Dark Sky Rules: Bellevue vs Seattle
How do dark sky rules rules compare between Bellevue, WA and Seattle, WA?
Bellevue and Seattle have similar restriction levels.
Bellevue, WA
King County
Bellevue is not a designated dark-sky community but regulates outdoor lighting via LUC 20.20.522. Fixtures must be shielded and directed downward to prevent glare.
View full Bellevue rules →Seattle, WA
King County
Seattle Municipal Code regulates outdoor lighting through zoning standards in §23.45 (residential) and §23.47A (commercial). Fully-shielded fixtures are required on new commercial installations, light trespass is capped at 0.5 foot-candles at residential lines, and recent rules cap color temperature at 3000K. Seattle works with King County on regional dark-sky alignment.
View full Seattle rules →Key Facts Comparison
| Fact | Bellevue | Seattle |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Bellevue FAQ
Seattle FAQ
Do I need to replace existing fixtures?
No. Pre-existing fixtures are grandfathered. New installations, replacements, and major remodels must comply with current SMC standards.
Are holiday lights exempt?
Yes. Seasonal decorative lighting is exempt November 15 to January 15 provided fixtures aren't aimed at the sky or laser-projected.
What color temperature is allowed?
New outdoor LEDs are capped at 3000K under the 2022 amendment. Warm-white 2700K is encouraged for residential.
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