Sign Regulations in Sun Prairie, WI (2026)
4 verified sign regulations for Sun Prairie, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
Garage Sale Signs
Sun Prairie caps every garage-sale sign at six square feet with no more than two faces, requires the sign to state the sale's location and sit off the city right-of-way, and bans it from going up more than a day before the sale or staying up more than a day after, under Code § 5.36.030.
Sun Prairie Garage Sale Sign Rules
Some RestrictionsSun Prairie Code of Ordinances § 5.36.030
A.Garage sale signs may not have an area more than six square feet with a maximum of two faces. Garage sale signs shall identify the location of the sale and must be located off of the city right-of-way.B.No garage sale sign may be located on utility poles, traffic control devices, or on property or the adjoining right-of-way of property the owner of which has not given explicit permission for ...
Holiday Displays
Sun Prairie exempts holiday and civic-event decorations from its sign permit process entirely, with no duration limit, size cap, or fee tied specifically to the display, unlike the code's dedicated business temporary-sign categories.
Sun Prairie Holiday Sign Exemption
Few RestrictionsSun Prairie Code of Ordinances § 17.40.050(J)
Signs are permitted in all zoning districts for the following uses and purposes without the need for a sign permit. Such signs shall not count as part of the maximum permitted sign area, maximum number of signs per lot or building, but shall comply with general sign setback requirements. ... J.Holiday Signs and Decorations. Temporary displays as part of a holiday or civic event.
Digital Billboards
Sun Prairie does not allow new billboards outright, but Section 17.40.080(C)(1) lets the owner of a legal nonconforming billboard swap it for a digital sign through a conditional use permit, capped by state law and hedged with brightness, setback and design conditions.
Sun Prairie Digital Billboard Replacement Rules
Significant RestrictionsSun Prairie Code of Ordinances § 17.40.080(C)(1)
1.Billboard Replacement Program. An owner of a legally nonconforming billboard sign existing upon the effective date of this chapter may apply for a conditional use permit to replace an existing billboard sign with a digital billboard sign within the following parameters:a.The sign shall comply with the standards contained in Section 84.30(4), Wisconsin Statutes.b.The area of the digital billbo...
Window Signs
Window signs in the City of Sun Prairie cannot cover more than fifty percent of the glass on any building plane. The rule sits in the zoning code's sign-permit-exemption section, so a compliant window sign needs no permit, but a business that papers over half its storefront glass is simply not allowed under Section 17.40.050(T).
Sun Prairie Window Sign Coverage Limit
Some RestrictionsSun Prairie Code of Ordinances § 17.40.050(T)
T.Window Signs and Window Displays.1.Signs only for windows, doors or openings as set forth in the definition of "window sign" that are located on the first and second floors of the building frontage.2.Signs shall be mounted on the inside of or painted on windows, doors or openings as set forth in the definition of "window sign."3.No permanent and/or temporary window sign shall occupy more than...
Looking for Dane County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Sun Prairie city rules.
Sign Regulations in Dane County →