Light Trespass: Fairfax vs Herndon
How do light trespass rules compare between Fairfax, VA and Herndon, VA?
Fairfax and Herndon have similar restriction levels.
Fairfax, VA
Fairfax County
Fairfax County's outdoor lighting standards address light pollution and skyglow by requiring full-cutoff fixtures, limiting wattage/lumens, setting maximum light levels at property lines, and imposing curfew provisions on commercial uses. The county has not adopted formal Dark Sky status but follows similar principles in the Zoning Ordinance Article 5 lighting provisions.
View full Fairfax rules →Herndon, VA
Fairfax County
Herndon regulates exterior lighting through its Zoning Ordinance to prevent light trespass onto neighboring properties. Fixtures must be shielded and direct light downward. Commercial and multifamily properties have specific foot-candle limits at property lines. Residential conflicts are handled through code enforcement.
View full Herndon rules →Key Facts Comparison
| Fact | Fairfax | Herndon |
|---|---|---|
| Fact | Full-cutoff fixtures required for most new outdoor lighting | Full cutoff fixtures required |
Highlighted rows indicate differences between cities.
Fairfax FAQ
Does Fairfax County have a dark sky ordinance?
Not formally branded as such, but the Zoning Ordinance's outdoor lighting standards require full-cutoff fixtures and light trespass limits that embody dark-sky principles.
What about string lights in my backyard?
Residential decorative string lights are generally exempt. They should still not create glare or light trespass onto neighbors, and your HOA may have seasonal time limits.
Can commercial parking lots stay lit all night?
Generally no. Many zoning districts require parking lot lighting to reduce to security-level illumination or turn off after business hours plus a set period.
Herndon FAQ
My neighbors floodlight shines in my bedroom. What can I do?
First, ask them to shield or re-aim it. If unresolved, file a complaint with Herndon Code Enforcement citing light trespass under the Town nuisance provisions.
Are Christmas lights regulated?
Decorative holiday lights are generally allowed without restriction from Thanksgiving through mid-January. Year-round decorative lighting may fall under light trespass rules.
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