The 30-second version
- Zone 0 (0-5 ft from structure) must be non-combustible on all VHFHSZ properties under California AB 3074.
- What's out: wooden mulch, combustible vegetation, stored firewood, plastic planters, wooden furniture, combustible fencing within 5 ft.
- What's in: decomposed granite, gravel, permeable pavers, small ornamental low-water succulents in fire-safe containers, LED path lighting.
- Zone 0 doesn't have to look sterile — good design achieves defensibility + curb appeal.
What the law actually requires
California AB 3074 (effective 2023, enforcement ramping through 2029) requires Zone 0 hardening on properties inside a Very High Fire Hazard Severity Zone. The specific requirements: no combustible material within 5 feet horizontally of any exterior wall of the structure or of any adjacent deck. Combustible material includes wood mulch, dry grass, most shrubs, wood fences that connect to the structure, stored firewood, plastic outdoor furniture, and doormats made of combustible material.
Materials that work in LA Zone 0
- Decomposed granite (DG): the default LA Zone 0 groundcover. Golden or graphite color, permeable, low-cost ($1.50-$3.50 per sqft installed), works with modern and traditional architecture.
- River rock or 3/4-inch gravel: higher visual weight than DG, better for slopes where DG would migrate.
- Permeable concrete or porcelain pavers: $12-$25 per sqft installed. Best where Zone 0 doubles as a walkway.
- Metal edging: steel or aluminum edging separates Zone 0 from Zone 1 landscape without introducing combustible material.
- Concrete or steel-clad planters: for accent plantings only; the plant itself must be low-water, low-fuel (small succulents work).
Plants that CAN be in Zone 0 (with care)
AB 3074 doesn't ban all vegetation from Zone 0 — it bans combustible vegetation. Some plants have low enough fuel loads and high enough moisture that CalFire's guidance considers them acceptable when spaced appropriately:
- Sedums and low succulents (fire-resistant water content)
- Aeoniums and echeverias (dense, waxy leaves)
- Blue Fescue and California native carex grasses (kept short and irrigated)
- Bermuda grass (kept short and moist)
What's not acceptable in Zone 0: any woody shrub, any ornamental grass over 6 inches, any vine on the structure, and any conifer or juniper regardless of species.
Design principles that work in LA
- Use color and texture in the hardscape — decomposed granite comes in gold, gray, graphite, and rust. Mixing two colors in geometric bands looks intentional.
- Contain accent plantings in non-combustible planters — a matched set of steel-clad planters with sedums reads as design intent, not compliance.
- Use lighting to add nighttime interest — LED path lights, ground-mounted uplights on the exterior wall, and step lights all add visual complexity without combustible material.
- Extend the Zone 0 aesthetic outward — if Zone 0 is DG with steel edging, use the same DG (with occasional plant beds) into Zone 1 for visual cohesion.
- Consider a Zone 0 water feature — a low bubble fountain or reflecting pool in Zone 0 is both non-combustible and design-elevating.
What to remove first
If you're starting from an un-hardened yard, the priority order for removal:
- Combustible mulch touching the exterior wall (do this today)
- Woody shrubs and any conifer within 5 ft (do this this month)
- Stored firewood, plastic planters, wooden doormats within 5 ft
- Wooden fence sections that connect to the structure (replace last 5 ft with metal or masonry)
- Redesign hardscape and planting for permanent Zone 0 compliance
Halo Build Co partners with LA-area landscape designers who specialize in fire-hardened design. If you want a coordinated Zone 0 + Chapter 7A retrofit, we can quote both scopes together. See our wildfire defense overview or request an on-site consultation.
Frequently asked questions
Does Zone 0 mean I have to have a bare gravel yard?
No — AB 3074 requires non-combustible Zone 0 but doesn't dictate any particular aesthetic. Well-designed Zone 0 landscapes use decomposed granite in mixed colors, containerized succulents, metal edging, water features, and LED lighting to achieve visual interest without introducing combustible material. The requirement is fire-safe, not sterile.
Can I have any plants in Zone 0?
Yes — but only specific low-fuel, high-moisture plants and only when spaced appropriately. Sedums, aeoniums, echeverias, and California native carex grasses are typically acceptable if kept irrigated. Woody shrubs, ornamental grasses over 6 inches, vines on the structure, and any conifer or juniper are prohibited regardless of species.
How is Zone 0 enforced in LA County?
Enforcement is currently by warning and voluntary compliance, with insurance carriers driving most actual behavior change. However, AB 3074 enforcement is ramping through 2029, with CalFire or your local AHJ conducting inspections. Non-compliant properties may face fines and, more consequentially, insurance non-renewal. Fire departments in high-risk LA neighborhoods (Malibu, Palisades, Bel Air) already conduct Zone 0 inspections annually.