Outdoor Lighting in Cowlitz County, WA (2026)
1 rule for unincorporated Cowlitz County, Washington.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Cowlitz County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Light Trespass & Shielding
In unincorporated Cowlitz County's Agriculture-Industrial (AG-I) zone, Cowlitz County Code § 18.10.502(H) requires that lighting on commercial or light industrial development be directed, shielded or screened so it is not cast, directly or indirectly, into adjacent or nearby residential areas or into the eyes of motorists on public or private roads.
Outdoor Lighting Glare Standard in Cowlitz County
Some RestrictionsCowlitz County Code § 18.10.502(H)
The following performance standards apply to any commercial or light industrial use in the AG-I zone, and are in addition to other applicable standards. ... H. Glare. ... Lighting shall be directed, shielded or screened so that it will not be directly or indirectly cast into adjacent or nearby residential areas, or hinder motorists on public or private roads.
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