2 county-level rules, plus city-specific rules for 10 cities in Maricopa County, Arizona.
Verified from official government sources
Maricopa County has adopted a Dark Sky Ordinance incorporated into Section 812 of the Maricopa County Zoning Ordinance. The ordinance controls outdoor artificial lighting to reduce light pollution that impacts astronomical observations, conserve energy, and improve nighttime safety. Outdoor lighting must be shielded to prevent upward light emission. The ordinance is particularly important given proximity to astronomical observatories.
Maricopa County's Dark Sky Ordinance (MCZO Section 812) addresses light trespass as part of its outdoor lighting regulations. Outdoor lighting must be directed and shielded to prevent light from spilling onto adjacent properties. The county's noise ordinance (P-23) also references the 500-foot measurement for nuisance impacts, and similar proximity standards apply to lighting complaints.
10 cities in Maricopa County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
2 verified rules • Dark Sky Rules, Light Trespass
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