Local zoning · Trinity County

Trinity County — Landscaping and Screening

Landscaping and Screening under the Trinity County local zoning and planning code, with the controlling citations.

Last reviewed: July 6, 2026

Overview

This page distills how Title 17 Zoning governs landscaping, screening, buffering, and fences/walls in the unincorporated areas of Trinity County. The ordinance concentrates its most specific landscape/screening rules in certain base districts (notably industrial and recreation-development) and in select overlays that condition vegetation removal or design review. Where the code is silent, confirm expectations through Trinity County Development Standards and project-specific design review.

Bottom line: In unincorporated Trinity County, industrial sites must submit and maintain landscaping and screening along road frontages and sensitive edges, and certain overlays can restrict or guide vegetation changes (§ 17.23.160; § 17.25.040; § 17.26.100) .

What the ordinance requires (highlights)

Industrial properties: landscape plan required; yard areas along public roads landscaped; sensitive edges screened with a solid wall when abutting homes, schools, or parks; limits on fence height and type; and enclosure/screening of trash and loading areas (§ 17.23.160(B)(1)–(6)) .
Recreation Development District (R-D-1): the Planning Commission may require landscaping and screening from roads, plus “buffering” of homes by distance/topography/forest cover, paired with specific dimensional standards (§§ 17.26.030–.090; § 17.26.100(A)(2), (8)) .
Scenic “SC” overlay: vegetation removal is reviewed; trimming/removing bushes and trees under 20 feet may proceed without a use permit if done without heavy machinery (chainsaws allowed), which can affect how you plan screening or views (§ 17.25.040(D)) .
Specific Unit Development (SUD): submittals must show the overall landscape concept on the schematic plan; actual standards are set case-by-case (§ 17.24.020(A)) .

Key standards and where they apply

District/Overlay	Decision-relevant requirement	Where it applies	Code Reference
Industrial zones	Submit landscape plan before building permit issuance	All new/expanded industrial development	§ 17.23.160(B)(1)(a)
Industrial zones	Landscape all required yards fronting public roads; maintain plants and grade for drainage	Street-facing yards	§ 17.23.160(B)(1)(b)
Industrial zones	Fences/walls ≥ 6 ft require a building permit; electrified fences prohibited; absolute max height 8 ft	Site perimeter/interior	§ 17.23.160(B)(2)(a)–(c)
Industrial zones	Where abutting a residential district, school, or park: build a solid, decorative “rustic-looking” wall ≥ 6 ft	Shared property lines with sensitive uses	§ 17.23.160(B)(3)(a)
Industrial zones	Direct lighting away from neighbors/R-O-W; keep intensity to minimum for safety/security	Site lighting	§ 17.23.160(B)(4)(a)–(b)
Industrial zones	Enclose and screen trash/loading/storage with compatible materials; keep bins in enclosures	Service areas	§ 17.23.160(B)(5)(a)–(b)
Industrial zones	Keep loading operations fully on-site; placement must avoid blocking internal parking/flow	Loading design	§ 17.23.160(B)(6)
R-D-1 (Recreation Development)	Commission may require landscaping and screening from roads	All R-D-1 projects	§ 17.26.100(A)(2)
R-D-1 (Recreation Development)	Locate single-family development so it is “buffered” by distance/topography/forest cover	Residential siting within R-D-1	§ 17.26.100(A)(8)
SC overlay	Vegetation removal under 20 ft height allowed w/o use permit if no machinery (beyond chainsaw)	Parcels mapped with SC overlay	§ 17.25.040(D)
SUD (Specific Unit Development)	Schematic plan must depict landscape concept; project-specific conditions may apply	SUD applications	§ 17.24.020(A)

Tip: Landscaping around vehicle areas can also be shaped by site circulation and parking design; coordinate early with your design review submittal.

District-by-district detail (unincorporated areas)

Industrial zones

Purpose and uses: Accommodate industrial operations and related commercial/ancillary uses; residential only as allowed by separate provisions (see performance standards context in § 17.23.160(A)(1)(a)) .
Core landscape/screening standards:
- Landscape plan approval required before building permit issuance; yards on public roads must be landscaped and maintained (§ 17.23.160(B)(1)) .
- Sensitive edges: if abutting a residential district, school, or park, provide a solid decorative rustic wall ≥ 6 ft along the shared line (§ 17.23.160(B)(3)(a)) .
- Fences/walls: permit required at ≥ 6 ft; no electrified fences; absolute maximum height is 8 ft (§ 17.23.160(B)(2)) .
- Service areas and lighting must be screened/controlled as noted in the table (§ 17.23.160(B)(4)–(6)) .
Where it applies: Industrially zoned parcels in unincorporated Trinity County. Coordinate with Trinity County Zoning maps for applicability.

