Tom Wirtz Siding CO
Siding · Renton, WA · License #TOMWIS*225ND
Registration expired per WA L&I as of Jul 7, 2020.
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Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Jul 7, 2020.
Are they who they say they are?
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Do they have jobs on record?
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License facts
Tom Wirtz Siding CO is one of 27 Siding contractors registered in Renton, registered with WA L&I since 1978. Registered longer than roughly 75% of Siding contractors in Renton. Principals on record since 1978.
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Aug 4, 1978
- Expiration date
- Jul 7, 2020
- Suspend date
- Jul 4, 2020
- UBI
- 600287541
- Business type
- Individual
- Phone
- (425) 253-3828
- Location
- Renton, WA 98058
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
What the bond and insurance requirements mean for homeowners
To register as a specialty contractor in Washington, a business must file a $15,000 surety bond with the Department of Labor & Industries; general contractors file $30,000.
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 |
|---|---|
| Thomas (tom) N Wirtz | Aug 4, 1978 |
What is a Siding contractor licensed to do in Washington?
A siding specialty contractor is registered with WA L&I to install and repair exterior siding — fiber cement, vinyl, wood, and similar cladding, along with associated trim and weather barriers. As a condition of registration, contractors in this category file a $15,000 surety bond and proof of general liability insurance with WA L&I. Washington currently lists 27 Siding contractors registered in Renton.
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Built from Washington State L&I public records, updated Aug 15, 2026. Subser doesn't do star ratings or reviews — just verified records.