Antioch, CA Sign Regulations: Window Signs (2026)
Key Facts
- Exempt window sign area
- Up to 4 sq ft (hours/ID)
- Over the limit
- Counted toward district sign cap
- Permit needed
- Yes, under Title 8, Ch. 6
- Enforcing department
- Development Services
- Violation penalty
- Misdemeanor, AMC 1-2.01 et seq.
Summary
Antioch lets stores post up to four square feet of window signage for hours and identification without it counting toward the district's overall sign-area cap. Go over four square feet and the whole window sign counts against that cap, and any sign still needs a Title 8, Chapter 6 permit under the Sign Code.
WINDOW SIGN. Any sign which is posted or painted on or otherwise affixed to a display window or any sign placed within four feet of a window and which is visible through a display window. Window signs of up to four square feet shall be allowed for store hours and identification purposes without deducting from the square footage allowed for the use by the provisions of this article. Any window sign in excess of four square feet shall be considered in the calculation to derive the overall square footage of signs.
Full Breakdown
505(B)(10) as any sign posted, painted on, or otherwise affixed to a display window, or placed within four feet of a window and visible through it. The code carves out a small exemption: window signs up to four square feet are allowed for store hours and identification purposes without being deducted from the square footage otherwise allowed for the use. 510). 514. 509(B)(1) otherwise bars flat signs, projecting signs, billboards, and bulletin boards, but specifically preserves the right to place signs inside windows denoting an approved use.
504, no sign regulated by the article may be placed or erected without first obtaining a permit under Title 8, Chapter 6 of the code and conforming to that chapter and Article 5.
Violations & Fines
Placing a sign, including a window sign requiring a permit, without first obtaining one under AMC 9-5.504 and Title 8, Chapter 6 is a misdemeanor under AMC 9-5.2904, punishable under AMC 1-2.01 et seq., and the unpermitted sign can be declared a public nuisance subject to City Attorney abatement action. A sign that no longer identifies the current occupant or products sold for six months is deemed a nuisance sign under AMC 9-5.507 and must be removed within 30 days of written notice from the Department of Development Services.
Frequently Asked Questions
Can I put any sign in my Antioch storefront window without a permit?
Does the four-square-foot window sign exemption apply everywhere in Antioch?
What happens if my Antioch business exceeds the four-square-foot window sign allowance?
Sources & Official References
Other rules in Antioch
California rules heatmap·Compare Antioch to another location·View the California sign regulations overview
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How other cities in Contra Costa County handle window signs.