Butte County — Signage

Last reviewed: July 6, 2026

Overview

In unincorporated areas of Butte County, signs are regulated by the Butte County Zoning Ordinance, Chapter 24 — Article 20 (Signs). The rules set what types of signs are allowed, how big and tall they can be, where they can go, when a permit is needed, and what’s prohibited. Standards vary by zone category (residential, commercial/mixed use/public, industrial/airport, agriculture/natural resource), with additional rules for digital and freeway-oriented signs.

Plain-English anchor: If your sign is not listed as “allowed without a permit” in § 24-101, you’ll generally need an Administrative Permit under § 24-102 before you install it.

What this page covers

• Article 20 (Signs) purpose, applicability, definitions, and measurement; general and prohibited standards; permit triggers; temporary signs; zone-by-zone allowances; freeway and digital sign rules; and how nonconforming signs are handled.

Use this with the broader Butte County Zoning and Development Standards pages, and where applicable consider project-level Design Review, Overlay Districts (e.g., Airport), Historic Preservation for historic signage, Parking for on-site directional signs, and Variances and Exceptions if relief from sign standards is needed.

Controlling article, applicability, and definitions

• Purpose and scope: Article 20 sets the County’s sign rules to support business visibility while preserving rural and scenic qualities and traffic safety; rules apply across all zones in unincorporated areas. See § 24-98 and § 24-99.
• Key definitions: The County defines common types such as Freestanding, Monument, Projecting, Wall, Window, Off-site (billboard), Digital, and Freeway signs in § 24-100. Refer to these terms first when classifying a proposal.

General standards that apply in every zone

• Measurement: Sign area is measured to the smallest rectangle/circle around copy and background color; double-faced signs count once; 3D signs use projected area. See § 24-104.A.
• Illumination: Internal or external lighting is allowed; residential-zone illumination must also meet the County’s outdoor lighting rules; “halo” letter lighting is allowed. See § 24-104.C.
• Setbacks/sight safety: Freestanding/monument/freeway/off-site signs >42 in. must be at least 15 ft from any parcel line abutting a residential zone, and 14 ft from any intersection/driveway/alley, unless a civil engineer certifies adequate sight distance. No sign in a road right-of-way. See § 24-104.D.
• Removal: Signs for businesses that cease operation for two years, or broken/abandoned signs without an approved plan, must be removed. § 24-104.E.
• Content neutrality and traffic safety are expressly required. § 24-104.F–G.
• Prohibited signs include: signs above a roofline, signs with flashing/moving elements (excluding approved digital/time-temperature/community-ID), signs in the right-of-way, signs attached to trees, and any sign obstructing doors/windows/egress or traffic visibility. See § 24-103.

Signs allowed without permits

Highlights include: one sign up to 8 sq ft; on-site directional/informational signs up to 5 sq ft; certain flags on poles ≤25 ft; one 32 sq ft construction sign; one 16 sq ft professional nameplate; interior signs not visible from the street; non-advertising murals; seasonal decorations; and changes to sign faces that don’t change size/structure. See § 24-101.A–B.

Permit triggers and special approvals

• Most other signs require an Administrative Permit by the Zoning Administrator. § 24-102.A.
• If a commercial/mixed-use/industrial site abuts a residential zone, any freestanding, freeway, or off-site sign requires a Conditional Use Permit. § 24-102.C.
• Off-site digital signs require a Minor Use Permit. § 24-102.D.
• Freeway signs in the AG zone require a Minor Use Permit. § 24-102.E.
• Applications must include site plans, scaled drawings/materials, and a full on-site sign inventory. § 24-102.B.

Temporary signs (no Administrative Permit required)

• On-site real estate: 1 sign up to 6 sq ft/6 ft high for residential; non-residential: 1 sign up to 32 sq ft/6 ft high per frontage; remove within 7 days after listing ends. § 24-108.A.
• Off-site real estate: A-frame “open house” up to 6 sq ft/3 ft high, ≤48 hours; fixed off-site subdivision/development signs up to 32 sq ft/6 ft high, up to 2 total, for ≤2 years or while activity continues. § 24-108.B.
• Political: install ≤90 days before, remove within 7 days after election; not in public right-of-way. § 24-108.C.
• Special events in nonresidential zones: 1 sign per frontage up to 24 sq ft/12 ft high, ≤14 consecutive days, no more than once per quarter. § 24-108.D.
• Temporary business ID for new businesses: 1 sign per frontage up to 24 sq ft/12 ft high, ≤90 consecutive days. § 24-108.E.

