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Emergency Preparedness

Preparing Your Home Before Fire Season

Prepare both the outside of the property and the inside-air plan before high-risk weather.

2 min read Updated July 15, 2026

Today’s Takeaway

Prepare the property for embers and the interior for smoke: maintain defensible space, harden vulnerable openings, test alerts, and set up filtration before the first red-flag warning.

2-Minute Summary

Wildfire home preparation has two tracks. Exterior work reduces ignition risk from flames and embers; indoor planning reduces smoke exposure when it is safe to stay home. Follow current CAL FIRE and local defensible-space rules, maintain roofs and gutters, address vents and vegetation, document the property, test alarms, and prepare a clean-air room, go bags, and evacuation routes.

Quick Action Guide

Clear ignition zones

Remove combustible debris from roofs, gutters, decks, and the area immediately around structures.

Follow current state and local defensible-space requirements.

Address openings

Inspect vents, screens, windows, doors, roofs, and gaps where embers may enter.

Use qualified professionals for building modifications.

Prepare indoor air

Test HVAC, obtain compatible filters, size portable cleaners, and identify a clean-air room.

Keep replacement filters ready before demand rises.

Prepare to leave

Register for alerts, photograph property, stage go bags, and practice two evacuation routes.

Home preparation never justifies delaying evacuation.

Prepare for both fire and smoke

A home can be threatened directly by flames and embers or affected by smoke from miles away. Exterior preparation, evacuation planning, and indoor-air preparation should be completed together.

Start with the structure

Inspect the roof, gutters, vents, eaves, siding, windows, doors, decks, fences, and areas where different building materials meet. Remove leaves, needles, and combustible debris. Repair gaps and damaged screens. Consult current building codes and qualified professionals before modifying vents, roofs, or siding.

Manage defensible space

CAL FIRE and local agencies define defensible-space zones and maintenance requirements. Remove dead vegetation, separate fuels, prune appropriately, and keep access routes clear. The area immediately next to the home deserves special attention because small embers can ignite mulch, furniture, stored materials, or debris.

Reduce combustible storage

Move firewood, spare lumber, cardboard, flammable liquids, and other combustibles away from structures and evacuation paths. During high-risk weather, move patio cushions and light furniture indoors or to a safer location if authorities recommend it and time permits.

Prepare alarms and utilities

Test smoke and carbon-monoxide alarms and replace batteries according to instructions. Know how to shut off utilities only if local authorities or utility providers instruct you and you can do it safely. Never run a generator indoors, in a garage, or near doors, windows, or vents.

Prepare indoor air

Service HVAC equipment, verify filter size and MERV compatibility, obtain replacement filters, and learn recirculation settings. Size portable HEPA cleaners for the rooms where they will be used. Select and stock a clean-air room.

Document the property

Photograph or video each room, exterior side, roof, landscaping, vehicles, tools, and high-value items. Save serial numbers, receipts, policy documents, and contact information in secure cloud storage and a waterproof go-bag copy.

Prepare evacuation logistics

Register for alerts, maintain fuel or vehicle charge, identify two routes, and arrange transportation for people who need help. Keep go bags, medicines, pet supplies, keys, and documents accessible.

Seasonal maintenance schedule

  • Before fire season: major vegetation and building maintenance, equipment service, insurance review.
  • Monthly during season: check gutters, debris, filters, alarms, supplies, and alerts.
  • Before red-flag weather: charge devices, fuel vehicles, move combustibles, confirm routes, and monitor official updates.

Local rules

California and local requirements change. Use CAL FIRE, your city or county, and your fire department as the source of truth for defensible space and home-hardening requirements.

Frequently Asked Questions

What is defensible space?

The managed area around a structure intended to slow fire and improve firefighter access. Requirements vary by location.

How close should vegetation be to the house?

Follow current CAL FIRE and local zone rules; the first feet around structures require especially careful maintenance.

Do plants cause all home ignitions?

Embers can ignite roofs, gutters, decks, fences, furniture, mulch, vents, and debris as well as vegetation.

Should I replace vents?

Ember-resistant venting may reduce risk, but use code-compliant products and qualified installation.

What should I photograph?

Each room, exterior side, roof, landscaping, vehicles, valuables, serial numbers, and insurance documents.

How should I prepare HVAC?

Confirm filter size and compatibility, know recirculation settings, service equipment, and keep replacement filters.

Can I use a generator during smoke?

Only outdoors at a safe distance from doors, windows, and vents, following manufacturer and carbon-monoxide safety instructions.

How often should gutters be cleaned?

As often as needed to prevent accumulation, especially before and during fire season.

Should I stay to defend the home?

Follow local fire-agency instructions. Do not remain or return when evacuation orders or unsafe conditions apply.

Does defensible space guarantee the home survives?

No. It reduces risk but cannot eliminate it.

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Preparing Your Home Before Fire Season Quick Guide

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