Local zoning · Stanislaus County

Stanislaus County — Landscaping and Screening

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

Last reviewed: July 6, 2026

Overview

This page explains how landscaping and screening are regulated in unincorporated areas of Stanislaus County under the County’s zoning ordinance. It pulls together countywide landscape/irrigation requirements, visibility rules affecting fences/planting, and the district-by-district standards that most often shape site edges, parking lot planting, and walls. For broader context, see the County’s zoning, land use, and development standards; parking lot landscaping interacts closely with the County’s parking rules, and many projects route through design review or sit within overlay districts.

Most nonresidential sites in unincorporated areas must landscape visible setbacks and parking lots and, where required by district standards, build an eight‑foot masonry wall along any edge that abuts residential or agricultural zoning (§ 21.60.070; § 21.64.080; § 21.42.050(I)) .

Countywide baseline standards

Landscape and irrigation chapter applies when any part of the code or a permit condition requires landscaping; it generally does not force landscaping on single‑family homes, except for model homes and certain tree‑planting provisions (§ 21.102.020) .
Plans must be prepared by a licensed landscape architect, landscape contractor, architect, engineer, or certified irrigation designer (§ 21.102.040(A)) .
Plant selection: at least 90% of plants in non‑turf areas must be well‑suited to the region and require minimal water once established (§ 21.102.040(B)) .
Where a district requires landscape plans, the Director reviews preliminary and final plans; surety may be required to ensure installation and maintenance (§ 21.61.070; § 21.62.070) .

Visibility and fence/planting basics that affect screening

Corner visibility triangle: within 25 feet of an intersecting street corner, no obstruction over 3 feet in height; street trees are allowed if pruned above 8 feet to maintain sight lines (§ 21.08.060(H)) .
Double‑frontage lots with restricted rear access: solid fences or screen planting up to 8 feet are allowed on the rear property line (§ 21.08.060(G)) .
Several districts also apply a 3‑foot limit for fences/hedges in required front yards, to preserve visibility (see districts below).

Parking lot landscaping and perimeter screening (industrial/business park districts)

The industrial districts require landscaped setbacks and detailed parking‑lot planting and screening:

Landscape setbacks: all required setbacks, open spaces, and utility/drainage easements must be landscaped unless the Director finds landscaping unnecessary (§ 21.61.080(A); § 21.62.080(A)) .
Perimeter screening along streets: provide a landscaped planting strip equal to the district’s setback or 15 feet, whichever is more; design and maintain it to screen cars from the street to a height of 30–42 inches; trees min. 1 per 30 linear feet (§ 21.61.080(C)(5)(a); § 21.62.080(C)(5)(a)) .
Side/rear edges of nonresidential parking: provide a 5‑foot landscape strip with trees at 1 per 30 linear feet (§ 21.61.080(C)(5)(b); § 21.62.080(C)(5)(b)) .
Adjacent to buildings: provide a 5‑foot landscape strip (§ 21.61.080(C)(5)(c); § 21.62.080(C)(5)(c)) .
Interior parking lot landscaping: for industrial/manufacturing uses, landscape at least 6% of the gross parking lot area and plant one tree per 10 spaces; disperse planting throughout (§ 21.61.080(C)(6)(a); (6)(b); § 21.62.080(C)(6)(a); (6)(b)) .
Curbs/bumpers: plant areas must be protected by 6‑inch concrete curbs; up to 2 feet of stall depth may be landscaped to allow bumper overhang with low‑growth plants (§ 21.61.080(C)(2), (4); § 21.62.080(C)(2), (4)) .

