Fire zones
Fire-Resistant Fencing Near Your Home
A wood fence attached to a house can carry fire right to the wall. The common fix is a metal section or gate where the fence meets the house, with wood beyond. California’s proposed “Zone 0” rules would require that in some areas, but as of October 4, 2026 they are not in force: they were withdrawn from state review in September 2026.
Why the first 5 feet matter
Embers land along the base of walls and fences. A wood fence that touches the house works like a fuse: once it catches, it burns toward the wall. Breaking that connection with a noncombustible section is the point of the proposed rules, and a reasonable choice whether or not they take effect.
Zone 0 (Board of Forestry ember-resistant zone rules)
- Adopted: August 19, 2026, by the Board of Forestry and Fire Protection.
- Fence provisions as adopted: no combustible fences or gates attached to a structure; no new combustible fencing within 5 feet of it; a noncombustible span of about 5 feet where fencing meets the house; repairs to existing combustible fencing allowed (BB&K summary).
- Where it would apply: State Responsibility Areas in all hazard zones, and Local Responsibility Areas in Very High Fire Hazard Severity Zones.
- Timing: 3–5 year phase-in for existing homes once effective.
- Now: withdrawn from Office of Administrative Law review in September 2026 for technical edits; no resubmission date announced (WildfireLA, Sept. 11, 2026).
We’ll update this box when the rules are resubmitted or take effect. Products sold as “Zone 0 compliant” are describing rules that don’t yet apply.
Who it would affect around Walnut Creek
Local reporting on the 2025 state maps lists Very High Fire Hazard Severity Zones in Orinda, Moraga, Lafayette, Danville, Clayton and Concord; Walnut Creek and Pleasant Hill were not listed. Zones are drawn parcel by parcel, so check your own address on the map before deciding anything:
- State Fire Marshal hazard zone map viewer
- ConFire (Walnut Creek, Lafayette, Pleasant Hill, Concord, Clayton)
- Moraga-Orinda Fire District
- San Ramon Valley Fire (Danville, Alamo, Blackhawk, Diablo)
Options where the fence meets the house
| Option | How it works | Cost pointer |
|---|---|---|
| Metal transition panel | A steel or aluminum panel for the last few feet to the wall; wood beyond | Usually the smallest change |
| Metal side-yard gate | Replaces a wood gate at the house corner with steel or aluminum | See gate costs |
| Aluminum or ornamental steel run | Open metal fencing along the side yard | $25–$75+ per foot for aluminum (HomeGuide) |
| Steel posts with metal infill | Solid-looking privacy in metal | Higher; get quotes |
Fire districts in the area run defensible-space inspections and publish their own guidance; their rules, not this page, decide what your property needs. Nothing here is a fire-code compliance determination.
Questions
Is Zone 0 law in California?
What fencing is noncombustible?
Do I have to replace my wood fence now?
Sources
- Best Best & Krieger summary of the Zone 0 regulations
- WildfireLA, “Zone 0 Regulations Withdrawn from OAL Review” (Sept. 11, 2026)
- CAL FIRE / State Fire Marshal fire hazard severity zone maps
- Contra Costa County Fire (ConFire) LRA maps
- Moraga-Orinda Fire District hazard zone maps
- San Ramon Valley Fire hazard zones
- HomeGuide, fence installation cost
Checked October 4, 2026. Rules and prices change; confirm anything that affects your project with the city or a licensed contractor.
Next step
Swap the wood where it meets the house
Describe where the fence attaches to the house, and a local fence contractor can call about metal options.
Call (925) 477-4533- Posts, sections, gates and full replacements
- Shared fences, deer fences and fire-zone fencing
- Walnut Creek, Lafayette, Orinda, Danville and nearby