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.
- APD PLUMBING & MECHANICAL INCSUSPENDED
Olympia, WA · License APDPLPM789QP · First registered 2022
- APES PLUMBINGEXPIRED
Coeur D Alene, ID · License APESPP*894L9 · First registered 2011
- APES PLUMBING & REPAIR LLCSUSPENDED
Milton, WA · License APESPPR756L5 · First registered 2025
- APEX PLBG & MECH PIPING LLCRE-LICENSED
Yakima, WA · License APEXPMP000JL · First registered 2000
- APEX PLUMBINGEXPIRED
Spokane Valley, WA · License APEXPP*806P7 · First registered 2020
Dayton, WA · License APEXPPE761TF · First registered 2024
- APEX PLUMBING LLCEXPIRED
Bremerton, WA · License APEXPPL840LS · First registered 2016
- APP-ServicesRE-LICENSED
Graham, WA · License APPSE**905R9 · First registered 2010
- APPLE VALLEY PLUMBINGEXPIRED
Rock Island, WA · License APPLEVP792PK · First registered 2021
- APPLE VALLEY PLUMBINGEXPIRED
Rock Island, WA · License APPLEVP901QA · First registered 2010
- APPROPRIATE PLUMBING LLCEXPIRED
Snohomish, WA · License APPROPL768CB · First registered 2024
- APPROVED PLUMBING AND HEATINGRE-LICENSED
Bainbridge Island, WA · License APPROPH861MH · First registered 2015
- APS PLUMBING LLCRE-LICENSED
Renton, WA · License APSPLPL883MC · First registered 2012
- APW SERVICES LLCEXPIRED
Maple Valley, WA · License APWSESL823NM · First registered 2018
- AQUA ALTERNATIVESEXPIRED
Freeland, WA · License AQUAAA*836RK · First registered 2017
Tukwila, WA · License AQUALPE774PF · First registered 2023
- AQUALINE PLBG ELEC & HTNG LLCSUSPENDED
Tukwila, WA · License AQUALPE782JN · First registered 2022
- AQUATECHEXPIRED
Castle Rock, WA · License AQUAT**932BP · First registered 2007
- AQUIFER PLUMBING LLCEXPIRED
Portland, OR · License AQUIFPL881LK · First registered 2012
- ARCHGOLD INCOUT OF BUSINESS
Lynnwood, WA · License ARCHGI*811DN · First registered 2019
- ARCHIE'S PLUMBING SERVICE INCRE-LICENSED
Seattle, WA · License ARCHIPS170JM · First registered 1983
- ARN'S PLUMBINGSUPERCEDED
Brush Prairie, WA · License ARNSPP*788QM · First registered 2022
- ARNOLDS PLUMBINGEXPIRED
Port Orchard, WA · License ARNOLP*099CK · First registered 1991
- ARROW MECHANICAL SYSTEMS INCEXPIRED
Sumner, WA · License ARROWMS947NM · First registered 2006
- ARROW PLUMBING & SERVICES LLCRE-LICENSED
Spokane, WA · License ARROWPS870CH · First registered 2013
- ARROWHEAD PLUMBINGEXPIRED
Issaquah, WA · License ARROWP*762OJ · First registered 2024
- AS PLUMBING & WHSUPERCEDED
Yakima, WA · License ASPLUPW783KQ · First registered 2022
- AS PLUMBING & WHRE-LICENSED
Yakima, WA · License ASPLUPW852ML · First registered 2015
- ASAP PLUMBING INCEXPIRED
Wenatchee, WA · License ASAPPPI864L7 · First registered 2014
- ASSURANCE PLUMBING LLCSUSPENDED
Peoria, AZ · License ASSURPL7544Q · First registered 2025
- ASTRO MECHANICAL CONTRS INCEXPIRED
El Cajon, CA · License ASTROMC820QW · First registered 2018
- ATHOS PLUMBINGSUSPENDED
Longview, WA · License ATHOSP*754C6 · First registered 2025
- ATI PLUMBING INCRE-LICENSED
Oregon City, OR · License ATIPLPI922BS · First registered 2008
- ATLAS HOME SERVICESEXPIRED
Fife, WA · License ATLASHS766CB · First registered 2024
- ATLAS HOME SERVICESEXPIRED
Fife, WA · License ATLASHS788QC · First registered 2022
- ATLAS MINI SPLITS LLCEXPIRED
Snohomish, WA · License ATLASMS760MN · First registered 2024
Seattle, WA · License ATLASPM792P8 · First registered 2022
- ATO BACKFLOW LLCEXPIRED
Seabeck, WA · License ATOBABL764K3 · First registered 2024
- AUCKLAND PLUMBING INCEXPIRED
Lyman, WA · License AUCKLPI027MO · First registered 1998
- AV PLUMBINGEXPIRED
Ellensburg, WA · License AVPLUP*792MT · First registered 2021
- AWA BACKFLOWEXPIRED
Snohomish, WA · License AWABAB*839JM · First registered 2017
- Above Plumbing & Contrng LLCEXPIRED
Bothell, WA · License ABOVEPC776LH · First registered 2023
- Above Plumbing & Contrng LLCOUT OF BUSINESS
Bothell, WA · License ABOVEPC786MH · First registered 2022
- Above Plumbing & Contrng LLCRE-LICENSED
Bothell, WA · License ABOVEPC897C8 · First registered 2011
- Acme PlumbingOUT OF BUSINESS
Spokane, WA · License ACMEPP*893B1 · First registered 2011
- Acqua Plumbing LLCSUSPENDED
Tacoma, WA · License ACQUAPL765R6 · First registered 2024
- Action Man PlumbingSUSPENDED
Republic, WA · License ACTIOMP772M5 · First registered 2023
- Affordable Land Care LLCEXPIRED
Kelso, WA · License AFFORLC797O7 · First registered 2021
- Affordable Plumbing NWEXPIRED
Kingston, WA · License AFFORPN912RT · First registered 2009
- Al's Custom Fabrication LLCSUSPENDED
Grandview, WA · License ALSCUCF783QW · First registered 2022