Home Hardening in Altadena
Zone Zero Altadena / Home Hardening
Chapter 7A builds the shell. Zone 0 clears the approach.
If you are rebuilding after the Eaton Fire, your plans already carry Chapter 7A: ignition-resistant exterior walls, ember-resistant vents, Class A roofing, protected eaves. That is the state's answer to the building itself.
Zone Zero is the answer to everything the building touches. A hardened house can still be lost through an unhardened five feet: the fence that carries flame to the wall, the mulch bed that smolders at the foundation, the woodpile under the window.
Standing homes are not required to retrofit to Chapter 7A. For them, the ember-resistant zone plus a handful of voluntary upgrades delivers most of the protection at a fraction of the cost.
Where to spend first, rebuild or not
1. Ember-resistant vents
The cheapest upgrade with the biggest payoff. Embers entering vents ignite homes from the inside. Standard on rebuilds; a fast retrofit on standing homes.
2. Clear the five feet
Mulch, dead plants, stored combustibles out of the zone. Free to nearly free, and it is the first thing the coming rules require.
3. Break the fence fuse
A noncombustible panel or gate where fence meets house. The single most common ignition path in ember fires, closed for the cost of one panel.
4. Roof & gutter discipline
Needle litter from Altadena's conifers collects in gutters and valleys. A clean roof is a hardened roof; schedule it seasonally.
Hardening questions, answered
My Altadena rebuild already meets Chapter 7A. Is that not enough?
Chapter 7A hardens the building: roof, vents, eaves, exterior walls. Zone Zero hardens the five feet around it. A Chapter 7A house with a wood fence touching the wall and bark mulch at the foundation still has the two ignition paths that took homes in January 2025. You need both layers.
What is the single highest-value hardening upgrade for a standing home?
Ember-resistant vents. Embers entering attic and crawlspace vents ignite homes from the inside, and vent retrofits are among the cheapest hardening work available. No deadline requires them; every fire scientist recommends them.
Does an older Craftsman home have to be rebuilt to Chapter 7A?
No. Chapter 7A applies to new construction and rebuilds in designated fire hazard zones, not retroactively to standing historic homes. Standing homes comply with Zone Zero through the phased schedule: clear the zone, then replace built combustibles on LA County's timeline.
What did survivors' homes in ember fires tend to have in common?
Post-fire damage assessments across California ember-driven fires repeatedly point to the same pattern: surviving homes tend to have noncombustible immediate surroundings, protected vents, and clean roofs and gutters. No single feature guarantees survival, and this site will not pretend otherwise, but the pattern is why the first five feet are now law.
Harden the house you are building, or the one that stood
One free visit produces a prioritized hardening plan: what Chapter 7A already covers, what Zone 0 will require, and what is worth doing regardless.