Local zoning · Larkspur

Larkspur — Landscaping and Screening

Q: What are Larkspur’s parking‑lot landscaping requirements?

For parking lots with 12 or more stalls: at least 10% of the parking lot area must be landscaped; islands, irrigation, 6‑inch curbs protecting planting, a 6‑ft planted street strip (except for necessary driveways), and one tree per six parking spaces are required (§ 18.56.160(B–C) ) .

Q: Are there design standards for fences and walls (materials, location, height)?

The design‑review criteria require that walls, fences and screening be integrated with the project design and used to conceal parking, refuse and equipment; the code emphasizes minimizing large uniform retaining walls and reducing visual impact but does not provide a single universal numeric fence height for every context in the retrieved materials — districts and specific situations (traffic sightlines, frontage requirements) add requirements (§ 18.64.050 ) . Verify fence‑height limits with Planning/Public Works (Not found in retrieved materials as a universal height limit).

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

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Last reviewed: July 2, 2026

Overview

This page summarizes what the City of Larkspur’s zoning ordinance requires for landscaping and screening: when a landscape plan is required, parking-lot and buffer standards, tree/heritage-tree replacement rules, and screening of mechanical equipment and outdoor storage. Requirements are drawn from the Larkspur Municipal Code (Title 18) and the site-specific standards in Chapter 18.101; each requirement below is tied to the controlling code section. For rules about parking dimensions or stall counts see the Larkspur Parking page; for how landscaping interacts with setbacks and other dimensional rules see Larkspur Development Standards; and when design review is involved see Larkspur Design Review.

Key short points:

Landscape plans are a routine required submittal for discretionary projects and many development plans (§ 18.64.040) .
Parking-lot landscaping, buffers and screening are explicit and quantified in § 18.56.160 (minimum 10% landscape in larger lots; specific buffer widths and planting ratios) .
Heritage tree removal and replacement ratios are in § 18.101.080(A); additional site-specific tree/monitoring requirements appear in § 18.101.090 (Housing Element sites / biological/landscaping rules) .
Design-review criteria require that walls, fences and screening be used “skillfully” and integrated with design; see § 18.64.050 (criteria including materials, colors and screening) .
Screening of exterior mechanical equipment and outdoor storage is required to the extent feasible under the City’s performance/maintenance rules; see § 18.16.280 (screening of activities and mechanical equipment) .

District-by-district guidance (what the ordinance actually says)

Below are the Larkspur zoning districts that matter most to landscaping/screening decisions. Each district summary points to the chapter that controls allowed uses and the common dimensional/plan requirements. Where the code ties landscaping or screening directly to a district (for example, buffer requirements when a commercial use adjoins residential), that rule is cited.

Note: for project-level design-review triggers and required plan submittals see Larkspur Design Review and § 18.64.020–040 .

R-1 — First Residential District (Chapter 18.20)

Purpose / typical uses: low-density single-family homes, accessory structures, ADUs; permitted uses listed in § 18.20.020 .
Landscaping/screening hooks: single-family projects are generally exempt from discretionary design review only when they meet all district standards; otherwise design-review submittals must include landscape plans (§ 18.64.020 and § 18.64.040) .
When other uses (e.g., a commercial lot or parking area) adjoin an R district the code requires fences/hedges or planted buffers and specific landscaped setbacks (see § 18.56.160(A)) .
Where projects are subject to a planned or precise residential master plan, the master plan requirements call for landscaping and planting plans (§ 18.36.140) .

R-2 — Second Residential District (Chapter 18.28)

Purpose / typical uses: medium-density residential (one- and two-family dwellings); accessory units permitted per § 18.28.020 .
Landscaping/screening: same design-review and landscape-plan triggers as R-1; landscaping and usable outdoor area standards for multi-family are in R-3 language when applicable (see R-3) and design-review rules apply (§ 18.64.040) .

R-3 — Third Residential District (Chapter 18.32)

Purpose / typical uses: multifamily dwellings (standards in § 18.32.030–060) .
Landscaping connection: usable outdoor area requirements, common open space, and landscaping for multifamily projects are detailed in R‑3 standards; landscape plans are required for development subject to discretionary review (§ 18.32.120 and § 18.64.040) .

C-1 — Neighborhood Commercial (Chapter 18.44)

Purpose / typical uses: retail/office at neighborhood scale; § 18.44.020–060 lists uses and yard rules .
Landscaping/screening hooks: where a commercial site adjoins property in an R district the code requires landscaped/fenced yards along those property lines (e.g., a required 10–40 ft yard condition with specified landscaped/fence areas in § 18.44.060(B)) .
Parking areas in commercial districts are subject to the parking-lot landscape rules in § 18.56.160 (trees per stall ratio, minimum landscaped strip along street frontages, irrigation, etc.) .

