Napa County

Zone 0 status in Napa County

Napa County's own ordinance (No. 1467) requires a noncombustible ember-resistant zone for new construction in the county's unincorporated areas - ahead of the state for new builds, though it doesn't yet set a compliance timeline for existing homes, which instead follow the statewide rule described below.

Napa County (unincorporated) Requires a noncombustible ember-resistant zone within 5 feet of a structure, using noncombustible landscaping materials and/or approved high-moisture annuals/perennials. Applies now to new construction only in unincorporated county areas; no stated timeline yet for existing structures. (Napa County Ordinance No. 1467 (amends Municipal Code Ch. 8.36, Fire Hazard Abatement).) Source

Applies to new construction only as of this writing - if your home already exists, this specific rule doesn't bind your property yet. The statewide Zone 0 rule will, once it takes legal effect.

Elsewhere in this county Outside the specific jurisdiction(s) named above, the statewide Zone 0 rule (adopted August 19, 2026) applies based on your property's Fire Hazard Severity Zone, not a county-wide mandate.

Check an address in Napa County

What this is, and isn't Zone Zero Check is an independent, AI-assisted informational tool. It is not affiliated with CAL FIRE or the State of California, and it does not satisfy the official Defensible Space Inspection required under Civil Code §1102.19 (AB 38) for a home sale. That documentation comes only from CAL FIRE or your local fire department, request it directly at fire.ca.gov/dspace.