Local zoning · Clayton

Clayton — Landscaping and Screening

Q: What landscaping drawings do I need for a residential addition in Clayton?

If your project triggers Site Plan Review, Planned Development review, or meets the Landscape Project Application thresholds (e.g., irrigated area ≥ 500 sq ft new or ≥ 2,500 sq ft rehabilitated), you must submit a scaled Landscape Plan and LPA materials per § 17.28.090 and § 17.80.030 .

Q: How high can I build a fence on my Clayton lot?

Standard limits are 30 in within 10 ft of the front property line and 6 ft in most other setback areas; 8 ft is allowed within main building areas; the Director may allow up to 7 ft in side/rear setbacks with findings, and recreational enclosures up to 12 ft require a land‑use permit (§ 17.36.075–076 ).

Q: Do ADUs in Clayton require screening from neighbors?

Yes. Chapter 17.47 requires evergreen screening between an ADU and side/rear property lines — 1 × 15‑gal tree per 15 ft of exterior wall or 1 × 15‑gal shrub per 10 ft ; plants must reach ≥ 6 ft tall at maturity. A 6‑ft solid fence may be used in place of planting when the ADU is within 5 ft of the property line. Chapter 17.47 (ADU landscaping).

Q: What trees must I show on a Clayton development plan?

Show all existing natural features and trees 6 in DBH or larger ; any tree ≥ 6 in proposed for removal must be evaluated by a certified arborist per the application requirements for PD and RD plans (§ 17.28.090 , § 17.34.060 ).

Q: Are there special planting requirements for parking lots?

Yes. For parking lots serving non‑residential uses the City requires perimeter planting, interior planting islands equal to ≥ 10% of the lot for lots > 6,000 sq ft , planting island minimums ( 25 sq ft ; 5 ft width), and 1 tree (24‑inch box) per 3 spaces ; irrigation and a written landscape maintenance agreement are also required (§ 17.37 ).

Q: When do I need to follow Clayton’s water‑conserving landscape rules?

When your project’s irrigated landscape area is ≥ 500 sq ft for new projects (or ≥ 2,500 sq ft for rehabilitated landscapes) you must complete a Landscape Project Application and meet the Chapter 17.80 plan, irrigation, audit and certification requirements (§ 17.80.030–080 ).

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

Ask a question free See coverage

Last reviewed: July 1, 2026

Overview

This page summarizes Clayton's zoning rules that directly control landscaping, screening, buffers, fences, walls, and trees in development review and land-use permits. Key regulatory sources are the Planned Development rules, the Resource Overlay rules, the City fence standards, the Off‑Street Parking landscaping rules, and the City’s Landscape Water Conservation chapter (frequently cited as Chapter 17.80) — see the controlling sections listed below for each rule. For site design questions that touch parking, setbacks, or design review, consult the relevant pages for parking, development standards, design review, and overlay districts.

Rules & how they apply (district-by-district)

Note: every requirement below is drawn from the City of Clayton Municipal Code. Where the Code gives district-level purpose or required plan components we cite that §; where numeric standards exist we list them and cite the controlling § and the source preview marker from the uploaded ordinance file.

Residential single‑family districts (map symbols R-10, R-12, R-15, R-20, R-40-H)

Purpose & typical uses: single-family homes and accessory uses; R-40-H allows equestrian uses in limited form (§ 17.16.010).
Landscaping/screening expectations: projects subject to Site Plan Review or PD review must submit a landscape plan; large or staged developments must include landscape plans as part of development plan submittals (§ 17.44.100 / submittal checklist, and § 17.28.090 for PD requirements).
Fences/walls: general fence heights and placement apply across residential districts (see § 17.36.075 below for exact maximums).
Where it applies: across all single‑family residential zones; design review exemptions for small ADUs exist (see ADU subsection). (§ 17.44.030.)

Multiple‑family residential (M‑R and variants)

Purpose & typical uses: townhouses, multi‑unit residential subject to the M‑R rules; open area and landscape minimums are explicit: e.g., 20% open area with 75% of that planted (trees/shrubs/groundcover) (§ 17.20.150).
Setbacks/dimensional: explicit rear/exterior side setbacks and building coverage caps are in the M‑R articles; landscaping is a required part of the development/site plan (§ 17.20.105–150).
Where it applies: all multi‑family zones shown on Clayton zoning map (see the zoning menu). See Clayton Zoning for mapping.

