Why Chicago signs get rejected
Chicago regulates on-premise signs by zoning district under Chapter 17-12 of the Zoning Ordinance. The other trap is motion: flashing signs are flatly prohibited in B1 and B2 districts, so a digital sign that's legal downtown can be illegal on a neighborhood commercial strip.
This tool reads the same zoning rules the Department of Buildings enforces and tells you where your plan stands before you pay for fabrication or file a permit.
Chicago sign rules by district
Whether flashing or LED signs are allowed in each commercial district class.
| District | Flashing/LED |
|---|---|
| B1 / B2 | Prohibited |
| B3 / C1 / C3 / DS | Allowed |
| C2 / M | C2 allowed / M prohibited |
| DC / DX (downtown) | Allowed |
Source: Chicago Zoning Ordinance §17-12-1003-E, §17-12-1005-C. Wall signs also capped at 33% of wall area; ground-floor tenants guaranteed at least 32 sq ft.
How to apply for a Chicago sign permit
Chicago splits into a zoning review and the permit itself, and two thresholds can add a whole extra approval on top.
Steps assembled from the confirmed items on this page. The city’s own application steps, submission documents and permit fees are set out in the three sections below. The city publishes no processing time.
Questions owners ask
Chicago sign permit: when you need one
Most signs in Chicago need a sign permit from the Department of Buildings. DOB Sign Permits · verified 2026-09-29
Off-premise (advertising) signs always require a permit, with no exemption. DOB Sign Permits · verified 2026-09-29
Four kinds of sign are listed as exceptions:
- Temporary window signs of paper, fabric or vinyl, displayed under 60 days and covering 25% or less of the window. DOB Sign Permits · verified 2026-09-29
- Window decals or adhesive signs covering 25% or less of the window. DOB Sign Permits · verified 2026-09-29
- Incidental signs — an address, an open/closed sign, a restroom sign — carrying no business name. DOB Sign Permits · verified 2026-09-29
- Official or warning signs required by law. DOB Sign Permits · verified 2026-09-29
Application steps
What you submit
Five items go in the package:
- The printed copy of the online application. DOB Sign Permits · verified 2026-09-29
- The supplemental paper application form. DOB Sign Permits · verified 2026-09-29
- An image or drawing of the proposed sign. DOB Sign Permits · verified 2026-09-29
- A plan or diagram of the proposed location. DOB Sign Permits · verified 2026-09-29
- Any architectural or engineering design documents. DOB Sign Permits · verified 2026-09-29
Deliver the package to the Chicago Department of Buildings, 121 N. LaSalle St., Room 900. DOB Sign Permits · verified 2026-09-29
Permit fees: zoning review and building review
The two reviews carry separate fees and both are charged on the same application. DOB Sign Permits · verified 2026-09-29
Zoning review fee — a flat amount by sign type. DOB Sign Permits · verified 2026-09-29
| Sign type | Zoning review fee |
|---|---|
| On-premise sign | $200.00 |
| Off-premise sign | $500.00 |
Building review fee — set by the sign’s area. DOB Sign Permits · verified 2026-09-29
| Sign area | Building review fee |
|---|---|
| 0–49 sq ft | $50.00 |
| 50–99 sq ft | $100.00 |
| 100–199 sq ft | $200.00 |
| 200–499 sq ft | $500.00 |
| 500 sq ft and above | $1,000.00 |
The checker above adds the two together for the area you enter, and shows the arithmetic. DOB Sign Permits · verified 2026-09-29
Review timeline: the city does not publish one — the Department of Buildings sign permit page states no processing time, so this page does not give a number. DOB Sign Permits · verified 2026-09-29
Timeline & temporary banners
Permit fees are set out in “Permit fees: zoning review and building review” above.
Source: City of Chicago Department of Buildings (Sign Permits). Fees change — confirm current figures with the Department of Buildings before filing. The city page states no review or processing time, so this page gives none.
Sources and official references: City of Chicago — Sign Permits (Department of Buildings). Measured on 21 August 2026: this city page carries the permit-fee amounts and the area thresholds quoted here. The 33% wall-coverage cap and the 32 sq ft ground-floor tenant minimum were read from the Chicago Zoning Ordinance §17-12-1003-E on 21 September 2026. The window-sign percentage this page used to quote has been removed: no readable copy of the current ordinance carried it. Re-read on 29 September 2026: the same Department of Buildings sign permit page carries the permit exemptions, the four application steps, the five submission documents, the Room 900 filing address, the $200.00 / $500.00 zoning review fees and the five-band building review fee schedule now set out in the four sections above and used by the fee total in the checker; the reading is stored verbatim at monitors/srccache/chicago_sign_permit_20260929.md. That page states no review or processing time, so this page gives none. Removed on 29 September 2026: the duplicate “What does a Chicago sign permit cost?” FAQ, together with its “paid by credit card up front before zoning review” wording and its citations to Municipal Code 17-13-0103-A and 13-32-310(E) — none of the three appear on the Department of Buildings sign permit page registered as this page’s source. The fee amounts themselves are on that page and are kept, in the fee section above and in the “How much is a Chicago sign permit fee?” FAQ.