California Wildfire Home Hardening Requirements

Several layers, not one rule

What applies to a given property depends on where it is, when it was built, what work is being done and which local agency has jurisdiction. There is no single statewide checklist that answers the question for every home.

• State building standards that apply to new construction and certain alterations in designated areas
• Fire hazard severity mapping that determines where those standards apply
• Defensible space requirements around structures
• Local ordinances, which can be more specific or more stringent
• HOA and community design rules that affect materials

New construction versus existing homes

Construction standards generally apply to new buildings and to certain types of alteration or replacement work. Existing homes are not automatically required to be retrofitted to current standards, though defensible space obligations and local ordinances still apply.

Why homeowners should verify locally

Requirements are updated periodically, and enforcement differs by jurisdiction. Before planning work, confirm current requirements with your local fire authority or building department. A contractor working regularly in your area will also know what inspectors expect.

Our position

San Diego Home Hardening Pros is not a government agency and does not issue, interpret or enforce regulations. This page is general information only and is not legal or code advice.