Folsom, CA Sign Regulations: Window Signs (2026)
Key Facts
- Coverage cap
- 25% of window area
- Applies to
- Commercial + incidental, temp + permanent
- Permit required
- No, within cap
- Allowance transfer
- Not allowed between windows
- Violation level
- Level B, $100-$2,500
Summary
Folsom caps window signage at twenty-five percent of a window's total area: all commercial and incidental signs in that window, temporary and permanent combined, count against the limit. A business can't borrow unused space from one window to cover more of another. Folsom Municipal Code Section 17.59.030(C)(21) sets the rule as part of the sign chapter's exempt-sign list, so a compliant window sign needs no separate sign permit.
21. Window signs; provided, that all such commercial and incidental signs (both temporary and permanent) do not exceed a combined maximum of 25 percent of the total window area for each window. Total signage placed on any window may not include unused signage amounts allowable for other windows;
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 1369, passed April 28, 2026).
Full Breakdown
The twenty-five percent cap applies per window, not per storefront, and covers both permanent decals and temporary posters or paper signs taped inside the glass. Because the rule treats every commercial or incidental sign in the window the same way, a retailer that fills one window with sale posters can't then claim leftover allowance to add more signage to a neighboring window. The provision sits among other exempt, no-permit signs in FMC 17.59.030(C), alongside items like under-canopy signs capped at four square feet and interior directory signs for enclosed lobbies, which are calculated separately from window coverage. A window sign that exceeds twenty-five percent loses its exemption and would need a variance from the planning commission on a finding of special circumstances, such as an unusual storefront shape, before it could be approved above the standard.
Violations & Fines
Exceeding the twenty-five percent window coverage limit is an administrative violation under FMC 17.59.070, classified Level B, carrying a monetary sanction of one hundred to twenty-five hundred dollars under FMC 1.09.012(A)(2); each oversized or noncompliant window counts as its own separate violation under FMC 17.59.060(C).
Frequently Asked Questions
How much of my storefront window can I cover with signs in Folsom?
Can I cover more of one Folsom window if another window has no signs?
Do I need a permit for window signs in Folsom if I stay under 25 percent?
Sources & Official References
Other rules in Folsom
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