Decision‑relevant standards at a glance

Requirement	Standard	Applies primarily to	Code Reference
Perimeter street‑edge planting strip	Setback depth or 15 ft (greater governs); screen cars to 30–42 in; 1 tree/30 lf	Industrial/Business Park sites	§ 21.61.080(C)(5)(a); § 21.62.080(C)(5)(a)
Interior parking‑lot landscaping	≥6% of gross lot area; 1 tree/10 spaces	Industrial/manufacturing uses	§ 21.61.080(C)(6)(a); § 21.62.080(C)(6)(a)
Building‑edge landscape strip	5 ft min adjacent to structures	Industrial/Business Park sites	§ 21.61.080(C)(5)(c); § 21.62.080(C)(5)(c)
Corner visibility (all fronts)	No obstruction >3 ft within 25‑ft triangle	Any zone with a front yard	§ 21.08.060(H)
Walls abutting residential/ag zoning	8‑ft masonry wall required (district‑specific)	M, LM, PI districts (also appears in M‑U chapter—see gaps)	§ 21.60.070; § 21.64.080; § 21.42.050(I)
Front‑yard fence/hedge height	3‑ft max in required front yards (visibility)	Example districts: PI, LM, R‑2	§ 21.42.060(B); § 21.64.040(D); § 21.32.040(C)
Plan preparation	Licensed design professional required	Where landscaping is required by code	§ 21.102.040(A)

District‑by‑district standards and practice

Industrial Business Park (IBP) — Chapter 21.61

Purpose/where it applies: The IBP district organizes light industry and business‑park uses in unincorporated areas while protecting adjacent areas from impacts (§ 21.61.010) .
Typical permitted uses: light manufacturing/assembly, R&D, corporate offices, distribution support (§ 21.61.020(B)) .
Key dimensional standards: front/side/rear setbacks of 15 ft/10 ft/15 ft; max height 45 ft; site coverage 50% (Table 21.61.B) (§ 21.61.040) .
Landscaping/screening:
- Preliminary and final landscape plan required; Director review; surety may be required (§ 21.61.070) .
- Landscape visible setbacks and parking areas, with screening and tree ratios as detailed above (§ 21.61.080) .
Interactions: Parking design must satisfy both planting/screening and parking counts.

Light Industrial (IL) — Chapter 21.62

Purpose/uses: Not found in retrieved materials.
Key dimensional standards: front/side/rear setbacks 15 ft/10 ft/15 ft; max height 45 ft; site coverage 50% (Table 21.62.B) (§ 21.62.040) .
Landscaping/screening:
- Preliminary and final landscape plan required; Director review; possible surety; water‑efficiency compliance (§ 21.62.070) .
- Same setback, perimeter, and interior parking landscaping rules as IBP (§ 21.62.080) .

Manufacturing (M) — Chapter 21.60

Purpose/uses: Not found in retrieved materials.
Key dimensional standards: yards vary by street type; see chapter for setbacks (§ 21.60.050) .
Landscaping/screening:
- Where an M site abuts residential or agricultural zoning (or a residential P‑D), construct an 8‑ft masonry wall; no wall if a building directly abuts an alley (§ 21.60.070) .
Practical: Walls often pair with landscape strips on the residential side; verify any added planting with design review.

Limited Manufacturing (LM) — Chapter 21.64

Purpose/uses: Not found in retrieved materials.
Key dimensional standards: see chapter; includes front/side/rear yards and height rules (§ 21.64.040; § 21.64.050) .
Landscaping/screening:
- 8‑ft masonry wall along edges abutting residential/ag or residential P‑D (alley exception) (§ 21.64.080) .
- Visibility protection: no fence/screen planting over 3 ft in required front yards and street‑side corners unless visibility is maintained (§ 21.64.040(D)) .

Planned Industrial (PI) — Chapter 21.42

Purpose/uses: Planned industrial districts implemented via a development plan (§ 21.42.010 et seq.) .
Key dimensional standards: 35‑ft max height; yards set by plan (§ 21.42.060; § 21.42.080) .
Landscaping/screening:
- Landscape at least 5% of each parcel/phased area; completed before final inspection/occupancy (§ 21.42.050(A)) .
- 8‑ft masonry wall required where PI abuts residential/ag zoning or residential P‑D; Commission may waive if protection is unnecessary; chain‑link/other fencing may be required instead (§ 21.42.050(I)) .
- Front‑yard visibility: fences/hedges/screen planting over 3 ft are prohibited in required front yards/corner sides unless visibility isn’t obstructed (§ 21.42.060(B)) .

