Washington contractor
MT SI PLUMBING & HEATING INC
First registered in Washington on May 20, 2005
- License number
- MTSIPSP957KP
- UBI
- 602385058
- Trade
- Plumbing(all plumbing contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · PLUMBING
- City
- NORTH BEND, WA(all contractors in North Bend)
- Phone
- (425) 888-0433
A newer license record under the same UBI is on file: MT SI PLUMBING & HEATING INC, license MTSIPSP770MQ, ACTIVE, effective November 21, 2023. See Related licenses below.
Current verification
- Found: No Attorney General complaint records found
- Review: Registration is not currently active
- Review: Registration appears to be expired
- Review: 1 other license record under the same UBI
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- EXPIRED
- Effective date
- May 20, 2005
- Expiration date
- June 21, 2023
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Related licenses
One other license number is registered under the same UBI, 602385058. A UBI identifies one business with the state; a business may hold more than one license, renew under a new number, or register a new license after an earlier one closed.
License MTSIPSP770MQ · PLUMBING CONTRACTOR · November 21, 2023 to November 21, 2027
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.
- DOCHNAHL, RICHARD DEANSince May 17, 2005
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Attorney General complaints
No Attorney General complaint records found.
Matched on business name and city: MT SI PLUMBING HEATING in NORTH BEND. Complaints filed under another name or city are not included.
One other registered contractor shares this business name and city: MT SI PLUMBING & HEATING INC (MTSIPSP770MQ, ACTIVE). Complaints are matched by business name and city, so any complaint records shown here also appear on those pages. The records do not say which of these contractors a complaint was about.
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 MTSIPSP957KP).