City vs County: When Zone 0 Applies in San Diego
Two calendars, not one
Do not mix the city phases with the county rule, and do not treat either as a statewide deadline. As of September 19, 2026 there is no statewide Zone 0 regulation in force in California.
City dates below are City of San Diego only (Zone 0 Guidelines for Existing Structures, rev. April 22, 2026). The April 13, 2023 county date is the unincorporated Consolidated Fire Code, Sec. 96.1.4907.9.1. Other incorporated cities keep their own fire authority.
| When | What happens | Who it affects |
|---|---|---|
| Apr 13, 2023 | Required now — unincorporated county. County Consolidated Fire Code, 8th ed., Sec. 96.1.4907.9.1: Zone 0 Immediate Zone 0–5 ft of continuous hardscape or non-combustible materials. Mulch prohibited. No phase-in. | Unincorporated county / participating fire districts |
| Feb 28, 2026 | Required now — City of San Diego new structures. Permit applications from this date. Already passed. | New builds inside city limits |
| Sep 8, 2026 | Proposed — not in force. Statewide emergency filing pulled back for review. OAL file 2026-0828-03E listed as withdrawn. No statewide effective date. | Statewide (nothing in force) |
| Feb 28, 2027 | City of San Diego — Year 1 maintenance. Dead vegetation, debris, firewood. This is not the fence date. | Existing homes inside city limits |
| Feb 28, 2028 | City of San Diego — vegetation removal and replacement. | Existing homes inside city limits |
| Feb 28, 2029 | City of San Diego — full compliance, including fence and gate replacement. Source: Zone 0 Guidelines for Existing Structures, rev. April 22, 2026, §4.6. | Existing homes inside city limits |
Enforcement approach: San Diego Fire-Rescue has described a voluntary-compliance-first process, assessments and compliance plans for residents in higher-risk areas, with citations and fines held as a final notice if no effort is made. Reach the Community Risk Reduction Division directly at (619) 533-4388 Calls are answered by an automated AI assistant and may be recorded and transcribed. for inspection questions.
The county rule is already three years old
The stronger true story is not that San Diego is ahead of a statewide clock. Unincorporated county Zone 0 has been due since April 2023. The city's program is phased and slower. Other incorporated cities do not inherit either calendar. As of September 19, 2026 there is no statewide Zone 0 regulation in force in California.
Non-combustible Zone 0 in force. No grace period. Mulch prohibited. Cite the 2023 code as the instrument in force; the 2026 consolidated edition still has a blank ordinance number.
Phased: new structures 2026, maintenance 2027, vegetation 2028, full compliance including fences 2029. February 2027 is Year 1 maintenance, not the fence date.
Prevention works before any ordinance does
We do not publish a San Diego home count until the city's local map and the state FHSZ layer are reconciled. What we can say: if you are in unincorporated county, the first five feet has been a local requirement for three years. If you are in the city, you have a published phase calendar. If you are in another incorporated city, ask that fire department. In every case, clearing combustibles from the first five feet is effective, practical prevention.
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Deadline questions, answered
Is February 2027 the fence deadline?
No. For the City of San Diego, February 28, 2027 is Year 1 maintenance. Fence and gate replacement is Year 3 — February 28, 2029. Unincorporated county has had a stricter non-combustible Zone 0, with no grace period, since April 13, 2023. There is no statewide fence deadline because there is no statewide Zone 0 regulation in force.
What happens if I miss the deadline?
San Diego Fire-Rescue has described a voluntary-compliance approach: assessments and compliance plans come first, with citations and fines reserved as a final notice if no effort is made. That said, the assessment and plan process itself takes time, so starting early avoids the crunch.
Does this apply to my home if I am outside city limits?
If you are in unincorporated county, the 2023 Zone 0 section is the one that has been due. If you are in another incorporated city (Poway, Escondido, Chula Vista, Carlsbad, San Marcos, El Cajon), that city keeps its own fire authority and does not inherit the county rule. Check the address; city versus unincorporated is the fork.
Have a question about your property?
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