Dubuque, IA Outdoor Lighting: Dark Sky Rules (2026)
Key Facts
- Shielding angle
- Above 72 degrees from vertical
- Building-mounted fixtures
- Capped at roofline height
- Utility poles
- Wood poles temporary, construction only
- Wiring
- Underground, concealed inside posts
- Reviewing agency
- Planning Services / city planner
- First-offense penalty
- Up to $750 civil penalty
Summary
In the City of Dubuque, exterior site lighting must be shielded above seventy two degrees from vertical, a full cutoff standard aimed at cutting glare and sky glow. Fixtures mounted on buildings cannot rise above the roofline, and wiring to posts and fixtures must run underground.
B. The location and design of site lighting shall conform to the following: ... ... 3. All exterior lighting luminaries shall be designed and installed to shield light from the luminaire at angles above seventy two degrees (72°) from vertical; 4. Fixtures mounted on a building shall not be positioned higher than the roofline of the building;
Full Breakdown
Dubuque's Unified Development Code sets site lighting standards in Dubuque City Code § 16-13-3-2, reviewed by Planning Services as part of site plan approval for commercial, industrial and multi-family development. Every exterior luminaire must be designed and installed so light is shielded from the fixture at angles above seventy two degrees (72°) from vertical, the effective definition of a full cutoff or shielded fixture. Building-mounted fixtures cannot be positioned higher than the building's roofline, keeping wall packs and canopy lights from acting as unshielded floodlights over a wide radius.
Wooden utility-type poles are allowed only as temporary supports during construction, not as permanent fixtures, and every electrical service line running to a post or fixture must be installed underground and concealed inside the post itself, so no exposed conduit runs across a parking lot or yard. The standard traces to Ordinance 52-09 (October 19, 2009) and was amended by Ordinance 2-23 (January 17, 2023). The same section separately requires driveways, loading areas, pedestrian walkways and building entrances to be illuminated, so the shielding rule applies to lighting that is mandatory as well as optional.
Violations & Fines
The city planner investigates complaints and enforcement under Dubuque City Code § 16-1-10, issuing written orders identifying the violation and the required correction; failure to comply with an order is itself a further violation. Because Title 16 sets no dedicated penalty, an unshielded or noncompliant fixture is punishable as a municipal infraction under Dubuque City Code § 1-4-2: a civil penalty up to $750 for a first offense and up to $1,000 for repeat offenses, plus court costs, with each day of noncompliance a separate offense.
Frequently Asked Questions
Does Dubuque require shielded (cutoff) fixtures for new site lighting?
How high can a building-mounted light fixture sit in Dubuque?
Can a contractor use a temporary wood utility pole for job-site lighting?
Who enforces Dubuque's outdoor lighting shielding standard?
Sources & Official References
Other rules in Dubuque
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