Wisconsin
Department of Safety and Professional Services
Division of Policy Development
Adopted I-Codes:
2021 International Building Code (IBC)
2021 International Energy Conservation Code (IECC)
Applicability (statewide, local, limited): STATEWIDE
Wisconsin’s state codes are uniform for all jurisdictions in the state. The commercial building code applies to all commercial buildings (public buildings and places of employment) with few limited exceptions. The Uniform Dwelling Code applies to all one- and two-family dwellings constructed on or after June 1, 1980. The State codes are uniform (mini/maxi) codes with strict limitations on municipal authority to have in place differing provisions.
Notes:
Page last updated: March 2026