Local zoning · Orange County

Orange County — Landscaping and Screening

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

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Last reviewed: July 6, 2026

Overview

This page explains how the County of Orange’s Comprehensive Zoning Code (Title 7, Division 9, Article 2) regulates landscaping, fencing, walls, and visual screening in the unincorporated areas. These are countywide development standards that interact with each zoning district’s supplemental rules and with the County’s Landscape Irrigation Code. For a broader context, see the county’s zoning overview, the base Zoning districts, and cross-cutting Development Standards.

Core rule in plain English: When a site in a nonresidential district abuts a residential or agricultural zone in the unincorporated areas, you must build and maintain a 6-foot-tall opaque screen along that boundary; walls, berms, fences, or hedges may be used if they fully block views. See § 7-9-71.1(a)–(b) .

Countywide standards that apply in most districts

  • Opaque boundary screening at res/ag edges. Nonresidential premises must install and maintain an opaque 6-foot screen where they abut residential or agricultural zoning; allowed screen types include solid masonry walls, landscaped earthen berms, solid fences, open fences combined with plant materials, or evergreen hedges that form a 2-foot-wide opaque screen within 18 months; irrigation is required for living screens. No signs may be placed on required screening (§ 7-9-71.1(a)–(c)) .
  • Boundary landscaping along streets. Where district rules require landscaping, provide boundary landscaping along street-abutting property lines to a depth equal to the required setback or 10 feet, whichever is less; landscaped areas must be separated from parking/drive aisles by a curb or wall at least 6 inches high; permanent irrigation and ongoing maintenance are required (§ 7-9-71.2(a)–(e)) .
  • Landscape Irrigation Code. Landscape projects that fall under the County’s Landscape Irrigation Code must submit a Landscape Documentation Package and obtain a Certificate of Completion; see §§ 7-9-68, 7-9-68.1, 7-9-68.2, 7-9-68.3, and 7-9-68.4 for applicability and submittals (§ 7-9-68; § 7-9-71.2(f)) .
  • Fences, walls, and hedges in setback areas. Within required front setbacks, the maximum height is 3.5 feet for solid fences and 5 feet for open fences/pilasters; chain link is prohibited in front setbacks. Along side/rear setbacks abutting a street (with no driveway access), the maximum is 6 feet (§ 7-9-64(b)(1)–(4)) . Fence/wall height is measured from the base to the top on the higher side; special rules apply to fences on retaining walls (§ 7-9-64; see also how fence height is measured on retaining walls in front setbacks) (§ 7-9-24.10(b)) .
  • Parking lot landscaping and screening. Shade trees must be distributed throughout parking areas: a tree at the end of each aisle and at intervals so no more than six adjacent spaces occur between planters; planters must be at least 25 square feet (not counting the 6-inch curb), and new trees must be 15-gallon minimum. Open parking and parking structures must be screened adjacent to street rights-of-way and where streets separate parking from res/ag districts (§ 7-9-70.4(f)–(g)) . For more, see Parking.
  • Drive-through aisle screening in commercial uses. Drive-through lanes must be screened with a combination of decorative walls and landscaping to a height of 36 inches to prevent headlight glare; additional screening/landscaping may be required to protect adjacent residential districts (§ 7-9-111(a), (f)) .

Also remember: Landscaping within public viewsheds or special areas may be further constrained by overlays; verify applicable Overlay Districts. If a discretionary approval is involved, consult Design Review.

District-by-district application in unincorporated areas

Single-Family Residential Districts (e.g., AR, E1)

  • Purpose and typical uses. The Single-Family Residential districts provide for low-density single-family neighborhoods and related neighborhood-serving facilities such as schools, childcare, community assembly, open space, trails, and parks (§ 7-9-31.1(a)–(b)) .
  • Key dimensional/landscape rules. Fences/walls/hedges follow § 7-9-64; landscaping and irrigation follow § 7-9-68; screening and landscaping follow § 7-9-71; these are incorporated by reference in the district’s supplemental regulations (§ 7-9-31.4) . Boundary landscaping along streets, where required, follows § 7-9-71.2(a) .
  • Where it applies. Areas mapped as Single-Family Residential on the County zoning map; see Zoning.