Mixed‑Use (M‑U) — Chapter 21.58

Purpose/where it applies: The M‑U district promotes high‑quality projects combining residential and commercial in vertical or horizontal formats (§ 21.58.010) .
Landscaping/screening found in retrieved materials (section number not shown): total planted area targets of 5% for existing buildings and 10% for new construction, with landscape plans conforming to Chapter 21.102; screening provisions include an 8‑ft masonry wall where the site adjoins residential/ag zoning and privacy controls for upper‑story windows/balconies next to R‑1 lots (appears under “Open Space and Landscaping” and “H. Screening” within Chapter 21.58; verify exact §) .

Residential example — Two‑Family Residential (R‑2) — Chapter 21.32

Relevance to screening: In R‑2, fences/hedges/screen planting may be up to 8 ft in side/rear yards but are limited to 3 ft in required front yards and street‑side corner yards, unless visibility is not obstructed (§ 21.32.040(C)) .
Note: Residential districts do not generally mandate landscape plans; Chapter 21.102 does not itself require landscaping for single‑family homes (§ 21.102.020) .

Checklist

Identify your zoning district and any overlays using the County’s zoning and overlay districts pages.
Confirm whether landscaping is required by your district or entitlement, and if so, hire a qualified professional to prepare plans (§ 21.102.040(A); § 21.61.070; § 21.62.070) .
For IBP/IL projects, lay out parking lot landscaping: 15‑ft street‑edge planting strip (or district setback if deeper), 5‑ft strips at sides/rear and along buildings, 6% interior landscaping/1 tree per 10 spaces (§ 21.61.080; § 21.62.080) .
Where your site abuts residential or agricultural zoning (or residential P‑D), check your district for the required 8‑ft masonry wall (M, LM, PI; M‑U chapter also contains this—verify §) (§ 21.60.070; § 21.64.080; § 21.42.050(I)) .
Keep visibility clear at corners and in required front yards (3‑ft maximum obstruction within the 25‑ft triangle, and 3‑ft fence/hedge limits where applicable) (§ 21.08.060(H); e.g., § 21.42.060(B); § 21.64.040(D); § 21.32.040(C)) .
Coordinate landscape layout with parking counts/aisles and any design review conditions.
If within a city’s sphere of influence or subject to local water‑efficiency ordinances referenced in §§ 21.61.070(G)/21.62.070(G), align irrigation/planting with those rules; Verify with the jurisdiction .
If an existing site is lawful but doesn’t meet current standards, see nonconforming uses before altering site edges.

Risks & Ambiguities

Issue	Why it matters	What to verify
Mixed‑Use (M‑U) section numbering	Retrieved text shows M‑U landscaping/screening content without a clear § number	Confirm the specific § within Chapter 21.58 for planted‑area minimums and the 8‑ft wall rule; Verify with the jurisdiction
“Residential/agricultural adjacency”	Triggers an 8‑ft wall in several districts	Confirm the zoning on the abutting parcel(s) and whether a residential P‑D counts in your case (§ 21.60.070; § 21.64.080; § 21.42.050(I))
Visibility vs. screening	Front‑yard/traffic safety limits can cap shrub/wall heights	Map the 25‑ft corner triangle and apply the 3‑ft max obstruction (§ 21.08.060(H)); check any district‑specific 3‑ft limits (e.g., PI/LM/R‑2)
Water‑efficiency cross‑references	IBP/IL chapters reference county or applicable city water‑efficiency ordinances	Confirm which ordinance set governs if you’re inside a city sphere of influence (§ 21.61.070(G); § 21.62.070(G))
P‑D “walls shall be landscaped” content	Retrieved P‑D plan content implies wall landscaping, but § number isn’t shown	Not found in retrieved materials; request the specific § from the County file set

Plain‑English Summary

In unincorporated Stanislaus County, expect to landscape visible setbacks and parking lots and, where your site backs up to homes or farmland, to build an eight‑foot masonry wall in certain industrial districts. The County also enforces clear‑view rules at corners and front yards, caps fence/hedge height in those areas, and requires professional landscape/irrigation plans when landscaping is required.

