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The ember-resistant zone and home hardening are one system. Here's the structure side, prioritized by what actually saved and lost homes in this county's own fires.
Priority order
The difference between houses lost and houses standing in ember events consistently comes down to fuel at the wall and openings in the shell. This county proved it in 2007. The follow-up covers both sides of the system.
Questions
They're partners. Zone 0 removes fuel in the first 5 feet; home hardening upgrades the structure itself: vents, eaves, roofing, decks, and windows. IBHS research treats them as one system, because embers exploit whichever weakness exists.
Ember-resistant vents are consistently the best cost-to-protection ratio. Embers entering attic and crawlspace vents ignite homes from the inside, and vent retrofits are far cheaper than roofing or window replacement.
Because of what the Grass Valley Fire proved: most homes lost near Lake Arrowhead in 2007 ignited from embers or from neighboring structures, not the flame front. A hardened shell plus a clean five-foot ring is the combination that breaks that chain.
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 (213) 279-1797 Calls are answered by an automated AI assistant and may be recorded and transcribed.