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Zone Zero deadlines: what's set, what's estimated, and what's already happening

The compliance timeline for the ember-resistant zone runs in phases, and in this county the field work has already started.

Quick answer: Final Zone 0 regulations are expected in late 2026. New construction and the combustible-fence restriction take effect immediately upon adoption. Existing homes follow: Phase 1 is estimated for 2027 to 2028, and Phase 2 is set by your local Authority Having Jurisdiction, up to five years out. Santa Barbara County has no separate earlier legal deadline, but the City of Santa Barbara adopted the revised 2025 hazard maps on June 17, 2025, and county fire inspections have explicitly included Zone 0 since June 1, 2026.

The timeline

Phased compliance under the April 2026 draft

Already here 2025 maps adopted; Zone 0 in county inspections since 6/26 Late 2026 Final regs adopted; fences + new builds immediate 2027 to 2028 (est.) Phase 1: existing homes begin Up to +5 years Phase 2: set by your local authority
Dates beyond adoption are estimates from the April 17, 2026 Board of Forestry draft and are subject to change. Your jurisdiction sets the specifics.
RequirementStatusApplies
Chapter 7A building standards in newly mapped city zonesIn effectSince the City of Santa Barbara adopted the revised maps, June 17, 2025
Zone 0 included in county fire field inspectionsIn effectSince June 1, 2026, education-first
Zone 0 for new construction (statewide)ImmediateUpon adoption of final regulations, expected late 2026
Combustible fence restriction (attached to structures)ImmediateUpon adoption; plan replacements to the ember-resistant standard now
Existing homes, first wavePhase 1Estimated 2027 to 2028
Existing homes, local schedulePhase 2Set by your AHJ, up to 5 years after adoption
Voluntary early complianceBest practiceAny time; Sundowner wind events don't consult the calendar

Your jurisdiction sets the specifics. Santa Barbara, Lompoc, and Santa Maria homeowners follow their own city departments; Goleta and the unincorporated communities follow county fire; Carpinteria and Summerland follow their independent district. To be precise: this county has not adopted a separate, earlier mandatory Zone 0 deadline, and we won't claim one. What it has done is put Zone 0 into real field practice ahead of the state's schedule.

Questions

Quick answers

What is the actual Zone Zero deadline for existing Santa Barbara County homes?

There is no single date yet. Final state regulations are expected in late 2026. Phase 1 for existing homes is currently estimated for 2027 to 2028, and Phase 2 is set by your local fire authority, which can extend up to five years. Santa Barbara County has not adopted its own earlier mandatory deadline, but county fire's field inspections have included Zone 0 since June 2026, so the practical attention is already here.

Which requirements take effect immediately?

Two, upon adoption of the final regulations: the restriction on combustible fences attached to structures, and Zone 0 requirements for new construction. And separately, the City of Santa Barbara's June 2025 adoption of the revised hazard maps already triggers Chapter 7A building-code requirements for construction in the newly mapped zones.

Why are inspectors already looking at Zone 0 before the deadline?

Because the county chose to fold it in early. Santa Barbara County Fire's defensible-space inspections have explicitly included the 0 to 5 foot zone since June 1, 2026, using guidance developed by CAL FIRE and adopted by the county. It's education-first at this stage, and it means local homeowners get feedback on Zone 0 well before mandatory compliance dates arrive.

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