Plumbing contractors in Washington
2,266 active plumbing contractors are registered with Washington L&I. 4,450 registrations are on record in all, including expired and other statuses.
200 of the active plumbing contractors registered in Washington are based in other states.
All 4,450 registrations on record
Businesses by registered name and license number. Show only the 2,266 active registrations.
Olympia, WA · License ADVANBL760CG · First registered 2024
- ADVANCED BACKFLW&CROSSCNTN LLCRE-LICENSED
Olympia, WA · License ADVANBL800JS · First registered 2020
Seattle, WA · License ADVANMP767DL · First registered 2024
- ADVANCED MECHANICAL & PLUMBINGRE-LICENSED
Seattle, WA · License ADVANMP930PU · First registered 2007
- AEM PLUMBING LLCEXPIRED
Kelso, WA · License AEMPLPL775MP · First registered 2023
- AERO PLUMBINGEXPIRED
Spokane, WA · License AEROPP*808BT · First registered 2020
- AFFINITY HOME SOLUTIONEXPIRED
East Wenatchee, WA · License AFFINHS818CA · First registered 2019
- AFFORDABLE HEATING LLCEXPIRED
Port Orchard, WA · License AFFORHL770Q9 · First registered 2023
Kingston, WA · License AFFORPN792RG · First registered 2021
- AFFORDABLE PLUMBING PROSEXPIRED
Auburn, WA · License AFFORPP842R7 · First registered 2016
- AFFORDABLE PLUMBING SERVICESSUSPENDED
Toutle, WA · License AFFORPS776J8 · First registered 2023
- AFFORDABLE PLUMBING SVCS INCSUPERCEDED
Snohomish, WA · License AFFORPS792OT · First registered 2021
- AFFORDABLE PLUMBING SVCS INCRE-LICENSED
Snohomish, WA · License AFFORPS902N3 · First registered 2010
Cle Elum, WA · License AFFORWB840DQ · First registered 2016
Richland, WA · License AFFORWS797JO · First registered 2021
Wauna, WA · License AFFORWF810RS · First registered 2020
- AFFORTABLE WEST COAST PLBGRE-LICENSED
Federal Way, WA · License AFFORWC883J3 · First registered 2012
- AFTER HOURS PLUMBINGEXPIRED
Kenmore, WA · License AFTERHP786JE · First registered 2023
- AFTER HOURS PLUMBINGRE-LICENSED
Kenmore, WA · License AFTERHP860JB · First registered 2014
- AFTER HOURS PLUMBING LLCEXPIRED
Camas, WA · License AFTERHP790QN · First registered 2021
- AFTER HOURS PLUMBING LLCRE-LICENSED
Camas, WA · License AFTERHP844B9 · First registered 2016
- AGENT PLUMBING INCEXPIRED
Sherwood, OR · License AGENTPI905MZ · First registered 2010
Bremerton, WA · License AJSBABA777R2 · First registered 2023
- AL'S PLUMBING INCRE-LICENSED
Sublimity, OR · License ALSPLI*064J2 · First registered 1994
- ALBRECHT PLUMBINGEXPIRED
Edmonds, WA · License ALBREP*848OL · First registered 2016
- ALCA PLUMBINGEXPIRED
Sequim, WA · License ALCAPP*790O4 · First registered 2021
- ALCA PLUMBINGRE-LICENSED
Sequim, WA · License ALCAPP*811N1 · First registered 2019
Prescott, AZ · License ALCORPF784D4 · First registered 2022
- ALL ABOUT PLUMBING LLCEXPIRED
Clarkston, WA · License ALLABAP793MG · First registered 2021
- ALL ABOUT PLUMBING LLCRE-LICENSED
Clarkston, WA · License ALLABAP822JJ · First registered 2018
- ALL AMERICAN PLUMBING INCEXPIRED
Vancouver, WA · License ALLAMPI008LW · First registered 2000
- ALL ASPECTS PLMBNG & DRAIN LLCSUSPENDED
Des Moines, WA · License ALLASAP792NG · First registered 2021
- ALL ASPECTS PLUMBING LLCEXPIRED
Seattle, WA · License ALLASAP813NG · First registered 2019
Pasco, WA · License ALLASAH789DC · First registered 2022
- ALL CLIMATE INCOUT OF BUSINESS
Redmond, WA · License ALLCLCI746LE · First registered 2026
- ALL COUNTY PLUMBING LLCRE-LICENSED
Battle Ground, WA · License ALLCOPL030RW · First registered 1997
- ALL DRAINS & PLUMBING LLCEXPIRED
Spokane, WA · License ALLDRDP784DH · First registered 2024
- ALL DRAINS & PLUMBING LLCEXPIRED
Spokane, WA · License ALLDRDP816DH · First registered 2019
- ALL OUT DRAIN CLEANERS LLC.SUSPENDED
Seattle, WA · License ALLOUOD755DU · First registered 2025
- ALL PLUMB NW INCEXPIRED
Arlington, WA · License ALLPLPN910DG · First registered 2009
- ALL PURPOSE CONST SERVICES INCOUT OF BUSINESS
Centralia, WA · License ALLPUPC776CL · First registered 2023
- ALL PURPOSE PLUMBING LLCEXPIRED
Tacoma, WA · License ALLPUPP965PG · First registered 2004
- ALL SERVICE PLUMBING LLCEXPIRED
Lake Stevens, WA · License ALLSESP796RD · First registered 2022
- ALL SMILES PLUMBING SRVS LLCEXPIRED
Bellingham, WA · License ALLSMSP844JJ · First registered 2016
- ALL SOUND PLUMBINGSUPERCEDED
Burien, WA · License ALLSOSP777NS · First registered 2023
- ALL SOUND PLUMBING & HTG CORE-LICENSED
Snohomish, WA · License ALLSOPH097D2 · First registered 1991
- ALL STAR PLUMBING INCRE-LICENSED
Spokane, WA · License ALLSTPI997DB · First registered 2001
- ALL VALLEY PLUMBINGSUSPENDED
Arlington, WA · License ALLVAVP782CN · First registered 2023
- ALL VALLEY PLUMBINGEXPIRED
Lake Stevens, WA · License ALLVAVP832BO · First registered 2017
- ALL WATER PLUMBING LLCEXPIRED
Maple Valley, WA · License ALLWAWP785DA · First registered 2022