Outdoor Lighting in Grand Junction, CO (2026)
2 verified outdoor lighting rules for Grand Junction, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Dark Sky Rules
Grand Junction's outdoor lighting chapter is written explicitly to protect the night sky. GJMC § 21.11.010 states the purpose as minimizing light pollution and light trespass, and § 21.11.030 backs that up with outright bans on mercury vapor and low-pressure sodium fixtures and on any lighting that spills upward into the sky.
Grand Junction dark-sky outdoor lighting rules
Heavy RestrictionsGrand Junction Municipal Code §§ 21.11.010, 21.11.030
The purpose of this section is to: ... Minimize light pollution, light trespass, and glare; ... Promote wildlife habitation and migration by minimizing light pollution into and adjacent to habitat areas; ... Protect and reclaim the ability to view the night sky. ... The following types of outdoor lighting are prohibited: ... Mercury vapor and low-pressure sodium lighting; ... Upward-directed li...
Light Trespass & Shielding
Grand Junction caps how much of your outdoor lighting can spill onto the neighbors. GJMC § 21.11.050(c) requires every fixture to be aimed and shielded within the property boundary and limits light measured at the property line to 0.2 footcandles from on-site sources.
Grand Junction light trespass property-line limit
Some RestrictionsGrand Junction Municipal Code § 21.11.050(c)
Shielding and Light Trespass. (1) All light fixtures shall be aimed and shielded so that the direct illumination shall be confined to the property boundaries of the light source. Lighting shall not be aimed onto adjacent properties, except in cases of shared parking, shared pedestrian pathways, or for coordinated development sites spanning multiple parcels. ... Light levels measured at the prop...
Looking for Mesa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Grand Junction city rules.
Outdoor Lighting in Mesa County →