Light Trespass: Altadena vs Los Angeles
How do light trespass rules compare between Altadena, CA and Los Angeles, CA?
Altadena and Los Angeles have similar restriction levels.
Altadena, CA
Los Angeles County
LA County Code Section 22.140.470 (Outdoor Lighting) requires all outdoor lighting to be shielded so that direct illumination does not cross the property line, with hard caps in residential zones.
View full Altadena rules →Los Angeles, CA
Los Angeles County
LAMC 93.0117 prohibits any stationary exterior light that causes neighboring residential windows, sliding glass doors, or elevated habitable areas to be illuminated by more than 2 footcandles or receive direct glare. Property owners must bring non-compliant lights into compliance upon written notice from LADBS. Holiday decorative lights (300 lumens or less per source) are exempt Nov 25-Jan 15.
View full Los Angeles rules →Key Facts Comparison
| Fact | Altadena | Los Angeles |
|---|---|---|
| Code Section | LA County 22.140.470 | - |
| Property Line Limit | 0.5 foot-candle (residential) | - |
| Fixture Type | Fully shielded / cutoff | - |
| Holiday Exemption | Nov 15 – Jan 15 | Nov 25-Jan 15, 300 lumens or less |
| Standard | - | Max 2 footcandles at neighbor property |
| Protected Areas | - | Windows, doors, balconies, decks |
| Enforcement | - | LADBS written notice to comply |
Highlighted rows indicate differences between cities.
Altadena FAQ
Can my neighbor's floodlight shine into my Altadena yard?
No — LA County Code 22.140.470 caps property-line illumination at 0.5 foot-candle and requires shielded fixtures. File a complaint with Code Enforcement.
Los Angeles FAQ
My neighbor's floodlight shines into my bedroom. What can I do?
File a light trespass complaint with Los Angeles code enforcement. Most codes require lights to be shielded and aimed so they don't illuminate neighboring properties.
Are holiday lights exempt from light trespass rules?
Temporary holiday displays are often exempt during the holiday season, typically November through January. However, they still cannot create a safety hazard.
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