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Washington contractor licenses
Washington plumbing contractors
The L&I file dated Oct 29, 2026 lists 2,198 active Washington plumbing licenses, 2,006 of them held by businesses. 14 were issued in the last 30 days. 77 expire by Dec 28, 2026.1
- Active licenses
- 2,198
- Held by businesses
- 2,006
- Issued, last 30 days
- 14
- Issued, last 12 months
- 297
- Expire by Dec 28
- 77
Which Washington license classes count as plumbing work?
| Class | Active |
|---|---|
| PC-01 Journey Level | 1,442 |
| PC-02 Residential | 586 |
| PC-03 Pump & Irrigation | 72 |
| PC-30 Backflow Specialty | 64 |
| PC-3A Domestic Pump | 28 |
| PC-04 Residential Service | 6 |
Where are Washington's plumbing contractors?
259 cities have at least one. Businesses by city:
- Seattle95
- Spokane76
- Tacoma70
- Vancouver61
- Puyallup47
- Everett41
- Kent36
- Olympia35
- Battle Ground34
- Lynnwood34
- Auburn32
- Renton31
- Snohomish30
- Bellingham27
- Yakima25
- Woodinville24
- Kennewick23
- Marysville22
- Spokane Valley21
- Bothell21
- Bremerton21
- Arlington21
- Walla Walla20
- Lake Stevens20
Who got a Washington plumbing license most recently?
- Remont Remodeling LLCFife · PC-01 Journey Level · issued Oct 28, 2026
- Diamond Ridge Plumbing LLCStevenson · PC-01 Journey Level · issued Oct 26, 2026
- D & Sons Plumbing LLCBattle Ground · PC-01 Journey Level · issued Oct 20, 2026
- Redline Mechanical LLCBurbank · PC-01 Journey Level · issued Oct 14, 2026
- Wa Water Htrs, HTNG & Air, IncBuckley · PC-01 Journey Level · issued Oct 14, 2026
- American Heating IncPC-01 Journey Level · issued Oct 14, 2026
- Drain Marshal Plumbing CoEdgewood · PC-02 Residential · issued Oct 12, 2026
- Viator PlumbingSeattle · PC-01 Journey Level · issued Oct 8, 2026
- Island PLBG & Pipe Works LLCOak Harbor · PC-02 Residential · issued Oct 5, 2026
- Piped-Up Plumbing LLCSpokane · PC-02 Residential · issued Oct 2, 2026
Which plumbing contractors have held a license longest?
- Blue Mountain Mech IncOlympia · PC-01 Journey Level · since 2021
- Williams Mechanical IncEverett · PC-01 Journey Level · since 2021
- JRT Mechanical IncBattle Ground · PC-01 Journey Level · since 2021
- Dale McGhee&Sons Well DRL IncKelso · PC-03 Pump & Irrigation · since 2021
- Rooter Pal Plumbing LLCKirkland · PC-01 Journey Level · since 2021
Whose license is up for renewal next?
- Evergreen Plumbing & DRN LLCWoodinville · PC-02 Residential · expires Oct 30, 2026
- Pacific Plumbing & Const IncVancouver · PC-01 Journey Level · expires Oct 31, 2026
- Go Jo Plumbing LLCArlington · PC-01 Journey Level · expires Oct 31, 2026
- Belks Plumbing & Contrctng LLCLong Beach · PC-01 Journey Level · expires Nov 1, 2026
- Five Star PlumbingSpokane · PC-01 Journey Level · expires Nov 1, 2026
- John's Plumbing & Pumps IncOlympia · PC-02 Residential · expires Nov 1, 2026
- Sandford Plumbing & Const LLCTrout Lake · PC-02 Residential · expires Nov 5, 2026
- Alpine Plumbing LLCBrush Prairie · PC-01 Journey Level · expires Nov 7, 2026
- All Pro Plumbing LLCSelah · PC-01 Journey Level · expires Nov 7, 2026
- Summerson Plumbing IncVancouver · PC-02 Residential · expires Nov 7, 2026
Check a Washington license
Sources
- L&I contractor license data (data.wa.gov, Oct 29, 2026)
- Department of Labor and Industries (L&I) (lni.wa.gov)