Local zoning · Irwindale

Irwindale — Landscaping and Screening

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

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Last reviewed: July 2, 2026

Overview

This page summarizes what the Irwindale zoning code requires for landscaping, screening, buffers, fences/walls, and tree/plant rules. Everything below is drawn from the Irwindale Zoning Code (Title 17) and related site‑plan/design‑review rules; citations point to the controlling local code sections. Use this as a code‑grounded reference for preparing landscape plans and screening details — not as a substitute for a formal plan check. See the city's site‑plan and design review rules when you prepare submittals. For related topics see the city's pages on parking, design review, overlay districts, development standards and the main Irwindale zoning & planning overview.

What the Irwindale code requires — by district

Below are the most decision‑relevant landscaping and screening rules stated by district in the Irwindale Zoning Code (Title 17). Each subsection summarizes purpose, typical uses (short), key landscaping/screening standards, and where that rule applies.

Q overlay (Quarry / resource) — key screening and berming rules

  • Purpose / context: the Q overlay governs quarry and related heavy industrial uses; the overlay imposes stricter yard, berm, irrigation, dust control and screening requirements for visual and environmental protection. Uses in Q are largely conditional and subject to a use permit. See permitted uses list and reclamation rules. § 17.60.010 and follow‑ons govern the overlay.
  • Landscaping & screening standards:
    • Submit a landscape and irrigation plan prepared by a licensed landscape architect within 90 days of the city's use‑permit approval; plan must show berm contours, storm drainage, species/size/location, automatic irrigation, dust control and drought‑tolerant plantings. § 17.60.080(A)(1).
    • Install approved landscaping within one year of project approval. § 17.60.080(A)(2).
    • Front‑yard depths in the Q overlay are larger: 50 ft where abutting local streets or an A/R/C zone, 100 ft where abutting a major arterial (measured to top of slope). § 17.60.080(B)(1)–(2).
    • Earthen berms (min. 6 ft height) plus 6‑ft chain‑link or substitute decorative block wall may be required; see erosion and city engineer approvals. § 17.60.080(B)(4) and § 17.60.080(C).
  • Where it applies: All properties mapped with the Q overlay; use permits required for quarry-type operations. § 17.60.010 et seq.

M-2 (Heavy Manufacturing) — wide landscape buffers and view‑obscuring walls

  • Purpose / typical uses: heavy industry and uses requiring buffering from residences; many uses require CUP or development agreement. § 17.56.030 lists limits and buffering.
  • Key standards:
    • Where an M-2 lot fronts or sides on a street adjacent to residential/agricultural zones, maintain front and side yards not less than 50 ft; where adjacent to commercial/M zones, yards not less than 20 ft. Also maintain a 20‑ft landscaping strip along street frontage. § 17.56.030(A).
    • Operations must be enclosed by a solid, view‑obscuring masonry wall 6–8 ft high (exceptions for certain uses). § 17.56.030(B).
    • Ornamental open fences up to 8 ft are allowed in specified front/side yard areas for screening where permitted. § 17.56.030(A)(4).
  • Where it applies: All M‑2 parcels; many heavy uses additionally require CUP/development agreements (see Chapter 17.56). § 17.56.

M-1 (Light Manufacturing) and C-M (Commercial‑Manufacturing) — masonry walls and adjacent landscaping

  • Purpose: allow light industrial/commercial uses while protecting adjacent residential uses.
  • Key standards for M-1:
    • Maintain 20‑ft front/side yard where property fronts/sides a street; 20‑ft landscaping area along street frontage. § 17.52.020(A).
    • Where M‑1 abuts R or A zones, build and maintain a 6‑ft solid masonry wall and a 10‑ft wide landscaping strip adjacent to that wall. § 17.52.060.
  • Key standards for C‑M:
    • Maintain 20‑ft front/side yards where lot fronts or sides on a street, and a 20‑ft landscaping area on all street frontage; where abutting R/A zones, 20‑ft separation and 6‑ft solid masonry wall plus 10‑ft adjacent landscaping. § 17.48.020(A),(C).
  • Where it applies: M‑1 and C‑M zones; look to the zone‑specific chapter for exceptions and CUP requirements.

