Dark Sky Rules: Fairfax vs Vienna
How do dark sky rules rules compare between Fairfax, VA and Vienna, VA?
Fairfax and Vienna have similar restriction levels.
Fairfax, VA
Fairfax County
The City of Fairfax does not have formal Dark Sky designation but its lighting ordinance incorporates Dark Sky principles through full-cutoff fixture requirements and light trespass limits. Warm-color LED is encouraged in newer standards. No specific color temperature cap exists in current code.
View full Fairfax rules →Vienna, VA
Fairfax County
Vienna regulates outdoor lighting through its zoning ordinance to prevent glare, light trespass, and excessive illumination of neighboring properties. Residential fixtures must be shielded so the light source is not directly visible from adjacent properties, and floodlights pointed at neighboring homes violate nuisance standards.
View full Vienna rules →Key Facts Comparison
| Fact | Fairfax | Vienna |
|---|---|---|
| Fact | No formal Dark Sky designation | Fixtures must be shielded to prevent light trespass |
Highlighted rows indicate differences between cities.
Fairfax FAQ
Does Fairfax have Dark Sky rules?
Fairfax is not an International Dark-Sky designated community, but the lighting ordinance follows Dark Sky principles including full-cutoff fixtures and light trespass limits.
Can I require my neighbor to use warm-color LEDs?
No specific color temperature standard exists in residential code. You can only enforce light trespass limits where the light directly shines onto your property.
Vienna FAQ
Can I install a motion security light on my garage?
Yes, as long as it is aimed down onto your own property and does not shine directly into a neighbor's windows or yard.
Are string lights allowed in my backyard?
Yes. Decorative string lights are allowed and are rarely subject to enforcement unless they produce documented light trespass onto a neighbor.
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