IDAHO BUILDING CODE ACT – Amends existing law to revise provisions regarding public school building plan reviews.

H 721 updates Idaho's building code rules for public school construction plans. It allows school districts to choose between local governments or the state division of occupational and professional licenses for plan reviews, but sets strict certification requirements for reviewers (e.g., International Code Council certification for structural reviews). The bill mandates a 30-day initial review timeline and limits fees for school plan reviews to those set by the state division. It directly affects public school districts, contractors, and local governments handling school construction projects.