Santa Clara County, CA Sign Regulations: Digital Billboards (2026)
Key Facts
- Billboard permit
- Discretionary Use Permit required
- Illumination
- Continuous, non-blinking only
- Animated/electronic copy
- Meets code's barred definition
- Applies to
- Unincorporated county only
Summary
Unincorporated Santa Clara County requires a discretionary Use Permit for any billboard and limits sign illumination to continuous, non-blinking light, effectively barring changeable digital displays.
A.Continuous lighting. Unless otherwise expressly provided in this section, signs may be illuminated only with continuous (non-blinking) lighting.B.Allowed lighting. Except as provided for fin signs in Section 4.40.050(F), signs may be illuminated only with:1.Neon tube lighting, if fully contained within a cabinet covered with a clear glass or plastic face, or if comprised of individual pan channel letters covered with a clear glass or plastic face;2.External lighting;3.Internal lighting; or4.Halolighting.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).
Full Breakdown
Billboards (off-site advertising signs) are classified as a Use Permit use in the county's commercial and industrial districts under Table 2.40-1 of the Zoning Ordinance, meaning none may be built by right. Separately, § 4.40.040 limits all sign illumination to continuous, non-blinking light, aside from a narrow fin-sign lighting exception, and the code's own definition of an "animated sign" covers displays with electronic energy-driven changeable copy or flashing color changes. Together these provisions block the kind of scrolling or color-changing digital billboard message common in cities, even where a billboard itself could get a Use Permit.
Violations & Fines
Erecting a billboard without a Use Permit, or operating a blinking/animated display in violation of § 4.40.040, exposes the sign owner to code enforcement action and removal; general Ordinance Code violations are misdemeanors punishable by up to $1,000 per day under Sec. A1-28.
Frequently Asked Questions
Can a digital billboard with scrolling ads go up in unincorporated Santa Clara County?
Does a Use Permit guarantee billboard approval?
Sources & Official References
Other rules in Santa Clara County
California rules heatmap·Compare Santa Clara County to another location·View the California sign regulations overview
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