R-D-1 — Recreation Development District

Purpose: Enable development compatible with the Whiskeytown–Shasta–Trinity National Recreation Area while conserving scenic and natural values (§ 17.26.008) .
Typical permitted uses: Recreation-related and low-intensity uses per § 17.26.010 (see chapter context) .
Key dimensional standards: Minimum lot area (residential 0.5 ac; commercial 1 ac; industrial 3 ac), height up to two stories/40 ft, and required front/side/rear yards per §§ 17.26.030–.090 .
Landscaping and screening:
- The Planning Commission may require landscaping and screening from roads, architectural/landscape approval, and buffering of homes by distance/topography/forest cover (§ 17.26.100(A)(2), (3), (8)) .
Where it applies: Parcels within the designated recreation area boundaries in unincorporated Trinity County.

SC overlay zone

Purpose: An overlay (“SC”) that focuses staff review on siting, access, and vegetation removal (§ 17.25.040) .
Landscape/vegetation note: Removal of bushes/trees under 20 ft tall is allowed without a use permit if not performed with machinery other than hand tools like chainsaws (§ 17.25.040(D)) . This can affect whether existing screen vegetation is retained or modified.
Where it applies: Only on parcels mapped with the SC overlay in unincorporated areas. See Trinity County Overlay Districts.

SUD — Specific Unit Development District

Purpose: To allow a master-planned mix of uses and tailored development standards where conventional zoning doesn’t fit (§ 17.24.010) .
Submittal standards: A schematic plan must depict buildings, roads, parking, and “landscaping” and phases of development (§ 17.24.020(A)) .
Practical effect: Landscaping/screening conditions are imposed project-by-project during entitlement.
Where it applies: Parcels rezoned to SUD in unincorporated areas; consult Trinity County Land Use.

R-D-1/Historic areas interface

If a project also lies in a historic “special treatment” area, signage and lighting are tightly controlled (§ 17.29C.110) , which indirectly influences landscape lighting choices. Verify with Trinity County Historic Preservation and Trinity County Signage.

OS — Open Space District

Purpose and uses: Protect habitat and sensitive areas; representative permitted uses include habitat projects and grazing (§§ 17.25A.010–.020) .
Landscaping/screening: Not found in retrieved materials. Use conditions are likely applied case-by-case.

Note: Fence permitting and structural limits can intersect with the California Building Standards Code. This page does not cover Title 24 technical requirements.

Checklist

Identify your base district/overlay on the parcel and confirm you are in the unincorporated area of Trinity County. See Trinity County zoning & planning overview.
For industrial sites: prepare a landscaping plan for Planning Director review; show road-facing yard landscaping and species; include screening of trash/loading and any required edge walls (§ 17.23.160(B)(1), (3), (5)) .
If abutting homes/schools/parks: include a solid, decorative wall ≥ 6 ft along shared lines (§ 17.23.160(B)(3)(a)) .
If any fence/wall ≥ 6 ft is proposed in industrial zones: plan for a building permit; cap total height at 8 ft; no electrified fences (§ 17.23.160(B)(2)) .
In R-D-1: expect landscaping/screening from roads and buffering conditions at entitlement; reflect required setbacks and heights (§§ 17.26.030–.090; § 17.26.100(A)(2), (8)) .
In SC overlay: evaluate whether vegetation removal triggers a use permit; under-20-ft vegetation hand-removed may be exempt (§ 17.25.040(D)) .
Coordinate site lighting, circulation, and parking so fixtures are shielded and loads stay on-site (§ 17.23.160(B)(4), (6)) .
If in a historic/special-treatment area: align lighting/signage with historic standards (§ 17.29C.110) .

