Page updated as of May 2020

State Code Agency:

Capital Development Board:
Lisa Mattingly, PE, Administrator
Professional Services
William G. Stratton Building
401 S. Spring St.
Third Floor, Stratton Bldg
Springfield, IL 62706

Current Codes and Edition Adopted:

  • 2009 or newer International Building Code (IBC)
  • 2012 International Energy Conservation Code (IECC)
  • National Fire Protection Association (NFPA) 101 also enforced by fire marshal

The 2015 IECC applies to residential and commercial construction for which permits are issued statewide. The Illinois State Board of Education has adopted the 2015 IBC, IFC, IMC, IFGC, IPMC, IECC, IEBC for Pre-K thru 12 public Education Facilities (other than vehicular), but do not apply to Chicago. IBC adopted by Dept. of Health for hospitals where local codes do not apply.

Applicability (statewide, local, limited): LIMITED

There is no State level plan review, enforcement, or inspection. Local municipalities and counties are free to adopt or not adopt codes. In jurisdictions that are not covered by codes, Illinois Public Act 96-0704 mandates the use of the 2006 or newer version of the IBC for commercial construction. In those municipalities that have adopted building codes, those adopted range from the 1990 BOCA Building Code to the 2015 IBC and IRC. The Illinois State Board of Education has adopted the 2015 IBC, IFC, IMC, IFGC, IECC, IPMC and IEBC for public education Pre-K thru 12 Occupancies.

Amendments Disadvantaging Wood Construction:


Next Update Cycle (amendment opportunities):

The Illinois Capitol Development Board's Division of Building Codes and Regulations only acts as an advisory body assigned the responsibility to assist in streamlining building requirements in Illinois. As Public Act 96-0704 calls for the use of I-Codes that are newer than the 2006 editions, there is no update cycle at the State level.

Expected date most recent code will be adopted.

Unknown. Individual communities usually adopt on a three year cycle but that is not always the followed procedure.

Additional Notes: