Chicago, IL Sign Regulations: Window Signs (2026)
Key Facts
- Coverage limit
- 25% of window glazing area
- Temp material duration
- 60 days max, no permit
- Painted/cling signs
- Any duration, permit-free
- Fast-track bonus sign
- 16 sq ft, separate allowance
- Painted lettering exclusion
- Under 2 inches not counted
Summary
Chicago caps temporary paper, vinyl, or cling window signs at 25% of a window's glazing area, with no permit needed below that line.
an on-premise sign that is: (1) constructed wholly from paper, fabric, vinyl, or similar materials and attached to a window for no more than 60 days; or (2) painted directly onto the window or made of plastic film or similar material and fully adhered to the window by means of adhesive or static cling for any duration provided that the total area of all such signs in a single window does not exceed 25% of the glazing area of that window.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-74: Current through Council Journal of June 17, 2026).
Full Breakdown
Under Municipal Code § 13-20-550(d), a sign permit is not required for a window sign that is either paper, fabric, or vinyl attached for no more than 60 days, or painted, plastic film, or static cling adhered for any duration, but the combined area of all such signs in a single window can't exceed 25% of that window's glazing area. A glazed door panel counts as a window. Painted lettering under 2 inches tall is excluded from the 25% math. Separately, ground-floor businesses get one permit-free 'fast-track' interior window sign up to 16 square feet under § 4-4-100, on top of the § 13-20-550(d) allowance, and neither counts toward the total sign area cap in § 17-12-1003.
Violations & Fines
Exceeding the 25% glazing threshold, or running a paper/vinyl sign past 60 days without a permit, makes the sign unpermitted under § 13-20-550: subject to Department of Buildings sign-permit enforcement and removal.
Frequently Asked Questions
Can I cover my whole storefront window with a sale sign?
Do I need a permit for a temporary paper window sign?
Does painted window lettering count toward the 25% cap?
Sources & Official References
Other rules in Chicago
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Window Signs in Nearby Cities
How other cities in Cook County handle window signs.