Petaluma, CA Sign Regulations: Window Signs (2026)
Key Facts
- Permit required in C/MU/BP/I Districts
- No, exempt under §20.110(B)(9)
- Exemption applies in AG/R/OSP/Civic
- No equivalent exemption exists
- Definition covers
- Decals, stickers, neon tubing, painted glass
- Still barred from
- Creating a traffic hazard (§20.190)
Summary
Petaluma exempts window signs from its sign permit requirement entirely, but only in Commercial, Mixed Use, Business Park and Industrial Districts; window signs still count toward the property's overall permitted sign area and must not create a traffic hazard or unsafe condition.
FF. Window sign. Any sign placed on, or inside an exterior window. This shall include but not be limited to: decals, stickers, readerboards, neon tubing signs, signs painted directly on the glass surface, and signs made of wood, plastic, metal, composite materials, paper, or cardboard. ... ... B. Exempted signs. ... The following signs do not require a sign permit: ... ... 9. Window signs in business establishments, located in C (Commercial), Mixed Use, (MU), Business Park (BP), and I (Industrial) Districts.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 2931 NCS, passed July 6, 2026).
Full Breakdown
020(FF) as any sign placed on or inside an exterior window, expressly including decals, stickers, readerboards, neon tubing signs, signs painted directly on the glass, and signs made of wood, plastic, metal, composite materials, paper, or cardboard. 110 lists the signs exempted from Petaluma's sign permit requirement, and Subsection B(9) states plainly that window signs in business establishments located in the C (Commercial), MU (Mixed Use), BP (Business Park) and I (Industrial) Districts do not require a sign permit at all, unlike most other sign types in the chapter which carry specific area or height caps.
040 governing those districts contains no equivalent window sign exemption or allowance. 030(B) bars any sign from being erected in a manner that could interfere with, obstruct, confuse, or mislead traffic or create a safety hazard. 050(B) for that district, since those overall caps still apply to the property even though the window signs themselves are permit-exempt.
Violations & Fines
A window sign that creates a traffic hazard or safety hazard violates IZO Section 20.030(B) and Section 20.190 regardless of its permit-exempt status, and the Zoning Administrator may order it altered or removed. A business posting window signs outside the C, MU, BP or I Districts without a permit, where no exemption applies, is subject to the general enforcement and nuisance-abatement provisions of Section 26.020.
Frequently Asked Questions
Do I need a permit to put signs in my store window in Petaluma?
What counts as a window sign under Petaluma's ordinance?
Can I put unlimited signage in my windows since no permit is needed?
Sources & Official References
Other rules in Petaluma
California rules heatmap·Compare Petaluma to another location·View the California sign regulations overview
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