Clayton's wildfire map changed in 2025, and it now shapes three parts of a sale: the disclosure, a defensible space inspection and the insurance quote. Under the new local maps, adopted by the Contra Costa County Fire Protection District and effective July 10, 2025, much of Clayton is classified as a Very High Fire Hazard Severity Zone.
Here is what changed, what a seller has to provide, and the insurance questions I would get answered before a buyer removes contingencies.
What changed with Clayton's fire hazard maps?
The State Fire Marshal released updated Fire Hazard Severity Zone maps for local responsibility areas in phases in early 2025. Clayton's map, dated February 24, 2025, shows Very High, High and Moderate zones. In the Fire District's February 2025 summary of the recommended maps, about 1,300 acres of Clayton were classified Very High, where the previous 2011 local map showed none.
Contra Costa County Fire Protection District, which serves Clayton, adopted the maps with an effective date of July 10, 2025. To see where a specific address falls, use the district's map page or the state's hazard viewer.
What does a Clayton seller have to disclose?
Two separate requirements apply:
- The Natural Hazard Disclosure. California Civil Code 1103.2 requires the seller to disclose whether the property is in a High or Very High Fire Hazard Severity Zone, and notes that the owner is subject to the defensible space rules in Government Code 51182.
- Defensible space documentation. Civil Code 1102.19 applies to sales in High or Very High zones. Where a local rule requires it, the seller provides documentation of a defensible space inspection. If the seller does not have it, the buyer and seller can agree in writing that the buyer will obtain it after closing.
Contra Costa County Fire performs these real property transfer inspections. The district's flyer says to request one by email at info@cccfpd.org and allow up to five working days. Order it when you list, not when the buyer asks.
What are the defensible space rules in a Very High zone?
Government Code 51182 requires owners in Very High zones to maintain up to 100 feet of defensible space around structures, within their property line, with more intensive fuel reduction in the area 5 to 30 feet out and an ember-resistant zone within 5 feet of the home. That innermost area is often called Zone 0.
The detailed Zone 0 regulations are still being finalized. As of September 2026 the state Board of Forestry says it is completing final review with the Office of Administrative Law, and the statute requires the rules to give existing homes time to phase in the work. Buyers should expect the standard to apply and plan for it.
What insurance questions should Clayton buyers ask?
Insurance is where a Very High designation is felt most. Before you remove contingencies:
- Get an actual quote on the address, not an estimate, from more than one agent or broker.
- Ask whether the California FAIR Plan is involved. The Department of Insurance describes the FAIR Plan as a last-resort backstop. If it is the only option, you may also need a separate policy to fill coverage gaps.
- Ask about mitigation discounts. The Department of Insurance's Safer from Wildfires framework recognizes actions such as a Class A roof, a 5-foot ember-resistant zone and ember-resistant vents.
- Ask the seller what they pay now and whether their carrier has sent any non-renewal notices.
For more on the city, see Living in Clayton. For the hazard disclosure in general, see my guide to the Natural Hazard Disclosure report.
Frequently asked questions about Clayton fire hazard zones
Is Clayton in a Very High Fire Hazard Severity Zone?
Much of it is, under the local maps adopted by Contra Costa County Fire Protection District effective July 10, 2025. Check the district's map for a specific address.
Do I need a defensible space inspection to sell a home in Clayton?
Civil Code 1102.19 requires sellers in High or Very High zones to provide defensible space documentation where a local rule requires it, or to agree in writing that the buyer will obtain it. Contra Costa County Fire performs these inspections.
How do I request a Con Fire defensible space inspection?
The district's flyer says to email info@cccfpd.org and allow up to five working days for processing.
What is Zone 0?
The ember-resistant area within 5 feet of a home. Government Code 51182 requires it in Very High zones, and the detailed state regulations are in final review as of September 2026.
Can I get homeowners insurance in Clayton?
Availability and price vary by address and carrier. Get quotes early, ask whether the California FAIR Plan is involved, and ask about mitigation discounts under the state's Safer from Wildfires framework.
The Bottom Line on Clayton Fire Zones
Clayton's new map does not change what the town is. It changes the paperwork and the insurance conversation. Sellers should order the defensible space inspection at listing. Buyers should get a real insurance quote on the address before removing contingencies.
Buying or selling in Clayton?
Send me an address and I will tell you its zone and what to line up before you list or write an offer.
Find out what your Clayton home is worth
Or call or text 925-250-9611.
Sources
Office of the State Fire Marshal, Fire Hazard Severity Zones. Contra Costa County Fire, Local Responsibility Area maps, Clayton map and Phase II acreage summary. Con Fire, Real Property Transfer Inspection. Civil Code 1103.2, Civil Code 1102.19 and Government Code 51182. Board of Forestry, Defensible Space Zones 0, 1 and 2. California Department of Insurance on the FAIR Plan and Safer from Wildfires.
Jaz Chand, Broker Associate | Homes With Accent
The Jaz Team at Merrill Signature Properties | DRE #01751823
Phone/Text: 925-250-9611 | Jaz@HomesWithAccent.com
General information only, not legal or insurance advice. Hazard maps, defensible space regulations and insurance availability change. Confirm the zone for a specific address with Contra Costa County Fire and get insurance quotes from a licensed agent.