Local zoning · Yorba Linda

Yorba Linda — Landscaping and Screening

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

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Last reviewed: July 3, 2026

Overview

This page summarizes what the Yorba Linda Zoning Code (Title 18) requires for landscaping, screening, fences/walls, trees, and parking-lot plantings. It is strictly drawn from the City code: key performance standards are in Chapter 18.28 (Landscaping Standards), screening/fence rules are in Chapter 18.26, parking-landscaping rules are in Chapter 18.22, and zone-specific requirements appear in the individual district chapters (residential, commercial, MHP, PD, PL, OS/OSR). Where the code delegates process steps — plan submittal, design review or administrative adjustments — those processes are referenced below. For related documents see the City parking rules at Yorba Linda Parking, development standards at Yorba Linda Development Standards, and design review procedures at Yorba Linda Design Review. For overlay rules and ADU context see Yorba Linda Overlay Districts and Yorba Linda ADUs. Where building-code overlap is possible, verify with the California Building Standards Code.

What the Code Requires (by topic — code citations and plain-English interpretation)

  • Landscape plan submittal and reviewers — Final landscape and irrigation plans must follow the city's "Yorba Linda Guidelines and Specifications for Landscape Development" and be prepared by a Landscape Architect or other State-licensed preparer; final plans must be approved by the City Landscape Architect before installation (see § 18.28.040).

  • Design & performance goals — Landscape design must emphasize water conservation, drought-tolerant species, irrigation efficiency, preservation of healthy existing trees, solar access, erosion control and "heat-island" mitigation (trees in large paved areas). For screening the plan should aim for 75% effective visual screening within five years by plant size and spacing selection (see § 18.28.030 and § 18.28.050).

  • Irrigation — Irrigation design must comply with the City's landscape guideline documents and be acceptable to the City landscape architect (see § 18.28.060).

  • Plant material sizes (specimen vegetation) — Minimum and preferred container sizes are specified (trees: minimum 15-gallon, preferred 24" box; shrubs: min 1-gallon; groundcover: 1" pot, etc.) in § 18.28.070.

  • Landscape maintenance — All required landscaping must be kept healthy and maintained; irrigation systems must be kept in working order and repairs made quickly (see § 18.28.040 and § 18.28.090).

  • Screening of equipment, trash, rooftop and parking — Mechanical equipment, rooftop equipment (except compliant solar panels), and trash enclosures must be screened architecturally and/or with walls and landscaping; trash enclosures for multi‑use properties must be screened by a six‑foot wall and a solid gate (see § 18.26.080 and § 18.26.070).

  • Fence & wall height and front-yard limits — Typical limits: fences/walls in required front yards are limited to 36 inches (3 ft); side/rear yard walls may be up to 6 feet; there are rules for nine‑foot maximum faces and special allowances for terraced retaining walls (see § 18.10.130, § 18.14.080, and § 18.26.090). Electrified fences and barbed/razor wire are prohibited in residential zones. Measure height from lowest finished grade to top of wall (see § 18.10.130 and § 18.26.090).

  • Perimeter walls for developments — Perimeter walls for multi‑lot developments are commonly required at a minimum of six feet and subject to decorative standards and Planning Commission review (see § 18.26.100).

  • Parking-lot landscaping (trees and planter minimums) — Off-street parking areas must provide landscaped area equal to at least 20 sq ft per parking space, with at least one 15-gallon tree per five spaces and additional interior trees by area; planter island dimensions and irrigation/maintenance rules are spelled out in Chapter 18.22 (parking) standards. Cite: § 18.22 (Parking lot landscaping & planters).

  • Screening between uses / buffers — When a commercial (C) or office use abuts any residential zone the code requires increased setbacks and a constructed screen: a minimum building setback and a masonry wall six feet in height plus screen landscaping at least 15 feet wide between the commercial and residential uses (see § 18.12.080(B)).

  • Hillsides, retaining walls and slope planting — Retaining walls visible from off‑site should be kept to six feet and planted with vines/landscape; where taller retaining walls are required, the Planning Commission may approve tiers of walls with landscaped terraces between them (see § 18.30.040(B)).

  • Design review and conditional review — Large projects, subdivisions, multi‑family projects, mobile home parks, and many commercial projects require design review and must submit landscape plans as part of that review (see § 18.36.110 and plan content requirements § 18.36.120).

District-by-district (how landscaping & screening rules are applied)

Note: the City’s zoning map and the zone names listed here come from § 18.08.020. Verify parcel zoning and overlays with the Community Development Department on specific projects.

