Local zoning · Tehama County

Tehama County — Signage

Signage under the Tehama County local zoning and planning code, with the controlling citations.

Last reviewed: July 6, 2026

Overview

This page distills how Title 17 Zoning regulates signage in the unincorporated areas of Tehama County. It focuses on where signs are allowed, size/illumination limits, and special-case sign rules tied to specific districts and uses. For district context and how signs fit into a project, see the county’s zoning, land use, and development standards overviews.

Key takeaway: In unincorporated Tehama County, most on‑premises business signs in commercial and industrial areas follow a frontage-based sizing cap, while several special uses (e.g., communications, wind energy, mobile vending, and certain residential/nonresidential districts and overlays) have their own, more specific signage limits.

Countywide definitions that affect signs

The code defines “outdoor advertising sign” and “outdoor advertising structure” (billboards and similar), which appear throughout the ordinance and are important when a sign advertises something not occurring on the site. The retrieved definitions describe an outdoor advertising sign as “any … sign … placed for outdoor advertising purpose” and an outdoor advertising structure as “any structure … erected or maintained for outdoor advertising purposes.” Code section number not shown in retrieved export; definition text retrieved from Title 17 definitions. Verify with the jurisdiction.

Core commercial/industrial sign standards (applies across C and M zones)

On-premises signs must advertise the primary permitted use(s) or services on the site; size limited to an aggregate of 2 sq ft per lineal foot of street frontage, up to 400 sq ft total, and 6 ft height. Directional/informational signs up to 6 sq ft may be allowed with a use permit. Moving/rotating/animated lighting is prohibited, with narrow exceptions (off-site digital signs approved by the County, barber poles, time/temperature signs in commercial/industrial, and community identification signs). Illumination may be internal or external (halo lighting allowed). Pole signs identifying the on-site use are allowed at/adjacent to the structure, subject to the same 2 sq ft/lf and 400 sq ft caps. Code section number not shown in retrieved export; these standards are published under development design standards that “apply to all commercial and industrial zones.” Verify with the jurisdiction.
Off‑site advertising (outdoor advertising signs/structures that do not pertain to the on-site use) may be allowed with a use permit in M-1 and M-2. Code section number not shown in retrieved export; verify with the jurisdiction.

Related review steps for larger projects often include design review and site landscaping and screening standards for nonresidential districts.

District-by-District and Use-Specific Rules

Below are the sign rules that the zoning code itself makes explicit for particular districts/uses. Where the retrieved ordinance did not provide a section number, this is called out for verification.

C-1 Neighborhood Commercial

Purpose and where it applies: The C‑1 district implements “neighborhood center and general commercial” map designations for local-serving goods/services in unincorporated areas.
Typical uses: Neighborhood-scale commercial (see district tables under zoning); confirm your use with Planning.
Key sign controls: Follow the countywide commercial/industrial standards summarized above (2 sq ft/lf, 400 sq ft max, 6 ft tall; illumination allowed; animated lights generally prohibited, with noted exceptions). Code section number for the sign standards not shown in retrieved export; verify with the jurisdiction.

C-2 Community Commercial

Purpose/uses: Community-serving retail/services in unincorporated areas (see zoning).
Sign controls: Same commercial/industrial standards (2 sq ft/lf, 400 sq ft max, 6 ft height; illumination allowed; animation limited). Code section number not shown in retrieved export; verify with the jurisdiction.

C-3 General Commercial

Purpose/uses: Higher-intensity commercial nodes (see zoning).
Sign controls: Same commercial/industrial standards (2 sq ft/lf, 400 sq ft max, 6 ft height; illumination allowed; animation limited). Code section number not shown; verify with the jurisdiction.

C-4 Local Convenience Center Commercial

Purpose/uses: Local convenience centers (see zoning).
Sign controls: Same commercial/industrial standards. Code section number not shown; verify with the jurisdiction.

