Estimate your 2026 Seattle landscaping project — sod, plants, trees, irrigation, hardscape (pavers, retaining walls), and site prep. The calculator factors Seattle's clay-heavy soil, common sloped lots, and current nursery pricing from Swanson's, Molbak's, and Flower World. Full front-yard redesigns with hardscape typically land at $12,000-$25,000.
Planning a deck or fence alongside? Run the deck calculator or fence calculator in the same session — bundling saves $800-$1,500 in mobilization cost and lets us schedule heavy-equipment delivery once.
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Hardscape Features
Add patios, walkways, retaining walls, and more
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Additional Features
Irrigation, sod, mulch, and site preparation
Professional irrigation system installation
Professional sod installation for instant lawn
Professional mulch installation for garden beds
Grading, clearing, and soil preparation
Your Estimate
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Enter your project details to get started
How Our Landscaping Cost Calculator Works
Professional landscaping project estimates for Seattle and Pacific Northwest properties
Accurate Cost Estimation
Our landscaping calculator provides detailed cost estimates for Seattle-area residential landscaping projects. The calculator considers
project scope (square footage of area to landscape), project type (basic planting and mulch, hardscaping with pavers or stone, irrigation system
installation, lawn installation or renovation, retaining walls, or comprehensive landscape design), material quality selections, and site conditions.
We base estimates on 2026 Seattle market rates with material pricing from local suppliers including Sky Nursery, Swansons Nursery, Wells Medina,
and landscape supply yards like Pacific Topsoils. Labor rates reflect experienced landscaping crews at $45-75/hour depending on specialization,
with hardscaping and irrigation requiring higher-skilled labor than basic planting. The calculator accounts for all components of professional
landscaping: site preparation and grading, soil amendment (critical in Seattle where native soil is often poor-quality glacial till or heavy clay),
plant materials selected for Pacific Northwest climate, hardscaping materials, irrigation components, and mulch or decorative rock. Unlike simplified
estimators, we factor in waste on hardscaping materials (typically 5-10%), plant mortality replacement (reputable installers warranty plants for
one year), and the premium for design services if opting for custom landscape design versus installation only.
What The Calculator Includes
Every landscaping estimate includes comprehensive project breakdowns tailored to your selected project type. For planting projects, materials
include plants (trees, shrubs, perennials selected for Seattle's climate), topsoil and compost for soil amendment (typically 2-3 inches over planting
beds), mulch (2-3 inches depth for weed suppression and moisture retention), landscape fabric if requested, edging materials, and fertilizers. For
hardscaping, materials encompass base rock for proper drainage (critical in Seattle's wet climate), bedding sand, pavers or flagstone, polymeric
sand for joints, edge restraints, and sealers if appropriate. Irrigation systems include controllers, valves, PVC piping, sprinkler heads or drip
emitters, backflow preventers (required by Seattle Public Utilities), rain sensors, and trenching/boring for pipe installation. Labor encompasses
site preparation (removing existing vegetation, rough grading), soil preparation (tilling amendments into existing soil), installation of irrigation
if included, hardscape installation with proper base preparation, planting (proper technique with root ball preparation), mulching, and complete
cleanup. Our calculator factors in Seattle-specific requirements: native soil is often terrible (heavy clay or rocky glacial till) requiring significant
amendment; drainage is critical given our rainfall; and plant selection must account for our mild, wet winters and dry summers.
Seattle-Specific Considerations
Seattle's climate and regulations create unique landscaping considerations our calculator addresses. The Pacific Northwest's wet winters
and relatively dry summers favor specific plants - rhododendrons, azaleas, ferns, and Japanese maples thrive here while many sun-loving perennials
struggle. Our plant costs reflect locally-adapted species from regional nurseries. Seattle's soil is notoriously challenging: heavy clay in many
areas causing poor drainage and compaction; rocky glacial till in North Seattle making digging difficult; thin topsoil over hardpan requiring amendment
for plant success. The calculator factors in realistic soil amendment costs. Drainage is critical in landscaping projects - Seattle's 38 inches of
annual rainfall creates standing water issues without proper grading and drainage solutions. Many projects require French drains or catch basins,
especially for hardscaping. Seattle's water conservation efforts encourage drought-tolerant plants and efficient irrigation - modern drip systems
or MP rotator sprinklers use 30-50% less water than traditional spray heads. Seattle Public Utilities requires backflow preventers on all irrigation
systems (add $150-300 to irrigation costs). Many Seattle neighborhoods have tree ordinances protecting significant trees and requiring permits for
removal - factor in arborist consultations if large trees are present. Washington state requires landscape contractors to be licensed and properly
insured - never hire unlicensed landscapers as liability issues frequently arise. The calculator reflects living wage requirements for Seattle workers,
ensuring fair compensation for skilled professionals.
Using The Calculator Effectively
For accurate estimates, measure the area you plan to landscape in square feet. For irregular shapes, break into sections and sum the totals.
