BUILDING CODE ACT – Amends existing law to provide a definition for agricultural buildings and that counties shall not alter the provisions of the section.

This bill defines "agricultural buildings" in Idaho to include farm structures like barns, livestock shelters, equipment storage, and horticultural greenhouses. It requires counties to exempt these buildings from most building code requirements - including fire sprinkler systems and accessibility standards - while allowing minimal permit fees for road setbacks and utility compliance. Counties are explicitly prohibited from adding extra rules, such as size limits, exit distance requirements, or sprinkler mandates, for these agricultural structures. The law applies to all agricultural operations and takes effect July 1, 2025.