M-1 Light Industrial

Purpose/uses: Light manufacturing and compatible uses (see zoning).
Sign controls: Same commercial/industrial standards for on-premises signs; off‑site outdoor advertising may be permitted with a use permit in M‑1. Code section number not shown; verify with the jurisdiction.

M-2 General Industrial

Purpose/uses: General/heavy industrial (see zoning).
Sign controls: Same commercial/industrial standards for on-premises signs; off‑site outdoor advertising may be permitted with a use permit in M‑2. Code section number not shown; verify with the jurisdiction.

R-4 General Apartment (multifamily)

Purpose/uses: Higher-density residential (multifamily). Key dimensional standards include front setbacks of 50 ft from roadway centerline or 20 ft from property line (greater governs); side yards totaling ≥20% of lot width with no side < 6 ft; max height 65 ft/6 stories; lot area 6,000 sq ft; width 60 ft.
Sign controls: For a nonresidential use located on an R‑4 property, up to one on‑premises sign is allowed, max 6 sq ft. See § 17.22.020(F).

-A Animal Raising Combining Overlay

Where it applies: The -A overlay may be combined with residential districts to allow specified animal-raising uses; overlay rules apply in addition to the base district (see § 17.48.010).
Sign controls: Sale of agricultural products produced on the premises may be advertised with one sign up to 4 sq ft. See § 17.48.020(D).

Communication Facilities (countywide use standards)

Applicability: Fixed wireless/telecom installations regulated by Chapter 17.71.
Sign controls: No advertising signage or identifying logos on any facility; only small ID plates for emergency notification are allowed. See § 17.71.090(I).

Wind Energy Systems (countywide use standards)

Sign controls: Warning signs ≤4 sq ft required on/near systems; no advertising or product/service promotion; the manufacturer’s identification sign is allowed up to 32 sq ft. See § 17.83.100.

Special Event Facilities and Wineries (administrative permits)

Temporary signs: For permitted special events and winery events, temporary directional signs are allowed during event activities if placed outside the county right‑of‑way. Exact section number not shown in retrieved export; special event standards are within Chapter 17.88 (Winery/Special Event provisions). Verify with the jurisdiction.
For broader process and conditions, see variances and exceptions where applicable.

Mobile Food Vending (use permits)

On-site sign placement: Signage that advertises the vending unit must be directly adjacent to the site and must not interrupt vehicle or pedestrian circulation; final conditions are set with the use permit. Exact section number not shown in retrieved export; verify with the jurisdiction.

Bed-and-Breakfast/Short-Term Lodging (registration)

Identification sign: Certain small lodging uses must post a roadside sign; signs >4 sq ft require planning commission approval. The retrieved export shows this requirement but does not include the specific section number under Chapter 17.08; verify with the jurisdiction.

Building code interface

Structural, electrical, and safety aspects of signs fall under the California Building Standards Code. Appendix H provides engineering and illumination constraints (e.g., attachment, wind/seismic). Local zoning is more about location, size, and type, while Title 24 governs how you build and power the sign.

Quick Standards Table (selected cases)

Situation	What’s allowed	Key Limits	Code Reference
On‑premises business signs in commercial/industrial zones	Aggregate sign area by frontage	2 sq ft/lf frontage; max 400 sq ft; 6 ft height; no animated lights (limited exceptions); illumination allowed; pole signs OK at/adjacent to structure	Section number not shown; applies “to all commercial and industrial zones” (verify).
Off‑site outdoor advertising in industrial zones	Billboard/outdoor advertising signs	May be permitted with a use permit in M‑1/M‑2	Section number not shown; verify.
R‑4 nonresidential use	One on‑premises sign	Max 6 sq ft	§ 17.22.020(F)
-A Animal Raising overlay produce sales	One on‑premises sign	Max 4 sq ft	§ 17.48.020(D)
Communication facilities	ID plate only	No advertising or identifying logos	§ 17.71.090(I)
Wind energy systems	Safety and manufacturer ID	Warning signs ≤4 sq ft; manufacturer ID ≤32 sq ft	§ 17.83.100
Special event/winery events	Temporary directional signs	Allowed during event; keep out of county ROW	Section number not shown; verify.
Mobile food vending	Adjacent-to-site ad signage	Must not interrupt circulation; conditions via permit	Section number not shown; verify.

