Campbell — Signage

Last reviewed: July 1, 2026

Overview

Campbell regulates signs through Chapter 21.30 of the Campbell Zoning Code (Title 21). The sign rules control size, height, location, illumination, temporary durations, and master sign plans to protect public safety and visual character while allowing business identification and noncommercial speech (§ 21.30.010).

This page summarizes the code language and provides a district-by-district breakdown of the sign rules that actually apply across Campbell’s zoning map. Where the code assigns district-specific sign rules (notably CB‑MU), those rules are called out; otherwise commercial/office/industrial and residential rules in Chapter 21.30 apply. Verify parcel-specific questions with the Community Development Department.

(Quick navigation: this topic overlaps with Campbell Zoning & planning overview, the Zoning chapter, Development Standards, Parking, Design Review, Overlay Districts, and Historic Preservation. For building-code accessibility items (tactile signs, etc.) consult the California Building Standards Code.)

Key city-wide rules (short list, code grounding)

• Chapter purpose and applicability: Chapter 21.30 regulates height, size, location, duration, and design of signs and applies citywide (with district exceptions) (§ 21.30.010).
• Permanent commercial/office/industrial sign caps: wall and freestanding signs generally allowed at one square foot of sign area per linear foot of business frontage, with a minimum of 20 sq ft and no single sign over 50 sq ft; freestanding sign height maximum 14 ft (general districts) (§ 21.30.080(A)).
• Office-specific cap: total for office parcels is no more than 80 sq ft and no single sign greater than 40 sq ft (§ 21.30.080(B)(1)).
• CB‑MU (Central Business Mixed‑Use downtown) uses special rules: each business is allowed 1 sq ft of sign area per linear foot of frontage, minimum 20 sq ft, maximum 40 sq ft; awnings and projecting signs have distinct limits and materials rules (plastic signs disallowed) (§ 21.30.080(H); § 21.11.050).
• Projecting sign clearance and over‑right‑of‑way limits: projecting signs generally cannot extend more than 2 ft over public right‑of‑way in non‑CB‑MU districts and must provide minimum 10 ft clearance; CB‑MU awnings/projecting signs have 8 ft required clearance and different projection allowances on Campbell Avenue (up to 5 ft) (§ 21.30.080(A)(4); § 21.30.080(H)(5–6)).
• Illumination: permitted but limited—illumination must be interior or by concealed reflectors and must not create glare; CB‑MU restricts internally-lit plastic signs and encourages traditional materials (wood, painted metal, fabric) (§ 21.30.080(A)(5); § 21.30.080(H)(3); other CB‑MU details).
• Temporary, real estate, and noncommercial signs: temporary on‑site real estate signs in residential districts are allowed up to 12 sq ft (one sign per street frontage); temporary noncommercial (e.g., political) signs allowed up to 12 sq ft and for limited durations (§ 21.30.090(H), (J)).
• Master sign plan: required for new nonresidential projects with four or more tenants, major rehab over 50%, or for applications seeking extra signs, greater area, or special sign types; master sign plan approvals have specific required design elements (§ 21.30.030(H)).
• Noncommercial message substitution: anywhere the chapter permits commercial signage, a noncommercial ideological or political message is permitted under the same conditions (§ 21.30.090).
• Nonconforming signs and repairs: lawful existing signs that are nonconforming may remain until a sign change that requires a permit; limited copy changes are allowed without making the whole sign conform (§ 21.30.100).
• Enforcement, maintenance, and abatement procedures are set out (maintenance required; temporary signs removed as nuisance; removal and lien procedures) (§ 21.30.110–120).

District-by-district breakdown

Note: Campbell uses multiple base zoning districts (see Table 2‑1). The sign chapter applies citywide, but some districts have tailored sign rules. Each district below lists how the Chapter 21.30 rules apply, the district purpose (from Title 21), typical uses, and the sign standards that most affect applicants.

CB‑MU — Central Business Mixed‑Use

• Purpose / typical uses: downtown core (Campbell Avenue and Winchester/E. Campbell plan areas) focused on ground‑floor retail and upper‑floor office/residential (Table 2‑1; § 21.11.050).
• Sign rules that apply: CB‑MU has its own sign subsection that supersedes general commercial rules. Each business may have 1 sq ft of sign area per linear foot of business frontage with a minimum of 20 sq ft and a maximum of 40 sq ft; awnings may substitute for wall signs; projecting signs up to 6 sq ft (non‑illuminated, double‑sided) and may project up to 4 ft over the right‑of‑way (with 8 ft clearance), except Campbell Avenue awnings may project 5 ft with 8 ft clearance. Materials rules favor wood, painted metal, cast metal, painted fabric; plastic signs are not allowed (§ 21.30.080(H)).
• Where it applies: downtown CB‑MU mapped areas; consult the zoning map at the Community Development Department (§ 21.11.050).

