Outdoor Lighting in Washington (2026)
69 rules on the books across Washington, 33 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Dark Sky Rules
Ordinances designed to reduce light pollution, including requirements for shielded fixtures, limits on brightness, and curfews for decorative lighting.
Auburn
Some RestrictionsAuburn requires all outdoor lighting fixtures covered by Chapter 18.55 ACC to be shielded on every side so the bulb…
Read full rule →Bellingham
Some RestrictionsLarge retail buildings in Bellingham, Washington must shield and aim outdoor lighting downward: upward-directed…
Read full rule →Clark County
Some RestrictionsClark County requires outdoor lights, except seasonal holiday lights, to be directed or shielded to minimize glare…
Read full rule →Everett
Some RestrictionsInside Everett's Central Waterfront Planning Area, in the Light Industrial and Heavy Industrial zones, site lighting…
Read full rule →Kennewick
Some RestrictionsKennewick requires all outdoor light fixtures installed since Chapter 18.39 took effect to be fully shielded so no…
Read full rule →Kent
Some RestrictionsKent's citywide performance standards forbid glare, whether from floodlights or from high-temperature processes like…
Read full rule →King County
Some RestrictionsIn the North Highline/White Center design-standards area of unincorporated King County, new and substantially improved…
Read full rule →Kirkland
Some RestrictionsNew development in Kirkland's NE 85th St. Station Area must shield exterior lighting to cut uplight and light trespass…
Read full rule →Kitsap County
Some RestrictionsIn nearly every zoning district of unincorporated Kitsap County, Section 17.420.030(C) requires outdoor lighting to be…
Read full rule →Lakewood
Some RestrictionsLakewood requires every outdoor luminaire to be fully shielded so no light escapes into the sky, and bans upward-aimed…
Read full rule →Lynnwood
Some RestrictionsLynnwood's Unified Development Code caps how much light a nonresidential or large multifamily site can put into the…
Read full rule →Marysville
Some RestrictionsMarysville requires parking lots with 15 or more spaces to use full cut-off, dark-sky-rated light fixtures, capped at…
Read full rule →Pasco
Some RestrictionsPasco splits the city into two lighting zones and requires every outdoor lighting system to be shielded so the shield's…
Read full rule →Pierce County
Some RestrictionsNew residential, civic, commercial and industrial development in unincorporated Pierce County must shield exterior…
Read full rule →Port Townsend
Some RestrictionsCommercial and mixed-use exterior lighting in Port Townsend must be full cutoff, downward-pointing, and shielded to cut…
Read full rule →Renton
Some RestrictionsRenton requires exterior fixtures to be shielded and directed downward: building lights can't shine above the roofline…
Read full rule →Skagit County
Some RestrictionsIn unincorporated Skagit County, the Unified Development Code requires full cutoff outdoor lighting fixtures within 250…
Read full rule →Snohomish County
Some RestrictionsSnohomish County has no blanket dark-sky law, but its zoning use matrix forces shielded lighting on two specific uses…
Read full rule →Spokane County
Some RestrictionsSpokane County Zoning Code Chapter 14.826 requires that any outdoor lighting be positioned and shielded so it does not…
Read full rule →Spokane Valley
Some RestrictionsSpokane Valley requires new or modified outdoor lighting on commercial and multifamily sites to be shielded so light…
Read full rule →Tacoma
Some RestrictionsOutdoor light fixtures within 100 feet of a residential district in Tacoma must use full cutoff luminaires meeting the…
Read full rule →Thurston County
Some RestrictionsThurston County's Village Center Ordinance requires site lighting in the Lacey Urban Growth Area to limit glare and sky…
Read full rule →Yakima County
Some RestrictionsWashington has no state dark-sky law, so Yakima relies on its Urban Area Zoning Ordinance. Site lighting must be…
Read full rule →Light Trespass & Shielding
Rules preventing outdoor lights from shining onto neighboring homes, shielding and full-cutoff fixture requirements, aiming standards, and footcandle caps at the property line.