Multiple-Family Residential Districts (7-9-32)

  • Purpose and typical uses. Not found in retrieved materials.
  • Key dimensional/landscape rules. Landscaping and irrigation (§ 7-9-68) and screening/landscaping (§ 7-9-71) apply via the district’s supplemental regulations (§ 7-9-32.4) .
  • Where it applies. Multi-unit residential areas in the unincorporated county; confirm via Land Use and zoning maps.

Commercial Districts — CR, CC, CH, CN

  • Purpose and typical uses. Commercial districts accommodate retail, office, and community services at accessible locations compatible with surrounding development (§ 7-9-33.1) .
  • Key dimensional/landscape rules.
    • Parking lots: tree placement, planter sizing, and screening along streets per § 7-9-70.4(f)–(g) .
    • Drive-throughs: 36-inch headlight screening plus additional landscaping where needed (§ 7-9-111(a), (f)) .
    • General: apply § 7-9-64 (fences/walls/hedges), § 7-9-68 (irrigation), and § 7-9-71 (screening/landscaping) as cross-referenced throughout the Code .
  • Where it applies. All unincorporated parcels zoned CR, CC, CH, CN.

Industrial Districts — e.g., M1

  • Purpose and typical uses. Not found in retrieved materials.
  • Key dimensional/landscape rules.
    • Loading: all loading operations must be on-site and screened by landscape or architectural features so they are not visible from public streets or from adjacent residential or agricultural districts (M1) (§ 7-9-34.4(d)) .
    • Trash/storage: enclose with a building or a wall at least 6 feet tall; if unroofed, keep at least 40 feet from any res/ag district boundary (§ 7-9-34.4(h)) .
    • Apply countywide § 7-9-64, § 7-9-68, and § 7-9-71 via supplemental regulations (§ 7-9-34.4) .
  • Where it applies. Unincorporated industrial zones mapped by the County; verify specific district (e.g., M1) on the zoning map.

R/OSP District

  • Purpose and typical uses. Not found in retrieved materials.
  • Key dimensional/landscape rules (as stated in district text and supplemental regulations).
    • Fencing within setback areas must be rustic or rural in character and comply with § 7-9-64 (§ 7-9-30.4(b)(1)) .
    • Landscaping and irrigation per § 7-9-68; screening and landscaping per § 7-9-71 (§ 7-9-30.4(e), (j)(1)–(2)) .
    • Loading areas must be screened from view using landscaping or architectural features; roof equipment must be screened from public street rights-of-way and property boundaries (district text) .
    • Trash/storage: for R/OSP, store within a building or within a masonry wall at least 6 feet high; if unroofed, keep at least 50 feet from any res/ag zoning boundary (§ 7-9-30.4(m)(1)) .
  • Where it applies. Parcels zoned R/OSP in the unincorporated area; confirm on the zoning map.

At-a-glance: key landscaping and screening standards (unincorporated areas)

Topic Minimum standard Where it applies Code Reference
Opaque boundary screening Provide and maintain an opaque screen along any boundary abutting res/ag zoning; choose walls, berms, fences, or hedges; irrigation required for living screens Nonresidential premises abutting res/ag § 7-9-71.1(a)
Minimum screen height 6 feet, unless a shorter height is required elsewhere All required screens § 7-9-71.1(b)
No signs on screening Prohibit signs/sign supports on required screening All required screens § 7-9-71.1(c)
Street boundary landscaping Depth equals required setback or 10 feet, whichever is less Where district rules require landscaping § 7-9-71.2(a)
Landscape–parking barrier Separate landscaping from parking/drive areas with a curb/wall at least 6 inches high All landscaped areas next to parking § 7-9-71.2(c)
Irrigation + maintenance Permanent irrigation; maintain plants in neat, healthy condition All required landscaping § 7-9-71.2(d)–(e)
Parking-lot trees/planters Shade trees at aisle ends and so no more than 6 spaces between planters; planters ≥25 sq ft; trees ≥15-gallon Commercial/other sites with parking lots § 7-9-70.4(f)
Parking screening Screen open parking/structures adjacent to street ROWs and where streets separate parking from res/ag Commercial/other sites § 7-9-70.4(g)
Front setback fences Max 3.5 ft (solid) or 5 ft (open); chain link prohibited Any zone’s front setbacks § 7-9-64(b)(1)–(3)
Side/rear street-adjacent fences Max 6 ft where no vehicular access Any zone § 7-9-64(b)(4)
Measuring fence height Measure from base to top on higher side; special method for fences atop retaining walls Any fence/wall § 7-9-64; § 7-9-24.10(b)
Drive-through lane screening Decorative wall + landscape to 36 inches height to block headlights Drive-through facilities in commercial districts § 7-9-111(f)
Landscape Documentation Package Required for projects subject to the County’s Landscape Irrigation Code As defined in § 7-9-68.2; verify applicability § 7-9-68; § 7-9-71.2(f)

