Outdoor Lighting in Alameda County, CA (2026)

1 county-level rule, plus city-specific rules for 5 cities in Alameda County, California.

Verified from official government sources

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

Light Trespass & Shielding

Alameda County treats light trespass onto neighbors as nuisance under Title 17 and Civil Code 3479. Residential fixtures cannot exceed 0.5 foot-candles at adjacent property lines.

Light Trespass Rules in Alameda County

Some Restrictions

California Civil Code § 3479

Anything which is injurious to health, including, but not limited to, the illegal sale of controlled substances, or is indecent or offensive to the senses, or an obstruction to the free use of property, so as to interfere with the comfortable enjoyment of life or property, or unlawfully obstructs the free passage or use, in the customary manner, of any navigable lake, or river, bay, stream, can...

Full ordinance details →Official source ↗

Outdoor Lighting by City in Alameda County

5 cities in Alameda County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.

OaklandPop. 433,031

1 verified rule • Light Trespass & Shielding

FremontPop. 230,504

2 verified rules • Dark Sky Rules, Light Trespass & Shielding

HaywardPop. 162,954

1 verified rule • Light Trespass & Shielding

BerkeleyPop. 124,321

2 verified rules • Dark Sky Rules, Light Trespass & Shielding

San LeandroPop. 91,799

1 verified rule • Light Trespass & Shielding

All Alameda County ordinances

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