Caldwell, ID Fire Regulations: Wildfire Zones (2026)

The City of Caldwell does not designate wildfire hazard severity zones or enforce a Wildland-Urban Interface (WUI) code, and there is no Caldwell defensible-space ordinance. The developed parts of the city lie in the level, heavily irrigated agricultural Treasure Valley, where structural wildfire exposure is lower than in Idaho's forested and rangeland counties. Wildfire planning for the area is handled at the county level: Canyon County participates in a Wildland-Urban Interface wildfire mitigation plan covering Ada, Canyon and Elmore Counties, identifying Caldwell as a community within the planning area and recommending fuel-reduction and mitigation measures rather than imposing building mandates on city lots. State law still reaches wildfire risk through fireworks rules: Idaho Code 39-2609(4) makes it unlawful to use fireworks in any area that constitutes a severe fire threat based on vegetative conditions during the current fire season, as determined by the authority having jurisdiction, when advance notice is given. The Caldwell Fire Department also issues seasonal burn bans during high fire danger. Residents in wildland-adjacent or rangeland-edge areas are encouraged to follow Idaho Firewise defensible-space practices even though the city does not require them.