Last updated: April 30, 2026

How to Start a Landscaping Business in Washington State (2026)

Three things make landscaping in Washington structurally different from most states. First, landscape services are taxed under Washington’s Retailing B&O classification AND retail sales tax under WAC 458-20-226 – you collect sales tax on the full contract price for nearly every typical landscape job, including mowing, trimming, pruning, mulching, aerating, fertilizing, planting, sodding, and pesticide application. That single rule sets WA apart from PA, FL, NC, and the majority of states. Second, workers’ comp is monopolistic: every landscape employer must buy coverage through the L&I state fund – private workers’ comp insurance is illegal in Washington, one of only four such states. Third, the L&I specialty contractor surety bond rose from $6,000 to $15,000 effective July 1, 2024, so older guides quoting $6K are wrong (Chapter 18.27 RCW).

Layer the labor side on top: state minimum wage $17.13 in 2026, Seattle $21.30, mandatory PFML at 1.13%, mandatory WA Cares 0.58% on employee wages, plus L&I per-hour premiums for landscape risk classes – and Washington landscape pricing has to be modeled carefully. The flip side: dense Puget Sound housing, year-round western Washington seasons, and Climate Commitment Act-driven native-plant/drought-tolerant demand keep work flowing.

Washington Landscaping Requirements at a Glance

Requirement	Agency	Cost	Timeline
LLC Certificate of Formation	WA Secretary of State	$200 online / $180 paper + $70 annual report	Same-day online
UBI / Business License Application	DOR Business Licensing Service	$90 + city endorsements	~10 business days
L&I Specialty Contractor Registration (RCW 18.27)	L&I	$15,000 surety bond + $50K/100K/100K liability + registration fee	Required for irrigation, hardscape, drainage, retaining walls, paver work
WSDA Commercial Pesticide Applicator (Category 03 Ornamental & Turf)	WSDA	$250 license + $25/exam	Required for ANY commercial pesticide use
Workers’ Compensation (monopolistic)	L&I state fund	Per worker hour by risk class (0301 Landscape Contractor / 4900 Yard Maintenance)	Before first employee starts
Retailing B&O Tax + Retail Sales Tax	WA DOR (WAC 458-20-226)	0.471% B&O + 6.5% state + local sales tax on full contract price	Collect from first job
WA 811 – Call Before You Dig (RCW 19.122)	Washington 811	Free	2-10 business days before any excavation deeper than 12″
Seattle SMC 25.11 Tree Code (if working in Seattle)	Seattle SDCI / SDOT	Permit fees vary by tier and tree size	Required for tree work in Seattle
PFML / WA Cares / UI / Min wage compliance	ESD / WA Cares / L&I	1.13% PFML + 0.58% WA Cares + UI on $78,200 + $17.13 (state) or $21.30 (Seattle) min wage	From first employee

How to Start a Landscaping Business in Washington (Step by Step)

Step 1: Form Your Washington LLC and Get Your UBI

File a Certificate of Formation through the Secretary of State CCFS portal at ccfs.sos.wa.gov: $200 online or $180 paper. Then file the DOR Business License Application ($90) to receive your UBI – the nine-digit identifier that registers you with DOR, ESD, L&I, and selected city licensing endorsements in one filing. Add Seattle, Tacoma, Spokane, Bellevue, or other city endorsements depending on where you operate.

Get a free EIN from IRS.gov immediately – you need it for the Business License Application, payroll, and bank accounts.

Step 2: Register as an L&I Specialty Contractor (For Almost Everything Except Pure Mowing)

Washington’s Chapter 18.27 RCW requires construction contractor registration for anyone who installs, alters, or repairs a structure or improvement to real property. For landscapers, that captures a wide swath of typical work:

• Irrigation systems (installation, repair, modification)
• Retaining walls over 4 feet (or any height in some jurisdictions)
• Hardscape – patios, walkways, paver installations
• Drainage installations – French drains, dry wells, regrading
• Tree planting that involves grading or excavation
• Outdoor living installations – pergolas, fire pits, fences over 7 feet

What does not require contractor registration: pure lawn mowing, hedge trimming, leaf cleanup, fertilization, weed control, pesticide application, plant maintenance. If your business is purely “yard maintenance,” you can skip contractor registration. If you offer any of the above hardscape/irrigation services, you need to register.

