DuPage County, IL Home Business: Signage Rules (2026)
Key Facts
- Max sign area
- 2 square feet
- Mounting
- Flat against wall/door, or 18" projection
- Other exterior signage
- None permitted (Sec. 37-418.1(A)(4))
- Enforcing agency
- Dept. of Economic Development & Planning
- Fine range
- $100-$500 per week (Sec. 37-1417)
Summary
Unincorporated DuPage County caps home occupation signage at one small nameplate. Zoning Ordinance Sec. 37-418.1(A)(5) limits the sign to two square feet and requires it to sit flat against a wall or door, or project no more than eighteen inches out, so patrons can safely approach. No other outdoor evidence of the business is allowed.
5.May display one (1) home occupation identification nameplate: The maximum area of such sign shall be no greater than two (2) square feet, and such sign shall be affixed flat against a wall or door or may extend up to eighteen inches (18″) from a wall provided safe access is available for patrons.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 14 Update 1).
Full Breakdown
1(A) treats a home occupation as an accessory use that must stay incidental to the residence itself. 3 forbids a separate entrance built to serve it. 5 is the operative signage rule: a home occupation may display one home occupation identification nameplate, capped at two square feet, mounted flat against a wall or door, or allowed to extend up to eighteen inches from the wall if patrons still have safe access. 12. Applications and interpretation questions go to the DuPage County Department of Economic Development and Planning, the office charged with administering Chapter 37.
A homeowner who wants a larger, illuminated, or freestanding sign for a home business has no path to one under this section; the nameplate limit applies regardless of the occupation type. General Zoning Ordinance enforcement in Section 37-1417 applies to a nonconforming sign the same as any other violation of Chapter 37.
Violations & Fines
A sign that exceeds two square feet, is illuminated, freestanding, or otherwise departs from Section 37-418.1(A)(5) is a Zoning Ordinance violation under Section 37-1417. The zoning official issues a notice of violation giving the owner fourteen days to correct the sign or request an administrative appeal; unresolved violations carry a fine of $100 to $500, with each week of continued noncompliance charged as a separate offense, plus court costs.
Frequently Asked Questions
Can I put up a lit or freestanding sign for my home business in unincorporated DuPage County?
Does the two-square-foot nameplate need a separate sign permit?
Can I run more than one home business from my house if each keeps its own small sign?
Sources & Official References
Other rules in DuPage County
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