Planned Development / P‑D / PD (Chapter 18.55)

Purpose: flexible standards for integrated developments; the ordinance explicitly requires that landscaping and planting plans be part of a precise development plan (§ 18.55.100(G–H)) and that landscaping/planting standards follow the district or be set in the PD (§ 18.55.100 / § 18.55.030) .
Practical effect: PD approvals will specify landscaping, screening, maintenance responsibilities and often create recorded covenants or maintenance funds.

H — Combining Heritage Preservation District (Chapter 18.19 referenced)

Effect on landscaping/screening: projects in H must meet historic-preservation design criteria; landscape/planting changes that affect historic character are subject to additional review and the Heritage Preservation Board standards (§ 18.19.040(A) referenced in design-review criteria) .

The most decision-relevant standards (quick table)

What it controls	Requirement (short)	Code Reference
Parking‑lot landscape for ≥12 stalls	≥10% of parking lot area must be landscaped; irrigation; islands and curbing; 1 tree per 6 spaces; 6‑ft landscape strip along street frontages	§ 18.56.160(B–C)
Screening where parking/loading adjoins R districts	Fence/hedge/plant buffer not less than 3.5 ft high; adjacent narrow spaces must be planted and maintained	§ 18.56.160(A)
Minimum landscaped buffer where access/parking adjoins property line (non‑residential)	Minimum width 3 ft landscaped buffer strip	§ 18.56.160(D)
Landscape plan and required plan contents	Landscape plans (plants, irrigation, sprinkler heads, lighting, tree sizes and spacing) required as part of design review, precise dev. plans and development plans; show existing trees >16" trunk dia., all hedges/bushes above thresholds	§ 18.64.040 (Required information items 7–8)
Walls/fences/screening as design criterion	Walls/fences/screens must conceal parking, refuse, mechanical equipment and be integrated into design; retaining walls should be minimized visually	§ 18.64.050 (Materials & Walls/Fences/Screening)
Screening of mechanical equipment & outdoor storage	All exterior mechanical equipment (except window AC) must be screened to extent feasible; screening may be wall/fence + landscaping; approval by Community Development Director	§ 18.16.280 (Screening of Activities & Mechanical Equipment)
Heritage tree removal/replacement	Replacement required (e.g., 2:1 for 15–24" dia.; 4:1 over 24" dia.); native species & Fire Marshall may modify requirement	§ 18.101.080(A)
Site-specific oak/wetland/habitat replacement & monitoring	Site-specific replacement ratios, native-species-only landscape plans, planting sizes and a 7‑year monitoring program appear in the site standards for Housing Element sites (biological/landscaping rules)	§ 18.101.090 (Biological/Landscaping)

(Each of the rows above is documented in the City’s Title 18 language; see the Source References below for the ordinance citations and file excerpts.)

Practical guidance / plain-English interpretation (synthesis)

If a project is discretionary (design review, development plan, PD, conditional use permit), expect to submit a full landscape and irrigation plan showing existing trees (any trunk >16" or other thresholds), plant species, irrigation, tree sizes/spacing and a maintenance/monitoring plan (§ 18.64.040) .
For any parking area with 12 or more stalls, design early for the parking-lot landscape minimum (10% of lot area), curb-protected planting islands, trees at roughly 1 per 6 stalls, irrigation and a 6‑ft frontage planting strip—these are non-negotiable performance items (§ 18.56.160(B–C)) .
When a commercial or industrial site sits next to an R district, the ordinance explicitly requires planted buffers or fences along the shared property line—measure and design to meet the 3.5 ft minimum hedge/fence buffer (and additional landscaped yard widths noted for the specific district) (§ 18.56.160(A); e.g., C‑1 lots adjoining R districts also have yard/landscape requirements in § 18.44.060(B)) .
Mechanical equipment (HVAC units, backflow devices, pad-mounted transformers, water tanks, etc.) must be screened so they are not readily visible from the street or adjacent properties. Options include opaque walls, fences combined with planting, or locating equipment behind buildings—screening design is reviewed and approved by the Community Development Director (§ 18.16.280(K)) .
Tree removal triggers replacement at prescribed ratios; heritage/native oaks have higher replacement requirements and the Fire Marshal or Community Development Director can require modifications for vegetation management/fire-safety compliance (§ 18.101.080(A) and § 18.101.090 ) .

