Glendale, AZ Outdoor Lighting: Light Trespass & Shielding (2026)

5-6(d) sets Glendale's light-trespass standard: low wattage, unshielded lighting devices may not be installed in a manner that directs light into adjacent properties, and flood and spot lights must be aimed so the high beam does not extend past a ground point whose distance from the supporting structure equals the height of the light above the ground. In practice, a floodlight mounted 10 feet up cannot throw its high beam more than 10 feet out from the pole or wall it is mounted on, which keeps the beam from crossing onto a neighbor's yard for typical residential mounting heights.

5-6(b) separately bars any shielded fixture, full or partial, from being aimed upward toward the sky. 5-9: the city serves the property owner, lessee, or person in control of the premises with a written notice describing the trespassing light and ordering it corrected within 30 days, and only after that period expires does the $300-per-day civil fine attach for each day the light keeps spilling onto the neighboring lot. The rule traces to Ordinance No. 1464, adopted December 9, 1986, and applies citywide to both residential and commercial fixtures alike.