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Illinois Building Codes


Adoption Info


The State of Illinois has not adopted statewide building codes. The authority to issue Illinois Accessibility Code interpretations is project specific based on the information provided and is granted to the Capital Development Board by the Illinois Environmental Barriers Act. It does not relieve the project from conformance with the 2010 Americans with Disabilities Act or other applicable codes. Please check with your local government office to understand which codes apply to your project.

According to PA 096-0704 (effective January 1, 2010), all new commercial construction after July 1, 2011 must comply with the 2006 or later editions of the International Building Code, International Existing Building Code, International Property Maintenance Code, and the 2008 or later edition of the National Electrical Code (NFPA 70) and must pass an inspection by a qualified inspector. This Act does not apply to areas that registered its own adopted building codes to the Capital Development Board (CDB) in accordance with the Capital Development Board Act.

PA 096-0704 was replaced by PA 101-0369 which states that new commercial constructions in a non-building code jurisdiction must comply with the current edition or the most current preceding of the International Building Code, International Existing Building Code, and National Electrical Code (NFPA 70). The change will take effect on December 15, 2019.

2021 Building Codes

Public Act 101-0369
effective December 15, 2019
Original document

2018 Building Codes

2018 Illinois Specific Amendments Energy Conservation
effective July 1, 2019
Original document
Capital Development Board
2018 Illinois Accessibility Code
effective October 23, 2018
Original document
Title 77: Public Health
Chapter I: Department of Public Health
Subchapter R: Water and Sewage
Part 890 Illinois Plumbing Code
effective April 24, 2014
Original document
Public Act 096-0704
effective January 1, 2010
Original document


Illinois Building Codes

The building codes of Illinois adopt the the International Building Code 2021 (IBC 2021), International Existing Building Code 2021 (IEBC 2021), International Energy Conservation Code 2018 (IECC 2018), Accessible and Usable Buildings and Facilities, 2017, Standard for the Installation of Sprinkler Systems, 2019, National Electrical Code, 2020, National Fire Alarm and Signaling Code, 2019, Energy Standard for Buildings Except Low-Rise Residential Buildings, 2016, Safety Code for Elevators and Escalators, 2019, Building Code Requirements for Structural Concrete 2019, Illinois Accessibility Code, Illinois Plumbing Code, and the Life Safety Code, 2015.

Illinois building codes, including the fire and residential codes

Illinois Agencies

Illinois Capital Development Board
Website: https://www2.illinois.gov/cdb/Pages/default.aspx
Email: CDB.FOIA@Illinois.gov

Office Locations
Address: 555 West Monroe Street, 8th floor Chicago, IL 60661
Phone: 312-814-6000
Fax: 312-814-2041

William G. Stratton Building
Address: 3rd Floor Stratton, 401 South Spring Street, Springfield IL 62706
Phone: 217-782-2864
Fax: 217-524-0565

Dunn-Richmond Center
Address: 1740 Innovation Drive, Suite 258 Carbondale, IL 62903
Phone: 618-453-8232
Fax: 618-453-8233

Ottawa Satellite Office
Address: 700 E. Norris Drive, 2nd Floor IDOT Dist # 3 Hdqtrs, Ottawa, IL 61350
Phone: 815-433-7120
Fax: 815-433-7123

Office of the Illinois

State Fire Marshal

Website: https://www2.illinois.gov/sites/sfm/Pages/default.aspx

Springfield Office
Address: 1035 Adlai Stevenson Drive, Springfield, IL 62703
Phone: (217) 785-0969
Fax: (217) 785-1002

Chicago Office
Address: 555 W. Monroe St., Suite 1300-N, Chicago, IL 60661
Phone: (312) 814-2693
Fax: (312) 814-3459

Marion Office
Address: 2309 W. Main Street Marion, IL 62959
Phone: 217-524-2174
Fax: (217) 785-1002