Lake County, CA Sign Regulations: Window Signs (2026)
Key Facts
- Permit
- None required
- Placement
- Interior window surface only
- Material
- Paper, cloth, or painted
- Purpose
- Must promote a particular sale
- Duration
- Short period only
- Coverage cap
- No percentage set
Summary
Temporary sale signs painted on or taped to the inside of a storefront window are a permitted special-purpose sign under Lake County Zoning Ordinance Section 21-45.3(r), exempt from the sign permits and area limits that apply to permanent signage in the county's commercial districts.
45.3 Special purpose signs - permitted: The following special purpose signs are permitted uses in all zoning districts, except as provided for in Section 45.23: ... (r) Temporary window signs painted directly onto the window or constructed of paper, cloth or similar expendable material that are affixed only to the interior window surface or painted onto the window surface for a short period of time to promote a particular sale of products or merchandise.
Official source re-checked September 8, 2026: the cited page had not changed since it was quoted.
Full Breakdown
3(r) exempts them from the sign-permit and area-limit system altogether by defining the exemption around material, placement and duration. To qualify, the sign must be painted directly onto the window glass or made of paper, cloth or similar expendable material, must be affixed only to the interior window surface (not free-standing or projecting), must be up for only a short period of time, and must promote a particular sale of products or merchandise rather than serve as permanent identification. 12 that apply to a business's permanent signage, such as the C1 district's cap of one-half square foot per foot of occupancy frontage or the 400-square-foot ceiling on total signage per occupancy in most commercial districts. 2(t), counting against the district's overall sign allowance. 3.
Violations & Fines
A window sign that outlasts the sale it promotes, is made of permanent materials, or is not confined to the interior glass surface forfeits the Section 21-45.3(r) exemption. The Community Development Department can then require the sign be counted against the district's sign-area limit under Section 45.11 or 45.12, obtain a standard sign permit, or remove it under Article 61 enforcement.
Frequently Asked Questions
Is there a percentage limit on how much of my storefront window I can cover with a sale sign in Lake County?
Do I need a sign permit for a 'Sale' sign taped inside my store window?
What happens if a window sign is left up permanently in Lake County?
Sources & Official References
Other rules in Lake County
California rules heatmap·Compare Lake County to another location·View the California sign regulations overview
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