Upland, CA Sign Regulations: Window Signs (2026)

150, 'Flags, Banners, Pennants, Balloons, Window and Interior Signs,' controls temporary and promotional window signage. Subsection (A) states the exterior use is generally prohibited: the use of flags, banners, pennants, balloons, and exterior window signs is prohibited except in connection with promotional sales sign programs of businesses which meet the chapter's requirements. Subsection (B) time-limits what is allowed: flags, banners, pennants, and exterior window signs are permitted for a maximum of eight weeks within each quarter. Subsection (C)(2) sets the coverage cap most businesses ask about: interior and window signs shall not obscure more than 50 percent of the total window area of any window visible from a public street, right-of-way, or parking lot.

100(M), covers non-promotional identification window signage under the chapter's list of special signs permitted without counting toward a lot's total allowable sign area: window signage, not exceeding 25 percent of any window, for the primary purpose of identification. Read together, a business can maintain ordinary identification window signage up to a quarter of any window at any time, but a larger promotional display, up to the 50 percent obscuring ceiling, is only allowed for up to eight weeks per quarter and only as part of a qualifying promotional sales sign program. 010 applies the whole sign chapter to any sign exposed to view from outside the confines of any building.