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Building Code Reference Library
Illinois Building Codes
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Below you can find links to Building Codes and Authorities Having Jurisdiction for the state of Illinois. To change to another state, click on the map to the right.
This information is obtained directly from the source -- the city, county and state building departments that issue these codes. If you find an error, please send an e-mail with the updated information to RCDWebmaster@ReedBusiness.com.
Notes Concerning Illinois Building Codes
School construction in Illinois is regulated by the Capital Development Board, Illinois State Board of Education. For information call (217) 782-8708.
A comprehensive directory of building codes and officials for many Illinois cities can be purchased from Interstate Publishing. Supplement for commercial structures statewide. IBC, IFC, IMC, IFGC, IPMC, IECC, IEBC for IL Board of Edu 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 Illinois Energy Conservation Code is based on the 2009 IECC.
A comprehensive directory of building codes and officials for many Illinois cities can be purchased from Interstate Publishing. Supplement for commercial structures statewide. IBC, IFC, IMC, IFGC, IPMC, IECC, IEBC for IL Board of Edu 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 Illinois Energy Conservation Code is based on the 2009 IECC.
Illinois Building Codes
| Code Type | Code Model | Amendment Contact |
| Building/Dwelling Code | 2009 International Building Code | N/A |
| Structural Code | 2009 International Building Code | N/A |
| Plumbing Code | Illinois Plumbing Code | Div. of Bldg. Codes & Regulations, (217) 524-0791 |
 | Applies as a mandatory minimum to all buildings | |
| Mechanical Code | 2009 International Mechanical Code | N/A |
| Electrical Code | None | N/A |
| Fire/Life Safety Code | 2009 International Fire Code | Office of the State Fire Marshal, Division of Fire Prevention, (217) 785-4714 |
| Applies as a mandatory minimum to all buildings except 1 and 2 family dwellings and public schools | |
| Accessibility Code | ADAAG (Illinois Accessibility Code) | Online |
| Applies as a mandatory minimum to all buildings except residential | |
| Energy Code | 2009 IECC The Law requires all new commercial and residential construction for which a building permit application is received by a municipality or county to follow a comprehensive statewide energy conservation code. | |
| Elevator Code | None | N/A |
| Gas Code | 2009 International Fuel Gas Code | N/A |
| Boiler Code | ASME Boiler & Pressure Vessel Code 2006 edition | Div. Of Boiler & Pressure Vessel Safety, State Fire Marshal, (217 ) 782-2696 and online |
Illinois Authorities Having Jurisdiction (AHJ)
Authorities Having Jurisdiction are those government officials who are the final authority on questions in a particular area (or jurisdiction).
| Jurisdictional Area | Contact |
| Accessibility | Doug Gamble Accessibility Specialist, Capital Development Boar Phone: (217) 782-8530 Fax: (217) 524-4208 |
| Energy | Lisa Mattingly, PE Administrator, Professional Services Phone: (217) 524-6408 Fax: (217) 524-4208 |
| Fire Marshal | Office of the State Fire Marshal Phone: (217) 785-0969 Fax: (217) 782-1062 |
| Boiler Inspector | David Douin Superintendent Boiler & Pressure Vessel Safety Div Phone: (217) 782-2696 |
Illinois Building Code Website