Specialty contractor bond requirement: $15,000 surety bond (raised from $6,000 effective July 1, 2024 – older online guides are out of date). General contractor bond is now $30,000. Plus minimum liability insurance of $50,000 bodily injury / $100,000 property damage / $100,000 aggregate. Specialty contractors are limited to a single trade and cannot subcontract work outside that trade. List your specialty trade from the 63 classifications under L&I form F625-001-000 (WAC 296-200A-016 sets the trade list).

Step 3: Get Your WSDA Commercial Pesticide Applicator License

Any commercial application of pesticides – including herbicides, weed killers, pre-emergents, fungicides, insecticides, moss killers, and many fertilizer-pesticide combos – requires licensing through the Washington State Department of Agriculture (WSDA) under RCW 17.21. The structure:

• Commercial Applicator License – the individual applying or supervising, $250/year
• Commercial Pesticide Operator License – the business that employs commercial applicators (separate license)
• Laws and Safety Exam – $25 testing fee, required for all license types
• Category 03 – Ornamental and Turf – the most common category for landscapers; pass the Cat 03 exam ($25) in addition to Laws and Safety
• Other categories as needed: Right-of-Way, Aquatic, Demonstration & Research, Wood Treatment, Forest, etc.

Recertification: 5-year cycle. Earn continuing education credits through Washington State University Pesticide Education Program (PEP) recertification courses or pass the exams again.

Operating without a license while applying restricted-use or general-use pesticides commercially exposes you to WSDA fines and potential federal EPA penalties. The WSDA pesticide investigators do enforce, and complaints from neighbors or customers regularly trigger investigations.

Step 4: Get Insurance and L&I Workers’ Compensation

General liability insurance: $1M/$2M is standard for landscape contractors. Most commercial customers, HOAs, and property managers require Certificates of Insurance before contract signing.

Commercial auto insurance: Required for any vehicles registered to the business or used commercially. Trailers should be scheduled separately.

Inland marine / equipment floater: Covers mowers, trimmers, blowers, and other portable equipment that ISO commercial property policies typically exclude. Equipment theft from job sites is a common loss.

Workers’ Compensation through L&I: Mandatory for any employer with one or more employees – and it must come from the L&I state fund. Private workers’ comp is illegal in Washington. Landscape risk classes:

• 0301 Landscape Contractor – covers most landscape construction, hardscape, irrigation work
• 4900 Yard / Landscape Maintenance – covers mowing, trimming, basic maintenance
• 0507 Tree Service – higher rate for arborist/tree work

L&I rates are quoted per worker hour, not as a payroll percentage. Landscape rates run several dollars per hour and tree service is among the highest non-construction rates – this should be priced into your hourly billable rate. The Medical Aid and Stay-at-Work fund portions can be partially withheld from employee paychecks; the Accident Fund is paid entirely by the employer.

Step 5: Register for B&O and Retail Sales Tax (Landscape Services Are Taxed)

This is the single biggest WA landscape gotcha. Under WAC 458-20-226, landscape and horticultural services for consumers are taxable as retail sales:

“Landscape and horticultural services which are retail sales include grading, filling, leveling, planting, seeding, sodding, removing, cutting, trimming, pruning, mulching, aerating, applying chemicals, watering, and fertilizing to establish, promote, or control the growth of trees, shrubs, flowers and related vegetation.”

You owe Retailing B&O at 0.471% on gross receipts AND must collect retail sales tax at the destination rate (state 6.5% + local) on the full contract price. Sales tax is destination-based, so if you mow a lawn in Bellevue, you charge the Bellevue rate; if you install a paver patio in Seattle, you charge the Seattle rate (~10.35%).

Narrow exemption: Lawn mowing and trimming for properties owned by Fannie Mae or Freddie Mac are exempt from sales tax (they’re still subject to Retailing B&O). This exemption rarely applies to typical residential or commercial accounts.

Vendor sales tax: You owe sales tax on the tools, fuel, mowers, and supplies you buy that aren’t resold to your customer. Plants, mulch, and pavers that you install for the customer are typically purchased on resale certificate (no sales tax to vendor) and then sales tax is collected from the customer on the full installed price.

Step 6: Use Washington 811 Before Every Excavation

Washington’s Dig Law (RCW 19.122) requires anyone digging deeper than 12 inches to call 811 or submit at callbeforeyoudig.org at least 2 business days before excavating (no more than 10 business days). Locates are free. Applies to any landscape work below 12 inches: tree planting (most), fence post installation, irrigation trenching, retaining wall footings, stump grinding into the root crown, regrading projects.

