Alturas — Signage

Last reviewed: July 3, 2026

Overview

Alturas regulates signs in Chapter 28 (the Zoning Ordinance), Article IV, Division 7 (Sign Standards). The rules categorize signs (temporary vs permanent; wall, free‑standing, window, sandwich board, vehicle, etc.), set size/placement/illumination/maintenance limits, and require a Sign Permit for most commercial, industrial, high‑density residential and recreational advertising signs. Key policy aims are legibility, public safety (no glare or traffic obstruction), neighborhood compatibility, and removal of obsolete or damaged signs § 28.46.010–.060 . Sign permits are processed under the permit rules in § 28.52.020 .

Note: this page covers only what the Alturas zoning ordinance says about signs (Chapter 28). For construction/structural requirements consult the California Building Standards Code.

How the sign rules are structured in the code

• General applicability and definitions: § 28.46.010 .
• Permitted sign types and specific dimensional/operational rules (temporary, portable, permanent, wall, free‑standing, window, sandwich boards, vehicle signs): § 28.46.020 .
• General design, placement, illumination and maintenance criteria (timers for illuminated signs, prohibition of flashing signs, maintenance responsibility, retention of structures): § 28.46.030 .
• Exemptions (window signs under 10% of window area, small real‑estate signs, flags, political signs with time limits, historic markers): § 28.46.040 .
• Enforcement, penalties, and treatment of existing signs: § 28.46.050–.060 .
• Sign Permit application and required materials (site plan for free‑standing signs, elevations for building signs, illustrations/material samples): § 28.52.020 .

District‑by‑district guidance (what the ordinance actually says)

Below are the zones and overlays for which the Alturas ordinance includes explicit signage language. Where the code is silent about a zone-specific standard, the citywide sign standards apply (Article IV, Division 7).

Commercial (example: C‑1)

• Purpose / typical uses: neighborhood retail, services and small businesses as shown in the Land Use Matrix (see Alturas Zoning).
• Signs: Commercial uses are specifically covered by the Sign Permit rules—the ordinance requires a Sign Permit for "commercial, industrial, high density residential, and recreational uses" that advertise location/products/services § 28.52.020(A) .
• Key dimensional/operational standards that apply to commercial properties (citywide): sandwich boards limited to 42 in height × 30 in width and one per business; sidewalk clearance 60 in if on sidewalk; wall signs limited to 60 sq ft total per site (with limited additional allowances) and may not project more than 6 inches from wall surface; one free‑standing sign permitted on lots with at least 200 linear feet of street frontage § 28.46.020; § 28.46.030 .
• Where it applies: all commercial lots — follow the citywide standards unless a Use Permit or Variance is approved § 28.52.020(A) .

Industrial (M‑1 / M‑2 and similar)

• Purpose / typical uses: industrial and manufacturing uses (see the Land Use Matrix).
• Signs: Industrial advertisers are included in the Sign Permit scope; the general sign categories, illumination limits, and prohibition of flashing signs apply § 28.52.020(A); § 28.46.030.B .
• Dimensional standards: citywide rules apply (free‑standing allowances, wall sign totals, etc.). The code does not set separate square‑footage tables by zone in the retrieved materials. Not found in retrieved materials — verify with the jurisdiction for any industrial‑zone supplements.

Residential (R‑1, R‑2, R‑3)

• Purpose/typical uses: single‑family to multi‑family housing (see Alturas Land Use).
• Signs: Most residential uses are subject to the general sign rules; specific references: rooming houses may not have signage except by Use Permit and, if approved, are allowed one sign consistent with the Sign Standards § 28.38.110 . High‑density residential properties that advertise may trigger Sign Permits per § 28.52.020(A) .
• Dimensional standards: the ordinance does not provide a separate residential sign schedule in the sign division — citywide standards and exemptions apply. Not found in retrieved materials for R‑1/R‑2 banner/specific square‑foot amounts — verify with the Director.

Mobile/Manufactured Home Parks (R‑3 parks)

• Where referenced: Mobile/manufactured home parks (R‑3) have project‑level signage rules: one permanent freestanding sign is permitted to identify the park; any other retail/restaurant on‑site may have one wall sign not exceeding 10 sq ft, oriented toward park patrons and not toward public streets § 28.38.100.G.4–G.7 .
• Permits: these sign permissions are to be specified in the Use Permit for the Park and then approved by a Sign Permit § 28.38.100.G.4 .

Downtown Historic District (‑DH Overlay)

• Purpose / typical uses: special historic overlay protecting downtown character (see Alturas Overlay Districts).
• Signs: the ordinance references the -DH overlay for other standards (parking exemption is explicit), and historic preservation rules may apply; however, the sign division does not include a separate sign schedule for the -DH in the retrieved materials. Design review and overlay rules may impose additional limits — Verify with the jurisdiction § 28.46 (sign standards) and Overlay/Design Review sections § 28.42.020; Article IV . Not found in retrieved materials: overlay‑specific sign sizes or design guidelines — check with Planning/Design Review.

