Casper, WY Outdoor Lighting: Light Trespass & Shielding (2026)

The light-trespass rule sits inside Casper's general off-street parking requirements, which the code states are meant to serve occupants, customers and visitors while regulating traffic flow. Item 14 of § 17.12.070(A) singles out lighting fixtures: they must be designed and installed so illumination is directed away from abutting residential properties, protecting neighboring homes from parking-lot glare, and the fixtures cannot interfere with traffic signals. The same provision sets a thirty-foot cap on light pole height, and the only way to build taller is a variance granted by the Planning and Zoning Commission.

Because this sits within the parking chapter rather than a stand-alone lighting ordinance, it applies to every off-street parking facility built or altered under Title 17, not just facilities next to housing, though the direction requirement is written specifically to protect abutting residential property. Compliance is checked well before construction: the site plan checklist at § 17.12.150(K) requires applicants to show the location of all existing and proposed exterior lighting, and the community development director or the commission reviews that lighting layout alongside the rest of the site plan before a building permit can issue under § 17.12.250.