R-A, RLD, R-E, R-S, R-U, R-M, R-M-20, R-M-30 (Residential districts)

  • Purpose: residential living at varying densities (see § 18.08.020 for zone list).
  • Typical permitted uses: single‑family homes, multi‑family (R‑M variants), accessory structures — governed by the tables in the residential chapter and Table 18.10-02.
  • Landscaping highlights:
    • All residential zones: front and street‑side yards must be landscaped to a minimum of 51% plant materials (except necessary walks, drives, fences) and landscaping for new homes must be installed within 12 months of final CO; artificial turf may be approved under standards (see § 18.10.110(C)).
    • R‑M / R‑M‑20 / R‑M‑30: a minimum 50% of the building site area (exclusive of private patios and building footprints) must be landscaped and provided with underground irrigation; 50% of landscaped area should accommodate active uses (BBQ, playgrounds, seating) (see § 18.10.110(C)(2–3)).
  • Screening & equipment: mechanical equipment must be screened per § 18.26.080; fences/walls in front yards are limited to 36 in unless otherwise approved (see § 18.10.130 and § 18.26.080).
  • Where it applies: all residential parcels citywide; projects subject to design review must include landscape screens in the design submittal § 18.36.120.

C zones (Commercial: C-O, C-N, C-G)

  • Purpose: neighborhood, office, and general commercial uses. See zone list § 18.08.020.
  • Key landscaping/screening standards:
    • Required front and street-side yards must be landscaped to a depth of not less than 10 ft (or 25 ft front / 15 ft side when adjacent to an arterial/collector) (performance standards in § 18.12.080(A)).
    • When abutting residential: minimum building setback 50 ft plus a masonry wall six feet high and landscape buffer at least 15 ft wide between commercial and residential uses (see § 18.12.080(B)).
    • Parking-lot landscape rules (planters, trees, 20 sq ft per space) from Chapter 18.22 apply to commercial parking lots.

MHP (Mobile Home Park)

  • Purpose & standards: dedicated mobile home park rules and site standards (minimum site area, setbacks) appear in Article 1 of Chapter 18.16; required yards and perimeter screening must follow a site development plan and Design Review (see § 18.16.040 and § 18.16.060). Decorative six‑foot masonry walls for maintenance/storage areas are specifically required (see § 18.16.060).

PD (Planned Development)

  • Purpose: large coordinated projects; landscaping and perimeter walls are set as part of the PD plan and are subject to Design Review and Planning Commission approval (see § 18.16.100 and PD development text).

PL (Presidential Library) and Special Purpose Zones

  • PL has specific development standards and expressly allows walls/fences beyond ordinary height limits subject to review (see § 18.16.320). Open space zones (OS/OSR) prioritize preservation of natural landscape and limit development; where development occurs, hillside and slope landscaping rules apply (see § 18.16.400 and § 18.30.040).

Quick Reference Table — most decision‑relevant standards

Topic Key rule Code Reference
Residential front/street‑side landscaping Minimum 51% plant materials in front/street-side yards (new homes: install within 12 months) § 18.10.110(C)
Multi‑family site landscaping Minimum 50% of building site landscaped (R‑M, R‑M‑20, R‑M‑30) § 18.10.110(C)(2)
Parking lot landscaping 20 sq ft landscaped per parking space; 1 15‑gal tree per 5 spaces; interior trees by area § 18.22 (parking/landscaping)
Commercial buffer to residential 50 ft setback; 6 ft masonry wall + 15 ft landscape buffer § 18.12.080(B)
Screening of mechanical/trash/roof equipment Must be architecturally integrated, screened; rooftop equipment screened (solar panel exceptions) § 18.26.080
Fence/wall front yard limit Front yard fences/walls: max 36 in; side/rear max 6 ft (exceptions via administrative adjustment/variance) § 18.10.130 & § 18.26.090
Specimen plant sizes Trees min 15 gal, preferred 24" box; shrubs min 1 gal § 18.28.070
Landscape plan submittal Final plans must follow city specs; prepared by licensed landscape architect; approval needed before installation § 18.28.040

Checklist — what an applicant must satisfy (pre‑application → installation)

