International Building Code (IBC) 2024, IRC 2024, IEBC 2024 with Iowa amendments, 661 IAC ch. 300-301; effective Sept 10, 2025. Enforced by State building code commissioner within DIAL adopts the code (Iowa Code ch. 103A); local governmental subdivisions issue permits and inspect. Mandatory only for state-owned buildings and cities over 15,000 lacking an equivalent local code. Verified on the primary source, re-checked weekly.
Consolidated six prior chapters into one. Commercial and residential energy provisions stay at the 2012 IECC editions (not updated to 2024) under an Executive Order 10 deregulation directive. IEBC 2024 covers alterations to existing buildings.
Source: primary document
Statewide layer. County and city amendments sit on top; the building view resolves them from your ZIP.
In force since Sept 10, 2025; no further edition change pending as of this research
International Building Code (IBC) 2024, IRC 2024, IEBC 2024 with Iowa amendments, 661 IAC ch. 300-301; effective Sept 10, 2025. Consolidated six prior chapters into one. Commercial and residential energy provisions stay at the 2012 IECC editions (not updated to 2024) under an Executive Order 10 deregulation directive. IEBC 2024 covers alterations to existing buildings.
State building code commissioner within DIAL adopts the code (Iowa Code ch. 103A); local governmental subdivisions issue permits and inspect. Mandatory only for state-owned buildings and cities over 15,000 lacking an equivalent local code.
Nothing is scheduled. The rule above stays in force until the state adopts a newer edition or amends the program; AHJ Radar re-checks the source weekly.
One address, every authority that can cite it, and a record of who saw what. Cancel anytime. Public pages stay free.