Risks & Ambiguities

Issue	Why it matters	What to verify
Landscape rules outside industrial zones	The code is explicit for industrial and R-D-1; other base districts are not detailed in retrieved materials	Not found in retrieved materials; confirm with Planning for your base zone
Parking-lot landscape standards	None retrieved; may affect shading/screening around stalls and drive aisles	Not found in retrieved materials; coordinate via design review
Fence/wall standards in non-industrial zones	Only industrial fence heights/types are specified in retrieved text	Not found in retrieved materials; check your zone or seek a variance if needed
SC overlay vegetation work methods	Using machinery can trigger permits	Verify exact scope with Planning per § 17.25.040(D)
R-D-1 buffering expectations	“Buffered by distance/topography/forest cover” is discretionary	Document existing natural buffers and discuss with staff under § 17.26.100(A)(8)

Plain-English Summary

If you’re developing in unincorporated Trinity County, expect to plant and maintain landscaping where your property fronts public roads—especially on industrial sites—and to hide trash/loading areas. If you border homes, schools, or parks, plan on a solid 6-foot decorative wall. Recreation-area projects often must landscape and screen from roads and keep homes naturally “buffered.” Some overlays control how you remove vegetation. When in doubt, ask Planning which rules apply to your exact zoning.

Source References

§ 17.23.160 Industrial zone performance standards (landscaping, fences/walls, screening, lighting, trash/loading)
§ 17.26.008, §§ 17.26.030–.090, § 17.26.100 R-D-1 Recreation Development District (purpose; dimensional standards; landscaping/screening; buffering)
§ 17.24.010–.020 Specific Unit Development (SUD) — schematic plan includes landscaping
§ 17.25.030–.050 SC overlay zone — scope includes vegetation removal; under-20-ft allowance without use permit (hand tools only)
§ 17.29C.110 Historic/special-treatment signage and lighting controls (indirectly affects landscape lighting)
Title 17 overview and purpose of the zoning plan (unincorporated territory scope) §§ 17.01.010, 17.03.010

Sources

Retrieved passages

Trinity County Zoning Code (Section 17.25.040) High relevance
CWUIC § 65850.6 (Title 24) High relevance
Trinity County Zoning Code (Chapter 17.24) Medium relevance
Trinity County Zoning Code (§ 1) Medium relevance
Trinity County Zoning Code Medium relevance
Trinity County Zoning Code Medium relevance
Trinity County Zoning Code (Title 16) Medium relevance
CWUIC § 1.11 (Chapter 1) Medium relevance

Cited sections

Official Trinity County code library

Frequently asked questions

Do I have to submit a landscaping plan for an industrial project in unincorporated Trinity County?

Yes. Industrial developments must submit a landscaping plan before a building permit is issued, and must landscape required yards along public roads (§ 17.23.160(B)(1)) .

What fence heights are allowed for industrial properties, and are electric fences allowed?

In industrial zones, any fence or wall 6 feet or taller needs a building permit; electrified fences are prohibited; and the maximum height is 8 feet (§ 17.23.160(B)(2)) .

I share a property line with a school. Do I need a special screen?

Yes. Where an industrial site abuts a residential district, school, or park, a solid, decorative rustic-looking wall at least 6 feet high is required along the shared line (§ 17.23.160(B)(3)(a)) .

Are there special landscaping or screening rules in the Recreation Development (R-D-1) District?

Often, yes. The Planning Commission can require landscaping and screening from roads and may require homes to be “buffered” by distance, topography, or forest cover (§ 17.26.100(A)(2), (8)) .

Can I remove trees or shrubs in the SC overlay without a permit?

If vegetation is under 20 feet tall and you’re not using machinery (chainsaws/hand tools are OK), removal may proceed without a use permit. Heavier mechanized work requires review (§ 17.25.040(D)) .

Are trash and loading areas required to be screened?

Yes. Industrial sites must enclose trash, loading, and storage areas with materials compatible with the main building and keep them out of public/neighborhood view (§ 17.23.160(B)(5)) .

Does Trinity County require parking-lot landscaping?

Not found in retrieved materials. Confirm during design review and site-plan review for your district.

What lighting limits apply so my project doesn’t spill light on neighbors?

Lighting must be directed away from surrounding land uses and public rights-of-way and be the minimum needed for safety/security on industrial sites (§ 17.23.160(B)(4)) .

Does SUD zoning set fixed landscaping rules?

No fixed countywide rules. Instead, your SUD schematic plan must show landscaping and the County will condition it project-by-project (§ 17.24.020(A)) .

Where do these rules apply?

Only in the unincorporated areas governed by Title 17 Zoning. Incorporated cities in Trinity County have their own codes (§ 17.03.010) .

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