Norwalk — Landscaping and Screening

Last reviewed: July 2, 2026

Overview

This page summarizes what the Norwalk Municipal Code requires for landscaping, screening, fences, walls, and trees in each local zoning district and specific-plan area. It draws only from the city zoning ordinance text (Title 17 and related specific-plan articles) and points you to the exact controlling code sections so you (or your designer) can apply the rules to a real site. Expect required landscape plans, minimum planted area/irrigation, screening heights for parking and open storage, and mandatory review/approval of wall/fence designs by the Director or Planning Commission. For related topics see the city's pages on Norwalk Zoning, Norwalk Parking, Norwalk Development Standards, Norwalk Design Review, Norwalk Overlay Districts, and Norwalk ADUs.

Notes up front: when the Code gives a numerical standard (landscape %, wall height, tree spacing) it almost always ties that number to a particular zone or specific-plan section — there is not a single universal landscape table that applies to every parcel. Verify which zone or specific plan applies to your parcel before designing. Where the municipal text refers to separate chapters (for example water-efficiency or signs) those chapters also apply. The city's references to the state code and the requirement to follow water-efficiency rules mean you should also review the Water Efficient Landscape ordinance called out in the Code and the California Building Standards Code when work touches Title 24 items.

How the ordinance treats landscaping & screening (by district / plan)

Below are the principal Norwalk zoning districts and specific-plan areas that contain explicit landscape/screening standards in Title 17. Each subsection lists the purpose/typical uses, the most decision-relevant landscaping/screening rules, and the local code citations you must check.

R zones (single- and multi-family residential — R-1, R-2, R-3, R-H, R-4)

Purpose & typical uses: residential neighborhoods; single- and multifamily dwellings.
Key landscaping/screening standards:

• Multi‑family developments must provide a minimum of 20% of the development site landscaped and all landscaped areas must have a permanent irrigation system; one specimen tree per dwelling unit is required in many multi-family plan sections (§ 17.03.010) .
• Front yards adjacent to streets are limited in the amount of hardscape; structural features (walkway arches, walls, fences) in required yards are subject to height limits and Director approval (§ 17.03.010) .
  Where it applies: all properties with an R zoning designation and multi-family projects citywide. Verify local precise-development or specific‑plan overlays for additional or different requirements. See also site‑planning and mixed‑use buffering rules at § 17.04.535 for buffering between commercial and residential uses (§ 17.04.535) .

C and O / P-O commercial and office zones (including C-O and P/O)

Purpose & typical uses: retail, offices, service commercial.
Key landscaping/screening standards:

• Commercial projects must be “conducted wholly within a building” except parking; where surface parking exists, landscape islands, street setback landscaping, and perimeter plantings are required (references to Chapter 17.03 landscaping standards) (§ 17.09.* and § 17.03.010) .
• Surface parking visible from a public street must be screened to 42 inches using a landscaped berm, solid wall, solid fencing, shrubs, or trellis with plants (§ 17.04.535) .
  Where it applies: citywide commercial corridors; check whether your site falls into a specific plan or PF/public‑facilities overlay for modified rules.

Public Facilities overlay — PF

Purpose & typical uses: civic buildings, public plazas, major public-service uses.
Key landscaping/screening standards:

• Required front and street‑facing yard areas may only be used for landscaping, fences and walls (height limits listed below), and driveways (§ 17.08.*) .
• Parking shall include a minimum five‑foot strip of landscaping separating parking areas from streets (§ 17.04.190) .
• A solid masonry wall six feet high is required where a PF use abuts residential zones, except reduced height (3.5 ft) where it adjoins front yards of residential zones or as modified for safety (§ 17.04.190) .
  Where it applies: properties in the PF overlay; the PF article is an overlay so it augments the underlying zone (§ 17.04.* / § 17.08.*) .

Open Space — O‑S

Purpose & typical uses: parks, low‑intensity open uses.
Key landscaping/screening standards:

• Landscaping, exterior lighting, walls, fences and screen planting must be designed to be compatible with the O‑S character; required 20‑ft front, side, and rear yards may only be used for landscaping, fences/walls, and driveways (§ 17.08.100–140) .
  Where it applies: parcels zoned O‑S (check § 17.08.*) .

Industrial — M‑1, M‑2

Purpose & typical uses: light and heavy industrial.
Key landscaping/screening standards:

• Open storage and outdoor work areas must be substantially screened from public visibility and from adjacent residential/commercial zones, typically by a solid masonry wall not less than six feet high; landscaping may be accepted as a screening alternative through a CUP (§ 17.09.* / industrial-use rules) .
• When industrial abuts residential zones, a five‑foot setback is required for commercial/industrial zoning abutting residential areas (see Article for buffer widths) (§ 17.09.*) .
  Where it applies: M‑1 and M‑2 properties and any commercial/industrial lot abutting R zones.

Specific Plan areas (examples: Specific Plan Area No. 9, No. 11, No. 12)

Purpose & typical uses: tailored master plans that override or supplement base zoning. Each plan contains its own landscaping and fencing rules. Representative rules:

• Many specific plans require a landscape and irrigation plan prepared by a licensed landscape architect, automatic irrigation, specimen‑tree minimums (often one specimen tree per dwelling unit or 1 per 2,000 sq ft of GFA for commercial/hotel uses), and minimum landscaped setbacks (for example 20 ft minimum along certain frontages, or 24‑inch box trees spaced at 20‑ft intervals) (§ 17.09.1370–1390; § 17.09.1530) .
• Walls and fences are often required to be decorative masonry and of specified minimum heights (6–8 ft in many specific-plan provisions), with gate and trash‑enclosure design subject to Director/Planning Commission approval (§ 17.09.) .
  Where it applies: the parcel-map for the specific plan (check the plan's Exhibit “A” map in the Code to see if your property is in the plan) (§ 17.09.) .

