Kornerstone Concrete
Concrete · Auburn, WA · License #KORNEC*811L7
Registration expired per WA L&I as of Nov 19, 2023.
Kornerstone Concrete is one of 30 Concrete contractors registered in Auburn, registered with WA L&I since 2019. Registered longer than roughly half of Concrete contractors in Auburn. Principals on record since 2019.
How confident can you be in Kornerstone Concrete?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Nov 19, 2023.
Are they who they say they are?
Not yet verified — Kornerstone Concrete 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 Auburn.
Do they have jobs on record?
Not yet measured — Kornerstone Concrete 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
- Jun 27, 2019
- Expiration date
- Nov 19, 2023
- Suspend date
- Nov 15, 2022
- UBI
- 604467918
- Business type
- Individual
- Phone
- (425) 496-4125
- Location
- Auburn, WA 98001
Source: WA L&I contractor registration — checked Nov 13, 2026. Applies to every row above.
Registration lapsed Nov 2023 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
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).
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 |
|---|---|
| Sosefo Nusi Tatola | Jun 27, 2019 |
What is a Concrete contractor licensed to do in Washington?
A concrete specialty contractor is registered with WA L&I to form, pour, and finish concrete — foundations, slabs, driveways, sidewalks, and similar flatwork or structural concrete. The registration covers concrete work only. Washington requires a $15,000 surety bond and general liability insurance for this registration. Washington currently lists 30 Concrete contractors registered in Auburn.
Looking for reviews of Kornerstone Concrete?
Subser doesn't have reviews or star ratings. This page shows Kornerstone Concrete's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Kornerstone Concrete? Claim the listing free. Worked with Kornerstone Concrete? Endorse them from your own listing.
Other Concrete contractors in Auburn, WA
Dean's Concrete Installatn LLC
ListedConcrete · Auburn, WA
License #DEANSCI818NA · $15,000 bond
Diamond Concrete LLC
ListedConcrete · Auburn, WA
License #DIAMOCL829MT · $30,000 bond
Home Town Concrete
ListedConcrete · Auburn, WA
License #HOMETC*994MS · $30,000 bond
J & P Concrete LLC
ListedConcrete · Auburn, WA
License #JPCONPC887QZ · $15,000 bond
Mark Morris INC
ListedConcrete · Auburn, WA
License #MARKMI*999Q9 · $15,000 bond
Medina's Company Concrete
ListedConcrete · Auburn, WA
License #MEDINCC856DB · $15,000 bond
NW Concrete LLC
ListedConcrete · Auburn, WA
License #NWCONCL811RD · $15,000 bond
O&t Concrete LLC
ListedConcrete · Auburn, WA
License #OTCONCL835JO · $15,000 bond
Browse the directory
Built from Washington State L&I public records, updated Nov 13, 2026. Subser doesn't do star ratings or reviews — just verified records.