Complete guide to building permit requirements in Illinois. Find permit rules for sheds, decks, fences, roofs, HVAC, electrical, plumbing, pools, solar, and more.
Illinois building codes are adopted and enforced at the local level. Chicago has its own comprehensive building code while suburban municipalities adopt various IBC versions.
For statewide contractor licensing: Illinois DFPR
Select your project type to get Illinois-specific requirements, costs, and how to apply:
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Illinois building codes are adopted and enforced at the local level. Chicago has its own comprehensive building code while suburban municipalities adopt various IBC versions.
Permit fees, processing times, and specific requirements vary significantly by city and county in Illinois. Always contact your local building department to confirm current requirements before starting any project.
Licensed local contractors know your area's permit requirements and handle the paperwork for you. Get free quotes in minutes.
Get 3 Free Contractor Quotes →