  • Check parcel zoning and overlays (verify with Community Development) — see § 18.08.020.
  • Confirm whether project triggers Chapter 18.28 landscape requirements or is exempt (single‑family residence and small projects may be exempt) — see § 18.28.020.
  • Prepare conceptual and final landscape & irrigation plans per § 18.28.040 and the "Yorba Linda Guidelines and Specifications for Landscape Development" — final plans to be prepared/endorsed by a Landscape Architect.
  • Show plant palette, specimen sizes, irrigation zones, and maintenance plan (use § 18.28.070 & § 18.28.090 guidance).
  • If project has parking, size parking-lot planters to meet the 20 sq ft/space rule and tree counts — see § 18.22.
  • For screening (equipment, trash, rooftop), show architectural screening/walls and planting on plans per § 18.26.080 and § 18.26.070.
  • For front-yard fences/walls show compliance with 36 in height (or seek administrative adjustment/variance) — cite § 18.10.130/§ 18.26.090.
  • If on slopes/hillsides, include retaining wall terraces and planting to meet § 18.30.040 rules.
  • Expect Design Review submittal if project type requires it (multi‑family, commercial, subdivisions) — see § 18.36.110/§ 18.36.120.

Risks & Ambiguities

Issue Why it matters What to verify
Front‑yard fence height on sloped lots Height measured from lowest finished grade can make a compliant wall appear taller on the uphill side; irregular grade may trigger administrative adjustment Verify grade measurement points and request an administrative adjustment if needed; cite § 18.10.130 for measurement methodology.
Screening requirement when commercial abuts residential The code mandates a 6‑ft masonry wall + 15‑ft buffer — big cost and affects site layout Confirm whether your parcel abuts an R zone and whether the buffer area counts toward setbacks/parking; see § 18.12.080(B).
Artificial turf substitution Allowed only with Community Development Director approval and strict warranty/installation/planting ratio requirements If proposing turf, prepare a submittal package per § 18.10.110(C)(6) and get written Director approval.
Tree preservation vs OCFA Fuel Modification Native/large trees encouraged to be preserved, but fuel‑mod zones require defensible space and may limit species or placement Check Orange County Fire Authority fuel modification rules and note the code requires compliance for fire‑prone areas § 18.28.050(A).
Parking‑lot landscape tradeoffs Required planter area (20 sq ft/space) cannot be satisfied by perimeter setbacks alone; affects parking counts Verify planter calculation and whether required setback landscaping can/cannot be double‑counted per § 18.22.
Retaining wall height and terraces Hillside standards limit visible retaining walls to 6 ft and allow tiers only with landscaped terraces — affects grading design and approvals If >6 ft walls needed, anticipate Planning Commission review under § 18.30.040(B).

Plain‑English summary

Yorba Linda requires meaningful, water‑efficient landscaping and clear screening: front yards in homes must be mostly planted, parking lots must include planters and trees, mechanical equipment and trash areas must be screened, and fences/walls are tightly limited in front yards (36 in) with side/rear usually up to 6 ft — special buffers apply where commercial touches residential. All significant landscape plans must be prepared and approved per the City's landscape standards. Key rules live in Chapter 18.28 (landscaping), Chapter 18.26 (screening and fences), Chapter 18.22 (parking landscaping), and the district chapters cited above — verify specific parcel impacts with the City.

Source References

  • § 18.28.010–090 (Chapter 18.28, Landscaping standards — purpose, applicability, procedures, design standards, irrigation, specimen sizes, maintenance)
  • § 18.28.040 (Plan submittal and licensed preparer requirement)
  • § 18.28.050 (Landscape design standards; 75% screening goal)
  • § 18.28.060 (Irrigation system design)
  • § 18.28.070 (Specimen vegetation Table 18.28‑1)
  • § 18.28.090 (Landscape maintenance standards)
  • § 18.26.080 (Screening — mechanical, rooftop, ground equipment)
  • § 18.26.070 (Trash enclosure screening & required walls/gates)
  • § 18.26.090 (Fences, walls, hedges; height/vision triangle)
  • § 18.10.130 (Residential fence/wall height provisions, front yard height limit)
  • § 18.12.070–080 (Commercial zone performance standards; buffer when C abuts R)
  • Chapter 18.22 (Parking lot design and landscaping — 20 sq ft per space, tree counts; see chapter text)
  • § 18.30.040 (Hillside development: retaining walls, terraces, planting)
  • § 18.36.110 / § 18.36.120 (Design review purpose and plan submittal requirements)
  • Zoning map and zone names: § 18.08.020 (list of zones: R‑A, RLD, R‑E, R‑S, R‑U, R‑M, RM‑20, RM‑30, C‑O, C‑N, C‑G, M‑1, MHP, PD, PL, OS/OSR).

