Light Trespass: Marana vs Oro Valley
How do light trespass rules compare between Marana, AZ and Oro Valley, AZ?
Marana has fewer restrictions than Oro Valley.
Marana, AZ
Pima County
Marana and Pima County dark-sky regulations prohibit outdoor lighting from trespassing onto neighboring properties. All fixtures must be fully shielded and aimed to contain light within the property boundary. Complaints handled through code enforcement.
View full Marana rules →Oro Valley, AZ
Pima County
Oro Valley prohibits light trespass onto adjacent property, setting a 0.1 foot-candle limit at residential property lines. All fixtures must direct light downward within property boundaries.
View full Oro Valley rules →Key Facts Comparison
| Fact | Marana | Oro Valley |
|---|---|---|
| Standard | Light must not cross property lines | - |
| Fixture Type | Full cutoff shielding required | - |
| Security Lights | Must be shielded and aimed downward | - |
| Complaint Process | Marana Code Enforcement | - |
| Property Line Limit | - | 0.1 foot-candles (residential) |
| Fixture Requirement | - | Full-cutoff, aimed within property |
| Measurement Method | - | Light meter at property line |
| Compliance Period | - | 15-30 days after notice |
| Enforcement | - | Complaint-based with inspections |
Highlighted rows indicate differences between cities.
Marana FAQ
What can I do about a neighbor's bright lights in Marana?
File a complaint with Marana Code Enforcement. Pima County dark-sky rules require all outdoor lights to be fully shielded and not trespass onto neighboring properties.
Do security lights have to be shielded in Marana?
Yes. All outdoor lighting, including motion-activated security lights, must be fully shielded and aimed to prevent light trespass under Pima County dark-sky standards.
Oro Valley FAQ
My neighbor's lights shine into my bedroom -- what can I do?
File a complaint with Oro Valley code enforcement. The Town enforces a 0.1 foot-candle limit at residential property lines. An inspector will measure light levels and require the neighbor to correct any violation within 15 to 30 days.
Do I need to worry about my porch light causing trespass?
Yes. All exterior fixtures, including porch lights, must be full-cutoff and aimed so light does not spill onto neighboring property. A shielded, downward-facing fixture at 3000K or lower will typically comply.
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