Phase 1 of California's Zone Zero regulations requires removing combustible vegetation and ground cover within 5 feet of any structure. This is the first and most immediate compliance action for California homeowners.
Bark mulch, wood chips, pine needles, dead leaves, and all combustible ground cover must be removed from within 5 feet of any structure. Inorganic mulch such as decomposed granite or gravel is permitted.
A completely vegetation-free zone is required within 1 foot of the foundation (or to the drip line of the eave, whichever is greater). No plants, mulch, or organic material of any kind in this zone.
Landscaping compliance is required within 3 years of final rule adoption. With adoption expected late 2026, the Phase 1 deadline is estimated 2027–2028. Start now to avoid contractor bottlenecks.
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Under the April 2026 Board of Forestry draft, combustible vegetation and ground cover within 5 feet of any structure must be removed. The zone is divided into two areas with different requirements.
Bark mulch, wood chips, pine straw, dead or dying vegetation, stored firewood, combustible planters and window boxes, petroleum-based containers, and any loose combustible materials must all be removed from within 5 feet of any structure.
Individual potted plants and in-ground plants may be permitted in the 1–5 foot zone under strict conditions, separated from walls, eaves, windows, and other plants. No plants are permitted in the 0–1 foot foundation zone.
Trees within Zone Zero must be trimmed to maintain 1 foot clearance from structure walls and 5 feet clearance between the lowest branches and the roof surface. Dead branches and ladder fuels must be removed.
Common questions about Zone Zero landscaping compliance, answered clearly.
Limited plants may be permitted in the 1–5 foot zone under strict conditions. They must be separated from walls, eaves, windows, vents, and other plants, and must be low-growing and low-combustibility. No plants of any kind are allowed within 1 foot of the foundation. Check with your local AHJ for approved plant lists.
Yes. Bark mulch, wood chips, and all organic mulch must be removed from within 5 feet of any structure. Inorganic alternatives like decomposed granite, gravel, river rock, or concrete pavers are permitted and recommended as ground cover replacements.
Individual potted plants may be permitted within Zone Zero under the draft regulations, provided they are separated from walls, eaves, windows, and other combustible materials. Potted plants must not be clustered and should be in non-combustible containers (ceramic, metal, or concrete, not plastic or wood).
Lawn grass is generally lower combustibility than mulch or shrubs and may be permitted under the draft regulations, particularly if kept green and mowed. Dead or dry grass must be removed. The foundation safety zone (0–1 foot) must be completely clear of all vegetation including grass.
Phase 1 compliance is required within 3 years of final regulation adoption. With adoption expected late 2026, the Phase 1 deadline is estimated 2027–2028 for most properties. New construction must comply immediately upon adoption. Starting early is strongly recommended, as qualified landscapers in high-risk areas will be in high demand.
Basic removal like clearing mulch, pulling dead vegetation, and trimming trees can be done by homeowners. For tree trimming near structures, a licensed arborist is recommended. A licensed contractor can conduct a full Zone Zero assessment and document your compliance for your local AHJ.
Ready to get your landscaping assessed for Zone Zero compliance?