Outdoor Lighting in Flagstaff, AZ (2026)
2 verified outdoor lighting rules for Flagstaff, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
Dark Sky Rules
In the City of Flagstaff, the world's first International Dark Sky City, Division 10-50.70 requires fully or partially shielded outdoor light fixtures, bans unshielded lighting aimed above the horizontal, and outlaws mercury vapor fixtures citywide except those installed before 1950.
Flagstaff's Dark Sky Outdoor Lighting Rules
Heavy RestrictionsFlagstaff Zoning Code §§ 10-50.70.010, 10-50.70.050.C, .D, .N
The City was recognized as the world’s first International Dark Sky City on October 24, 2001, for its pioneering development and implementation of lighting codes that balance the need to preserve Flagstaff’s dark sky resource with the need for safe outdoor lighting practices. ... ... C. Shielding. The standards provided in Table 10-50.70.050.C, Shielding Standards, shall apply: ... ... D. Effec...
Light Trespass & Shielding
In the City of Flagstaff, Section 10-50.70.050.E requires every outdoor light fixture to be aimed and shielded so its direct light stays within the property line, and any fixture over 10,000 lumens within 50 feet of a residential lot or right-of-way must carry a black-painted shield.
Flagstaff Light Trespass Standard for Fixtures
Significant RestrictionsFlagstaff Zoning Code § 10-50.70.050.E
E. Light Trespass Standard. 1. All Outdoor Light Fixtures, including motion sensing lighting, shall be located, aimed, and shielded so that the direct illumination from the fixture shall be confined to the property boundaries of the source. 2. Any privately or publicly owned Outdoor Light Fixture with an output over 10,000 Lumens located within 50 feet of any residential (including Mul...
Looking for Coconino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Flagstaff city rules.
Outdoor Lighting in Coconino County →