Source References

§ 21.102.010–.040 (Landscape and Irrigation Standards—purpose, applicability, plan preparation, plant selection)
§ 21.08.060(G), (H) (Yards—rear‑line 8‑ft screen planting allowance for double‑frontage lots; corner visibility triangle)
§ 21.61.010; § 21.61.020(B); § 21.61.040; § 21.61.070; § 21.61.080 (Industrial Business Park—purpose, uses, standards, landscape plan process, landscape area requirements)
§ 21.62.040; § 21.62.070; § 21.62.080 (Light Industrial—standards; landscape plan process; landscape area requirements)
§ 21.60.050; § 21.60.070 (Manufacturing—yards; screening wall at residential/ag edges)
§ 21.64.040(D); § 21.64.050; § 21.64.080 (Limited Manufacturing—front‑yard visibility; yards; screening wall at residential/ag edges)
§ 21.42.050(A), (I); § 21.42.060(B) (Planned Industrial—5% site landscaping; 8‑ft wall at residential/ag edges; 3‑ft front‑yard visibility rule)
§ 21.58.010; Chapter 21.58 landscaping/screening content (M‑U—purpose; open‑space/planting and screening appear in retrieved text without a shown § number)
§ 21.32.040(C) (R‑2—fence/hedge heights in front/side/rear yards)
See also: Stanislaus County zoning & planning overview, parking, design review, overlay districts, signage, nonconforming uses

Sources

Retrieved passages

Stanislaus County Zoning Code (§ 21.61.080.) High relevance
Stanislaus County Zoning Code (§9) High relevance
Stanislaus County Zoning Code (§11) High relevance
CWUIC § 65850.6 (Title 24) High relevance
CBC § 9 (§9-125) High relevance
Stanislaus County Zoning Code (§ 21.62.080.) Medium relevance
Stanislaus County Zoning Code (§17) Medium relevance
Stanislaus County Zoning Code (§ 21.61.080.) Medium relevance
Stanislaus County Zoning Code (§1) Medium relevance
Stanislaus County Zoning Code Medium relevance
Stanislaus County Zoning Code (§1) Medium relevance
Stanislaus County Zoning Code (§ 21.40.080.) Medium relevance

Cited sections

Official Stanislaus County code library

Frequently asked questions

Do I need to landscape my parking lot in unincorporated Stanislaus County?

Yes, if you’re in industrial/business park districts, with street‑edge planting strips, side/rear strips, and interior landscaping at 6% of the lot plus 1 tree per 10 spaces (§ 21.61.080; § 21.62.080) .

When is an eight‑foot masonry wall required along my property edge?

In the Manufacturing (M), Limited Manufacturing (LM), and Planned Industrial (PI) districts when you abut residential or agricultural zoning (and certain residential P‑D areas). There’s an alley exception and, in PI, possible waivers (§ 21.60.070; § 21.64.080; § 21.42.050(I)) .

How tall can front‑yard fences or hedges be?

Typically 3 feet in required front yards and street‑side corners (visibility rule), with district‑specific provisions in PI, LM, and R‑2; corner triangles also limit height (§ 21.42.060(B); § 21.64.040(D); § 21.32.040(C); § 21.08.060(H)) .

Do single‑family homes have to submit a landscape plan?

Not by Chapter 21.102 alone; that chapter applies when landscaping is required elsewhere in the code or by conditions, and it does not require landscaping for single‑family homes (other than model homes and certain tree‑planting provisions) (§ 21.102.020) .

Who can prepare my landscape and irrigation plans?

A licensed landscape architect, landscape contractor, architect, engineer, or certified irrigation designer must prepare them (§ 21.102.040(A)) .

What if my site is near a city’s sphere of influence with its own water rules?

IBP and IL chapters require compliance with applicable county or city water‑efficient landscaping ordinances; coordinate early with staff (§ 21.61.070(G); § 21.62.070(G)) .

Are there special rules for mixed‑use projects?

Yes. Chapter 21.58 includes planted‑area minimums and screening/privacy controls, but the retrieved text did not show the specific § number. Verify the exact § in Chapter 21.58 before final design (Not found in retrieved materials for §; Chapter 21.58 content retrieved) .

How do landscaping rules interact with parking counts and aisles?

Landscape islands/strips must be designed around accessible paths and stalls, and curbing/bumper‑overhang allowances can help meet both planting and parking standards (§ 21.61.080(C)(2)–(4); § 21.62.080(C)(2)–(4)) .

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