Washington contractor
DUFF CONSTRUCTION
First registered in Washington on April 16, 2005
- License number
- DUFFC**951JW
- UBI
- 600219758
- Trade
- General contractor(all general contractor contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · GENERAL
- City
- RITZVILLE, WA
- Phone
- (509) 660-0659
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Current verification
- Found: No Attorney General complaint records found
- Review: Registration is not currently active
- Review: Registration appears to be expired
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- OUT OF BUSINESS
- Effective date
- April 16, 2005
- Expiration date
- April 19, 2021
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 OUT OF BUSINESS status.
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced November 11, 2026.
Liability insurance
L&I does not publish liability insurance records for contractors with OUT OF BUSINESS status.
Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced November 11, 2026.
People
Principals L&I lists for this license.
L&I does not publish principal records for contractors with OUT OF BUSINESS status.
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced November 11, 2026.
Attorney General complaints
No Attorney General complaint records found.
Matched on business name and city: DUFF CONSTRUCTION in RITZVILLE. Complaints filed under another name or city are not included.
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 November 11, 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 DUFFC**951JW).