Grass Master
Landscaping · Woodinville, WA · License #GRASSM*066DD
How confident can you be in Grass Master?
Are they licensed, bonded, and insured?
Active license, $15,000 bond and $1,000,000 liability on file — checked against WA L&I records, updated daily.
Are they who they say they are?
Not yet verified — this listing hasn't been claimed. Own this business? Claim it free.
Do other pros stand behind them?
No endorsements yet from licensed contractors.
Do they have jobs on record?
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License facts
Grass Master is one of 24 Landscaping contractors registered in Woodinville, registered with WA L&I since 1994. Registered longer than roughly 75% of Landscaping contractors in Woodinville. Current filings: $15,000 surety bond (continuous) and $1,000,000 liability coverage through Jul 1, 2027.
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Mar 4, 1994
- Expiration date
- May 16, 2027
- UBI
- 601517336
- Business type
- Corporation
- Phone
- (425) 867-1117
- Location
- Woodinville, WA 98072
Source: WA L&I contractor registration — checked Aug 15, 2026. Applies to every row above.
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Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| American States Insurance Co | $15,000 | Jul 1, 2024 | Continuous — until canceled |
| American States Insurance Co | $6,000 | Jul 1, 2024 | May 16, 2025 |
| American States Insurance Co | $6,000 | Feb 15, 2002 | May 16, 2025 |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| ALLMERICA FINANCIAL BENEFIT IN | $1,000,000 | PLC INSURANCE LLC | Jul 1, 2026 | Jul 1, 2027 |
What the bond and insurance requirements mean for homeowners
Washington requires specialty contractors to file a $15,000 surety bond with the Department of Labor & Industries as a condition of registration ($30,000 for general contractors). This contractor's current filing shows a $15,000 bond.
The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.
Principals
| Name | Start date |
|---|---|
| Christopher Hood Trewin | Mar 4, 1994 |
| Nicole Christine Cysewski | May 16, 2025 |
| Christopher Trewin | Jan 1, 1980 |
| Sharon Mary Trewin | Jan 1, 1980 |
| Anthony T Dotson | Jan 1, 1980 |
What is a Landscaping contractor licensed to do in Washington?
A landscaping specialty contractor is registered with WA L&I for landscape construction work — planting, grading for landscape purposes, irrigation-adjacent work, retaining features, and similar outdoor improvements. The registration covers landscaping only. The registration requires a $15,000 surety bond and general liability insurance on file with WA L&I. Washington currently lists 24 Landscaping contractors registered in Woodinville.
Other Landscaping contractors in Woodinville, WA
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Gonzalez's Lndscpg Serv LLC
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Jose Gonzalez Landscaping
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License #JOSEGGL876QQ · $15,000 bond
Kasper's Lawn & Yard Care LLC
Landscaping · Woodinville, WA
License #KASPELY964Q9 · $30,000 bond
Kinssies Landscaping
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License #KINSSL*922LC · $15,000 bond
NW Bloom
Landscaping · Woodinville, WA
License #NWBLOB*781N3 · $15,000 bond
Browse the directory
Built from Washington State L&I public records, updated Aug 15, 2026. Subser doesn't do star ratings or reviews — just verified records.