Lake County, CA Outdoor Lighting: Light Trespass & Shielding (2026)
Key Facts
- Core Rule
- No unobstructed beam past lot line (Sec. 41.8)
- Fixture Standard
- Hooded, shielded, or opaque
- Sign Lighting
- Shielded to prevent glare (Sec. 45.26(b))
- Numeric Limit
- None set; shielding-based standard
- Enforcement
- Lake County Code Enforcement
Summary
In unincorporated Lake County, Section 41.8 of the Zoning Ordinance prohibits any unobstructed beam of light from being directed beyond a property's exterior lot line and requires all exterior lighting to be hooded, shielded, or opaque. For signs, Section 45.26(b) separately requires lighting to be shielded so it does not cast glare onto neighboring properties or public streets.
All exterior lighting accessory to any use shall be hooded, shielded or opaque. No unobstructed beam of light shall be directed beyond any exterior lot line.
Full Breakdown
Light trespass, light spilling from one property onto a neighbor's, is directly addressed by the General Performance Standards in Article 41. 8(a) (Glare and heat) provides that 'All exterior lighting accessory to any use shall be hooded, shielded or opaque' and that 'No unobstructed beam of light shall be directed beyond any exterior lot line,' exempting only buildings and structures under construction. This is the County's principal light-trespass control and applies to residential, commercial, and other uses across all zoning districts. 26(b)), and that sign lighting must not endanger public safety by distracting motorists.
The County does not adopt a numeric illuminance (foot-candle) threshold at the property line; compliance is judged by whether lighting is properly shielded and whether an unobstructed beam crosses the lot line. 8 standard. In scenic areas, the Article 34 Scenic Combining District further limits illuminated signage to reduce night-time light intrusion on protected views.
Violations & Fines
An exterior fixture that is not hooded, shielded, or opaque and that casts an unobstructed beam across a property line violates Section 41.8. A lighted sign that throws glare onto a neighbor or a street violates Section 45.26(b). Lake County Code Enforcement may order the fixture shielded, redirected, or replaced.
Frequently Asked Questions
What can I do about a neighbor's light shining onto my property in Lake County?
Is there a brightness limit measured in foot-candles?
Do the rules cover illuminated signs?
Sources & Official References
Other rules in Lake County
California rules heatmap·Compare Lake County to another location·View the California outdoor lighting overview
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