2 county-level rules, plus city-specific rules for 1 city in Yakima County, Washington.
Verified from official government sources
Washington has no state dark-sky law, so Yakima relies on its Urban Area Zoning Ordinance. Site lighting must be shielded and directed away from neighbors, with down-shielding required near residential zones under YMC 15.06.100.
Yakima Municipal Code § 15.06.100
When provided, lighting shall be directed to reflect away from adjacent and abutting properties. Parking lots adjacent to residential districts or uses shall be designed with down-shielding and luminaries creating no lighting pollution upon those properties.
Yakima's Urban Area Zoning Ordinance bars outdoor lighting from spilling onto neighboring property. Under YMC 15.06.100, lighting must be directed to reflect away from adjacent and abutting properties, with down-shielding required near homes.
Yakima Municipal Code § 15.06.100
Lighting shall be provided to illuminate any off-street parking or loading space used at night. When provided, lighting shall be directed to reflect away from adjacent and abutting properties.
1 cities in Yakima County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
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