Auburn
Some RestrictionsAuburn requires every outdoor light fixture to be shielded on all sides so the bulb itself cannot be seen from or…
Read full rule →Bellingham
Some RestrictionsIn Bellingham's Fountain District urban village, exterior building and aesthetic lighting can't exceed 1.5 footcandles…
Read full rule →Clark County
Some RestrictionsClark County requires outdoor lights (except holiday lights) to be directed or shielded so glare is minimized as seen…
Read full rule →Cowlitz County
Some RestrictionsIn unincorporated Cowlitz County's Agriculture-Industrial (AG-I) zone, Cowlitz County Code § 18.10.502(H) requires that…
Read full rule →Edmonds
Some RestrictionsEdmonds requires external lights on any use to be shielded, trained or directed so they minimize glare onto adjacent…
Read full rule →Everett
Some RestrictionsEverett requires parking-area security lighting to use full cut-off, dark-sky-rated fixtures mounted no higher than…
Read full rule →Federal Way
Some RestrictionsFWRC 7.05.030 makes glare from any artificial surface a public nuisance and code violation whenever it annoys, injures…
Read full rule →Grant County
Some RestrictionsExterior lighting on any use or sign in unincorporated Grant County has to be shielded or recessed so glare and…
Read full rule →Kennewick
Some RestrictionsKennewick requires every outdoor light fixture installed since 2007 to be fully shielded so light does not spill above…
Read full rule →Kent
Some RestrictionsKent's zoning performance standards bar any direct or sky-reflected glare that is visible at a property's own lot…
Read full rule →King County
Some RestrictionsIn unincorporated King County's North Highline design-review area, new commercial and multifamily buildings must aim…
Read full rule →Kirkland
Some RestrictionsKirkland requires every development citywide to select, place and direct light sources so glare does not extend onto…
Read full rule →Kitsap County
Some RestrictionsKitsap County caps how much artificial light a development may throw onto neighboring land: Section 17.420.030(C)(1)…
Read full rule →Lakewood
Some RestrictionsLakewood's outdoor lighting code caps how much light a fixture can throw onto a neighbor's property. Under LMC…
Read full rule →Lynnwood
Some RestrictionsLynnwood requires outdoor lighting fixtures within 50 feet of a residential zone to stay under 15 feet high and be…
Read full rule →Marysville
Some RestrictionsIn Marysville's Downtown Master Plan Area, every outdoor light fixture must be fully shielded so no glare crosses onto…
Read full rule →Pierce County
Some RestrictionsPierce County's exterior illumination standards in PCC 18J.15.085 require lighting to avoid glare and light trespass…
Read full rule →Port Townsend
Some RestrictionsPort Townsend requires shielded, downward-pointed exterior lighting to cut glare and nighttime light pollution on…
Read full rule →Puyallup
Some RestrictionsIn Puyallup's multifamily RM zones, building-mounted lighting must be aimed away from neighboring residences and…
Read full rule →Renton
Some RestrictionsRenton flatly bars any use or activity from causing light trespass beyond a property's boundary lines, and the rule…
Read full rule →Seattle
Some RestrictionsSeattle's Land Use Code requires exterior lighting on commercially zoned lots to be shielded and pointed away from…
Read full rule →Skagit County
Some RestrictionsSCC 14.20.040 caps light spilling onto a neighbor's land at one foot-candle at the property boundary and requires full…
Read full rule →Snohomish County
Some RestrictionsIn unincorporated Snohomish County outdoor lighting must be hooded or shaded so that direct light does not glare onto…
Read full rule →Spokane County
Some RestrictionsUnder Spokane County Zoning Code 14.826.100, outdoor lights must be shielded so they do not shine directly onto a…
Read full rule →Spokane Valley
Some RestrictionsSpokane Valley requires all outdoor lighting in residential zones to be shielded so it doesn't spill glare onto…
Read full rule →Tacoma
Some RestrictionsLighting on non-residential sites in Tacoma cannot exceed 3 lux at the property line of any adjacent residential…
Read full rule →Thurston County
Some RestrictionsThurston County's zoning code requires any operation that produces intense heat or glare to run inside an enclosure…
Read full rule →Whatcom County
Some RestrictionsWhatcom County zoning requires outdoor lights be arranged to direct light away from adjoining property and public…
Read full rule →Yakima
Some RestrictionsYakima requires parking lot lighting near homes to use down-shielding so no glare or light pollution spills onto…
Read full rule →Yakima County
Some RestrictionsEvery exterior light fixture on a use or sign in unincorporated Yakima County has to be shielded and aimed downward…
Read full rule →Franklin County
Light RestrictionsFranklin County requires outdoor residential lighting in all residential zoning districts to be arranged so it does not…
Read full rule →Sammamish
Light RestrictionsWithin Sammamish's shoreline jurisdiction along Lake Sammamish, Pine Lake, and Beaver Lake, SMC 25.06.020(6) bars…
Read full rule →Billboard Lighting
Lighting standards for outdoor advertising, luminance limits, dwell time, sky-glow mitigation, and curfew hours after which billboards must dim or shut off.
Port Townsend
Heavy RestrictionsPort Townsend's sign code defines billboard signs as off-premises advertising displays and prohibits them outright…
Read full rule →Spokane County
Heavy RestrictionsBillboards are banned outright in every zone in unincorporated Spokane County under SCC 14.804.050(10), so there is no…
Read full rule →Lynnwood
Significant RestrictionsLynnwood bans erecting any new billboard citywide, and every illuminated sign, including a legally existing billboard…
Read full rule →Snohomish County
Significant RestrictionsSCC 30.27.080(8) caps digital billboard brightness at 5,000 nits by day and only 500 nits between sunset and sunrise as…
Read full rule →Tacoma
Significant RestrictionsTacoma bans internally illuminated and flashing billboards and requires all billboard lighting to shut off between…
Read full rule →Yakima
Significant RestrictionsBillboards within one hundred fifty to three hundred feet of a residential district in Yakima must be capped at one…
Read full rule →Yakima County
Significant RestrictionsYakima County bars illuminated billboards near homes under Code § 19.20.130. Off-premises signs, including billboards…
Read full rule →Everett
Some RestrictionsEverett requires billboard lighting to be shielded so it doesn't affect nearby homes or drivers, bans blinking and…
Read full rule →King County
Some RestrictionsUnincorporated King County allows billboards to be illuminated, but light sources must sit no farther from the sign…
Read full rule →Lakewood
Some RestrictionsLakewood, Washington restricts billboard illumination under LMC 18A.100.080(D)(6)(c). Billboards may not carry…
Read full rule →Pasco
Some RestrictionsPasco's outdoor lighting chapter expressly includes billboard lighting as a regulated fixture. Illuminating an outdoor…
Read full rule →Pierce County
Some RestrictionsPierce County bans flashing, intermittent or moving billboard lights outright under PCC 18A.55.010.E. Any other…
Read full rule →Seattle
Some RestrictionsSMC 23.55.014(E)(3) caps how brightly Seattle billboards and other off-premises signs can be lit: incandescent…
Read full rule →Spokane Valley
Some RestrictionsSpokane Valley has no lighting standard written specifically for billboards; instead, the general sign-lighting rule in…
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