Iowa Building Codes

Current base code, county-level adoption data, special-zone overlays, and source links for restoration contractors.

Building Code Portal State Statutes

Counties

ZIPs

1073

Special zones

719

Local amendments

Current State Code

Verified state-level adoption record from SkyCanvass jurisdiction data.

Adoption model

municipal_adoption

Base code

irc_2024

Effective date

2024-01-01

Next update

Not scheduled

Iowa has NO mandatory statewide residential building code. Code adoption is local option. State Fire Marshal has limited commercial jurisdiction. Climate Zones 5A (most)/6A (northern). Ice barrier required. 99 counties.

County Guides

County pages include local code editions, amendment flags, and jurisdiction-specific links.

Iowa Building Codes

Current State Code

County Guides

Adair County

Adams County

Allamakee County

Appanoose County

Audubon County

Benton County

Black Hawk County

Boone County

Bremer County

Buchanan County

Buena Vista County

Butler County

Calhoun County

Carroll County

Cass County

Cedar County

Cerro Gordo County

Cherokee County

Chickasaw County

Clarke County

Clay County

Clayton County

Clinton County

Crawford County

Dallas County

Davis County

Decatur County

Delaware County

Des Moines County

Dickinson County

Dubuque County

Emmet County

Fayette County

Floyd County

Franklin County

Fremont County