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.
LA County Code Title 22 Section 22.140.470 (Outdoor Lighting) requires outdoor light fixtures to be fully shielded (cutoff fixtures) to prevent direct glare onto adjacent properties or roadways. In residential zones, illumination at the property line is limited to 0.5 foot-candles. Up-lighting of facades, landscape, or signs is restricted. Decorative holiday lighting is generally exempt during the period from November 15 to January 15. The County does not have an Altadena-specific dark-sky overlay, but hillside management areas under Altadena CSD 22.306.060.B encourage low-reflectance surfaces and minimized exterior lighting.
Light-trespass complaints are handled by Code Enforcement — administrative citations under Ch. 1.25 ($100/$200/$500 escalating).
Altadena, CA
LA County allows backyard chickens in R-1 zones in unincorporated areas (including Altadena) subject to coop setbacks under LA County Code Title 10 and Title...
Altadena, CA
LA County Code Section 10.32.010 prohibits dogs running at large in any public place or private property other than the owner's, unless restrained by a chain...
Altadena, CA
Trimming protected oak trees (≥8 in DBH) requires an Oak Tree Permit if the work enters the protected zone or removes >25% of crown. Street trees in the publ...
Altadena, CA
In Altadena's Very High Fire Hazard Severity Zones, grass and weeds must be kept under 3 inches under LA County Fire Code Title 32 defensible-space rules.
Altadena, CA
LA County Fire's Brush Clearance program also functions as the weed-abatement ordinance — vacant and improved lots must keep weeds and grasses cut to under 3...
Altadena, CA
Outdoor watering in Altadena (served by Lincoln Avenue Water Co., Las Flores Water Co., Rubio Cañon, and Kinneloa Irrigation District) is limited to 2 days p...
Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle light trespass.
See how Altadena's light trespass rules stack up against other locations.
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