What is Zone Zero?
Zone Zero (Zone 0) is the first 0–5 feet around a structure, an area where embers may accumulate and ignite nearby combustible materials. Reducing those fuels can help lower the risk of fire spreading to the building. Zone Zero is distinct from wider defensible-space treatment in Zones 1 and 2.
The California Board of Forestry continues rulemaking and Office of Administrative Law review as of November 13, 2026. Do not treat every proposed rule as already enforceable statewide. Local ordinances, fire-authority directions and hazard-zone designation may impose separate requirements.
What is legally required in November 2026?
The Board of Forestry reports that the statewide Zone 0 package remains under final review with the Office of Administrative Law. State law directs creation of a five-foot ember-resistant zone in designated areas, but the final operative requirements and timing should be checked against publication and your local jurisdiction.
Some communities have existing local defensible-space, vegetation, brush-clearance or home-hardening rules. Check the local fire department separately. A hazard map indicates an area classification and does not by itself establish every maintenance duty.
Latest Board of Forestry Zone Zero status · CAL FIRE hazard maps
A practical five-foot perimeter assessment
- Walk every building perimeter, attached deck, stair landing, exterior wall, garage interface and adjacent utility area.
- Record combustible mulch, leaf litter, dead vegetation, woody shrubs, stacked materials and plant growth contacting siding.
- Review fences, gates and attached structures that could carry flame or radiant heat toward buildings.
- Evaluate possible noncombustible surfacing such as gravel, pavers or decomposed granite where appropriate.
- Preserve drainage, accessible paths, utility clearances, soil stability, existing trees and site-specific landscape needs.
- Review design with the local fire authority and relevant code professionals before implementing regulated changes.
Site recommendations depend on jurisdiction and on current adopted rules. Nature Care offers landscape assessment and improvement scopes; approval or certification by a fire authority is not implied.
Zone 0, Zone 1 and Zone 2: differences
- Zone 0 (0–5 feet): focus on limiting ember ignition and combustible materials immediately beside structures.
- Zone 1 (5–30 feet): reduce fuel continuity with vegetation management and spacing.
- Zone 2 (30–100 feet): broader vegetation and fuel reduction where applicable.
These are general defensible-space planning zones. Site-specific requirements can vary by law, terrain, jurisdiction and building conditions.
Zone Zero inspection checklist for HOA managers
Frequently asked questions
Does Zone Zero apply to every building in California today?
No. The statewide package remained under review in November 2026. Applicability depends on adopted rules and local jurisdiction.
Is gravel always required?
No universal design should be assumed. Noncombustible materials can be appropriate, but drainage, access, codes and local fire guidance matter.
Can an HOA implement work in phases?
Often phased project planning is practical, but legally applicable requirements and deadlines must be followed.
Ask Nature Care to review your property
For HOA common areas, apartment communities, office parks and managed commercial sites in Orange County and Greater Los Angeles.
Official programs and authoritative sources
- California Board of Forestry: Zone Zero regulation status
- CAL FIRE defensible space information
- CAL FIRE fire hazard severity zone maps
Reviewed November 13, 2026. Rebate availability, program terms, regulations and local requirements can change; verify current requirements before approval or construction.