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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 Restrictions

Auburn requires all outdoor lighting fixtures covered by Chapter 18.55 ACC to be shielded on every side so the bulb…

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Bellingham

Some Restrictions

Large retail buildings in Bellingham, Washington must shield and aim outdoor lighting downward: upward-directed…

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Clark County

Some Restrictions

Clark County requires outdoor lights, except seasonal holiday lights, to be directed or shielded to minimize glare…

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Everett

Some Restrictions

Inside Everett's Central Waterfront Planning Area, in the Light Industrial and Heavy Industrial zones, site lighting…

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Kennewick

Some Restrictions

Kennewick requires all outdoor light fixtures installed since Chapter 18.39 took effect to be fully shielded so no…

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Kent

Some Restrictions

Kent's citywide performance standards forbid glare, whether from floodlights or from high-temperature processes like…

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King County

Some Restrictions

In the North Highline/White Center design-standards area of unincorporated King County, new and substantially improved…

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Kirkland

Some Restrictions

New development in Kirkland's NE 85th St. Station Area must shield exterior lighting to cut uplight and light trespass…

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Kitsap County

Some Restrictions

In nearly every zoning district of unincorporated Kitsap County, Section 17.420.030(C) requires outdoor lighting to be…

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Lakewood

Some Restrictions

Lakewood requires every outdoor luminaire to be fully shielded so no light escapes into the sky, and bans upward-aimed…

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Lynnwood

Some Restrictions

Lynnwood's Unified Development Code caps how much light a nonresidential or large multifamily site can put into the…

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Marysville

Some Restrictions

Marysville requires parking lots with 15 or more spaces to use full cut-off, dark-sky-rated light fixtures, capped at…

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Pasco

Some Restrictions

Pasco splits the city into two lighting zones and requires every outdoor lighting system to be shielded so the shield's…

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Pierce County

Some Restrictions

New residential, civic, commercial and industrial development in unincorporated Pierce County must shield exterior…

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Port Townsend

Some Restrictions

Commercial and mixed-use exterior lighting in Port Townsend must be full cutoff, downward-pointing, and shielded to cut…

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Renton

Some Restrictions

Renton requires exterior fixtures to be shielded and directed downward: building lights can't shine above the roofline…

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Skagit County

Some Restrictions

In unincorporated Skagit County, the Unified Development Code requires full cutoff outdoor lighting fixtures within 250…

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Snohomish County

Some Restrictions

Snohomish County has no blanket dark-sky law, but its zoning use matrix forces shielded lighting on two specific uses…

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Spokane County

Some Restrictions

Spokane County Zoning Code Chapter 14.826 requires that any outdoor lighting be positioned and shielded so it does not…

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Spokane Valley

Some Restrictions

Spokane Valley requires new or modified outdoor lighting on commercial and multifamily sites to be shielded so light…

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Tacoma

Some Restrictions

Outdoor light fixtures within 100 feet of a residential district in Tacoma must use full cutoff luminaires meeting the…

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Thurston County

Some Restrictions

Thurston County's Village Center Ordinance requires site lighting in the Lacey Urban Growth Area to limit glare and sky…

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Yakima County

Some Restrictions

Washington has no state dark-sky law, so Yakima relies on its Urban Area Zoning Ordinance. Site lighting must be…

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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 Restrictions

Auburn requires every outdoor light fixture to be shielded on all sides so the bulb itself cannot be seen from or…

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Bellingham

Some Restrictions

In Bellingham's Fountain District urban village, exterior building and aesthetic lighting can't exceed 1.5 footcandles…

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Clark County

Some Restrictions

Clark County requires outdoor lights (except holiday lights) to be directed or shielded so glare is minimized as seen…

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Cowlitz County

Some Restrictions

In unincorporated Cowlitz County's Agriculture-Industrial (AG-I) zone, Cowlitz County Code § 18.10.502(H) requires that…

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Edmonds

Some Restrictions

Edmonds requires external lights on any use to be shielded, trained or directed so they minimize glare onto adjacent…

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Everett

Some Restrictions

Everett requires parking-area security lighting to use full cut-off, dark-sky-rated fixtures mounted no higher than…

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Federal Way

Some Restrictions

FWRC 7.05.030 makes glare from any artificial surface a public nuisance and code violation whenever it annoys, injures…

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Grant County

Some Restrictions

Exterior lighting on any use or sign in unincorporated Grant County has to be shielded or recessed so glare and…

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Kennewick

Some Restrictions

Kennewick requires every outdoor light fixture installed since 2007 to be fully shielded so light does not spill above…

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Kent

Some Restrictions

Kent's zoning performance standards bar any direct or sky-reflected glare that is visible at a property's own lot…

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King County

Some Restrictions

In unincorporated King County's North Highline design-review area, new commercial and multifamily buildings must aim…

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Kirkland

Some Restrictions

Kirkland requires every development citywide to select, place and direct light sources so glare does not extend onto…