Quick standards & examples (decision‑focused table)

Practical guidance / synthesis (plain-English application)

• Start your design assuming you must submit a full landscape and irrigation plan signed by a licensed landscape architect (this appears repeatedly across the municipal code and specific plans) — the Director reviews and approves it (§ 17.03.010; see specific plans) .
• For parking lots visible from streets, budget for 42‑inch screening (choose between berms, solid wall, fencing, shrubs, or trellis) so your site meets the screening test rather than trying to argue exception later (§ 17.04.535) .
• If your property borders residential zoning, expect a masonry wall (commonly 6 ft) and/or landscaped buffer; many sections require a solid masonry wall unless a landscape alternative is approved (§ 17.04.190) .
• Specific plans often impose stronger requirements (e.g., 24‑inch box trees at 20‑ft spacing, decorative block walls, minimum landscape widths) — check the specific‑plan section that covers your parcel before laying out parking or loading (§ 17.09.1530) .
• Minor deviations (administrative adjustments) exist: the Director may allow up to 20% deviation for some landscape requirements via administrative approval, but confirm the thresholds in § 17.02 and § 17.03.010 before assuming flexibility .

Checklist

• Determine the parcel’s base zone and any specific plan or PF overlay that applies; confirm in the municipal map.
• Prepare a landscape & irrigation plan signed by a licensed landscape architect showing plant lists, containers, quantities, irrigation schematic, and maintenance provisions (§ 17.03.010) .
• Show required screening for parking / open storage (e.g., 42 in screening) and any 6 ft masonry wall if abutting residential (§ 17.04.535, § 17.04.190) .
• Identify specimen‑tree counts and minimum container/box sizes (e.g., 24‑inch box) and place them where required by the applicable specific plan (§ 17.03.010, § 17.09.1530) .
• Plan for permanent irrigation (automatic system) and water‑efficiency compliance as required; reference the City’s Water Efficient Landscape ordinance (§ 17.03.020) .
• Submit wall/fence designs for Director or Planning Commission approval where the Code requires it (§ 17.03.300 and various specific‑plan subsections) .
• If your site requests deviations, prepare justification for an administrative approval (note the Code allows certain percentage deviations for landscaping) (§ 17.02 / administrative approval rules) .

Risks & Ambiguities

Plain-English summary

Norwalk requires a professional landscape plan with permanent irrigation, minimum planted area and specimen trees for multi‑family and many commercial projects, and specific screening (including 42‑inch screens for street‑visible parking and 6‑foot masonry buffers where commercial/public uses abut residential). Wall/fence design and many landscape deviations must be approved by the City (Director or Planning Commission) — check the base zone and any specific plan that covers your parcel before finalizing design. See the municipal code sections cited below for the exact text.

Source References

• Municipal Code — landscape materials, front yards, and permitted yard uses: § 17.08.110 (O‑S front yard rules)
• Municipal Code — multi‑family landscaping and water efficiency references: § 17.03.010 (landscape plan, specimen trees, irrigation)
• Municipal Code — administrative approvals and allowed deviations for landscape requirements: § 17.02 / administrative approval rules and reference to Section 17.03.010 deviations
• Municipal Code — PF zone buffering and landscaping provisions (masonry wall, parking landscaping): § 17.04.190 (PF limitations and landscaping)
• Municipal Code — site planning / parking screening (42" screening, acceptable methods): § 17.04.535 (site planning standards)
• Specific plan examples (landscaping, walls, specimen trees, spacing): § 17.09.1530 (Specific Plan Area No. 12 development standards)
• Specific plan landscaping and wall/fence design requirements referenced throughout the Specific Plan articles (§ 17.09.*)
• Additional site-specific landscaping examples: Multiple specific-plan subsections requiring plan approval, specimen tree counts, and decorative masonry walls (§ 17.09.; § 17.08.)

Retrieved passages

• Norwalk Zoning Code High relevance show source text
• Norwalk Zoning Code (§ 27-4.3) High relevance show source text
• Norwalk Zoning Code High relevance show source text
• Norwalk Zoning Code (Section 17.03.010.H.) High relevance show source text
• Norwalk Zoning Code High relevance show source text
• Norwalk Zoning Code (§ 27-3.2) High relevance show source text
• Norwalk Zoning Code (Article IV) High relevance show source text
• Norwalk Zoning Code (article in) High relevance show source text

Cited sections

• Municipal Code — landscape materials, front yards, and permitted yard uses: § **17.08.110** (O‑S front yard rules)
• Municipal Code — multi‑family landscaping and water efficiency references: § **17.03.010** (landscape plan, specimen trees, irrigation)
• Municipal Code — administrative approvals and allowed deviations for landscape requirements: § **17.02** / administrative approval rules and reference to **Section 17.03.010** deviations (Section 17.03.010)
• Municipal Code — PF zone buffering and landscaping provisions (masonry wall, parking landscaping): § **17.04.190** (PF limitations and landscaping)
• Municipal Code — site planning / parking screening (42" screening, acceptable methods): § **17.04.535** (site planning standards)
• Specific plan examples (landscaping, walls, specimen trees, spacing): § **17.09.1530** (Specific Plan Area No. 12 development standards)
• Specific plan landscaping and wall/fence design requirements referenced throughout the Specific Plan articles (§ 17.09.*) (§ 17.09.)
• Additional site-specific landscaping examples: Multiple specific-plan subsections requiring plan approval, specimen tree counts, and decorative masonry walls (§ 17.09.*; § 17.08.*) (§ 17.09.)
• Norwalk_ZoningCode.md

• Official Norwalk code library