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Ada County, ID Fire Regulations: Wildfire Zones (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Zone
Boise foothills WUI
Firewise sites
17 in Ada County
Fireworks in fire zones
Prohibited when noticed
Inspections
Free wildfire home checks
Model community
Avimor, Harris North

Summary

The Boise foothills and rural fringes of Ada County lie in the wildland-urban interface (WUI), an area of high wildfire risk. Ada County and the City of Boise have WUI planning and code provisions, and fireworks are barred in areas of severe fire threat based on current vegetative conditions.

City-specific rules exist: Boise has its own wildfire zones rules that differ from Ada County's county-level regulations. If you live in Boise, check the city-specific page instead.

It shall be unlawful for any person, except in compliance with this chapter, to: ... Use fireworks in any area that constitutes a severe fire threat based on the vegetative conditions during the current fire season as determined by the county commission or authority having jurisdiction, provided that notice of such areas is given in advance.

View official code

Full Breakdown

Much of Ada County's foothill development is 'interface WUI,' where homes abut wildland vegetation. Ada County, Boise County, and the City of Boise have adopted WUI definitions and code provisions, and communities like Harris North (one of 17 Firewise USA sites in Ada County) and Avimor are recognized wildfire-adapted models. Idaho Code 39-2609(4) makes it unlawful to use fireworks in any area that constitutes a severe fire threat based on the vegetative conditions during the current fire season, as determined by the county commission or authority having jurisdiction, when notice is given. Free wildfire home-safety inspections are offered by local fire departments.

Violations & Fines

Using fireworks in a designated severe-fire-threat area is an infraction ($100) under Idaho Code 39-2609; escaped fires carry suppression-cost and civil liability.

Frequently Asked Questions

Are fireworks banned in the Boise foothills?
They can be. Idaho Code 39-2609 makes it unlawful to use fireworks in any area of severe fire threat based on current vegetation, as determined by the county or fire authority, once notice is given.
Does building in the WUI have special rules?
Yes. Ada County and Boise have adopted wildland-urban interface code provisions for construction in designated WUI areas, which can require ignition-resistant materials and defensible space.

Sources & Official References

Other rules in Ada County

Fire Pits & Backyard FiresSome RestrictionsSmoke DetectorsSome RestrictionsOutdoor BurningSignificant RestrictionsFireworksSome RestrictionsPropane StorageSome RestrictionsNoise Ordinances: Aircraft NoiseSome RestrictionsNoise Ordinances: Vehicle NoiseSome RestrictionsNoise Ordinances: Barking DogsSome RestrictionsNoise Ordinances: Decibel LimitsSome RestrictionsNoise Ordinances: Amplified Music & Outdoor SoundSome RestrictionsParking Rules: Driveway RulesSome Restrictions

All Ada County rules

Compare Ada County to another location·View the Idaho fire regulations overview

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Wildfire Zones in Cities Across Ada County

Boise, ID