The Iowa Code with amendments is based on the 2015 editions of the International Codes, except for the IMC which is the 2021 edition and the IECC which is the 2012 edition. The state IFC and IECC are required for all construction. Iowa is a home-rule state and there is no law forcing them to update their codes. When they do update their codes, local jurisdictions with populations in excess of 15,000 have the option of adopting the prevailing state adopted codes or a stricter code as determined by the jurisdiction.
Links to State Adoption Agencies
ICC Government Relations Representative
State Building Official:
State Fire Marshal:
Pool adoption agency:
Plumbing code adoption agency: