On February 28, 2026, the City of San Diego began enforcing a wildfire rule that most homeowners still have not heard of. It applies to the first five feet around a structure, and it is now part of local fire code.
San Diego adopted it ahead of the state. The requirement sits in San Diego Municipal Code §512.0604, part of the city’s Wildland-Urban Interface code, and it applies to properties in Very High Fire Hazard Severity Zones.
The thing that surprises people is what it actually regulates. Not roofing. Not vents. Landscape.
Five Feet Is Where Homes Ignite
The reasoning behind Zone 0 is unglamorous and well documented. Most homes lost to wildfire do not burn because a flame front reached them. They burn because a wind-blown ember landed somewhere flammable and had time to work.
Bark mulch is the textbook example. So are firewood stacks against siding, dry leaves collected in corners, and anything stored under a deck.
Once ignition happens inside that five-foot band, siding and eaves are directly exposed. Everything past that point is a much harder fight.
Which is why the rule targets exactly the strip of ground that landscape contractors have historically treated as decorative filler.
The Enforcement Timeline Is the Part Worth Planning Around
San Diego Fire-Rescue’s Community Risk Reduction Division laid out a phased rollout rather than immediate citations.
2026 is education. Outreach, guidance, no penalties.
2027 brings maintenance enforcement — dead vegetation, combustible mulch, items under decks, firewood, bins placed too close.
2028 expands to vegetation itself. Inspectors start evaluating plant type, height, density, and combustibility. Woody shrubs, dense dry hedges, and resinous species come under scrutiny.
2029 is full compliance, including fences and gates attached to the structure. A wood fence running into a house functions as a fuse, and the fix is usually replacing the first section with metal or building in a break.
The 2028 phase is the expensive one, which is presumably why it sits two years out. Replanting a perimeter is not a weekend job.
One caveat that trips people up: this timeline is the City of San Diego’s. The county contains 51 different fire agencies, each setting its own pace. Living in Poway, Santee, or an unincorporated pocket means a different schedule entirely.
What This Does to Planting Plans
The practical outcome is that the five-foot band around a house is becoming a hardscape zone by default. Gravel, stone, pavers, and decomposed granite all satisfy it without argument.
That is a design problem as much as a compliance one. A bare gravel strip circling a house looks like what it is, and nobody wants that.
The better solutions treat the band as a deliberate element — a stone border that reads as intentional edging, a paver walkway that doubles as the required break, a dry creek detail that handles drainage and combustible clearance at once.
A persistent misconception is that Zone 0 requires stripping all vegetation. It does not. The standard is low-flammability material, not scorched earth, and well-spaced succulents or low-fuel groundcover can work depending on the reviewing agency.
What has changed is that the decision is no longer purely aesthetic. Insurance carriers are tightening underwriting in these zones independently of the fire code, which means documented mitigation has value beyond avoiding a citation.
Anyone in a Very High zone planning landscape work over the next two years is effectively choosing between doing it once, now, with the rule in mind, or doing it twice.