Outdoor Lighting in Kennewick, WA (2026)
2 verified outdoor lighting rules for Kennewick, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Dark Sky Rules
Kennewick requires all outdoor light fixtures installed since Chapter 18.39 took effect to be fully shielded so no direct light shines above the horizontal, and directed downward to stay off neighboring property.
Kennewick Outdoor Light Shielding Rules
Some RestrictionsKennewick Municipal Code § 18.39.030 (Ord. 5180 Sec. 1, 2007)
(1)Uplight Shielding. Unless otherwise provided for in this Chapter, all outdoor light fixtures, installed after the enactment of this Chapter, shall be fully shielded in such a manner that the center of light source shall be level or above the edge of the light fixture so that direct light emitted above the horizontal is minimized. All outdoor lighting fixtures, in lieu of shields, shall be eq...
Light Trespass & Shielding
Kennewick requires every outdoor light fixture installed since 2007 to be fully shielded so light does not spill above the horizontal and does not shine past the fixture's own property line, the City's core defense against light trespass onto a neighbor's land under KMC 18.39.030.
Kennewick Outdoor Lighting Shielding Rule
Some RestrictionsKennewick Municipal Code § 18.39.030(1) (Ord. 5180 Sec. 1, 2007)
(1)Uplight Shielding. Unless otherwise provided for in this Chapter, all outdoor light fixtures, installed after the enactment of this Chapter, shall be fully shielded in such a manner that the center of light source shall be level or above the edge of the light fixture so that direct light emitted above the horizontal is minimized. All outdoor lighting fixtures, in lieu of shields, shall be eq...
Looking for Benton County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Kennewick city rules.
Outdoor Lighting in Benton County →