recommended map and an adopted map, and they are not the same thing. The Office of the State Fire Marshal's own guidance tells people to contact their local jurisdiction for information about a specific area in the Local Responsibility Area — precisely because the state does not hold the answer.
What to actually ask. Call the fire agency that would respond to your address and ask two questions: is my parcel in a Very High Fire Hazard Severity Zone, and has the current map been adopted by ordinance? The second question is the one nobody thinks to ask, and it is the one that determines whether the designation is operative.
How to check your parcel
- Look it up on CAL FIRE's Fire Hazard Severity Zone viewer. It shows both the responsibility area and the hazard class. The SRA maps have been in effect since 1 April 2024. The updated LRA maps were released in four phases through 24 March 2025.
- Note which responsibility area you are in first. If it says SRA, you are done — you are covered, and the hazard class is beside the point.
- If it says LRA, note the hazard class. Only Very High triggers the state Zone 0 rule.
- Then call your local fire agency to confirm the designation has been adopted, and to ask whether they have their own Zone 0 ordinance running on a different timeline.
Split parcels
If your parcel contains more than one hazard rating, how that resolves is a local decision and it varies. Ventura County applies the highest, most restrictive rating to the entire property under its Administrative Ruling 26-804. Other agencies handle it differently. Ask.
What counts as a structure
Both halves of the regulation define this carefully, and the definitions differ slightly.
- In the LRA an Occupied Structure is anything constructed for the support, enclosure, shelter or protection of persons, animals or property, with a permanent roof supported by walls or posts resting on the ground.
- In the SRA the equivalent term is Building or Structure, defined in materially the same way.
- Both include an attached deck, stairs or pergola — and both count a self-supporting deck, stairs or pergola as attached if it sits within one foot of the structure.
- Neither includes patios made of noncombustible material.
- An Outbuilding — under 120 square feet and not used for human habitation — is not a structure for this purpose, but has its own rule. See requirements →
Your neighbour cannot put you out of compliance
A provision that appears in both halves and has gone almost entirely unreported: the addition of any structure on a neighbouring property, including an accessory dwelling unit as defined in Government Code 66313, shall not require you to create additional defensible space on your own property, and shall not result in you being found out of compliance.
If a neighbour builds an ADU near your line, your obligations do not change.
14 CCR 1298.04(a) and 1299.03(c).
Rules where you live
- All jurisdictionsWhy local rules differ, and how to find yours
- City of San DiegoMoved first — existing homes from February 2027
- Ventura County FPDHigh and Very High zones, free AB 38 inspection
Sources: Informative Digest, Board of Forestry Notice of Proposed Emergency Action, 20 August 2026; 14 CCR 1298.02, 1298.04(a), 1299.02, 1299.03(c); Public Resources Code 4125; Government Code 51178, 51179; 14 CCR 1280.02(a); Office of the State Fire Marshal Fire Hazard Severity Zones guidance; Ventura County Fire Department Administrative Ruling 26-804.