Redwood City, CA Sign Regulations: Window Signs (2026)

124. On the ground floor, no more than twenty-five percent of the window area on each building facade may be covered by signs, and that coverage calculation is not limited to signs stuck directly to the glass: any sign within three feet of a window or glass door, plus any internally illuminated sign within ten feet of a window or glass door that is visible from outside, counts toward the twenty-five percent cap. A nonresidential establishment on the second floor gets a smaller allowance, up to ten percent of the second-floor window area per facade, and any nonresidential establishment located above the second floor may not display window signage at all.

60's definitions distinguish a "temporary window sign," on display for no more than ninety consecutive days per year, from a "permanent window sign," intended for display beyond ninety days; both must sit on or within three interior feet of a window or glass door to count as window signage at all. Merchandise displayed for immediate sale in a window is expressly carved out of the "permanent window sign" definition, so a storefront can display actual product without that display counting against the twenty-five percent coverage limit.