General Commercial — GC (and mixed‑use commercial variants GC‑MU, CC‑MU, etc.)

• Purpose / typical uses: retail, restaurants, services and mixed commercial/residential projects (Table 2‑1).
• Sign rules that apply: fall under the Chapter 21.30 commercial/office/industrial rules: wall and freestanding signs sized at 1 sq ft per linear foot of business frontage (min 20 sq ft, max 50 sq ft for a single sign); freestanding max height 14 ft unless a master sign plan or other permit allows more (§ 21.30.080(A)).

Neighborhood Commercial — NC

• Purpose / typical uses: small‑scale neighborhood retail and services (Table 2‑1).
• Sign rules: same base commercial rules in Chapter 21.30; freestanding signs limited to one per parcel/center and subject to the same area and height caps (§ 21.30.080(A)).

Professional Office — PO

• Purpose / typical uses: offices and professional services (Table 2‑1).
• Sign rules: office‑specific caps apply: total display area for a parcel or center no greater than 80 sq ft, and no single office sign greater than 40 sq ft; freestanding and wall signs allowed per § 21.30.080(B).

Research & Development / Light Industrial — RD, LI

• Purpose / typical uses: research, light manufacturing, industrial services (Table 2‑1).
• Sign rules: governed by the Chapter 21.30 commercial/industrial subsection; freestanding and wall sign allowances track business frontage rules and the general height/area limits in § 21.30.080(A).

Residential districts — R‑1‑6, R‑1‑8, R‑1‑10, LMDR, MDR, etc.

• Purpose / typical uses: single‑family and multi‑family residential (see Table 2‑1).
• Sign rules: Chapter 21.30 applies citywide; residential parcels generally are not commercial sign locations but may have limited temporary and real‑estate signs. Real‑estate signs in residential zoning districts: temporary on‑site signs not exceeding 12 sq ft aggregate, one sign per street frontage; open house signs allowed subject to daily removal limits (§ 21.30.090(H)). Temporary noncommercial/political signs: max 12 sq ft, removed within prescribed timeframes (e.g., political signs posted no more than 75 days, removed 15 days after event) (§ 21.30.090(J)).

Special-purpose and overlays (Historic, O, BRH, etc.)

• Purpose / typical uses: additional area‑specific standards layered over base districts (Chapter 21.14 and Table 2‑1). Overlay rules may modify signage where the overlay requires special architectural or historic treatment (§ 21.14.010; § 21.04.020 table referencing overlays).
• Sign rules: where the overlay (e.g., H Historic Preservation) applies, verify whether the overlay requires submittal to the Historic Preservation Board or additional design review; CB‑MU historic properties have additional coordination with historic preservation chapters (Verify with the jurisdiction). Not all overlay sign rules are spelled out in Chapter 21.30; check the overlay chapter and Historic Preservation chapter for restrictions. Verify with the jurisdiction.

Most decision-relevant standards (quick table)

Checklist (what an applicant must satisfy before a sign permit / zoning clearance)

• Confirm the zoning district for the parcel and whether any overlay (e.g., H Historic) applies; if in CB‑MU use CB‑MU sign rules (Verify with the zoning map) (§ 21.11.050; § 21.04.020).
• Calculate allowed sign area using the district rule (commercial formula 1 sq ft per linear foot or CB‑MU caps; offices: total ≤ 80 sq ft, single ≤ 40 sq ft) (§ 21.30.080(A); § 21.30.080(B)).
• Check freestanding sign height (normally ≤ 14 ft) and placement relative to right‑of‑way; confirm projecting sign clearance (10 ft typical, 8 ft in CB‑MU) (§ 21.30.080(A)(3–4); § 21.30.080(H)(5–6)).
• If the site has 4+ tenants, or you're requesting extra area/height/off‑site/readerboard/freeway‑oriented signs, prepare a Master Sign Plan and expect review by the Community Development Director or Planning Commission (depending on requests) (§ 21.30.030(H)).
• Confirm illumination method and glare control; interior illumination and concealed reflectors are specified; CB‑MU restricts plastic and internally lit cabinet signs (§ 21.30.080(A)(5); § 21.30.080(H)(3)).
• For temporary, political, or real estate signs confirm size and duration limits (12 sq ft typical for residential real estate/temp signs; noncommercial sign time limits) (§ 21.30.090(H), (J)).
• Provide maintenance and structural details; signs must be maintained and any structural/size/color changes to nonconforming signs may trigger full conformance (§ 21.30.100; § 21.30.110).