The day of notice, weekends, and legal holidays do not count toward the 2-day waiting period. Underground facility owners have those 2 business days to mark their lines. Hitting an unmarked line you didn’t request a locate for can expose you to repair costs (gas line strikes can run six figures) plus civil and criminal liability for negligence. Document every locate ticket and keep them on file – if a marked line is hit despite proper marking, the locate ticket protects you.

Step 7: Comply with City Tree and Vegetation Ordinances

Seattle (SMC 25.11 – Tree Protection Code)

Seattle Municipal Code Chapter 25.11 regulates tree work on private property (administered by Seattle Department of Construction and Inspections – SDCI) and in the public right-of-way (Seattle Department of Transportation – SDOT). Key provisions for landscape contractors:

• ISA-certified arborist required: Tree service providers in Seattle must have at least one employee or person on retainer who is currently credentialed as an International Society of Arboriculture (ISA) Certified Arborist trained to ANSI A-300 standards.
• Tree tier classification: Tier 2 includes most species at 24-inch DSH (diameter at standard height) and up. Tier 3 and Tier 4 trees have varying restrictions.
• Tier 4 removal allowance: Up to two Tier 4 trees can be removed per property in a 3-year period without a permit in certain zones if the tree is hazardous, dead, in serious infrastructure conflict, or has serious insect/disease damage.
• Tree service provider registration: Required with SDCI to perform tree work in Seattle.

Eastside Cities

Bellevue, Kirkland, Redmond, Sammamish, and Mercer Island have private-tree ordinances comparable in spirit to Seattle’s. Bellevue’s Land Use Code Title 20 protects “significant trees.” Always verify with the local Planning or Development Services department before tree work in these cities.

Tacoma and Spokane

Lighter regulation than Seattle/Eastside. Both cities require permits for street trees and park trees but have looser rules for private property. Spokane Municipal Code chapter 12.02 covers street trees and Tacoma covers public-tree management through Tacoma Public Works.

Washington’s Climate-Driven Landscape Market

Western Washington (Seattle metro, Tacoma, Olympia, Bellingham, Vancouver) has a Mediterranean-modified marine climate: mild wet winters, dry warm summers, growing season nearly year-round in lower elevations. That extends landscape contracting work into months when much of the country is dormant. Spring/early summer is peak (April-July); fall cleanup runs through November. Even January has occasional billable maintenance work.

Eastern Washington (Spokane, Tri-Cities, Yakima, Wenatchee) has a continental climate with cold winters and hot dry summers – more snow, shorter growing season, but irrigation and water management are core service offerings due to low rainfall.

Three demand drivers shape the market:

1. Climate Commitment Act and water conservation: Native-plant landscape design, lawn-replacement projects, and drought-tolerant gardens are growing as utilities and municipalities offer rebates for turf removal. Saving Water Partnership (Seattle and ~25 other utilities) funds residential conversions.
2. HOA-driven demand on the Eastside: Bellevue, Sammamish, Issaquah, Redmond, and Snoqualmie Ridge have heavy HOA penetration. Recurring maintenance contracts run year-round.
3. Tech-worker premium pricing: Microsoft, Amazon, Meta, and Google employee concentrations on the Eastside support landscape design and high-end installation pricing well above Seattle proper.

Cost to Start a Landscaping Business in Washington

Item	Solo / Mowing-Only Start	Full-Service Landscape Contractor
LLC + UBI + EIN	$290	$290
L&I Contractor Registration + bond	$0 (skip if mowing only)	$15,000 bond + ~$200/yr registration
WSDA Commercial Applicator (if spraying)	$300 (license + 2 exams)	$300+
General liability insurance (annual)	$600-$1,200	$1,500-$3,500
Commercial auto + inland marine	$1,200-$2,000	$2,500-$5,000
L&I workers’ comp (per FTE)	N/A solo	$2,500-$6,000/year per FTE
Equipment (mower, trimmer, blower, trailer)	$3,000-$8,000	$15,000-$50,000
Truck (if buying)	$5,000+	$25,000+
Total first-year out-of-pocket	~$10K-$17K	~$50K-$100K+ (excluding bond collateral)

Note that the $15,000 specialty contractor bond is typically issued by a surety for an annual premium of $100-$400 if your credit is acceptable – you don’t lock up the full $15K in cash.

