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Statewide Zone 0 is Proposed — not in force; a wood fence attached to the house is still the highest-leverage retrofit. Here's what that means for San Bernardino County fence lines, from cabin lots to foothill tracts.
Why fences first
This county wrote the textbook on the mechanism. When post-fire teams studied the Grass Valley Fire's losses near Lake Arrowhead, the finding was blunt: most of the 174 destroyed homes ignited from embers or from one another, structure to structure, fuel to fuel. A wood fence attached to a wall is a fuse in that chain, whether it's a cedar privacy run in Highland or a split-rail line at a Crestline cabin. That is why the first five feet of fence line is Recommended now even while statewide Zone 0 remains proposed.
The common 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. Costs vary by material and run length, and a quote depends on seeing the property. Count how many linear feet are actually in the zone before anyone talks price.
Beyond the fence
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 San Bernardino County.
Questions
Usually no. The requirement targets the portion attached to or within 5 feet of the structure. Many 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.
Noncombustible materials: steel, aluminum, masonry, and certain composites rated for the application. Standard wood fencing attached to the house is the highest-leverage retrofit, and split-rail cedar tying into a mountain cabin counts too. Statewide Zone 0 is Proposed — not in force; the first five feet is Recommended now.
Hired fence work at $1,000 or more in labor and materials, work that needs a permit, or work that uses hired workers generally requires a CSLB license (Class C-13 for fencing). Owner-builder and minor-work exemptions can apply.
Submit your address and we will follow up about which local rules apply to your parcel, what your fire authority will look for, and what an inspection would document.
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