Berkeley, CA Sign Regulations: Window Signs (2026)
Key Facts
- Coverage cap
- 15% of window area or 300 sq ft, less of the two
- Temporary signs
- additional to other permitted signage
- Permanent signs
- counted as wall signs against total allowance
- Also enforced as
- unlawful window obstruction under § 20.16.040
- Penalty
- misdemeanor/infraction, Chapter 1.20
Summary
Berkeley caps window signs, whether permanent or temporary, at 15 percent of a building's window area or 300 square feet, whichever is smaller. Temporary window signs get to stack on top of a business's other permitted signage, but a permanent window sign counts against the building's regular wall-sign allowance instead.
20.16.160 Window signs. The sign area of window signs, permanent and temporary, shall not exceed fifteen (15) percent of the window area of the building premises or three hundred (300) square feet, whichever is less. Subject to the window area limitation herein specified, temporary window signs may be in addition to the signs otherwise permitted on the premises. For the purpose of determining allowable sign area on any premises, permanent window signs shall be treated as wall signs.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 8031-NS, passed July 28, 2026).
Full Breakdown
160 sets the window-sign rule inside Title 20's general sign regulations chapter. The 15-percent-or-300-square-foot ceiling, whichever is less, is measured against the window area of the building premises, not just a single storefront pane, so a business with several street-facing windows adds them together before checking the cap. 24's commercial district limits, while permanent window signs are folded into the wall-sign allowance and count against that total. 160, meaning a sign that exceeds the 15-percent or 300-square-foot threshold is treated as an unlawful obstruction as well as an oversized sign. 090, and the Building Official reviews compliance where a permit is required.
Violations & Fines
Exceeding the window-sign area limit is enforced the same way as any other Title 20 sign violation: a misdemeanor under § 20.68.020, punishable per Chapter 1.20, but chargeable as an infraction at the prosecutor's discretion. Section 20.68.030 makes any violation a public nuisance subject to abatement under Chapter 1.24 and allows the City to seek a Superior Court injunction requiring the excess signage to come down or be reduced to the lawful area.
Frequently Asked Questions
How much of my storefront window can I cover with signs in Berkeley?
Do temporary window signs count against my regular sign allowance?
Does a permanent window sign count toward my wall-sign limit?
Sources & Official References
Other rules in Berkeley
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