Home › Trabuco Canyon
What the ember-resistant zone rules mean for this unincorporated canyon community, under its actual designation and its actual fire authority.
The local snapshot
Trabuco Canyon has been touched by three major fires since 2007, more than any other Orange County community on this site. Spread along Trabuco Creek at the base of the Santa Ana Mountains in OCFA's Local Responsibility Area, it's mapped Very High, and the Zone Zero ember-resistant zone standard applies to every structure.
Fire record
The 2007 Santiago Fire burned through Trabuco's canyon corridor. The 2018 Holy Fire, ignited in adjacent Holy Jim Canyon, burned 23,136 acres and destroyed 18 structures on this front of the mountains. And in 2024 the Airport Fire burned 23,526 acres and 160 structures, reaching Trabuco Canyon directly. No other community here makes the case for the first five feet more plainly: fires keep arriving, and ember ignition at the structure is the repeatable, preventable failure.
Who enforces it
OCFA is the Authority Having Jurisdiction here. Statewide Zone 0 is Proposed — not in force. Existing defensible-space law still applies. OCFA Guideline C-05 is a new-construction fuel-modification plan-review rule, not a countywide existing-home Zone 0 ordinance. Deadlines pages carry local status labels, not a 2027 to 2028 statewide clock; your jurisdiction sets the specifics, and this page names yours. For the requirements themselves, start with the regulations guide, fences and gates, and landscaping.
Questions
Three since 2007: the Santiago Fire (2007), the Holy Fire (2018, ignited in adjacent Holy Jim Canyon), and the Airport Fire (2024, which destroyed 160 structures across its footprint).
Yes. Trabuco Canyon is unincorporated Very High territory under OCFA, so the ember-resistant zone requirement applies in the first 0 to 5 feet around structures.
Combustible fences and gates attached to structures: that attachment is Recommended now while statewide Zone 0 remains proposed, and fence-line ignition is a documented pattern in canyon fires.
Submit your address and we will follow up about which local rules apply to your parcel, what your fire authority will look for, and what an inspection would document.
Request an inspectionPrefer to talk? Call (949) 741-8243 Calls are answered by an automated AI assistant and may be recorded and transcribed.