Illinois
State AdoptionsCurrently there is no statewide Illinois building code. Units of local government can adopt codes of their choice. Effective 1/1/2025, a statewide building code will go into effect as required by the Capital Development Board Act (20 ILCS 3105). More information can be found at https://cdb.illinois.gov/business/codes/buildingcodesregulations.html The IL Energy Conservation Code is documented at https://cdb.illinois.gov/business/codes/illinois-energy-codes.html. It requires the State to adopt the current version of the IECC for all commercial and residential occupancies. The Illinois Plumbing Code, as maintained by the Illinois Department of Public Health, regulates plumbers and the plumbing trade, including licensure of plumbers and irrigation contractors. For all information related to the plumbing code, visit the IDPH Plumbing website. Links to State Adoption Agencies |
Key ContactsICC Government Relations Representative Capital Development Board: Illinois State Board of Education: State Fire Marshal: State Insurance Commissioner: Pool/Plumbing Adoption Agency: |