Checklist

Confirm your base district and any combining overlays (-A, -S, etc.) on the official map; start at the county zoning page.
For commercial/industrial sites, calculate allowable aggregate sign area by frontage (2 sq ft/lf; 400 sq ft cap; 6 ft height) and confirm any use‑permit needs for directional signs or off‑site advertising in M‑zones. Code section number not shown; verify with Planning.
If in R‑4 with a nonresidential use, keep the sign to one, max 6 sq ft (§ 17.22.020(F)).
If you have the -A overlay and sell on‑premises produce, limit the sign to 4 sq ft (§ 17.48.020(D)).
For communication towers, do not place logos/ads; only a small emergency ID plate is allowed (§ 17.71.090(I)).
For wind systems, install required warning signs (≤4 sq ft) and keep any manufacturer ID ≤32 sq ft (§ 17.83.100).
For special events/winery events, use only temporary directional signs and keep them out of the county right‑of‑way (section not shown; verify).
For mobile food vending, keep signage immediately adjacent to the site and clear of circulation; conditions apply via the use permit (section not shown; verify).
Coordinate early with design review if triggered by your project scope, and check parking layout/visibility impacts.
Ensure the sign’s structure/electrical comply with the California Building Standards Code.

Risks & Ambiguities

Issue	Why it matters	What to verify
Missing § numbers for some countywide C/M sign standards	The retrieved ordinance export shows the standards but not the exact section number	Ask Planning for the current codified § governing “development design standards—Signs” that apply to all C and M zones.
Off‑site digital signs, community ID exceptions	Exceptions to animation ban are narrow	Whether your proposal qualifies as an “approved off‑site digital sign” or “community identification sign.”
Industrial off‑site advertising	Billboards may need a use permit and state permits	Confirm M‑1/M‑2 allowance and CUP criteria; also check Caltrans if near a state highway.
Special event/winery temporary signs	Standards exist but § number not shown in export	Confirm the exact § in Chapter 17.88 that controls temporary event signage and any time/place/manner details.
Mobile food vending signs	Placement must not impede circulation	CUP conditions often customize sign placement/size/appearance; get them in writing.
Nonconforming signs	Older signs may predate current rules	How nonconforming uses standards apply to existing signs or faces/cabinets you plan to alter.
Scenic/highway/frontage overlays	Other overlays can tighten visual standards	Check overlay districts and the General Plan scenic highway policies that can affect visibility/format.

Plain-English Summary

If you’re in unincorporated Tehama County, business signs in commercial/industrial areas generally scale with your street frontage (2 sq ft/lf; 400 sq ft max; 6 ft tall), with lighting allowed but animation restricted. Special cases matter: R‑4 multifamily parcels with a nonresidential use get only one small sign (6 sq ft), the -A animal-raising overlay allows a 4 sq ft produce‑sale sign, communications facilities may not have logos/ads, and wind turbines are limited to safety/manufacturer ID signage. Some event and mobile vending signs are allowed but must follow placement and permit conditions.

Source References

Title 17 Zoning — general applicability and district list: §§ 17.02.060; 17.06.010.
R‑4 General Apartment — permitted sign for nonresidential uses: § 17.22.020(F); yards/height/lot standards: §§ 17.22.050, 17.22.060, 17.22.080.
-A Animal Raising Combining District — produce sign up to 4 sq ft: § 17.48.020(D); overlay applicability: § 17.48.010.
Communication Facilities — signage prohibition (ads/logos): § 17.71.090(I).
Wind Energy Systems — signage: § 17.83.100.
Commercial/Industrial “development design standards—Signs” (2 sq ft/lf; 400 sq ft cap; height 6 ft; illumination; animation limits; directional signs by CUP; pole sign placement; off‑site advertising by CUP in M‑1/M‑2). Section number not shown in retrieved export; verify with the jurisdiction.
Special Event/Winery temporary directional signs (outside county ROW). Section number not shown; verify.
Mobile Food Vending signage adjacency and circulation protection (CUP‑conditioned). Section number not shown; verify.
California Building Standards Code, Appendix H—Signs (structural/electrical).

