Outdoor Lighting in Mono County, CA (2026)

2 rules for unincorporated Mono County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Mono County. If you live within an incorporated city, that city's own rules apply — see the city list below.

Dark Sky Rules

Unincorporated Mono County enforces Dark Sky Regulations in General Plan Chapter 23 to protect the Eastern Sierra night sky. New outdoor lighting must use full-cutoff, fully shielded, downcast fixtures (Sec. 23.050). Mercury-vapor, low-pressure sodium, unshielded floodlights, and blinking/searchlight fixtures are prohibited (Sec. 23.070).

Mono County Dark Sky Outdoor Lighting Rules

Heavy Restrictions

Full ordinance details →Official source ↗

Light Trespass

Unincorporated Mono County prohibits light trespass under General Plan Chapter 23. Section 23.070(2) bars any outdoor lighting fixture from being installed, aimed, or directed to produce light that spills over into neighboring properties or the public right-of-way, and Section 23.050 requires fully shielded, downcast fixtures.

Mono County Light Trespass Rules

Heavy Restrictions

Full ordinance details →Official source ↗

All Mono County ordinances

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Mono County Ordinance Hub →