Lancaster, CA Sign Regulations: Window Signs (2026)

160 governs business signs in the C zone and its subsection D is devoted specifically to window signs: each business establishment may display window signs, but the total sign coverage is capped at 25% of the window area, measured against the glass area of the window on which the signs are placed, not the whole storefront. The section allows the signs to be lit either internally or externally, but explicitly bars any continuous or sequential flashing operation, matching the flashing prohibition applied to other commercial sign types in the C zone.

D carries no such time limit, so a business can maintain window signage indefinitely as long as it stays within the 25% coverage cap and lighting rule. 140 still governs the property as a whole. A sign exceeding the 25% coverage threshold, or one that flashes or sequences its lighting, does not qualify for the window sign allowance and is treated as a nonconforming or prohibited sign under the C zone's general sign regulations.