Risks & Ambiguities

Plain-English Summary

Campbell’s sign rules live in Chapter 21.30 (Title 21). For most commercial properties you size signs at about one square foot per linear foot of storefront, with minimum and maximum area caps and a typical freestanding height limit of 14 feet. Downtown (CB‑MU) has its own, tighter material and size rules (smaller maximums and restrictions on plastic signs). Temporary and residential real‑estate signs are small and time‑limited. Big multi‑tenant projects must submit a Master Sign Plan. Always confirm the parcel’s zone/overlay and whether a Master Sign Plan or design/historic review is required; if anything is unclear, verify with the Community Development Department.

Source References

• Campbell Zoning Code, Title 21 — Chapter 21.30 (Signs): § 21.30.010 (purpose and applicability) and full Chapter text covering permanent signs, temporary signs, master sign plans, nonconforming signs, maintenance and abatement.
• Campbell Zoning Code — Permanent signs standards: § 21.30.080 (permanent sign allowances for commercial, office, industrial; CB‑MU rules in subsection H).
• Campbell Zoning Code — Master sign plan requirements: § 21.30.030(H).
• Campbell Zoning Code — Nonconforming signs and maintenance: § 21.30.100 and § 21.30.110.
• Campbell Zoning Code — Temporary signs, real estate, noncommercial substitution: § 21.30.090 (H, J).
• Campbell Zoning Code — Zoning districts (how to tell if a parcel is CB‑MU, GC, NC, PO, RD, LI, or R‑1 variants): Table 2‑1 and § 21.04.020 (Zoning districts established) and § 21.11.050 (CB‑MU standards).
• For building-code items (tactile signs, accessibility), consult California building standards (Title 24) — California Building Standards Code. (Note: Chapter 21.30 does not replace accessibility requirements.)

Retrieved passages

• Campbell Zoning Code (Section 21.30.030) High relevance show source text
• Campbell Zoning Code (§ 1) Medium relevance show source text
• Campbell Zoning Code (Section 21.18.120) Medium relevance show source text
• Campbell Zoning Code (Section 21.30.080) Medium relevance show source text
• Campbell Zoning Code (Chapter 21.62) Medium relevance show source text
• Campbell Zoning Code (chapter permits) Medium relevance show source text
• Campbell Zoning Code (§ 1) Medium relevance show source text
• Campbell Zoning Code Medium relevance show source text
• Campbell Zoning Code (Title 21) Medium relevance show source text
• Campbell Zoning Code (§ 1) Medium relevance show source text
• Campbell Zoning Code (Chapter 21.58) Medium relevance show source text
• Campbell Zoning Code (Chapter 6.40) Medium relevance show source text
• Campbell Zoning Code (§ 1) Medium relevance show source text
• Campbell Zoning Code (§ 1) Medium relevance show source text
• Campbell Zoning Code (Chapter 21.40) Medium relevance show source text

Cited sections

• Campbell Zoning Code, Title 21 — Chapter 21.30 (Signs): **§ 21.30.010** (purpose and applicability) and full Chapter text covering permanent signs, temporary signs, master sign plans, nonconforming signs, maintenance and abatement. (Title 21)
• Campbell Zoning Code — Permanent signs standards: **§ 21.30.080** (permanent sign allowances for commercial, office, industrial; CB‑MU rules in subsection H). (§ 21.30.080)
• Campbell Zoning Code — Master sign plan requirements: **§ 21.30.030(H)**. (§ 21.30.030)
• Campbell Zoning Code — Nonconforming signs and maintenance: **§ 21.30.100** and **§ 21.30.110**. (§ 21.30.100)
• Campbell Zoning Code — Temporary signs, real estate, noncommercial substitution: **§ 21.30.090 (H, J)**. (§ 21.30.090)
• Campbell Zoning Code — Zoning districts (how to tell if a parcel is CB‑MU, GC, NC, PO, RD, LI, or R‑1 variants): Table 2‑1 and § 21.04.020 (Zoning districts established) and § 21.11.050 (CB‑MU standards). (§ 21.04.020)
• For building-code items (tactile signs, accessibility), consult California building standards (Title 24) — California Building Standards Code. (Note: Chapter 21.30 does not replace accessibility requirements.) (Title 24)
• Campbell_ZoningCode.md
• 2025 California Building Code.md

• Official Campbell code library