Information Gaps

Exact § citation for the countywide “development design standards—Signs” that apply to all commercial and industrial zones: Not found in retrieved materials.
Exact § citation(s) within Chapter 17.88 for special event/winery temporary signage: Not found in retrieved materials.
Exact § citation for mobile food vending signage: Not found in retrieved materials.
Direct sign allowances in districts other than R‑4 and -A overlay (e.g., explicit C‑ or M‑chapter section numbers): Not found in retrieved materials.

Sources

Retrieved passages

CBC § 1 (section are) High relevance
Tehama County Zoning Code (Chapter 13.12) Medium relevance
CBC § 6 (§ 6) Medium relevance
CBC § 6 (section shall) Medium relevance
CEC § H103 (SECTION H103) Medium relevance
Tehama County Zoning Code (Section 21000) Medium relevance
Tehama County Zoning Code Medium relevance
CBC § H101 (SECTION H101) Medium relevance
Tehama County Zoning Code Medium relevance
Tehama County Zoning Code Medium relevance
CBC § 18214 (section 18214.) Medium relevance
CBC § H103 (SECTION H103) Medium relevance
California Building Code Medium relevance
CRC § 130 Medium relevance
California Residential Code Medium relevance
Tehama County Zoning Code (§ 6) Medium relevance

Cited sections

Official Tehama County code library

Frequently asked questions

What are the sign size limits for a business in unincorporated Tehama County?

For commercial/industrial sites, signs scale with street frontage: 2 sq ft per lineal foot of frontage, up to 400 sq ft total and 6 ft height; illumination is allowed, but animated lighting is mostly prohibited. Some small directional signs (≤6 sq ft) may be allowed by use permit. The retrieved export shows these standards but omits the § number; verify the current codified section with Planning.

Can I install a billboard on an industrial parcel?

Possibly. Off‑site outdoor advertising signs/structures that don’t advertise an on-site use can be permitted by use permit in M‑1 and M‑2. Confirm the current § reference and use‑permit criteria with the County before proceeding.

How big can a sign be for a nonresidential use in an R‑4 multifamily district?

One on‑premises sign up to 6 sq ft is allowed when the use is nonresidential and located on an R‑4 parcel. See § 17.22.020(F).

I have the -A Animal Raising overlay. Can I advertise produce sales?

Yes. The -A overlay allows a sign up to 4 sq ft to advertise agricultural products produced on the premises. See § 17.48.020(D).

Are logos allowed on cell towers or other communication facilities?

No. Advertising signage and identifying logos are prohibited on communication facilities; only a small identification plate for emergency contact is allowed. See § 17.71.090(I).

What signage is allowed for wind turbines?

Install required warning signs up to 4 sq ft and, if desired, a manufacturer’s ID sign up to 32 sq ft. No other advertising is allowed. See § 17.83.100.

Can wineries or special event venues post temporary directional signs?

Yes, but only during event activities and outside the county right‑of‑way; confirm the exact § in Chapter 17.88 and any detailed time/place/manner limits with Planning.

What about the structural and electrical requirements for illuminated signs?

Those are governed by the California Building Standards Code (Title 24), including design, attachment, and illumination provisions in Appendix H. Zoning controls where/what; building code controls how it’s built.

Ask about any Tehama County property

Get a cited, plain-English answer on Tehama County zoning, setbacks, FAR, ADUs and permits — for any address.

Start Free Trial