Dark Sky Rules: Auburn vs Renton
How do dark sky rules rules compare between Auburn, WA and Renton, WA?
Auburn and Renton have similar restriction levels.
Auburn, WA
King County
Auburn outdoor lighting standards in ACC Title 18 require shielded fixtures and limit light spill across property lines to protect neighbors and preserve night-sky quality in residential areas.
View full Auburn rules →Renton, WA
King County
Renton Municipal Code 4-4-075 regulates outdoor lighting in commercial and multifamily projects to control glare and light trespass. Full cutoff fixtures are generally required in new non-residential development.
View full Renton rules →Key Facts Comparison
| Fact | Auburn | Renton |
|---|---|---|
| Code | ACC Title 18 | - |
| Shielding | Full cutoff typical | - |
| Aiming | Downward, no trespass | - |
| Shoreline | Minimize over-water light | - |
| Plan | Photometrics for commercial | - |
| Code reference | - | RMC 4-4-075 |
| Cutoff required | - | Non-residential and multifamily |
| Pole height limit | - | Typically 20 to 25 feet |
| Trespass limit | - | About 0.5 foot-candles at residential property line |
| Single-family | - | Largely unregulated except nuisance |
Highlighted rows indicate differences between cities.
Auburn FAQ
Can I install floodlights on my Auburn garage?
Yes, if fixtures are shielded, aimed downward, and do not spill onto neighboring yards. Bright unshielded floodlights that reach neighbor windows often trigger a nuisance complaint.
Is Auburn an official dark-sky community?
Auburn is not certified by DarkSky International, but its outdoor lighting standards align with dark-sky principles by requiring shielded, downward-directed lighting.
Renton FAQ
Do residential porch lights need to be dark-sky compliant?
Single-family residential lighting is largely unregulated unless it becomes a nuisance to neighbors. Shielded fixtures are encouraged but not mandated.
What qualifies as a full cutoff fixture?
A fixture that emits zero light above the horizontal plane of the lamp, directing all output downward, as defined by IES TM-15.
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