Mironyuk Cornerstone LLC
Masonry · Kirkland, WA · License #MIRONCL854O2
Registration expired per WA L&I as of Nov 16, 2024.
Mironyuk Cornerstone LLC is one of 6 Masonry contractors registered in Kirkland, registered with WA L&I since 2015. Principals on record since 2015.
How confident can you be in Mironyuk Cornerstone LLC?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Nov 16, 2024.
Are they who they say they are?
Not yet verified — Mironyuk Cornerstone LLC 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 Kirkland.
Do they have jobs on record?
Not yet measured — Mironyuk Cornerstone LLC 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
- Sep 22, 2015
- Expiration date
- Nov 16, 2024
- UBI
- 603363915
- Business type
- Limited Liability Company
- Phone
- (206) 465-5021
- Location
- Kirkland, WA 98034
Source: WA L&I contractor registration — checked Nov 14, 2026. Applies to every row above.
Registration lapsed Nov 2024 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 |
|---|---|
| Ruvim Vitalyevich Mironyuk | Sep 22, 2015 |
| Ruvim Vitalyevich Mironyuk | Sep 22, 2015 |
What is a Masonry contractor licensed to do in Washington?
A masonry specialty contractor is registered with WA L&I to lay brick, block, and stone — walls, chimneys, veneer, and similar masonry construction. The registration covers masonry only. A $15,000 surety bond and general liability insurance, filed with WA L&I, are required for this registration. Washington currently lists 6 Masonry contractors registered in Kirkland.
Looking for reviews of Mironyuk Cornerstone LLC?
Subser doesn't have reviews or star ratings. This page shows Mironyuk Cornerstone LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
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Built from Washington State L&I public records, updated Nov 14, 2026. Subser doesn't do star ratings or reviews — just verified records.