2 county-level rules, plus city-specific rules for 1 city in Denver County, Colorado.
Verified from official government sources
Denver regulates outdoor lighting under DZC Article 10 and the Green Buildings Ordinance. New commercial and multifamily lighting must be fully shielded (full-cutoff), and LED color temperature should not exceed 3000K. Residential lighting is less regulated but must not create nuisance glare onto adjacent properties.
Denver prohibits light that unreasonably trespasses onto neighboring properties under DRMC §36 (Noise and Nuisance) and DZC standards. Residential property-line illuminance is capped at approximately 0.5-1.0 foot-candle. Complaints are handled by Neighborhood Inspection Services through 311.
1 cities in Denver County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
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