Decorative holiday and seasonal lighting is broadly exempt from Santa Clara County outdoor-lighting standards from November through early January. Permanent year-round string lighting still must meet shielding, color-temperature, and light-trespass rules under Title C zoning.
Santa Clara County Title C outdoor-lighting standards exempt temporary holiday and seasonal decorative lighting installed roughly between November 1 and January 15 each year. During that window, low-wattage string lights, animated displays, and inflatables are not subject to the County's color-temperature cap or full-cutoff shielding rules, even in hillside or rural-residential overlays. Lights left up longer than the seasonal window are reclassified as permanent fixtures and must meet the standard shielding, lumen, and color-temperature limits. Excessive brightness or animated displays that draw traffic and create safety hazards can still be abated as public nuisances under the County's general code-enforcement authority.
Permanent year-round string lighting that exceeds the brightness or shielding standards is treated as a Title C lighting violation. Traffic-attracting mega-displays may be abated as public nuisances with daily fines if they obstruct streets.
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See how Mountain View's holiday lighting rules rules stack up against other locations.
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