Building permit rules in Illinois

Short answer: In Illinois, building permits are issued locally, so the rules depend on your city; we cover 1 city here, each checked against official sources.

Cities in Illinois
City	Permitting authority	Verified rules
Chicago	City of Chicago Department of Buildings	6 of 6

All cities · All projects

Not legal advice. Always confirm with your local building department. Rules change, and your parcel's zoning, HOA, historic district, floodplain or utility work can change the answer. We show the official source and the date we last checked it so you can verify for yourself.