Union City, CA Outdoor Lighting: Billboard Lighting (2026)
Key Facts
- Billboards
- Banned citywide
- Applies to
- Lit or unlit structures
- Exceptions
- Only signs allowed under §18.30.040/.060
- Enforcement
- Removal as prohibited sign
Summary
Union City bans billboards and other off-premises advertising signs outright under § 18.30.050(H), so no illuminated billboard structure, lit or unlit, may legally go up anywhere within city limits.
Unless otherwise expressly permitted elsewhere in this chapter, the following signs are prohibited in any zoning district: ... H. Billboards and off-premises signs, except signs specifically allowed pursuant to Section 18.30.040 or 18.30.060, or freestanding signs which identify a use or occupant of a parcel within the City without street frontage;
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4940544; v16 updated 2026-06-23).
Full Breakdown
Chapter 18.30's prohibited-signs list bars billboards and off-premises signs citywide under Union City Municipal Code § 18.30.050(H), with narrow carve-outs only for signs specifically allowed under § 18.30.040 or § 18.30.060, or on-site freestanding signs identifying a use without street frontage. Because the structure itself is unlawful, the city has no separate lighting standard for billboards: there's nothing lawful to illuminate. Any sign that is hazardously bright or glaring is independently banned under § 18.30.050(F), and allowed signs must meet the general lighting-intensity and shielding standards of § 18.30.070(F)-(G), but a billboard never reaches that stage because it's prohibited from existing in the first place.
Violations & Fines
Erecting a billboard, illuminated or not, violates § 18.30.050(H) as a prohibited sign; the city can order removal and pursue code enforcement against the property owner or advertiser.
Frequently Asked Questions
Can I put up an illuminated billboard in Union City?
Is there a separate lighting rule just for billboards?
Sources & Official References
Other rules in Union City
California rules heatmap·Compare Union City to another location·View the California outdoor lighting overview
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