Mark William Construction
Cabinets, Millwork and Finish Carpentry · Mercer Island, WA · License #MARKWWC797BM
Registration expired per WA L&I as of Dec 11, 2025.
Principals on record since 2021.
How confident can you be in Mark William Construction?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Dec 11, 2025.
Are they who they say they are?
Not yet verified — Mark William Construction hasn't claimed this listing. Own this business? Claim it free.
Do other pros stand behind them?
No endorsements yet from other licensed contractors in Mercer Island.
Do they have jobs on record?
Not yet measured — Mark William Construction hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.
Subser doesn't do star ratings or reviews — just verified records. What do these mean?
License facts
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Mar 18, 2021
- Expiration date
- Dec 11, 2025
- UBI
- 604578656
- Business type
- Individual
- Phone
- (206) 841-5639
- Location
- Mercer Island, WA 98040
Source: WA L&I contractor registration — checked Nov 10, 2026. Applies to every row above.
Registration lapsed Dec 2025 per WA L&I records.
Is this your business? Claim it free to verify ownership — takes about two minutes.
Claim this free listingBond & insurance on file
What the bond and insurance requirements mean for homeowners
Registration as a specialty contractor in Washington requires a $15,000 surety bond on file with the Department of Labor & Industries; the general contractor requirement is $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 |
|---|---|
| Mark William St. Mary | Jan 14, 2021 |
What is a Cabinets, Millwork and Finish Carpentry contractor licensed to do in Washington?
This specialty registration covers building and installing cabinets, millwork, trim, and other finish carpentry. It is limited to this trade; broader remodeling work would fall under a general contractor registration. A $15,000 surety bond and general liability insurance, filed with WA L&I, are required for this registration.
Looking for reviews of Mark William Construction?
Subser doesn't have reviews or star ratings. This page shows Mark William Construction's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Mark William Construction? Claim the listing free. Worked with Mark William Construction? Endorse them from your own listing.
Browse the directory
- All contractors in Mercer Island, WA
- Cabinets, Millwork and Finish Carpentry contractors in Mercer Island
- Cabinets, Millwork and Finish Carpentry contractors in Washington
- General in Mercer Island
- Electrical in Mercer Island
- Painting/Wallcovering in Mercer Island
- Landscaping in Mercer Island
- Plumbing in Mercer Island
Built from Washington State L&I public records, updated Nov 10, 2026. Subser doesn't do star ratings or reviews — just verified records.