Light Trespass: Renton vs Seattle
How do light trespass rules compare between Renton, WA and Seattle, WA?
Renton and Seattle have similar restriction levels.
Renton, WA
King County
Renton limits light spillover onto neighbor property under RMC 4-4-075, generally to about 0.5 foot-candles at residential property lines. Nuisance lighting complaints are investigated by Code Compliance.
View full Renton rules →Seattle, WA
King County
Seattle addresses light trespass through land use code development standards and general nuisance provisions, requiring outdoor lighting to be directed downward and shielded to prevent spillover onto adjacent properties.
View full Seattle rules →Key Facts Comparison
| Fact | Renton | Seattle |
|---|---|---|
| Spillover limit | About 0.5 foot-candles at residential line | - |
| Full cutoff | Required on non-residential | - |
| Nuisance | RMC Title 1 for excessive lighting | - |
| Complaints | Renton Code Compliance (425) 430-7373 | - |
| Common law | Nuisance remedies under WA law | - |
| Commercial Standard | - | Shielded, downward-directed fixtures required for commercial development |
| Design Review | - | Larger projects evaluated for lighting neighborhood compatibility |
| Nuisance Provision | - | SMC 10.09 covers unreasonable light trespass |
| Complaint Process | - | SDCI handles complaints about commercial and multifamily lighting |
Highlighted rows indicate differences between cities.
Renton FAQ
My neighbors security light shines in my bedroom. What can I do?
Talk with the neighbor first. If that fails, contact Renton Code Compliance to investigate whether it rises to a nuisance under city code.
Is there a specific decibel-like metric for light brightness?
Yes. Light levels are measured in foot-candles or lux at the property line with a calibrated meter during nighttime hours.
Seattle FAQ
What can I do about a neighbor's security light shining into my bedroom?
Start by talking to your neighbor, as many are willing to adjust their lighting. If that fails, you can file a nuisance complaint under SMC 10.09 for unreasonable light trespass. For commercial or multifamily properties with non-compliant lighting, file a complaint with SDCI, which can enforce land use code lighting standards.
Are there specific light trespass standards in Seattle?
Seattle does not have specific foot-candle limits for light trespass at property lines like some jurisdictions. Instead, the land use code requires shielded, downward-directed lighting for new development, and the general nuisance ordinance addresses unreasonable light conditions that interfere with neighboring property use.
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