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Kitsap County

Some Restrictions

Kitsap County caps how much artificial light a development may throw onto neighboring land: Section 17.420.030(C)(1)…

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Lakewood

Some Restrictions

Lakewood's outdoor lighting code caps how much light a fixture can throw onto a neighbor's property. Under LMC…

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Lynnwood

Some Restrictions

Lynnwood requires outdoor lighting fixtures within 50 feet of a residential zone to stay under 15 feet high and be…

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Marysville

Some Restrictions

In Marysville's Downtown Master Plan Area, every outdoor light fixture must be fully shielded so no glare crosses onto…

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Pierce County

Some Restrictions

Pierce County's exterior illumination standards in PCC 18J.15.085 require lighting to avoid glare and light trespass…

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Port Townsend

Some Restrictions

Port Townsend requires shielded, downward-pointed exterior lighting to cut glare and nighttime light pollution on…

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Puyallup

Some Restrictions

In Puyallup's multifamily RM zones, building-mounted lighting must be aimed away from neighboring residences and…

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Renton

Some Restrictions

Renton flatly bars any use or activity from causing light trespass beyond a property's boundary lines, and the rule…

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Seattle

Some Restrictions

Seattle's Land Use Code requires exterior lighting on commercially zoned lots to be shielded and pointed away from…

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Skagit County

Some Restrictions

SCC 14.20.040 caps light spilling onto a neighbor's land at one foot-candle at the property boundary and requires full…

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Snohomish County

Some Restrictions

In unincorporated Snohomish County outdoor lighting must be hooded or shaded so that direct light does not glare onto…

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Spokane County

Some Restrictions

Under Spokane County Zoning Code 14.826.100, outdoor lights must be shielded so they do not shine directly onto a…

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Spokane Valley

Some Restrictions

Spokane Valley requires all outdoor lighting in residential zones to be shielded so it doesn't spill glare onto…

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Tacoma

Some Restrictions

Lighting on non-residential sites in Tacoma cannot exceed 3 lux at the property line of any adjacent residential…

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Thurston County

Some Restrictions

Thurston County's zoning code requires any operation that produces intense heat or glare to run inside an enclosure…

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Whatcom County

Some Restrictions

Whatcom County zoning requires outdoor lights be arranged to direct light away from adjoining property and public…

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Yakima

Some Restrictions

Yakima requires parking lot lighting near homes to use down-shielding so no glare or light pollution spills onto…

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Yakima County

Some Restrictions

Every exterior light fixture on a use or sign in unincorporated Yakima County has to be shielded and aimed downward…

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Franklin County

Light Restrictions

Franklin County requires outdoor residential lighting in all residential zoning districts to be arranged so it does not…

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Sammamish

Light Restrictions

Within Sammamish's shoreline jurisdiction along Lake Sammamish, Pine Lake, and Beaver Lake, SMC 25.06.020(6) bars…

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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 Restrictions

Port Townsend's sign code defines billboard signs as off-premises advertising displays and prohibits them outright…

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Spokane County

Heavy Restrictions

Billboards are banned outright in every zone in unincorporated Spokane County under SCC 14.804.050(10), so there is no…

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Lynnwood

Significant Restrictions

Lynnwood bans erecting any new billboard citywide, and every illuminated sign, including a legally existing billboard…

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Snohomish County

Significant Restrictions

SCC 30.27.080(8) caps digital billboard brightness at 5,000 nits by day and only 500 nits between sunset and sunrise as…

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Tacoma

Significant Restrictions

Tacoma bans internally illuminated and flashing billboards and requires all billboard lighting to shut off between…

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Yakima

Significant Restrictions

Billboards within one hundred fifty to three hundred feet of a residential district in Yakima must be capped at one…

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Yakima County

Significant Restrictions

Yakima County bars illuminated billboards near homes under Code § 19.20.130. Off-premises signs, including billboards…

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Everett

Some Restrictions

Everett requires billboard lighting to be shielded so it doesn't affect nearby homes or drivers, bans blinking and…

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King County

Some Restrictions

Unincorporated King County allows billboards to be illuminated, but light sources must sit no farther from the sign…

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Lakewood

Some Restrictions

Lakewood, Washington restricts billboard illumination under LMC 18A.100.080(D)(6)(c). Billboards may not carry…

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Pasco

Some Restrictions

Pasco's outdoor lighting chapter expressly includes billboard lighting as a regulated fixture. Illuminating an outdoor…

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Pierce County

Some Restrictions

Pierce County bans flashing, intermittent or moving billboard lights outright under PCC 18A.55.010.E. Any other…

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Seattle

Some Restrictions

SMC 23.55.014(E)(3) caps how brightly Seattle billboards and other off-premises signs can be lit: incandescent…

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Spokane Valley

Some Restrictions

Spokane Valley has no lighting standard written specifically for billboards; instead, the general sign-lighting rule in…

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