C (commercial) zones — screening where abutting residential

  • Purpose: protect residential neighbors from commercial activities visible from abutting lots.
  • Key standards:
    • Where commercial parking/loading/storage is visible from adjacent R/A property, provide view‑obscuring wall or fence not less than 6 ft in height measured from finished grade; no outdoor storage above the wall height. § 17.36.030 and related C‑zone development standards.
    • Parking areas for 5 or more vehicles abutting R zones must be separated by a solid view‑obscuring fence/wall 6 ft high, except along required front yards where limit is 36 inches. § 17.64.160.

R zones (R‑1, R‑2, R‑3 residential) — fence heights, plantings and internal landscaping

  • Purpose: provide residential open‑space, visibility, and safety rules.
  • Key standards:
    • General fence/wall height rules in R zones: 36 inches allowed in front yards; up to 6 ft elsewhere on interior lots (retaining walls exceptions exist). § 17.68.080(A).
    • Shrubs, flowers, plants and hedges not more than 36 inches and trees are permitted in required front yard areas. § 17.68.090.
    • Vision clearance triangle at street corners: no tree, fence or other obstruction above 42 inches in the required triangle (15 ft legs). § 17.68.050.
    • Multifamily (R‑3) and apartment rules: provide internal landscaping, and require a minimum 6‑ft‑high solid wall or view‑obscuring fence around recreation/pool/play areas and similar activity areas. § 17.24.080–17.24.090.

Special technical rules that affect landscape/screening submittals

  • Landscaping in industrial and commercial zones must include drought tolerant and low‑water plantings where specified; irrigation and sprinkler systems must comply with the City's plumbing code and be shown on plans. § 17.60.080(A)(1)(d,f) and § 17.68.120(C).
  • Site plan & design review submittals must include a landscaping and irrigation plan showing species, spacing, and size at three‑year growth, and identification of existing/removed trees. See the site plan application requirements before filing. § 17.70.040(B)(2) and related site‑plan rules.
  • Parking area interior landscaping minimum where >20 spaces: at least 2% of gross parking area devoted to interior landscaping; required landscaping must be irrigated and maintained. § 17.64.220(A)–(B).

Quick reference table — decision‑relevant standards

Topic Required or typical standard (Irwindale) Code Reference
Q overlay front setback (local streets / A/R/C adjacent) 50 ft (to top of slope) § 17.60.080(B)(1)
Q overlay front setback (major arterial) 100 ft § 17.60.080(B)(2)
Berms & chain link alternatives in Q Earthen berm ≥ 6 ft + 6‑ft chain link (or decorative block wall with conditions) § 17.60.080(B)(4), (C)
Landscaping strip along M‑1 / M‑2 / C‑M street frontage 20 ft minimum § 17.52.020(A); § 17.56.030(A); § 17.48.020(A)
Required masonry screening where abutting R/A 6 ft solid masonry wall + 10 ft adjacent landscaping (M‑1 / C‑M) § 17.52.060; § 17.48.020(C)
Parking area screen where abuts R 6 ft view‑obscuring fence/wall (36 in along front yard) § 17.64.160
Fence/wall height in R (front yard) 36 in front yard; up to 6 ft elsewhere on interior lots § 17.68.080(A)
Trees/shrubs allowed in front yards Shrubs/hedges ≤ 36 in; trees permitted § 17.68.090
Landscape plan submittal content Show species, spacing, size at 3‑year growth, irrigation details; stamped by landscape professional for Q uses § 17.70.040(B)(2); § 17.60.080(A)(1)

Checklist — what an applicant must include to meet Irwindale landscaping & screening requirements