Zone-by-zone signage allowances (unincorporated areas)

Residential Zones

• Purpose/context: Low-intensity identification tied to residences and multi-family entries.
• Key allowances:
  • One wall or window sign for a legal home occupation. § 24-105.A.1.
  • Multi-family (≥4 units): one entrance/freestanding sign up to 10 sq ft, plus one window/awning/canopy sign up to 5 sq ft. § 24-105.A.2.
  • Subdivisions (≥15 units): up to two monument/freestanding signs at each entrance, each 18 sq ft max and 6 ft high; with private ownership and recorded maintenance. § 24-105.A.3.

Commercial, Mixed Use, and Public Zones

• Purpose/context: Business visibility and pedestrian orientation in commercial/mixed corridors and civic areas; coordinated with Design Review when applicable.
• Allowed sign types/limits (Table 24-105-1 highlights):
  • Awning: 50% of awning area or 25 sq ft (lesser).
  • Freestanding (incl. digital): 1 per 300 linear ft of building frontage, no more than 2 per frontage and 3 per site; 64 sq ft area; 12 ft high.
  • Monument (incl. digital): 32 sq ft; 6 ft high.
  • Off-site/off-site digital: 1; 672 sq ft; 55 ft high; spacing: 500 ft on four-lane roads, 300 ft on two-lane; allowed in the General Commercial district only; prohibited in Mixed Use zones.
  • Freeway: 1 per parcel; 100 sq ft per face (200 sq ft total); 40 ft high.
  • Projecting: 0.5 sq ft/ft of building frontage; cannot exceed eave/top of facade.
  • Wall: 0.75 sq ft/ft of building frontage.
  • Window: max 25% of the window area. See § 24-105.B/Table 24-105-1 and § 24-106.D.

Industrial Zones and the Airport (AIR) Zone

• Purpose/context: Larger-format identification and logistics visibility in industrial districts and the AIR special-purpose zone.
• Allowed sign types/limits (Table 24-105-2 highlights):
  • Awning: up to 50% of awning area or 25 sq ft.
  • Freestanding (incl. digital): as in commercial (number/area/height same).
  • Monument (incl. digital): up to 48 sq ft; 6 ft high.
  • Off-site/off-site digital: 1; 672 sq ft; 55 ft high; spacing 500 ft/300 ft on four-/two-lane roads; permitted in industrial zoning districts; in AIR, digital freestanding/monument require a Minor Use Permit.
  • Freeway, projecting, wall, window: same measurement basics as commercial (see table). See § 24-105.C/Table 24-105-2 and notes.

Agriculture (AG) and Natural Resource Zones

• Purpose/context: Low-intensity, rural-scaled identification with agritourism options and community wayfinding.
• Allowed sign types/limits (Table 24-105-3 highlights):
  • Freestanding/Monument/Projecting/Wall/Window: rural-scaled; e.g., typical freestanding sign 32 sq ft and 6 ft high.
  • Farm trail signs: 6 sq ft, 6 ft high; Farm signs: 32 sq ft, 6 ft high.
  • Community identification: 300 sq ft, 20 ft high.
  • Freeway: 1 per parcel; 100/200 sq ft; 20 ft high; only in the AG zone.
  • Parcel-wide cap: total sign area = 1 sq ft/linear ft of building frontage, up to 200 sq ft. See § 24-105.D/Table 24-105-3.

Planned Development (PD) and Research Business Park (RBP)

• Purpose/context: Coordinated multi-tenant campuses. A Master Sign Program is required and may supersede default standards. It can vary sign height, number, area, and types if the overall design is superior; approval is by Administrative Permit. See § 24-105.E and § 24-107.

Special rules for certain sign types

• Freeway signs: Must be on the same parcel as the business, within 800 ft of the centerline of SR 99 or SR 70, and for gas/food/lodging primarily serving freeway motorists. § 24-106.A.
• Projecting/awning signs over sidewalks: Provide 8 ft ground clearance; may extend up to 5 ft into the public right-of-way with at least 2 ft curb clearance. § 24-106.B–C.
• Digital sign operations (off-site, freestanding, monument): Still images only with a minimum 8-second dwell; no motion/flash; must auto-dim and use a photocell; max brightness 0.3 footcandles over ambient at 250 ft, and 0.1 footcandles over ambient adjacent to residential zones. § 24-106.E.
• Window coverage: ≤25% of the window area (frame-to-frame). § 24-106.D.