Related Washington Business Guides

← Back to all Washington business guides

Other industry guides for Washington:

• Cleaning Service in Washington
• Food Truck in Washington
• Daycare in Washington
• HVAC in Washington
• Hair Salon in Washington
• Private Investigator in Washington

Frequently Asked Questions

Do I need a contractor’s license to start a landscaping business in Washington?

It depends on what you do. Pure mowing, trimming, weed control, fertilization, leaf cleanup, and basic maintenance do NOT require contractor registration. But once you do irrigation, retaining walls, hardscape (patios, walkways, paver installations), drainage, regrading, or fence/pergola installation, you must register as an L&I Specialty Contractor under RCW 18.27. The specialty contractor surety bond is $15,000 (raised from $6,000 on July 1, 2024) plus minimum liability insurance of $50K bodily injury / $100K property damage / $100K aggregate.

Are landscaping services taxable in Washington State?

Yes – and this is one of the most important things to understand. Under WAC 458-20-226, landscape services for consumers are subject to Retailing B&O tax (0.471%) AND retail sales tax (state 6.5% plus local) on the FULL contract price. This includes mowing, trimming, pruning, mulching, planting, sodding, fertilizing, aerating, and pesticide application. You collect sales tax at the destination rate (the customer’s job-site address). The only narrow exemption is mowing/trimming for Fannie Mae or Freddie Mac-owned property. This puts WA in a small minority of states that tax landscape services – PA taxes some lawn care, but most states (CO, NC, FL, TX) don’t.

Do I need a pesticide license to spray weeds in Washington?

Yes if you’re applying any pesticide commercially – including herbicides, weed killers, pre-emergents, fungicides, insecticides, and most moss killers. The WSDA Commercial Applicator License is $250/year, and you need to pass the Laws and Safety Exam ($25) plus the Category 03 Ornamental and Turf Exam ($25). You’ll also need a Commercial Pesticide Operator License for the business itself if you employ applicators. Recertification is on a 5-year cycle through Washington State University’s Pesticide Education Program. Operating without a license while applying pesticides commercially exposes you to WSDA fines and EPA enforcement.

How much is workers’ comp for a landscape business in Washington?

Workers’ comp must come from the L&I state fund – private insurance is illegal. Premiums are calculated per worker hour, not as a payroll percentage. The two main landscape risk classes are 0301 Landscape Contractor (hardscape, irrigation, planting) and 4900 Yard/Landscape Maintenance (mowing, basic maintenance). Tree service is class 0507 and runs at the highest rate. Annual cost per full-time landscape employee typically lands in the $2,500-$6,000 range depending on classification and your experience-rated factor (after about three years). New employers pay 115% of their industry’s average rate.

Do I have to call 811 before tree planting?

Yes – if the planting hole is deeper than 12 inches, RCW 19.122 requires you to call WA 811 (or use callbeforeyoudig.org) at least 2 business days before digging. Free service. The 2-day countdown excludes the day of notice, weekends, and legal holidays. Same rule applies to fence post installation, irrigation trenching, retaining wall footings, and stump grinding into the root crown. Hitting an unmarked utility line you did request locates for protects you; hitting one you didn’t request locates for exposes you to repair costs (gas strikes can run six figures) plus damage liability.

Can I work as a tree service in Seattle without an arborist on staff?

No. Seattle Municipal Code 25.11 requires tree service providers operating in Seattle to have at least one employee or person on retainer who is a currently credentialed ISA Certified Arborist trained to ANSI A-300 standards. The arborist requirement applies to most tree work on private property (administered by SDCI) and on the public right-of-way (administered by SDOT). Bellevue, Kirkland, Redmond, Sammamish, and Mercer Island have similar private-tree codes. Tacoma and Spokane have looser rules for private property but still require permits for street and park trees.

What does it cost to start a landscaping business in Washington?

A solo mowing/maintenance start runs roughly $10,000-$17,000 in the first year (LLC+UBI $290, WSDA license if spraying $300, general liability $600-$1,200, commercial auto $1,200-$2,000, equipment $3,000-$8,000, truck if needed). A full-service landscape contractor with hardscape and irrigation services runs $50,000-$100,000+ in first-year capital, plus the $15,000 specialty contractor bond (typically $100-$400/year in surety premium, not full collateral if your credit is acceptable). Add roughly $2,500-$6,000 per FTE per year for L&I workers’ comp depending on risk class.