Planned Development (PD / Planned Development District)

Purpose: PD allows tailored controls so development can protect natural features and integrate landscaping, screening and fences as conditions of approval; the approving body may adopt special planting, tree, fence, and maintenance obligations as part of a Development Plan Permit (§ 17.28.080, § 17.28.090, § 17.28.160).
Typical review items: Landscape plans, tree inventories (trees ≥ 6 in DBH must be shown/evaluated), water‑efficient design, fire‑resistant plantings where appropriate, and maintenance/ownership arrangements (§ 17.28.090, § 17.28.160).
Practical: PD approvals commonly include planting and fence/wall construction details as enforceable conditions (§ 17.28.150).

Resource Overlay (RD)

Purpose: the RD overlay is explicitly intended to preserve natural topography, mature trees, creeks, and sensitive features. The RD requires an RD Development Plan with a detailed map of mature trees and vegetation and a landscape plan prepared by a qualified landscape designer or landscape architect (§ 17.34.010–060).
Practical effect: any development in an RD must provide mitigation/avoidance measures for important trees and include landscape/irrigation plans tied to the RD plan (§ 17.34.060.F).

Public Facility (PF) and Commercial districts

Purpose & review: PF and commercial projects with parking or public frontage are reviewed with landscaping/screening/parking standards in mind; the PF district requires project landscaping and parking to be determined as part of site plan review (§ 17.33.010–030).
Parking lots: parking lot screening/planting and tree counts are required where parking serves non‑residential development (see Off‑Street Parking chapter § 17.37, summarized below).

Key, decision‑relevant numeric standards (quick reference table)

What	Standard / requirement	Code Reference
Fence height — front setback area (first 10 ft)	max 30 in within 10 ft of front property line	§ 17.36.075.A
Fence height — remaining front setback / exterior side / side & rear	max 6 ft (main building area 8 ft)	§ 17.36.075.A–F
Administrative exception for fence height	Director may permit up to 7 ft in side/rear setback (findings required)	§ 17.36.075.K
Fenced recreational enclosure	up to 12 ft with land‑use permit	§ 17.36.076
ADU landscape screening (minimum)	1 × 15‑gal tree per 15 ft of exterior wall OR 1 × 15‑gal shrub per 10 ft; plants must reach ≥ 6 ft at maturity; solid 6‑ft fence may substitute when ADU setbacks < 5 ft	Chapter 17.47 (ADU rules) — ADU Landscape Requirements; see Chapter 17.47 text.
Parking lot planting — tree frequency	1 tree (24‑inch box) per 3 parking spaces	§ 17.37 (parking landscaping standards)
Parking lot interior planting	internal planting = ≥ 10% of lot area for lots > 6,000 sq ft; planting islands min 25 sq ft and 5 ft width	§ 17.37 (parking landscaping standards)
Landscape plan / LPA threshold (water conservation rules)	landscape LPA required for new projects with irrigated area ≥ 500 sq ft (rehab ≥ 2,500 sq ft)	§ 17.80.030 (Landscape Water Conservation Standards)
Landscape audit / certification	water‑efficiency audit required; EPA WaterSense certified auditor; certificate required within 30 days of maintenance period start	§ 17.80.070 / 17.80.080

How the rules work in practice — plain English synthesis & guidance

Fences: Clayton sets low fences near the street to preserve visibility (max 30 in within 10 ft of the front property line) but allows 6 ft (and in main building areas 8 ft) elsewhere; if you need a higher rear/side fence the Director can grant a 7 ft administrative permit, and the Planning Commission may approve higher recreational enclosures (up to 12 ft) with a land‑use permit (§ 17.36.075–076). For the Director to grant a 7 ft fence the applicant must meet findings about safety, access, and neighborhood compatibility (§ 17.36.075.K).
Trees and landscape plans: large projects and PDs must include a detailed landscape plan and tree inventory; mature trees (≥ 6 in DBH) proposed for removal must be evaluated by a certified arborist (RD and PD application lists explicitly require this) (§ 17.28.090, § 17.34.060). If your parcel is in the RD overlay, expect mandatory mapping and stricter review of tree removal (§ 17.34.060.A).
Parking and screening: parking lots over 5 spaces or >6,000 sq ft must provide interior planting, perimetric planting, tree counts, irrigation, and maintenance guarantees (planting islands, tree box sizes, irrigation and a written maintenance agreement are required) — see the Off‑Street Parking landscaping rules (§ 17.37) and the Park‑lot screening language. This is frequently applied to non‑residential projects undergoing Site Plan Review.
Water‑use rules: new and rehabilitated landscapes meeting the numerical thresholds require a Landscape Project Application (LPA); plans must meet the City’s water‑efficient design, irrigation plan, audit, certification, and maintenance schedule requirements (§ 17.80.030–100). These rules are enforced at plan check and final sign‑off. See the California Building Standards Code page when projects tie into Title 24 systems (e.g., irrigation backflow, utility connections).

