Washington contractor
SILVERBACKS CONCRETE
First registered in Washington on September 15, 2021
- License number
- SILVEC*796ON
- UBI
- 604786842
- Trade
- Concrete and masonry(all concrete and masonry contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · CONCRETE
- City
- SPOKANE, WA(all contractors in Spokane)
- Phone
- (509) 768-6331
Current verification
- Review: Registration is not currently active
- Review: Registration appears to be expired
- Review: 3 Attorney General complaint records found
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- EXPIRED
- Effective date
- September 15, 2021
- Expiration date
- September 15, 2023
- Suspension date
- August 13, 2023
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
L&I does not publish bond records for contractors with EXPIRED status.
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Liability insurance
L&I does not publish liability insurance records for contractors with EXPIRED status.
Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced October 9, 2026.
People
Principals L&I lists for this license.
- Ontiveros, Hannah DalagerSince September 15, 2021
- Ontiveros, Michael AbelSince September 15, 2021
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Attorney General complaints
3 Attorney General complaint records found.
Matched on business name and city: SILVERBACKS CONCRETE in SPOKANE. Complaints filed under another name or city are not included.
- 2023Contractors
- 2023Contractors
- 2022Contractors
A complaint record does not establish that the business violated the law.
Source: Attorney General Consumer Complaints, Washington State Attorney General's Office. Last synced October 9, 2026.
Record history
Changes to this contractor's state records since we began tracking them. The state's current-status tools do not show these.
No changes recorded since our records began on October 6, 2026.
Sources
- L&I Contractor License Data - General, Washington State Department of Labor & Industries
- L&I Contractor License Data - Bond, Washington State Department of Labor & Industries
- L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries
- L&I Contractor License - Principal Data, Washington State Department of Labor & Industries
- Attorney General Consumer Complaints, Washington State Attorney General's Office
Record last synced October 7, 2026.
Check this record against the state directly on L&I's Verify a Contractor page (search by license number SILVEC*796ON).