Sources

Retrieved passages

  • Yorba Linda Zoning Code (§ 3) High relevance
  • Yorba Linda Zoning Code High relevance
  • Yorba Linda Zoning Code (§ 18.12.080.) High relevance
  • Yorba Linda Zoning Code High relevance
  • Yorba Linda Zoning Code (§ 3) High relevance
  • CBC § 3 (§ 3) High relevance
  • Yorba Linda Zoning Code (§ 3) High relevance
  • Yorba Linda Zoning Code (§ 3) High relevance
  • Yorba Linda Zoning Code High relevance
  • Yorba Linda Zoning Code (chapter conflict) High relevance
  • Yorba Linda Zoning Code (§ 9) High relevance
  • Yorba Linda Zoning Code (§ 3) High relevance
  • Yorba Linda Zoning Code (title shall) High relevance
  • Yorba Linda Zoning Code (§ 3) High relevance
  • Yorba Linda Zoning Code (title shall) Medium relevance
  • Yorba Linda Zoning Code (§ 3) Medium relevance
  • CBC § 500 Medium relevance
  • Yorba Linda Zoning Code (Section 18.10.120.B.) Medium relevance
  • Yorba Linda Zoning Code Medium relevance
  • Yorba Linda Zoning Code (Title 18.) Medium relevance
  • Yorba Linda Zoning Code (§ 3) Medium relevance
  • Yorba Linda Zoning Code (Chapter 18.02.) Medium relevance
  • Yorba Linda Zoning Code (§ 1) Medium relevance

Cited sections

Frequently asked questions

What landscaping is required in Yorba Linda front yards?

Front and street‑side yards in all residential zones must be landscaped with a minimum 51% plant materials (excluding necessary walks, drives, fences); new homes must install that landscaping within 12 months of final certificate of occupancy. See § 18.10.110(C).

How much landscaping is required for multi‑family (R‑M) sites?

For R‑M, R‑M‑20 and R‑M‑30 zones a minimum 50% of the building site area (exclusive of private patios and footprints) must be landscaped, with 50% of that landscaped area designed for active uses such as BBQs or playgrounds. See § 18.10.110(C)(2–3).

Are there rules for parking‑lot trees and planters?

Yes. Off‑street parking areas must provide landscaped area equivalent to at least 20 square feet per parking space, include one minimum 15‑gallon tree per five spaces, and provide additional interior trees by square footage; planter island sizes and irrigation are specified in Chapter 18.22. See § 18.22.

What must I show to screen mechanical equipment or rooftop units?

All roof‑mounted and ground equipment must be architecturally screened and the screening must be compatible with the building design; ground‑level screening should include landscaping when feasible — see § 18.26.080.

How tall can my fence or wall be in the front yard?

Front‑yard fences/walls are generally limited to 36 inches (3 ft). Side and rear yard walls typically may be up to 6 feet; measurement is from lowest finished grade to top of wall; exceptions are available via administrative adjustments or variances. See § 18.10.130 and § 18.26.090.

If a commercial lot touches a residential lot, what screening is required?

When a commercial/office use abuts a residential zone, the code requires a minimum 50‑ft setback, a masonry wall six feet in height, and screen landscaping at least 15 feet wide between uses (see § 18.12.080(B)).

Do hillside lots have different landscaping or retaining‑wall rules?

Yes. Retaining walls visible off‑site should be limited to six feet and planted with vines or screening; if higher walls are necessary, the Planning Commission can approve tiers of walls with landscaped terraces per § 18.30.040(B).

Do I need Design Review to get my landscape plan approved?

If your project is a single‑family subdivision, multi‑family development, mobile home park, commercial or industrial establishment, Design Review is required and landscape/screening details must be included in the submittal per § 18.36.110 / § 18.36.120.

Can I use artificial turf in front yards?

High‑quality artificial turf may be allowed in lieu of live turf for residential front and street‑side yards only with prior written approval from the Community Development Director and subject to standards (installation, warranty, min. living plant percentage). See § 18.10.110(C)(6).

What plant sizes does the City expect when showing trees/shrubs?

The code identifies specimen sizes (minimum and preferred): Trees minimum 15‑gallon (preferred 24" box), shrubs min 1‑gallon, groundcover, flowers, and turf size guidance in § 18.28.070 (Table 18.28‑1).

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