Checklist (what an applicant must typically provide)

Landscape plan per § 18.64.040 (showing planted areas, irrigation heads, plant list, sizes and spacing, and plans for monitoring/maintenance)
Tree survey showing trees >16" trunk diameter and identification of any proposed removals (§ 18.64.040(7))
Parking-lot planting plan and calculations (≥10% landscaped area if ≥12 stalls; tree count 1/6 spaces) (§ 18.56.160)
Screening plan for mechanical equipment / outdoor storage showing walls/fences and planting strategy (§ 18.16.280, § 18.64.050)
If heritage or large native trees are to be removed: replacement plan meeting § 18.101.080(A) ratios or the site-specific § 18.101.090 requirements (monitoring plan, irrigation, caging)
For PD, precise dev. plans or master plans, include full planting plans and maintenance funding/HOA covenant language (§ 18.55.100, § 18.36.140)
Coordinate street trees with Public Works / Larkspur street‑tree rules in § 12.16.010–020 (street trees are a Public Works requirement referenced in Title 18)

Risks & Ambiguities

Issue	Why it matters	What to verify
Fire-safety vs. tree replacement	The Fire Marshal can limit or change replacement to meet vegetation-management rules (especially on steep hillsides). Replacement ratios in § 18.101.080(A) may be modified for safety	Confirm Fire Marshal requirements and whether replacement ratios will be changed for your parcel (verify with the Community Development Director).
Heritage tree definitions and inventory	The baseline inventory (and which trees are considered “heritage”) affects replacement obligations and mitigation; some site standards reference a 2004/2005 inventory for specific parcels	Verify whether a local heritage tree inventory applies to your lot and whether a heritage‑tree removal permit is required.
Fence/hedge height limits outside parking contexts	The ordinance gives explicit heights for parking-buffer hedges (3.5 ft) but does not publish a single universal fence-height rule for every context in the retrieved text	Fence height allowances may vary by district, street, sight‑distance rules and other chapters. Confirm with Planning or Public Works; “Not found in retrieved materials” for a blanket fence height.
Transformer/pad clearances and screening vs. operational clearances	Screening is required but pad-mounted equipment also has minimum clearance and service access rules (safety, operator clearances) — landscape cannot block safe access	Coordinate screening design with the utility owner (PG&E or other) and show required clearances on plans.
Whether a small single-family addition needs a landscape plan	Single‑story single‑family detached homes are exempt from design review when conforming; but additions or multi-story changes may trigger full landscape submittals (§ 18.64.020)	Check whether your project is exempt from design review; if not, expect to provide full landscape materials.

Plain-English summary (for a homeowner)

If your project is discretionary (design review, new parking area, multi‑unit housing or anything that changes the site significantly), Larkspur will require a landscape plan that shows existing trees, plant types and irrigation, and will enforce parking‑lot planting, buffers next to houses, and screening of mechanical equipment; heritage/native oaks have set replacement ratios and may require a monitoring program (§ 18.64.040, § 18.56.160, § 18.101.080). Expect the Community Development Director or Planning Commission to review or require adjustments so that fences, walls and plantings are integrated with the architecture and public safety rules (§ 18.64.040–050, § 18.16.280) .

Source References

Larkspur Municipal Code, Title 18 — Design review criteria (materials/colors; Walls, Fences and Screening) — § 18.64.050
Larkspur Municipal Code, Title 18 — Required information for design review (landscape plan, existing trees list, irrigation, lighting) — § 18.64.040
Larkspur Municipal Code, Title 18 — Off‑street parking and loading area landscape requirements (including 10% landscaping, 1 tree/6 stalls, 6‑ft frontage strip, 3.5‑ft parking buffer) — § 18.56.160
Larkspur Municipal Code, Title 18 — Screening of activities and mechanical equipment; property maintenance standards — § 18.16.280 (K)
Larkspur Municipal Code, Title 18 — Heritage tree removal and replacement; tree replacement ratios — § 18.101.080(A)
Larkspur Municipal Code, Title 18 — Site‑specific biological/landscaping and monitoring (Housing Element sites / tree replacement, 7‑year monitoring, native species) — § 18.101.090 (Biological/Landscaping)
Larkspur Municipal Code, Title 18 — District regulations referenced: R‑1 (First Residential) § 18.20 ; R‑2 § 18.28 ; R‑3 § 18.32 ; C‑1 § 18.44 ; Planned Development / P‑D § 18.55 .
Larkspur Municipal Code reference to street trees (Public Works/parks rules) — Larkspur Municipal Code §§ 12.16.010–020 (street-tree standards referenced from Title 18) .

