Iowa City, IA Outdoor Lighting: Billboard Lighting (2026)
Key Facts
- Illumination
- Not allowed on billboards
- Permit
- None required for a billboard
- Max area
- 72 sq ft (144 sq ft double-faced)
- Max height
- 25 feet
- Spacing
- 300 ft from another off-premises sign
- Buffer
- 120 ft from residential zones, parks, schools
Summary
Iowa City's zoning code flatly bans illumination on billboards and other off-premises signs. Under Table 5B-6 of the sign ordinance, billboards get no permit requirement but zero light: no internal, external, or backlighting of any kind is allowed on these structures.
14-5B-9: OFF PREMISES AND TEMPORARY SIGNS: A. ... In addition to the signage permitted in each zone, as described in section 14-5B-8 of this article, the following signs may be installed in any zone according to the specifications and provisions contained in table 5B-6 of this section... ... Table 5B-6: ... Sign Specifications And Provisions For Off Premises And Temporary Signs... ... Billboard signs shall not apply toward maximum sign allowance for the lot or tract. No permit is required... No illumination is allowed.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-26: Code current through: Ord. 26-4985, passed May 19, 2026).
Full Breakdown
" Section 14-5B-9 authorizes off-premises and temporary signs to be installed according to the specifications in Table 5B-6 (Sign Specifications And Provisions For Off Premises And Temporary Signs), enacted by Ordinance 08-4319 on November 3, 2008. That table caps a billboard at 72 square feet (144 square feet if double-faced) and 25 feet in height, bars placement within 300 feet of another off-premises sign, and bars placement within 120 feet of a residential zone, park or open space, educational facility, religious or private group assembly use, public museum, or government administrative or judicial office.
Billboards are prohibited outright in residential zones and in the CO-1, CN-1, CB-5, CB-10, ORP, and RDP zones. Within the zones where a billboard is otherwise allowed, the Provisions column of Table 5B-6 states that billboard signage does not count toward the property's overall maximum sign allowance and that no permit is required to erect one, but it then imposes the flat illumination ban that makes billboards a poor lighting option: the sign cannot be lit at all, internally or externally. This sits alongside the code's general sign-illumination standard in 14-5B-4E, which governs lighting for signs that are allowed to be lit; billboards are carved out of that permission entirely rather than given a brightness or hooding limit.
Violations & Fines
Because Table 5B-6 makes billboard illumination an outright prohibition rather than a permitted-with-conditions use, an illuminated billboard is a zoning code violation enforceable by the City's Neighborhood and Development Services (Building Inspection) division under the sign ordinance's general enforcement provisions. The remedy is removal or de-energizing of the illumination; because no permit is issued for billboards in the first place, there is no permit to revoke, so enforcement runs through the City's standard municipal code violation and abatement process rather than a permit hearing.
Frequently Asked Questions
Can a billboard in Iowa City be lit up at night?
Does an illuminated billboard need a permit in Iowa City first?
Where are billboards allowed at all in Iowa City?
Sources & Official References
Other rules in Iowa City
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