Cut through the red tape. Everything you need to know about getting a building permit in Chicago — fees, timelines, required documents, and how to avoid the most common rejections.
STEP 1 — DO I NEED A PERMIT?
Not every project requires a permit. Here's what you need to know for common project types.
Permit for adding dwelling units as per the ADU Ordinance.
Auto-fill your additional dwelling unit (adu) permit permit →STEP 2 — HOW MUCH WILL IT COST?
Fees in Chicago are based on project valuation, type, and square footage. These are the current standard fees.
| Category | Fee Type | Amount | Unit | Notes |
|---|---|---|---|---|
| Fee schedule data coming soon. | ||||
STEP 3 — HOW LONG WILL IT TAKE?
From application to final inspection — here's what to expect at each stage in Chicago.
Ensure the site is in an appropriately zoned area and complies with the current Chicago Municipal Code.
Submit application online, including uploading plans where required.
STEP 4 — WHAT DO I NEED TO SUBMIT?
Gather these documents before applying to avoid delays. Required items are marked with ✓.
AVOID THESE PITFALLS
Learn from the most common mistakes that cause delays and rejections — so yours doesn't end up on this list.
New owners often assume the previous owner's designation applies without checking current regulations.
CONTRACTOR REQUIREMENTS
What credentials must your contractor have in Chicago?
The Department of Buildings provides trade licensing for builders and contractors, including specific licenses for drainlayers, crane operators, and plumbers.
Verify contractor license →FREQUENTLY ASKED QUESTIONS
Get a personalized breakdown of every permit you'll need for your project — fees, timelines, and approval tips — in under 2 minutes.
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