Tip: These landscaping and screening provisions are part of countywide development standards; see how they intersect with your site’s setbacks and frontage in Development Standards. If you think you need flexibility (e.g., fence height), explore Variances and Exceptions. Existing features that don’t meet current rules may be regulated as Nonconforming Uses. Sign placement on screens is restricted; consult Signage.

Checklist

  • Confirm your parcel is in the unincorporated area and identify its base district on the County zoning map; review district supplemental rules that cross-reference screening/landscaping (§ 7-9-31.4; § 7-9-32.4; § 7-9-34.4; § 7-9-30.4) .
  • If your site abuts a residential or agricultural district, design a compliant opaque screen ≥6 ft using allowed materials (§ 7-9-71.1(a)–(b)) .
  • Provide boundary landscaping along street frontages to the required depth, with 6-inch curbs/walls separating it from parking/drive aisles (§ 7-9-71.2(a), (c)) .
  • For parking lots, lay out trees/planters and screening per § 7-9-70.4(f)–(g) (tree spacing, planter size, screening adjacent to streets) .
  • Check fence/wall/hedge heights and materials (front vs. side/rear setbacks; no chain link in front setbacks) and measurement rules for retaining walls (§ 7-9-64; § 7-9-24.10(b)) .
  • If your project is subject to the Landscape Irrigation Code, prepare the Landscape Documentation Package and secure the Certificate of Completion (§§ 7-9-68; 7-9-71.2(f)) .
  • For drive-throughs, add 36-inch headlight screening and any extra buffers needed to protect nearby residences (§ 7-9-111(a), (f)) .
  • If a discretionary permit is needed, coordinate early with Design Review to confirm acceptable plant palettes, wall finishes, and view corridor protections. Verify with the jurisdiction.

Risks & Ambiguities

Issue Why it matters What to verify
“Abutting” res/ag boundary Triggers the 6-ft opaque screen requirement Confirm zoning on the other side of the boundary lot line (§ 7-9-71.1(a))
Hedge opacity within 18 months If the hedge doesn’t fill in, the Director may require a wall/berm/solid fence Plant selection, spacing, and irrigation plan (§ 7-9-71.1(a)(5))
Fence height on retaining walls Height is measured from the base at lowest existing grade; can exceed expectations on slopes How height is measured on your site and any front-setback nuances (§ 7-9-24.10(b); § 7-9-64)
Parking-lot tree spacing Tree/planter spacing affects stall counts and aisle layout Site plan shows trees at required intervals and planter sizes (§ 7-9-70.4(f))
Drive-through screening Insufficient 36-inch screening can cause glare impacts and delays approvals Wall/landscape combo to 36 inches; proximity to homes (§ 7-9-111(f))
Overlays and coastal area Special viewshed, habitat, or coastal rules may narrow plant/wall options Applicable Overlay Districts; permit conditions. Verify with the jurisdiction
Signs on screening Placing signs on required screening is prohibited Sign program locates all signs off required screening (§ 7-9-71.1(c))
Existing nonconforming fences Older fences may exceed height/material limits Status under Nonconforming Uses; whether alteration triggers compliance

Plain-English Summary

In the unincorporated areas, plan on a planted street edge and an opaque 6-foot screen if your nonresidential site touches a residential or agricultural zone. Keep front-yard fences short (3.5 ft solid or 5 ft open), avoid chain link in the front setback, and distribute shade trees across parking lots with planters at least every six spaces. Some projects must submit a Landscape Documentation Package under the County’s irrigation rules, and special uses like drive-throughs need headlight screening. If you need flexibility, ask about Variances and Exceptions.

