Thorne Services
Excavation, Grading and Land Clearing · Kingston, WA · License #THORNS*097C2
Active
State-verifiedWhat does verified mean?
- State-verified — Checked against WA L&I records, updated daily.
- Owner-verified — The business claimed this listing and verified ownership — free. Claim this listing
- Proven on Subser — The business runs real jobs through Subser — measured performance, not reviews.
License facts
Thorne Services is one of 2 Excavation, Grading and Land Clearing contractors registered in Kingston, registered with WA L&I since 1991.
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Feb 22, 1991
- Expiration date
- Mar 11, 2028
- UBI
- 601301752
- Business type
- Individual
- Phone
- (360) 683-2545
- Location
- Kingston, WA 98346
Source: WA L&I contractor registration — verified Aug 13, 2026. Applies to every row above.
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Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| Contractors Bonding & Insurance Co | $30,000 | Mar 11, 2026 | Continuous — until canceled |
| Contractors Bonding & Insurance Co | $12,000 | Feb 21, 2002 | Mar 11, 2026 |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Ohio Cas Ins Co | $1,000,000 | LIBERTY MUTUAL AGENCY CORP | Feb 21, 2016 | Feb 21, 2027 |
What the bond and insurance requirements mean for homeowners
A $15,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for specialty contractors in Washington (general contractors file $30,000). This contractor's current filing shows a $30,000 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 |
|---|---|
| Dennis Alan Thorne | Jan 1, 1980 |
What is a Excavation, Grading and Land Clearing contractor licensed to do in Washington?
This specialty registration covers excavation, grading, and land clearing — site preparation, trenching, and earthmoving. It is limited to this trade. Washington requires a $15,000 surety bond and general liability insurance for this registration. Washington currently lists 2 Excavation, Grading and Land Clearing contractors registered in Kingston.
Browse the directory
Built from Washington State L&I public records, updated Aug 13, 2026. No star ratings or reviews — verification only.