  • Prepare and submit a full site plan and design review application per § 17.70.040 that includes a landscaping & irrigation plan showing species, spacing and sizes at three‑year growth.
  • For Q overlay projects, provide a landscape and irrigation plan prepared by a licensed landscape architect within 90 days of use‑permit approval and install landscaping within one year. § 17.60.080(A).
  • Show and dimension all walls, fences, berms, and their materials; confirm masonry wall dimensions and location where required (e.g., 6 ft adjacent to R/A or as specified by zone). § 17.52.060; § 17.48.020; § 17.56.030.
  • Provide irrigation plan (automatic irrigation where required) and demonstrate compliance with plumbing/irrigation code and drought‑tolerant plant choices. § 17.60.080(A)(d),(f); § 17.68.120(C).
  • For parking areas, show interior landscaping (min 2% if >20 spaces) and required screening where abutting R zones. § 17.64.220; § 17.64.160.
  • Verify vision clearance triangles at corners and keep obstructions below 42 in in those triangles. § 17.68.050.
  • If your use is a dismantling yard, quarry, M‑2 or other CUP use, confirm any additional landscaping or maintenance conditions in the CUP or development agreement (many require daily maintenance, dust control, and security berms/walls). See Chapter 17.56 and 17.60.
  • Prepare for maintenance/inspection obligations — many landscape and berm installations must be maintained and irrigated at all times. § 17.60.080(A)(1), § 17.68.120(E).

Risks & Ambiguities

Issue Why it matters What to verify
Exact fence/wall treatment for a specific lot (e.g., decorative vs. solid masonry) Code allows alternatives (e.g., berm + chain link vs. masonry) but approval needs city engineer / planning sign‑off Verify applicable requirement in the zone chapter and the project’s CUP or development agreement — confirm with planning staff (zone: M‑1/M‑2/C‑M/Q). Verify with the jurisdiction.
Species selection and proximity to utilities Some plant species are discouraged near utilities or maintenance areas; irrigation types affect maintenance and fire risk Confirm street tree and utility rules; include species list on plan and coordinate with city engineer and utility providers. Verify with the jurisdiction.
Which chapter controls where code and CUP/development agreement differ CUP or development agreement may impose more specific (and controlling) landscaping/screening conditions Review the CUP/development agreement text for your parcel; if conflict, the more stringent condition applies. § 17.60.015; § 17.56.025.
Interpretation of “height” measurements for walls and berms Code measures wall heights from finished grade; berms measured to top of slope — grade changes can change compliance Provide sections and elevation drawings on site plan and check grading permits with city engineer. Verify with the jurisdiction.
Applicability to parcels in redevelopment / special planning areas Some CRA or redevelopment plans may set different setbacks/landscaping requirements Check whether the parcel lies in a redevelopment area or has a project plan. Verify with the jurisdiction.

Plain‑English summary

In Irwindale you must submit a site plan with a landscaping and irrigation plan (showing plant species and size at three‑year growth) as part of design review; industrial and quarry uses (the Q overlay and M zones) face the strictest buffering rules (wide landscaping strips, berms, and 6–8 ft masonry walls) while residential rules limit front‑yard fences to 36 in and allow shrubs up to 36 in in front yards. Always show walls/fences, irrigation and maintenance on your site plan and check for CUP or overlay conditions that may be stricter. Verify parcel‑specific conditions with planning staff.

Source References

  • § 17.60.080 (Q overlay — landscaping, berms, irrigation, front yard depths)
  • § 17.60.010 / § 17.60.015 (Q overlay uses and on‑site management)
  • § 17.56.030 / § 17.56.040 (M‑2 buffering, landscaping strips, walls/fences)
  • § 17.52.020 / § 17.52.060 (M‑1 landscaping and masonry wall where abutting R/A)
  • § 17.48.020 (C‑M zone landscaping/adjacent residential requirements)
  • § 17.64.160 / § 17.64.220 (parking area screening and interior landscaping minimums)
  • § 17.70.010 / § 17.70.030 / § 17.70.040 / § 17.70.050 / § 17.70.060 / § 17.70.070 (site plan & design review application requirements and findings; landscaping plan content; review/expiration)
  • § 17.68.080 / § 17.68.090 / § 17.68.120 / § 17.68.130 (R‑zone fence/wall heights, shrubs/trees in front yard, C‑M/M zone landscaping rules, minimum setbacks)
  • § 17.24.080–17.24.090 (multifamily landscape, fences/screens for pools and recreation areas)

Also review the City of Irwindale public pages for related topics: Irwindale Zoning, Irwindale Land Use, Irwindale Development Standards, Irwindale Parking, Irwindale Design Review, Irwindale Overlay Districts, Irwindale ADUs, and the California Building Standards Code for separate building/structural requirements. (Internal links used in‑text where relevant.)

