Illinois Building Code

Illinois Building Code, Permit and Licensing Information

Updated: 6/8/21
What Illinois Building Code and Edition are Adopted?
  • 2009 or newer International Building Code (IBC)
  • 2012 International Energy Conservation Code (IECC)
  • 2008 National Electric Code (NEC) for Statewide * See notes below for City adoption.
  • 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.

Illinois Building Code Agency:

Capital Development Board:
Lisa Mattingly, PE, Administrator
Professional Services
Lisa.Mattingly@Illinois.gov
William G. Stratton Building
401 S. Spring St.
Third Floor, Stratton Bldg
Springfield, IL 62706
http://www.cdb.state.il.us/

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

Notes:

Electrical: The state of Illinois adopted the NEC-2008 statewide for non-building code jurisdictions. Those jurisdictions that have adopted a building code are not affected, but the rest of the state is. Some of the local jurisdictions that have adopted the NEC include:

  • City of Chicago — Chicago Electrical Code incorporates provisions of the NEC-2017, effective March 1, 2018
  • City of Springfield — NEC-2011, effective November 19, 2013
  • City of Decatur — NEC-2014
  • County of Peoria — NEC-2014
  • City of Rockford — NEC-2014
  • City of Joliet — NEC-2014
  • City of Champaign — NEC-2014
  • City of Aurora — NEC-2008 (residential), NEC-1999 (all others)

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.

The below codes are in effect for State owned facilities:

  • 2015 International Building Code
  • 2018 International Energy Conservation Code
  • 2015 International Existing Building Code
  • 2015 International Fire Code (excluding Chapter 4)
  • 2015 International Fuel Gas Code
  • 2015 International Mechanical Code
  • 2015 International Property Maintenance Code
State Website https://www.state.il.us
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.
State Building Code Information The State of Illinois has adopted has not statewide building code (home rule state), only plumbing code is enforced statewide: Illinois Plumbing Code.  There are areas within the state that has no code enforcement department and they are required by the state to use the 2006 editions of the I-Codes and the owner and/or builder is suppose to enforce it.
State Environmental Permit https://www.epa.state.il.us/
Illinois Building Code by County
Illinois Construction Code by County

Type
Code Title
Code Adopted
Technical Bases
Applicability
Building
Building Code
2009
2009 IBC
Building
Residential Code
No Statewide Standard, State or Local Adoption of Editions of Code
Fire
Fire Code
2009
2009 IFC
Electrical
Electric Code
No Statewide Adoption
Mechanical
Mechanical Code
2009
2009 IMC
Plumbing
Plumbing Code
No Statewide Standard, State or Local Adoption of Editions of Code
Plumbing
Private Sewage Disposal Code
No Statewide Standard, State or Local Adoption of Editions of Code
Fire
Fuel and Gas Code
2009
2009 IFGC
Green
Green Construction Code
No Statewide Standard, State or Local Adoption of Editions of Code
Energy
Energy Conservation Code
2015
2015 IECC
Building
Property Maintenance Code
2009
2009 IPMC
Building
Existing Buildings Code
2009
2009 IEBC
Plumbing
International Swimming Pool and Spa Code (ISPSC)
No Statewide Standard, State or Local Adoption of Editions of Code
Accessibility
Accessibility Code
Fire
Wildfire/Wildlife Urban Interface Code
No Statewide Standard, State or Local Adoption of Editions of Code
Zoning
Zoning Code
No Statewide Standard, State or Local Adoption of Editions of Code
Fire
Fire Life Safety Code

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