What Zone 0 Actually Requires: A Homeowner's Compliance Checklist for the First Five Feet
Every few weeks someone asks me the same question: "Is Zone 0 actually law yet, or is it still just a proposal?" The honest answer is "both, sort of" — and that uncertainty is exactly why most homeowners I talk to haven't done anything about it yet. After the 2018 Woolsey Fire burned through the hills near my home in West Hills, I went through CERT training and started building wildfire defense equipment for homeowners. One thing I've learned since: waiting for a regulation to become fully official before you act on the substance of it is a bad bet when the substance is this well-established. Here's where Zone 0 actually stands right now, and exactly what it asks you to clear from that first five feet.
Where the Rule Actually Stands Today
California's Board of Forestry and Fire Protection adopted emergency Zone 0 regulations under AB 3074 on August 19, 2026, and submitted them to the Office of Administrative Law for review on August 28. The public comment period on that emergency filing closed September 2. As of this writing, the regulations still need OAL approval and filing before they're officially in effect — so no, you can't point to a single date on a calendar and say "that's when I'm required to comply." I'm not going to invent one here, and you should be skeptical of anyone who does.
What I can tell you with confidence: the requirements themselves aren't moving much at this point, even while the paperwork finishes. And several things that are already law today — roof and gutter debris, firewood storage, dead branch removal, chimney clearance — apply regardless of when the new Zone 0 language formally takes effect. Some cities and water districts have also adopted their own stricter local ordinances already in force, independent of the state timeline. "The state rule isn't final yet" is not the same as "nothing is required of me right now." Check with your local fire department or building department for what applies in your specific jurisdiction.
What "Zone 0" Actually Covers
Zone 0 is the five feet of ground immediately touching your home — the zone where an ember doesn't need wind-driven flame to ignite something, just a landing spot. It applies to occupied structures in locally designated Very High Fire Hazard Severity Zones, and more broadly to structures throughout State Responsibility Area land regardless of hazard tier. The logic is simple: if nothing combustible is sitting against the house, an ember that lands there has nothing to catch. That's a different job than the rest of your landscape, and it's why the rule treats it as its own zone instead of folding it into general defensible space.
Zone 0 Compliance Checklist: What Has to Go
- Combustible mulch, wood chips, bark, dry leaves, and pine needles — removed from the first five feet, with only limited, temporary exceptions for active erosion control.
- Firewood storage — not allowed anywhere in Zone 0, including under eaves or against a side wall where it's "out of the way."
- New combustible fencing — prohibited within Zone 0 going forward. Existing combustible fencing or gates generally can't attach directly to the structure; it needs roughly a five-foot noncombustible span where it meets the house.
- Combustible material and vegetation under decks, balconies, pergolas, and stairs — cleared out. This is one of the spots I see missed most, because it's not visible from the street.
- Dead or dying branches and ladder fuels — removed, whether they're on a shrub three feet from the wall or a tree limb hanging over the roofline.
What's Still Allowed
- Limited, well-maintained nonwoody plants — if they meet spacing, height, and area standards. Zone 0 isn't "pave everything"; it's "nothing that functions as fuel against your walls."
- Combustible repair materials for existing fencing — you're not required to rebuild a whole fence in noncombustible material just to patch a broken slat.
- Small outbuildings under 120 square feet — allowed in Zone 0 only if built entirely of noncombustible materials.
- Local alternative practices — some local agencies can adopt their own approach by ordinance, as long as they can show it does the same job. Local rules can also simply be stricter than the state baseline.
What You Need to Know
- Zone 0 reduces ignition risk — it doesn't eliminate it, and it isn't fire suppression. A clean first five feet means an ember is far less likely to find fuel. It does nothing for the ember that gets through a gap you didn't check, or a fire that's already reached the structure. That's a job for equipment, not landscaping.
- There is no single statewide compliance deadline today. New-construction requirements phase in after the Board finalizes fuels-management guidance post-adoption; existing-structure requirements follow years later under the statute. Don't plan around a specific date you heard secondhand — confirm with your local jurisdiction.
- Several underlying requirements are already enforceable law independent of the new Zone 0 rulemaking — roof/gutter debris, firewood placement, dead branch removal, chimney clearance. Those don't wait on OAL.
- This is general information, not a substitute for your local fire authority. VHFHSZ mapping, SRA/LRA status, and local ordinances all vary by city and even by block — verify your own property's requirements directly.
Defensible space and equipment aren't competing strategies — they're sequential ones. Zone 0 is what keeps an ember from ever catching in the first place. The hydrant kit is what you reach for on the day defensible space wasn't quite enough, because a gate was open or the wind found the one gap you missed. Clear your five feet. Then make sure the second layer is actually ready too.
Sherwin Ross is the founder of Ace Fire Defense, based in West Hills, CA. After the 2018 Woolsey Fire, he became CERT-trained and started building wildfire defense equipment for homeowners.