Checklist (what an applicant must satisfy for landscaping & screening)

Submit a scaled Landscape Plan when required (PD, RD, Site Plan Review, projects with irrigated area ≥ 500 sq ft) — see § 17.28.090 and § 17.80.030.
For RD or PD: include tree inventory showing trees ≥ 6 in DBH and arborist evaluation if removal is proposed (§ 17.34.060, § 17.28.090).
Parking lots > five spaces or >6,000 sq ft: show perimeter planting, internal planting = ≥ 10% of lot, 1 tree / 3 spaces (24‑inch box minimum), irrigation, curbs/wheel stops, and a landscape maintenance agreement (§ 17.37).
Show fences/walls on site plan with heights and materials; comply with fence limits (front setback 30 in / 10 ft, most other locations 6 ft) or prepare exception application (§ 17.36.075).
If requesting fence height > standard, prepare findings for Director or Planning Commission (administrative use permit or land use permit) (§ 17.36.075.K, § 17.36.076).
For ADUs: show evergreen screening or 6‑ft solid fence in-lieu (ADU landscaping specifics) and low‑water plant choices; include trees/shrubs at the required spacing (§ 17.47).
For water‑efficiency: include an irrigation plan, Controller map, MAWA calculations and schedule, and arrange for a landscape audit and Certificates of Compliance (§ 17.80.060–090).

Risks & Ambiguities

Issue	Why it matters	What to verify
Applying single‑family fence rules inside PD or RD projects	PD/RD approvals can set different fence/landscape conditions (§ 17.28.080)	Verify PD or RD-specific conditions in your parcel’s approved plan; PD overrides base standards where adopted. § 17.28.080
Exact parking‑landscape section reference	The ordinance text requires planting but sections to cite vary in Table of Contents	Verify which Off‑Street Parking section (Chapter 17.37) is being applied to your permit; demand the parking landscaping checklist from staff. § 17.37 (see parking standards snippets)
Mature tree removal in RD or PD	Tree protection and arborist reports are required; removal may trigger mitigation or denial (§ 17.34.060)	Confirm whether trees ≥ 6 in DBH are present and whether arborist report requirements apply. § 17.34.060
ADU setbacks vs. screening	ADU rules allow a 6‑ft fence in lieu of planting when distance < 5 ft, but ADU siting may trigger other site review	Check ADU-specific landscape subsection in Chapter 17.47 when planning an ADU build. Chapter 17.47 (ADU landscaping)
Water conservation thresholds (500/2,500 sq ft)	Missing the LPA triggers rework at plan check and possible denial	Confirm the irrigated area calculation method with City staff and include MAWA worksheet per § 17.80.030.

Plain‑English summary

Clayton requires landscape plans and specific screening where projects are large, within overlays, or subject to Site Plan/PD review: fences are limited close to streets but allowed higher in rear yards (with exceptions), parking lots must include trees and planting islands, ADUs need evergreen screening or a 6‑ft fence, and larger landscapes must meet the City’s water‑efficiency/LPA rules. Always show fences, trees, and irrigation on your site plan and check for RD/PD conditions that can change the base rules (§ 17.36.075, § 17.37, § 17.34.060, § 17.80.030).

Source References

Clayton Municipal Code — Planned Development District rules: § 17.28.080, § 17.28.090, § 17.28.160.
Clayton Municipal Code — Resource Overlay (RD) requirements: § 17.34.010–060 (landscape & tree inventory requirements).
Clayton Municipal Code — Fencing Standards: § 17.36.075, fenced recreational enclosures § 17.36.076.
Clayton Municipal Code — Off‑Street Parking landscaping & planting rules (parking lot screening, tree counts): Chapter 17.37 (see parking landscaping provisions in code snippet).
Clayton Municipal Code — Landscape Water Conservation Standards: Chapter 17.80 (notably § 17.80.010, § 17.80.030, § 17.80.060–090).
Clayton Municipal Code — ADU landscaping and screening rules: Chapter 17.47 (ADU landscape requirements; evergreen screening and substitution by 6‑ft fence).