Source References

  • Title and authority of the Comprehensive Zoning Code (Title 7, Division 9, Article 2): § 7-9-19.1
  • Screening and landscaping, countywide: § 7-9-71; § 7-9-71.1; § 7-9-71.2
  • Landscape and irrigation code (purpose/applicability): § 7-9-68; § 7-9-68.1; § 7-9-68.2
  • Fences, walls, and hedges: § 7-9-64
  • Measuring fence height on retaining walls in front setbacks: § 7-9-24.10(b)
  • Parking lot landscaping and screening: § 7-9-70.4(f)–(g)
  • Drive-through screening and landscaping: § 7-9-111(a), (f)
  • Single-Family purpose and cross-references: § 7-9-31.1; § 7-9-31.4
  • Multiple-Family supplemental regs: § 7-9-32.4
  • Industrial supplemental regs (M1 loading/trash screening): § 7-9-34.4(d), (h)
  • R/OSP district supplemental rules and district text (fencing character, loading/roof equipment screening, waste storage): § 7-9-30.4; district text excerpts

Sources

Retrieved passages

  • Orange County Zoning Code (section 7-9-64) High relevance
  • CGBSC § 1 (Section 5.106.4) High relevance
  • Orange County Zoning Code (section 7-9-64.) High relevance
  • Orange County Zoning Code (section 7-) High relevance
  • Orange County Zoning Code (section 7-9-64.) High relevance
  • CWUIC § 65850.6 (Title 24) High relevance
  • CGBSC § 1 (§ 1) High relevance
  • CFC § 1 (section 7-9-125) High relevance

Cited sections

Frequently asked questions

What counts as an “opaque screen” along a residential boundary?

An opaque screen must fully block views using a solid wall, a landscaped earthen berm, a solid fence, an open fence combined with plant material, or an evergreen hedge designed to become opaque within 18 months (with irrigation). The minimum height is 6 feet unless another section requires less (§ 7-9-71.1(a)–(b)) .

How tall can my front-yard fence be in the unincorporated areas?

In any required front setback, a solid fence may be up to 3.5 feet tall and an open fence/pilasters up to 5 feet; chain link is not allowed in the front setback. Side or rear setbacks along a street (without driveway access) allow up to 6 feet (§ 7-9-64(b)(1)–(4)) .

Do hedges “count” as screening? What if they don’t fill in?

Yes—hedges are allowed if they’re compact evergreens designed/installed to create at least a 2-foot-wide opaque screen within 18 months and have permanent irrigation. If they fail to achieve or maintain opacity, the Director can require a wall, berm, or solid fence instead (§ 7-9-71.1(a)(5)) .

What are the parking lot tree and planter requirements?

Provide shade trees at the end of each parking aisle and so no more than six spaces occur between planters; planters must be at least 25 square feet (exclusive of the 6-inch curb), and new trees at least 15-gallon. Parking areas adjacent to streets must also be screened (§ 7-9-70.4(f)–(g)) .

When do I need a Landscape Documentation Package?

If your landscape project is subject to the County’s Landscape Irrigation Code, you must submit a Landscape Documentation Package and obtain a Certificate of Completion. Check § 7-9-68.2 for applicability and coordinate with the County to confirm your triggers (§§ 7-9-68; 7-9-71.2(f)) .

How is fence height measured on a sloped lot with a retaining wall?

Generally, fence/wall height is measured from the base to the top on the higher side. Where a fence sits atop a retaining wall in the front setback, the measurement starts at the base of the wall (lowest existing grade) to the highest point of the fence (§ 7-9-64; § 7-9-24.10(b)) .

What screening is required for industrial loading areas?

In the M1 district, all loading must occur on-site and be screened by landscaping or architectural features so it isn’t visible from public streets or from adjacent residential or agricultural districts. Trash/storage enclosures and setbacks from res/ag districts are also specified (§ 7-9-34.4(d), (h)) .

Do drive-through lanes require headlight screening?

Yes. Each drive-through aisle must be screened with decorative walls and landscaping to a height of 36 inches to block headlight glare from adjacent streets and parking lots. Additional screening may be required near residential areas (§ 7-9-111(a), (f)) .

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