Dark Sky Rules: Los Angeles vs Pasadena
How do dark sky rules rules compare between Los Angeles, CA and Pasadena, CA?
Los Angeles and Pasadena have similar restriction levels.
Los Angeles, CA
Los Angeles County
Los Angeles Municipal Code §93.0108 caps new outdoor LED fixtures at 3000K, requires full shielding, and limits trespass to 0.5 foot-candles at residential property lines. The ordinance applies citywide to new installations, replacements, and permitted remodels but exempts pre-existing fixtures and emergency lighting.
View full Los Angeles rules →Pasadena, CA
Los Angeles County
Pasadena regulates outdoor lighting under PMC 17.40.080. Parking area lighting limited to 18 ft height and must be shielded to confine light to the parking area per PMC 17.46.220. No dedicated dark-sky ordinance, but light containment is required.
View full Pasadena rules →Key Facts Comparison
| Fact | Los Angeles | Pasadena |
|---|---|---|
| - | - | |
| Parking Lights | - | Max 18 ft height |
| Shielding | - | Required to confine light |
| Code Sections | - | PMC 17.40.080, 17.46.220 |
| Dark-Sky Ordinance | - | None specifically |
Highlighted rows indicate differences between cities.
Los Angeles FAQ
Do I need to replace my existing lights?
No. Pre-existing fixtures are grandfathered. Replacements, new permits, and tenant improvements that touch the electrical system must comply with §93.0108.
Are holiday lights exempt?
Yes. Temporary seasonal lighting is exempt November 15 to January 15 if pointed downward.
What color temperature is allowed?
New outdoor LEDs are capped at 3000K. Warm-white 2700K is recommended for hillside and residential areas.
Pasadena FAQ
What does fully shielded mean?
The fixture must direct all light downward with no light emitted above the horizontal plane. This prevents glare and sky glow while still providing ground illumination.
Can my neighbor's lights shine into my yard?
Most codes prohibit light trespass onto neighboring properties. Contact Pasadena code enforcement if outdoor lights from adjacent properties create a nuisance.
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