Sources

Retrieved passages

  • Irwindale Zoning Code (§ 2) High relevance
  • Irwindale Zoning Code (§2) High relevance
  • Irwindale Zoning Code High relevance
  • Irwindale Zoning Code High relevance
  • Irwindale Zoning Code High relevance
  • Irwindale Zoning Code (§ 2) High relevance
  • CPC § 1 (section and) High relevance
  • CPC § 2 (§ 2) High relevance
  • Irwindale Zoning Code (§ 2) Medium relevance
  • Irwindale Zoning Code (§ 2) Medium relevance
  • Irwindale Zoning Code (§ 1) Medium relevance
  • Irwindale Zoning Code (§ 1) Medium relevance
  • Irwindale Zoning Code (Chapter 17.56) Medium relevance
  • Irwindale Zoning Code (Section 17.70.070) High relevance
  • Irwindale Zoning Code (§2) Medium relevance
  • Irwindale Zoning Code (Section 17.70.050) Medium relevance
  • Irwindale Zoning Code (§ 3) Medium relevance
  • CFC § 5 (section or) Medium relevance

Cited sections

Frequently asked questions

What landscaping must I show on a site‑plan submittal for Irwindale?

Show a full landscaping and irrigation plan with species, spacing and sizes as they will appear at three years, show street trees, existing trees to be retained/removed, and irrigation details. This is required in the site plan submittal checklist under § 17.70.040(B)(2).

Are there special rules for landscaping on quarry or “Q overlay” sites in Irwindale?

Yes. Q overlay projects must submit a landscape and irrigation plan by a licensed landscape architect within 90 days of use‑permit approval and install landscaping within one year. Plans must show berm contours, storm drainage, species/size/location, automatic irrigation, dust control and drought‑tolerant plantings. § 17.60.080(A).

What fence and wall heights are allowed in residential front yards in Irwindale?

In R zones a wall, fence or hedge up to 36 inches is allowed in front yards; interior lots may have walls/fences up to 6 ft outside required front yard areas (retaining walls have special rules). § 17.68.080(A).

If my commercial parking lot abuts a residential zone, what screening is required?

A parking area designed for five or more vehicles abutting an R zone must be separated by a solid view‑obscuring fence or wall 6 ft high, measured from parking lot grade; along required front yard the wall is limited to 36 inches. § 17.64.160.

Does Irwindale require a minimum width for landscaping along industrial/commercial street frontage?

Yes. M‑1, M‑2, and C‑M zone standards generally require a 20‑ft landscaping strip along street frontage (some M‑2 circumstances differ when adjacent to R/A). See § 17.52.020(A), § 17.56.030(A) and § 17.48.020(A).

Are earthen berms allowed instead of walls in the Q overlay?

Yes; the Q overlay contemplates earthen berms (≥ 6 ft) with landscaping and an irrigation system as an option, and a 6‑ft chain link fence is often paired with berming unless a decorative block wall is approved. See § 17.60.080(B)(4) and § 17.60.080(C).

When do I need a licensed landscape architect to prepare plans for Irwindale?

The code requires a landscape and irrigation plan prepared by a licensed landscape architect for certain use‑permit approvals in the Q overlay (submit within 90 days). Other projects should follow site plan guidelines; check § 17.60.080(A)(1) and § 17.70.040 for submittal content.

What are the rules for trees and shrubs in the front yard for homes?

Shrubs, flowers, plants and hedges not more than 36 inches in height and trees are allowed in a required front yard (R zones). Keep sight‑triangle rules in mind at corners (no obstruction > 42 in in the triangle). § 17.68.090; § 17.68.050.

Do site plans have to show irrigation details?

Yes — irrigation must be shown. Sprinkler systems adequate to irrigate required landscaped areas are required and must comply with plumbing code; site plan guidance requires irrigation detail on the landscape plan. § 17.68.120(C); § 17.70.040(B)(2).

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