Seattle, WA Outdoor Lighting: Billboard Lighting (2026)
Lighting standards for outdoor advertising — luminance limits, dwell time, sky-glow mitigation, and curfew hours after which billboards must dim or shut off.
Research in progress
We are currently verifying Seattle's specific local ordinance for billboard lighting. In the meantime,Washington state law generally applies, and below you'll find guidance for finding the official rules and links to related Seattle ordinances we've already verified.
Washington State Law Context
Washington state law provides the baseline framework for billboard lighting across all municipalities in the state. Individual cities like Seattle may adopt additional local rules on top of state requirements, which is what makes checking your specific city ordinance important. For Seattle residents, the safest approach is to follow state law as a baseline and contact City Hall for any additional local requirements.
You can browse all Washington outdoor lighting to see how cities across the state regulate this topic.
How to find official Seattle Billboard Lighting rules
- Search for "Seattle WA municipal code" to find your city's online code portal (Municode, eCode360, or American Legal Publishing are the most common).
- Look for chapters covering outdoor lighting, zoning, nuisance, or property maintenance — that's where most billboard lighting rules live.
- Contact Seattle City Hall's code enforcement, planning, or community development department for clarification.
- Check with your HOA if applicable — many HOAs have stricter rules than the city itself.
Other outdoor lighting verified for Seattle
We've verified the following outdoor lighting for Seattle: