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.
- COVENANT PLUMBING PLLCSUSPENDED
Spokane, WA · License COVENPP792MB · First registered 2021
- COVENANT PLUMBING PLLCRE-LICENSED
Spokane, WA · License COVENPP891L1 · First registered 2011
- COVEYWORKS LLCEXPIRED
Tacoma, WA · License COVEYL*855BH · First registered 2015
- COVINGTON PLUMBING INCEXPIRED
Bellevue, WA · License COVINPI006OA · First registered 2000
- CPI PLUMBING & HEATING INCEXPIRED
Mount Vernon, WA · License CPIPLPH791NB · First registered 2021
Mount Vernon, WA · License CPIPLPH78041 · First registered 2022
- CR PLUMBINGRE-LICENSED
Issaquah, WA · License CRPLUP*943N2 · First registered 2006
- CRABTREE WELL DRILLING LLCEXPIRED
Kingston, WA · License CRABTWD7905R · First registered 2021
- CRAFTS PLUMBING LLCEXPIRED
Carlton, WA · License CRAFTPL838L2 · First registered 2017
- CRAFTWORK PLUMBING INCOUT OF BUSINESS
Beaverton, OR · License CRAFTPI066RN · First registered 1994
Washougal, WA · License CRAIGPS897N9 · First registered 2011
- CRAWL SPACE CLEANING PROS INCSUSPENDED
Tacoma, WA · License CRAWLSC757CE · First registered 2025
- CRAY PLUMBING LLCEXPIRED
Kennewick, WA · License CRAYPPL957PM · First registered 2005
- CREATIVE PLUMBING SOLUTIONSRE-LICENSED
Monroe, WA · License CREATPS818OR · First registered 2019
- CRESO FAMILY PLUMBING LLCRE-LICENSED
Tacoma, WA · License CRESOFP832PO · First registered 2017
- CRISMAN PLUMBING LLCEXPIRED
Kelso, WA · License CRISMPL781OT · First registered 2022
- CROMWELL FIRE SYSTEMSEXPIRED
Oregon City, OR · License CROMWFS793OC · First registered 2021
- CROSS CONNECTION SPEC LLCEXPIRED
Puyallup, WA · License CROSSCS783CW · First registered 2022
- CROSS CONNECTION SPEC LLCRE-LICENSED
Puyallup, WA · License CROSSCS943BE · First registered 2006
- CROWN CUSTOM PLUMBINGEXPIRED
Mountlake Terrace, WA · License CROWNCP952CW · First registered 2005
- CROWN PLUMBING INCEXPIRED
Snohomish, WA · License CROWNPI910QE · First registered 2009
- CSA MECHANICAL LLCEXPIRED
Edwall, WA · License CSAMEML780BR · First registered 2022
- CSA MECHANICAL LLCRE-LICENSED
Edwall, WA · License CSAMEML794BK · First registered 2021
- CTD LLCEXPIRED
Twisp, WA · License CTDLLL*790RF · First registered 2021
- CUMMINGS INCEXPIRED
Tacoma, WA · License CUMMII*784K6 · First registered 2022
- CURLY'S PLUMBINGEXPIRED
Everson, WA · License CURLYP*164BJ · First registered 1984
- CURTIS C PLUMBING INCEXPIRED
Bellingham, WA · License CURTICP949OK · First registered 2006
- CUSTOM PLUMBINGEXPIRED
Athol, ID · License CUSTOP*835OR · First registered 2017
- CUSTOM PLUMBING & CONST LLCEXPIRED
Canby, OR · License CUSTOPC793RD · First registered 2022
- CUSTOM PLUMBING & CONST LLCEXPIRED
Canby, OR · License CUSTOPC861MN · First registered 2014
- Cascade Clean Water LLCOUT OF BUSINESS
Woodland, WA · License CASCACW775RR · First registered 2024
- Centerline Plumbing LLCEXPIRED
Seattle, WA · License CENTEPL864BP · First registered 2014
Olympia, WA · License CERTIBA905P9 · First registered 2010
Puyallup, WA · License CLEANWP770P7 · First registered 2023
- Columbia Sanitation LLCEXPIRED
Ellensburg, WA · License COLUMSL781N2 · First registered 2022
- Craftsman Plumbing LLCRE-LICENSED
Seattle, WA · License CRAFTPL863D5 · First registered 2014
- Cross Connection ServicesSUPERCEDED
Puyallup, WA · License CROSSCS770K3 · First registered 2023
- Crossroads Plumbing Serv IncRE-LICENSED
Zillah, WA · License CROSSPS842OL · First registered 2016
- CuraFlo Services LLCEXPIRED
Mesa, AZ · License CURAFSL876Q1 · First registered 2013
- Curtis Frace PlumbingEXPIRED
Valley, WA · License CURTIFP876D6 · First registered 2013
- D & S PLUMBING LLCEXPIRED
Everett, WA · License DSPLUSP923BP · First registered 2008
- D & SONS PLUMBING LLCEXPIRED
Battle Ground, WA · License DSONSSP874J6 · First registered 2013
- D B PLUMBINGEXPIRED
Covington, WA · License DBPLUBP783N2 · First registered 2022
- D B PLUMBINGEXPIRED
Covington, WA · License DBPLUP*924JJ · First registered 2008
- D M PLUMBINGEXPIRED
Manson, WA · License DMPLUMP795NG · First registered 2021
- D M PLUMBINGRE-LICENSED
Manson, WA · License DMPLUP*926B2 · First registered 2008
- D R YAEGER PLUMBING LLCEXPIRED
Spokane, WA · License DRYAERY783NA · First registered 2022
- D R YAEGER PLUMBING LLCEXPIRED
Spokane, WA · License DRYAERY794BH · First registered 2021
- D SQUARED PLUMBINGEXPIRED
Tacoma, WA · License DSQUASP832KP · First registered 2017
Lacey, WA · License DWOOLWB792NU · First registered 2021