Outdoor Lighting in Coconino County, AZ (2026)
2 rules for unincorporated Coconino County, Arizona.
Verified from official government sources
Dark Sky Rules
Flagstaff was named the world's first International Dark Sky City in 2001. Its Zoning Code and the Coconino County lighting ordinance cap outdoor light output, require full shielding, and mandate amber-toned lamps to protect Lowell Observatory and Naval Observatory Flagstaff Station.
Flagstaff & Coconino County Dark Sky Rules
Heavy RestrictionsFlagstaff Zoning Code Div. 10-50.70 (Purpose)
The City was recognized as the world's first International Dark Sky City on October 24, 2001 for its pioneering work in the development and implementation of lighting codes that balance the need to preserve Flagstaff's dark sky resource with the need for safe lighting practices.
Light Trespass & Shielding
Outdoor light fixtures in unincorporated Coconino County must be aimed and shielded so illumination stays inside the property line. Section 4.3.D.5 requires shielding on any fixture over 10,000 lumens within 50 feet of a residence or right-of-way, with the shield's exterior painted black to cut reflected glare.
Coconino County Light Trespass Standard
Some RestrictionsCoconino County Zoning Ordinance § 4.3.D.5
5. Light Trespass Standard. A. 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. B. Any privately or publicly owned Outdoor Light Fixture with an output over 10,000 Lumens located within 50 feet of any residential (including Multiple-Fam...
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