(Each bullet above points to the relevant Code section in the uploaded Clayton Zoning Code extract; verify with the City for parcel‑specific or newly amended rules. If you need direct chapter text or exact map layers, request the full local code extract or a parcel lookup.)

Sources

Retrieved passages

Clayton Zoning Code (Chapter 15.70) High relevance
Clayton Zoning Code (Section 17.28.170) High relevance
Clayton Zoning Code (Chapter 15.70) High relevance
Clayton Zoning Code (Chapter 17.47) High relevance
Clayton Zoning Code (Title 16) Medium relevance
CFC § 17958.1 (Section 17958.1) Medium relevance
CWUIC § 65850.6 (Title 24) Medium relevance
CBC § 2 (Section 17.64.110) Medium relevance
Clayton Zoning Code (Section 17.36.075) Medium relevance
Clayton Zoning Code (chapter shall) Medium relevance
Clayton Zoning Code (Title 17) Medium relevance
Clayton Zoning Code (Chapter 17.80) Medium relevance
Clayton Zoning Code (Section 17.28.170) Medium relevance
Clayton Zoning Code (CHAPTER 17.80) Medium relevance
Clayton Zoning Code (chapter prior) Medium relevance
Clayton Zoning Code Medium relevance
Clayton Zoning Code (Chapter 13.12) Medium relevance
Clayton Zoning Code (Section 17.16.020.B.) Medium relevance
California Residential Code Medium relevance
California Residential Code Medium relevance
California Residential Code Medium relevance
Clayton Zoning Code (§ 8) Medium relevance
Clayton Zoning Code (Chapter 17.37) Medium relevance
Clayton Zoning Code (section applies) Medium relevance

Cited sections

Official Clayton code library

Frequently asked questions

What landscaping drawings do I need for a residential addition in Clayton?

If your project triggers Site Plan Review, Planned Development review, or meets the Landscape Project Application thresholds (e.g., irrigated area ≥ 500 sq ft new or ≥ 2,500 sq ft rehabilitated), you must submit a scaled Landscape Plan and LPA materials per § 17.28.090 and § 17.80.030.

How high can I build a fence on my Clayton lot?

Standard limits are 30 in within 10 ft of the front property line and 6 ft in most other setback areas; 8 ft is allowed within main building areas; the Director may allow up to 7 ft in side/rear setbacks with findings, and recreational enclosures up to 12 ft require a land‑use permit (§ 17.36.075–076).

Do ADUs in Clayton require screening from neighbors?

Yes. Chapter 17.47 requires evergreen screening between an ADU and side/rear property lines — 1 × 15‑gal tree per 15 ft of exterior wall or 1 × 15‑gal shrub per 10 ft; plants must reach ≥ 6 ft tall at maturity. A 6‑ft solid fence may be used in place of planting when the ADU is within 5 ft of the property line. Chapter 17.47 (ADU landscaping).

What trees must I show on a Clayton development plan?

Show all existing natural features and trees 6 in DBH or larger; any tree ≥ 6 in proposed for removal must be evaluated by a certified arborist per the application requirements for PD and RD plans (§ 17.28.090, § 17.34.060).

Are there special planting requirements for parking lots?

Yes. For parking lots serving non‑residential uses the City requires perimeter planting, interior planting islands equal to ≥ 10% of the lot for lots > 6,000 sq ft, planting island minimums (25 sq ft; 5 ft width), and 1 tree (24‑inch box) per 3 spaces; irrigation and a written landscape maintenance agreement are also required (§ 17.37).

When do I need to follow Clayton’s water‑conserving landscape rules?

When your project’s irrigated landscape area is ≥ 500 sq ft for new projects (or ≥ 2,500 sq ft for rehabilitated landscapes) you must complete a Landscape Project Application and meet the Chapter 17.80 plan, irrigation, audit and certification requirements (§ 17.80.030–080).

Can a Planned Development change standard fence/landscape rules?

Yes. The PD approval process explicitly allows the Planning Commission or City Council to adopt rules differing from base standards — including planting, tree maintenance, fence/wall design, setbacks and screening — as part of a Development Plan Permit (see § 17.28.080 and related application requirements).

Who enforces landscape maintenance obligations after project approval?

The City may require a written landscaping and maintenance agreement with the property owner (often recorded or a condition of approval) and the landscape is subject to landscape audits and certificates of compliance under Chapter 17.80; non‑compliance must be corrected before final sign‑off (§ 17.80.070–090).

Ask about any Clayton property

Get a cited, plain-English answer on Clayton zoning, setbacks, FAR, ADUs and permits — for any address.

Start Free Trial