Hardening Your Home Against Fire - What Works, What’s Required, and What’s New

What is Home Hardening?

Home hardening means upgrading your house, so it resists the two things that actually burn homes down: wind-blown embers and radiant heat. Most homes lost in wildfires are not engulfed by a wall of flame. Homes have embers land on or blow them into a vulnerable spot, such as a roof, a vent, a gutter full of leaves, or a wood pile against the wall, and the house ignites from there. Home hardening closes those weak points.

Where do I start? The highest-impact upgrades

Think of your home as a system with a few key vulnerabilities. Here is where we would start, roughly in order of priority:

• Roof: It's the largest target for embers. Class A fire-rated roofing is the standard; keeping the roof and gutters clear of debris matters just as much as the material.
• Vents: Embers get sucked into attics and crawl spaces through standard vents. Ember-resistant vents (and metal rather than plastic screens) are among the most cost-effective retrofits available.
• Gutters and Eaves: Debris collects in gutters and ignites. Noncombustible gutters and guards, plus enclosed eaves, remove a common entry point.
• Windows and Doors: Radiant heat breaks single-pane glass. Dual-pane tempered windows hold up far better.
• Siding, Decks, and Fences: Ignition-resistant or noncombustible materials, and noncombustible fence attached directly to the house, keep a fire from creeping to your walls.
• The First Five (5) Feet: Which brings us to the newest, and most talked-about, piece, Zone 0.

What's the Deal with "Zone 0"?

Zone 0 is the ember-resistant zone within five (5) feet of your home: no combustible mulch, no stacked firewood, nothing flammable under decks, clear roofs, and gutters. It stems from a 2020 law, AB 3074, and was years late. The Board of Forestry finally adopted emergency regulations on August 19, 2026, but the filing was pulled back from state legal review on September 8 to fix technical issues.

As of this writing, there is no statewide Zone 0 rule in force. It is expected to return, and some cities and counties already enforce their own versions, so check your local rules.

Where to Begin? Start Now:

What should we do; don't wait to get started on hardening your property. These are the least expensive changes on this list, and your insurer may already reward you with discounts for them.

• Start with the inexpensive, high-impact items: vents, gutters, the first five feet.
• Roof replacement is the biggest single decision. If yours is due, do it to Class A standard.
• Confirm your zone and local ordinance first, then plan upgrades.
• Document everything. Photos, permits, and product specs help with insurance discounts and with selling.
• Hardening works best alongside defensible space. One without the other leaves gaps.

How does this connect to the new laws?

• New construction and major remodels in areas that are now designated as High or a Very High zone, must meet the new California WUI Code (Title 24, Part 7), which took effect January 1, 2026. If you are thinking of re-roofing, re-siding, and similar projects, be aware, you can trigger current requirements, so check before you pull a permit.
• Existing homes generally aren't forced to retrofit overnight, but defensible space rules apply now, and an inspection may come up when you sell.
• Insurance is where hardening pays off. Under California's Safer from Wildfires regulation, insurers must offer discounts for qualifying mitigation. The FAIR Plan now offers up to 12 separate hardening discounts on the wildfire portion of premiums for policies effective November 15, 2025, or later. Discounts vary widely by insurer, and the largest typically come from meeting the IBHS Wildfire Prepared Home Plus standard.

What new options are available?

• IBHS Wildfire Prepared Home: A science-based designation recognized in California's insurance framework. According to the Department of Insurance, some of the state's largest insurers now commit to writing policies for homes that meet it.
• Insurance discounts: Ask your insurer which measures earn credits before you spend money, and get your upgrades documented. You can reference 12 separate hardening discounts from the FAIR plan.
• Financial assistance: The California Wildfire Mitigation Program offers help with hardening and defensible space for qualifying homeowners. Availability is limited to select areas and prioritizes high-risk and socially vulnerable communities, so check whether your area is open.

How can G&M help?

Knowing what to upgrade is half the battle. Knowing what's required, what's optional, and what will actually matter to your insurer is the other half.

We can help you confirm your zone and local requirements, sort mandatory from voluntary upgrades, help with permit dilemmas, prioritize a plan that fits your budget, and coordinate with your contractor or design professional so the work is documented and permitted correctly.

Reach out. We're an easy conversation away.

Since 1994, G&M’s goal is to “Make our Clients' Vision a Reality."