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Your fence is the first thing the new rules touch

The combustible-fence restriction takes effect immediately when final Zone Zero regulations are adopted. Here's what that means for Orange County fence lines.

Quick answer: Under the April 2026 draft, combustible fences attached to structures in Very High hazard zones are restricted immediately upon adoption of the final Zone 0 regulations, expected late 2026. The fix is a noncombustible section or gate in the first 5 feet of the ember-resistant zone. Fence work in California requires a CSLB Class C-13 licensed contractor.

Why fences first

A wood fence is a fuse connected to your house

Ember research shows the mechanism plainly: embers land in a wood fence line, the fence ignites, and the flame walks the fence straight to the wall. That's why the fence rule is one of only two provisions that take effect immediately, alongside new construction.

The common Orange County retrofit is smaller than people fear. Replace the final 5 feet where the fence meets the structure with a noncombustible panel or metal gate, and the rest of the run can stay. On canyon properties in OCFA territory, where structures sit close and fences connect them, plan the whole line.

Costs vary by material and run length, and any quote should come from a licensed contractor after seeing the property. The free assessment is the honest starting point: it tells you how many linear feet are actually in the zone before anyone talks price.

Beyond the fence

Gates, and what Zone 0 means for them

Gates get the same treatment as fencing where they sit in the ember-resistant zone: noncombustible materials in the first 5 feet. A metal pedestrian gate at the house corner is often the single cheapest compliance win on the property. Statewide fencing guidance lives at zonezerofences.com; this page covers how it lands in Orange County.

Questions

Quick answers

Do I have to replace my whole fence?

Usually no. The requirement targets the portion attached to or within 5 feet of the structure. Many Orange County homeowners replace the last section with a noncombustible panel or gate and keep the rest. An assessment tells you exactly how much of your run is affected.

What fence materials count as ember-resistant?

Noncombustible materials: steel, aluminum, masonry, and certain composites rated for the application. Standard wood fencing attached to the house is exactly what the immediate-effect restriction targets.

Who can legally do fence work in California?

A CSLB-licensed contractor. Fencing is Class C-13. Any referral through this site is licensed, and the free assessment is how to start.

Find out what your fence line needs

A free assessment tells you exactly which Zone Zero requirements apply to your parcel, what your local fire authority will look for, and what to fix first. 100% free, no obligation.

Connect with a Licensed Contractor

Prefer to talk? Call (949) 741-8243