Sources

Retrieved passages

Larkspur Zoning Code (Title 18) High relevance
Larkspur Zoning Code (Title 18) High relevance
Larkspur Zoning Code (Title 18) High relevance
Larkspur Zoning Code (Title 18) High relevance
CGBSC § 1096 (Title 18) High relevance
Larkspur Zoning Code (Section 18.16.090) High relevance
Larkspur Zoning Code (§ 2) High relevance
Larkspur Zoning Code (Title 18) High relevance
Larkspur Zoning Code (Title 18) High relevance
Larkspur Zoning Code (Title 18) High relevance
Larkspur Zoning Code (Section 18.36.090) High relevance
CBC § 2 (§ 2) Medium relevance
Larkspur Zoning Code (Section 18.34.030) Medium relevance
Larkspur Zoning Code (Title 18) Medium relevance
Larkspur Zoning Code (Section 18.76.030.) Medium relevance
Larkspur Zoning Code (§ 2) Medium relevance
Larkspur Zoning Code (Title 18) Medium relevance
Larkspur Zoning Code (§ 2) Medium relevance
Larkspur Zoning Code (Title 18) Medium relevance
Larkspur Zoning Code (Chapter 18.51) Medium relevance
Larkspur Zoning Code (Chapter 9.54.) Medium relevance
Larkspur Zoning Code (Title 18) Medium relevance
Larkspur Zoning Code (Title 18) Medium relevance

Cited sections

Official Larkspur code library

Frequently asked questions

Do I need a landscape plan for a small addition to my single‑family house in Larkspur?

If the project is exempt from design review (ground‑level single‑story additions that meet all zoning/district standards) you typically will not need a full design‑review landscape plan; otherwise the design‑review submittal checklist requires a landscape plan showing plant lists, irrigation and existing trees (§ 18.64.020–040) .

What are Larkspur’s parking‑lot landscaping requirements?

For parking lots with 12 or more stalls: at least 10% of the parking lot area must be landscaped; islands, irrigation, 6‑inch curbs protecting planting, a 6‑ft planted street strip (except for necessary driveways), and one tree per six parking spaces are required (§ 18.56.160(B–C)) .

If my commercial site borders homes, what buffer/screen is required?

Where off‑street parking or loading areas adjoin property in an R district the code requires effective screening by fence, hedge or planted buffer of not less than 3.5 ft in height and landscaping between the buffer and the lot line as required (§ 18.56.160(A)) .

How must mechanical equipment (HVAC, backflow devices, transformers) be handled on a site plan?

All exterior mechanical equipment (except window air conditioners) must be screened from public view and adjacent properties to the extent feasible. Screening may be walls, fences, or a combination of fencing and landscaping and is subject to approval by the Community Development Director (§ 18.16.280(K)) .

What are the rules for removing a large native (coast live oak) or other heritage tree?

Heritage tree removal triggers replacement: for certain diameter ranges replacement at 2:1 (for 15–24" removed) and 4:1 (over 24") is required; native species must be used unless Fire Marshal determines replacement is unsafe (§ 18.101.080(A)). Site‑specific standards (for some housing‑element sites) contain additional replacement ratios and a required 7‑year monitoring plan (§ 18.101.090) .

Are there design standards for fences and walls (materials, location, height)?

The design‑review criteria require that walls, fences and screening be integrated with the project design and used to conceal parking, refuse and equipment; the code emphasizes minimizing large uniform retaining walls and reducing visual impact but does not provide a single universal numeric fence height for every context in the retrieved materials — districts and specific situations (traffic sightlines, frontage requirements) add requirements (§ 18.64.050) . Verify fence‑height limits with Planning/Public Works (Not found in retrieved materials as a universal height limit).

Will the City allow non‑native ornamental species in a landscape plan?

For typical development the design criteria and landscape submittal requirements do not ban non‑natives outright, but certain site‑specific standards (especially for oak/grassland habitat replacement and Housing Element sites) require native species and native‑plant nursery stock for replacements (§ 18.101.090). If your project affects native habitat or heritage trees, follow the native‑species direction in the applicable site standard (§ 18.101.090) .

If my project is in a Planned Development (P‑D) what landscaping rules apply?

The P‑D chapter requires that landscaping, parking and other development standards follow the standards of the most similar underlying zoning district unless otherwise established by the PD; the precise development plan must include detailed landscape and planting plans (§ 18.55.100 and § 18.55.030) .

How do street trees fit into the landscape plan?

Title 18 requires coordination with public‑works street‑tree rules; street trees are provided per Larkspur Municipal Code § 12.16.010–020, and Title 18 references that requirement when public improvements are required (§ 18.16 list and references) .

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