Quick reference table — most decision‑relevant rules

Practical guidance / interpretation notes

• Most applicants for commercial signs will need a Sign Permit; free‑standing signs additionally need a site plan and sometimes structural details § 28.52.020.B.2–3 .
• If you want changeable LED content or high‑resolution electronic displays, expect a Use Permit because the code requires Use Permit approval for changeable, high‑resolution LED signs § 28.46.030.B.5 .
• Sandwich boards are tightly restricted to preserve pedestrian clearance—measure your sidewalk run before assuming placement § 28.46.020.A.2.c .
• The City treats obsolete sign faces seriously; if you remove a tenant sign but leave the structure, you may need an Administrative Permit to retain/neutralize the structure § 28.46.030.C–D; § 28.52.010 .
• For signs in or near a state right‑of‑way (state highways), an encroachment permit from Caltrans is required as a condition when permits reference Caltrans ROW § 28.46.020.A.2.e .

Across this guidance, consult related site and design standards in Alturas Development Standards, and be prepared to coordinate with Alturas Design Review if your project is in a design‑review district or has notable visual impacts. Also factor in Alturas Parking and overlay constraints from Alturas Overlay Districts when preparing site plans.

Checklist (what an applicant must provide / satisfy)

• Determine whether a Sign Permit is required (commercial/industrial/high‑density residential/recreation) § 28.52.020(A) .
• Prepare a written project description with sign type, location, and size § 28.52.020.B.1 .
• If a Free‑Standing Sign: include a scaled site plan showing property, building footprints, parking and easements § 28.52.020.B.2 .
• If a Building/Wall Sign: provide an elevation showing the sign on the façade § 28.52.020.B.3 .
• Provide illustrations with outside and sign‑face dimensions, colors, materials § 28.52.020.B.4 .
• For illuminated signs: show illumination method, timer settings, and glare mitigation § 28.46.030.B .
• For sandwich boards or signs in a Caltrans ROW: verify Caltrans encroachment permit requirement § 28.46.020.A.2.e .
• Check exemptions (window signage ≤10% of window area, small real‑estate signs ≤6 sq ft) to avoid unnecessary permitting § 28.46.040 .

Risks & Ambiguities

Plain‑English summary

Alturas treats signs as a land‑use matter: most commercial signs need a Sign Permit, wall and free‑standing signs have clear size and placement rules (e.g., wall signs typically capped at 60 sq ft; sandwich boards are small and must leave 60 in of sidewalk), illuminated signs must use timers and avoid glare, and off‑premises billboards are generally prohibited without a Use Permit — see § 28.46.010–.060 and § 28.52.020 for the controlling rules .

Source References

• City of Alturas Zoning Ordinance, Chapter 28 — Article IV, Division 7 (Sign Standards): § 28.46.010–28.46.060 .
• Sign permit procedures: § 28.52.020 (Sign (S) permit) .
• Sandwich boards, temporary signs, vehicle sign rules and specific sign‑type standards: § 28.46.020 .
• Design, illumination, maintenance and LED/changeable sign rules: § 28.46.030 .
• Exemptions (window signs, flags, political signs, historic markers): § 28.46.040 .
• Penalty and enforcement for sign violations: § 28.46.050 .
• Mobile/manufactured home park signage rules: § 28.38.100.G.4–7 .
• Rooming house signage (limits / Use Permit): § 28.38.110 .
• Chapter 28 (Zoning) header and enactment: Chapter 28 (Zoning Ordinance) .
• For construction/structural sign requirements consult the California Building Standards Code (state Title 24 / building code) — see California Building Standards Code.

Retrieved passages

• Alturas Zoning Code (Section 28.52.090.) High relevance show source text
• Alturas Zoning Code (section specifies) High relevance show source text
• Alturas Zoning Code (Section 28.52.090.) High relevance show source text
• Alturas Zoning Code (Section 28.52.020) High relevance show source text
• Alturas Zoning Code (section are) High relevance show source text
• Alturas Zoning Code (Section 28.51) High relevance show source text
• Alturas Zoning Code (Article IV) Medium relevance show source text
• CBC § 1129B (Section 1129B) Medium relevance show source text

Cited sections

• City of Alturas Zoning Ordinance, Chapter 28 — Article IV, Division 7 (Sign Standards): **§ 28.46.010–28.46.060** . (Chapter 28)
• Sign permit procedures: **§ 28.52.020 (Sign (S) permit)** . (§ 28.52.020)
• Sandwich boards, temporary signs, vehicle sign rules and specific sign‑type standards: **§ 28.46.020** . (§ 28.46.020)
• Design, illumination, maintenance and LED/changeable sign rules: **§ 28.46.030** . (§ 28.46.030)
• Exemptions (window signs, flags, political signs, historic markers): **§ 28.46.040** . (§ 28.46.040)
• Penalty and enforcement for sign violations: **§ 28.46.050** . (§ 28.46.050)
• Mobile/manufactured home park signage rules: **§ 28.38.100.G.4–7** . (§ 28.38.100.G.4)
• Rooming house signage (limits / Use Permit): **§ 28.38.110** . (§ 28.38.110)
• Chapter 28 (Zoning) header and enactment: **Chapter 28** (Zoning Ordinance) . (Chapter 28)
• For construction/structural sign requirements consult the California Building Standards Code (state Title 24 / building code) — see California Building Standards Code. (Title 24)
• Alturas_ZoningCode.md

• Official Alturas code library