Alhambra, CA Outdoor Lighting: Light Trespass & Shielding (2026)

090 governs exterior lighting on new development and on alterations that replace light fixtures or systems. 3 foot-candles. The same subsection requires every fixture to meet the Illuminating Engineering Society of North America's cut off or full cut off criteria, and building-mounted fixtures must attach only to walls or eaves without projecting above the roofline. 090(B) backs the trespass limit with outright bans on searchlights used for advertising, mercury vapor lamps, and any laser or light that flashes, blinks, alternates, or moves. Light standards are capped at 20 feet under (D), though the Planning Commission may approve extra height for security, historic accentuation, or signage and landscape lighting.

5 foot-candles, both under (C). Non-residential lighting must run on a timer or photo-sensor and shut off during daylight and when the building is unoccupied and security lighting isn't needed, per (E)(3). Public street lighting, public-school athletic field lights, public-facility security lighting, and temporary construction or emergency lighting are all exempt from the section under (A)(1).