Illinois Building Code

Illinois Building Code, Permit and Licensing Information

Updated: Jan. 10, 2023

What Illinois Building Code and Edition are Adopted?

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.

Illinois Building Code Agency:

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

Office of the Illinois State Fire Marshal
1035 Stevenson Dr
Springfield, IL  62703
Phone: (217) 785-0969

State Owned Facilities:

According to the ICC, the 2018 IECC applies to residential and commercial construction for which permits are issued statewide. The Illinois State Board of Education has adopted the 2018 IECC, 2015 IBC, IFC, IMC, IFGC, IPMC, 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.

State Website https://www.illinois.gov/
State Licensing Specialty contractor licensing may be required but general contractor licensing is not required by the State of Illinois. Local jurisdictions may also require licensing.
Fire Marshal https://sfm.illinois.gov/
State Environmental Permit https://www2.illinois.gov/epa/Pages/default.aspx
Illinois Building Code by County
Illinois Construction Code by County

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