Nonconforming signs

Existing legal signs that no longer meet current rules are “legal nonconforming”; if abandoned or the advertised use ceases for 180 days, the sign must be removed or brought into conformity. Rebuilding a demolished legal nonconforming sign must start within 1 year and finish within 3 years; conversions of nonconforming standard off-site billboards to off-site digital may be allowed with a Minor Use Permit; designated historic resource signs have tailored exceptions. See § 24-109 and also see Butte County Nonconforming Uses.

Quick reference: core allowances by zone

Practical tips

• Coordinate early if your site abuts homes: freestanding/freeway/off-site signs escalate to a CUP near residential zones. § 24-102.C.
• For multi-tenant centers or PD/RBP sites, expect a Master Sign Program; it can adjust height/area/number if the design is stronger overall. § 24-107.E–F.
• Check setbacks and sight triangles with Public Works; the County requires sight-distance protection even when signs meet size/height limits. § 24-104.D–G.
• Integrate sign lighting with outdoor lighting rules in residential contexts; consider Landscaping and Screening near ground signs to avoid blocking visibility. § 24-104.C.
• Structural/ electrical safety is governed separately by the California Building Standards Code. Zoning approval does not substitute for building/electrical permits. Verify with the jurisdiction.

Checklist

• Identify your zone category (Residential; Commercial/Mixed Use/Public; Industrial/AIR; AG/Natural Resource) in unincorporated Butte County.
• Classify your sign type using § 24-100 definitions.
• Confirm if your sign is allowed without a permit under § 24-101; if not, prepare an Administrative Permit application per § 24-102.B.
• Apply zone-specific size/height/number limits in § 24-105 (Tables 24-105-1/2/3).
• Check general standards (measurement, illumination, setbacks, removal, sight safety) in § 24-104.
• If digital: meet dwell time and brightness limits in § 24-106.E.
• If near homes: determine if a CUP is required under § 24-102.C.
• If in PD/RBP or a large multi-tenant site: prepare a Master Sign Program under § 24-107.
• Verify no prohibited elements in § 24-103.

Risks & Ambiguities

Plain-English Summary

If you’re in unincorporated Butte County, start by matching your sign to the zone and sign type. Many small identification and temporary signs are allowed without permits; most others need an Administrative Permit, and bigger or more sensitive locations may trigger a CUP or Minor Use Permit. Stick to the size/height/number limits for your zone, keep window signs to 25%, meet clearance/sight-distance rules, and if your sign is digital, comply with the 8‑second still-image cycle and brightness caps.

Source References

• Butte County Zoning Ordinance, Chapter 24 — Article 20 (Signs): Purpose/Applicability/Definitions/General Standards/Prohibited/Permit Requirements/Types Allowed by Zone/Standards for Specific Signs/Master Sign Program/Temporary Signs/Nonconforming: § 24-98–§ 24-109.
• Chapter context (print export): Butte County Code, Chapter 24 — Zoning.

Retrieved passages

• Butte County Zoning Code (Section 24-106.D) High relevance show source text
• Butte County Zoning Code (Section 24-108) High relevance show source text
• Butte County Zoning Code (Section 24-106.D) Medium relevance show source text
• Butte County Zoning Code (§ 1) Medium relevance show source text
• Butte County Zoning Code (§ 1) Medium relevance show source text
• Butte County Zoning Code (§ 1) Medium relevance show source text
• Butte County Zoning Code (Section 24-106.D) Medium relevance show source text
• Butte County Zoning Code (Article 29) Medium relevance show source text
• Butte County Zoning Code (§ 1) High relevance show source text
• Butte County Zoning Code (§ 1) High relevance show source text
• Butte County Zoning Code (article relating) High relevance show source text
• Butte County Zoning Code (§ 1) Medium relevance show source text
• Butte County Zoning Code (Section 24-106.D) Medium relevance show source text
• Butte County Zoning Code (§ 1) High relevance show source text

Cited sections

• Butte County Zoning Ordinance, Chapter 24 — Article 20 (Signs): Purpose/Applicability/Definitions/General Standards/Prohibited/Permit Requirements/Types Allowed by Zone/Standards for Specific Signs/Master Sign Program/Temporary Signs/Nonconforming: **§ 24-98–§ 24-109**. (Chapter 24)
• Chapter context (print export): Butte County Code, Chapter 24 — Zoning. (Chapter context)
• ButteCounty_ZoningCode.md

• Official Butte County code library