Select project type matching your goals: basic landscaping (planting beds with shrubs and perennials, mulch, basic preparation at $5-12/sq ft);
premium landscaping (specimen plants, extensive soil amendment, irrigation, sophisticated design at $15-30/sq ft); hardscaping (patios, walkways,
retaining walls at $20-50/sq ft depending on materials); irrigation installation ($1.50-3/sq ft depending on system type); lawn installation (sod
or hydroseeding at $2-4/sq ft). Indicate site conditions honestly: easy access allows efficient work; difficult access (narrow side yards, steep
slopes, no equipment access) increases labor significantly; poor soil conditions (heavy clay, compacted fill, rocky conditions) require more amendment
and preparation. For plant selection, choose quality tier based on desired impact: basic (mostly groundcovers and small shrubs, limited variety);
standard (mix of sizes, good variety, moderate specimens); premium (specimen trees and shrubs, extensive plant palette, high-end selections). For
hardscaping, select materials based on aesthetic and budget: basic pavers or concrete ($8-15/sq ft); mid-grade pavers or flagstone ($15-30/sq ft);
premium natural stone or specialty pavers ($30-50/sq ft). The calculator instantly updates as you modify specifications, helping you understand how
choices affect budget. All estimates include breakdowns of materials, labor, equipment, and realistic project timelines typically 2-7 days for most
residential projects, with complex installations taking longer.
Frequently Asked Questions
When is the best time to do landscaping in Seattle?
Fall (September-November) is ideal for planting in Seattle as plants establish root systems during wet winter months before summer heat. Spring (March-May) is the second-best season with good soil moisture but plants have less establishment time before summer. Summer landscaping works but requires diligent irrigation. Avoid winter (December-February) for planting as ground may be waterlogged. Hardscaping can proceed year-round but is easier when ground isn't saturated.
What plants work best in Seattle landscapes?
For Seattle's climate, excellent choices include: shade plants (rhododendrons, azaleas, ferns, hostas, Japanese maples); evergreen shrubs (boxwood, Oregon grape, camellia, pieris); drought-tolerant perennials (lavender, sedum, ornamental grasses); native plants (sword fern, salal, vine maple, ocean spray). Avoid plants requiring hot, dry conditions or alkaline soil. Choose plants rated for USDA Zone 8b (Seattle's climate zone). Consider microclimates - south-facing areas get more sun while north sides stay shady and wet.
Do I need irrigation in Seattle despite the rain?
Yes, irrigation is valuable in Seattle landscapes. While we get 38 inches of annual rainfall, only 5-6 inches fall during summer (June-September) when plants need water most. Established native plants survive without irrigation, but lawns and most landscape plants require supplemental watering in summer. Modern drip irrigation or MP rotator systems use water efficiently, costing $300-800 to run seasonally while protecting your landscape investment worth thousands. Many HOAs require green lawns, necessitating summer irrigation.
Why Trust Our Calculator?
Our interior painting cost calculator is built by Kolmo Construction, a licensed general contractor (License #KOLMOC*852PL) serving Seattle since 2008. We've completed over 500 interior painting projects throughout King County, from single-room refreshes to whole-home transformations. Our estimates reflect real-world costs from actual projects, not theoretical calculations. We maintain relationships with major paint suppliers, understand Seattle's permit requirements intimately, and employ only licensed, insured professionals. Every estimate includes a detailed breakdown of materials and labor, showing you exactly where your money goes. We stand behind our estimates - when you request a formal quote, we honor the calculator's projections for projects matching the described conditions.
What this calculator captures
Common Seattle 2026 price bands by scope. Sod is $1.50-$2.50/sq ft, paver patios $18-$35/sq ft, irrigation $2,500-$5,000, plants $25-$300 each depending on size.
Sod, full planting plan, irrigation with WiFi controller, mulch beds, pathway. Typical Seattle whole-yard refresh.
Full redesign + hardscape
$25,000+
Paver patio, retaining walls, regrading, mature specimen plantings, irrigation, lighting. Common on sloped Queen Anne or West Seattle lots.
Using this calculator
Does this include site prep and regrading?
Yes — toggle 'site prep required' to add grading ($5-$10/sq ft), topsoil amendment, and debris removal. On Seattle's clay-heavy and often sloped lots this is usually non-optional. Skipping site prep is the fastest way to kill new plantings and have sod fail in year one.
How does it handle sloped yards requiring retaining walls?
Hardscape section offers block retaining walls (Allan Block, Belgard Celtik) at $40-$70/face-ft and natural-stone dry-stack at $80-$180/face-ft. Walls over 4 ft require engineering and typically a permit in Seattle — the calculator flags the 4-ft threshold and adds an engineering line.
Are plants priced at Seattle-nursery retail?
Yes — reflects common Seattle-area nurseries (Swanson's, Molbak's, Flower World) at catalog rates. 1-gal perennials $15-$25, 5-gal shrubs $45-$85, 15-gal trees $150-$300. Mature B&B specimens (>2 in caliper) are quoted separately. If you source your own plants, subtract the plant-material line.
Does it include irrigation controller and water hookup?
Yes — includes valves, zones, lines, heads, WiFi controller (Rachio or Hunter Hydrawise), and hookup to your existing hose bib or a new dedicated line. If you need a new backflow preventer for code compliance, toggle 'backflow installation' to add $350-$600.
Can I model a phased install?
The calculator returns a single total. For phased work (e.g. hardscape year one, planting year two) run it twice at each phase. Splitting across years typically costs 5-12% more total because crew mobilization and equipment rental happen twice — we'll price a phased plan more tightly via direct quote.
