🔥 Part 2: CA Fire Zone - New Zone 0 Rule Explained
- CK Realtor
- Jul 1
- 3 min read
Welcome back to our multi-part series on navigating California's shifting wildfire regulations. In Part 1, we tackled how to read those confusing fire maps. Link to Part 1
Today, in Part 2, we're diving into CA Fire Zone new Zone 0 requirements and why this concept may already be familiar to many San Diego homeowners.
📜CA Fire Zone - The Law: What is AB 1455?
The legislation driving these changes is Assembly Bill 1455 (AB 1455), which was signed into law as an urgency statute.
Following the 2025 Southern California wildfire events, AB 1455 authorized the State Board of Forestry and Fire Protection to adopt emergency regulations related to defensible space requirements. As an urgency statute, the law allows those regulations to move through the rulemaking process on an accelerated timeline.
🌿The Three-Zone Breakdown:
Conforming to Your Home
Presently, California homeowners are familiar with managing defensible space using two traditional zones: Zone 1 (approximately 5–30 feet from the structure) and Zone 2 (approximately 30–100 feet from the structure). AB 1455 adds a third defensible space area known as Zone 0 immediately surrounding the structure.
Importantly, Zone 0 follows the contours of the structure itself, including attached decks and similar attached features, rather than being measured as a simple square around the property.
Zone 0: Ember-Resistant Area
(0 to approximately 5 feet from the structure)
🚫 Generally intended to be free of combustible vegetation and materials
✅ Dirt, gravel, stone pavers, or concrete only.
🏡 Attached Deck - Zone 0 wraps here too!
Zone 1: Lean, Clean & Green
(approximately 5–30 feet from the structure)
🌿 Well-pruned, strategically spaced fire-resistant plants.
Zone 2: Reduction Zone
(approximately 30–100 feet from the structure)
🌳 Thinned-out trees, wildland fuel breaks, clear spaces.
📅 Understanding the Implementation Timeline
A common point of confusion is exactly when this law takes effect. The state's implementation timeline is tied to an "Effective Date"—the date the final regulations become effective.
Once the Effective Date arrives, different property types follow different timelines:
🏗️ New Construction
Newly built homes would generally be expected to follow the new requirements beginning on the Effective Date.
🏘️ Rental Properties
Existing residential rental properties are expected to transition to the new requirements when the Effective Date arrives.
🏡 Existing Homeowners (Not Selling)
Owner-occupied homes are generally expected to have up to three years from the Effective Date to make any necessary changes.
🔑 Property Transfers (Home Sales)
AB 1455 includes provisions related to the transfer of residential property. Additional guidance is expected as the state finalizes regulations and implementation details.
🗺️ How Local Rules Change the Game
While the state establishes baseline requirements for State Responsibility Areas (SRAs) and local Very High Fire Hazard Severity Zones, local jurisdictions may adopt and enforce requirements that are more restrictive than state standards.
In some cases, local requirements may impose compliance timelines that differ from the state's implementation schedule. A property's Natural Hazard Disclosure (NHD) report can help identify applicable fire hazard designations and the local agency with jurisdiction over the property.
Wildfire regulations and fire hazard maps can vary significantly by city and county. Local fire agencies and municipal codes can provide additional information regarding area-specific requirements.
🔮 Coming Up Next...
Now that you know how the physical zones are changing, how does this impact your paperwork when it's time to buy or sell a home?
Stay tuned for Part 3, where we will unpack the current Fire Hardening and Defensible Space (FHDS) disclosure form.
Resources:
Call or email me today to discuss your specific goals.
Disclaimer: This information is for educational purposes only and does not constitute legal, financial, or professional advice. Real estate regulations, market conditions, and local ordinances change frequently. Always consult with a qualified professional or local authorities regarding your specific situation and compliance needs.
Christine Kueneke
Broker Associate & Realtor®, DRE #01809365
Certified Probate & Trust Specialist
Century 21 Affiliated | Fine Homes & Estates
Call or Text: 760-613-1626
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