Department of Safety and Professional Services
Division of Policy Development 

1400 East Washington Avenue
Madison, WI 53703
Phone: 608-266-2112
DSPS Home (wi.gov)

Current Codes and Edition Adopted:
2015 International Building Code (IBC)
2015 International Energy Conservation Code (IECC)
2015 International Existing Building Code (IEBC)
2012 NFPA 1 Fire Code
Uniform Dwelling Code (State Written)
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.

Amendments Disadvantaging Wood Construction:

Code amendments do not involve subjects impacting wood construction. 


Expected date most recent code will be adopted:

Wisconsin is currently reviewing the 2021 I-Codes for a possible update in Mid 2023. 

Next Update Cycle:

The State adopted the 2015 editions of the IBC, IEBC, and IECC on May 1, 2018. Wisconsin adopts and modifies the IBC, IECC, IMC, IFGC, and the IEBC as their Commercial Building Code.


Wisconsin adopted the 2015 editions of the I-Codes in May of 2018. 

Page last updated: December 2022