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.
- CJ'S PLUMBING & SERVICE LLCEXPIRED
Granite Falls, WA · License CJSPLPS795MB · First registered 2021
- CJ'S PLUMBING & SERVICE LLCRE-LICENSED
Granite Falls, WA · License CJSPLPS915OD · First registered 2009
- CLASSIC PLUMBING INCRE-LICENSED
Redmond, WA · License CLASSPI971PN · First registered 2003
- CLEAN PLUMBING LLCEXPIRED
Walla Walla, WA · License CLEANPL815KZ · First registered 2019
- CLEAN WATER SERVICES LLCEXPIRED
Lynden, WA · License CLEANWS052C3 · First registered 1995
- CLEARVIEW PLUMBING INCSUSPENDED
Cashmere, WA · License CLEARPI799RA · First registered 2021
- CLEARVIEW PLUMBING INCRE-LICENSED
Cashmere, WA · License CLEARPI971MS · First registered 2003
- CLEARWATER PLUMBINGEXPIRED
Kennewick, WA · License CLEARP*845LW · First registered 2016
- CLEARWATER PLUMBING INCEXPIRED
Olympia, WA · License CLEARPI072K9 · First registered 1993
- CLEARWATER PLUMBING SERVICESEXPIRED
Bellingham, WA · License CLEARPS821NM · First registered 2018
- CLEARWATER SERVICES INCRE-LICENSED
Akron, OH · License CLEARSI807OA · First registered 2020
- CLEARWATER SPRINGSSUSPENDED
Athol, ID · License CLEARWS778DL · First registered 2023
- CM AIR PROS LLCEXPIRED
Everett, WA · License CMAIRAP779LF · First registered 2023
- CNA PLUMBING LLCRE-LICENSED
Kennewick, WA · License CNAPLPL818RP · First registered 2019
- COAL CREEK PLUMBING REPAIREXPIRED
Napavine, WA · License COALCPR016QS · First registered 1999
Roy, WA · License COASTSC773KE · First registered 2023
- COASTAL LLCEXPIRED
Yacolt, WA · License COASTL*762B5 · First registered 2024
- COASTAL MECHANICALEXPIRED
Vancouver, WA · License COASTM*819RB · First registered 2019
- COLE DRAINS INCEXPIRED
Richland, WA · License COLEDI*005PW · First registered 2000
- COLE'S PLUMBING LLCRE-LICENSED
Spokane, WA · License COLESPL817PM · First registered 2019
- COLLETT CONSTRUCTION LLCEXPIRED
Lakewood, WA · License COLLECL774PJ · First registered 2023
- COLLIER PLUMBER INCRE-LICENSED
Seattle, WA · License COLLIPI003MA · First registered 2000
- COLUMBIA BASIN PLUMBINGRE-LICENSED
Kennewick, WA · License COLUMBP845BO · First registered 2016
Ellensburg, WA · License COLUMBW841OG · First registered 2016
- COLUMBIA PLUMBING & REMODL LLCSUSPENDED
East Wenatchee, WA · License COLUMPR787NR · First registered 2022
- COLUMBIA RIVER PLUMBINGRE-LICENSED
Napavine, WA · License COLUMRP906J6 · First registered 2010
- COLUMBIA TECHNICAL - WATER LLCRE-LICENSED
Woodland, WA · License COLUMTW816O4 · First registered 2019
- COMFORT ZONE SERVICES INCSUSPENDED
Okanogan, WA · License COMFOZS757D5 · First registered 2025
Sumner, WA · License COMMRKP762KM · First registered 2024
- COMPASS POINT PLUMBING LLCEXPIRED
La Conner, WA · License COMPAPP863PA · First registered 2014
- COMPETITIVE WATER HEATERS LLCOUT OF BUSINESS
Carnation, WA · License COMPEWH795D6 · First registered 2021
- COMPOUND SERVICES LLCEXPIRED
Battle Ground, WA · License COMPOSL802PB · First registered 2020
- CONNECT PLUMBING LLCEXPIRED
Colton, OR · License CONNEPL893BF · First registered 2011
- CONNER CONSTRUCTIONEXPIRED
Lacey, WA · License CONNEC*793NG · First registered 2021
- CONSERVATIVE PLUMBING LLCEXPIRED
Tacoma, WA · License CONSEPL782OB · First registered 2022
- CONTROL SYSTEMS INC CSISUSPENDED
Ontario, CA · License CONTRSI755BU · First registered 2025
- CONVEY PLUMBINGEXPIRED
Seattle, WA · License CONVEP*800D7 · First registered 2020
- COOL BLUE PLUMBING LLCEXPIRED
University Place, WA · License COOLBBP785OL · First registered 2022
- COOLWATER DRILLING INCSUPERCEDED
Bremerton, WA · License COOLWDI790QN · First registered 2021
- COPPER CREEK PLUMBING SERVICESRE-LICENSED
Kirkland, WA · License COPPECP897DU · First registered 2011
- COPPER MOUNTAIN PLUMBINGSUSPENDED
Spokane, WA · License COPPEMP753PA · First registered 2025
- COPPER PLUMBING LLCRE-LICENSED
Rochester, WA · License COPPEPL853DF · First registered 2015
- COPPERWORKS PLUMBING LLCSUSPENDED
Everett, WA · License COPPEPL794RN · First registered 2021
- COPPERWORKS PLUMBING LLCRE-LICENSED
Everett, WA · License COPPEPL817KM · First registered 2019
- CORBUS PLUMBING LLCEXPIRED
Yacolt, WA · License CORBUPL762CB · First registered 2024
- CORE PLUMBINGEXPIRED
Amboy, WA · License COREPP*785RK · First registered 2022
- CORNERSTONE PLUMBING LLCEXPIRED
Spokane Valley, WA · License CORNEPL864M8 · First registered 2014
- COUNTRY STYLE PLUMBING LLCSUSPENDED
Spokane, WA · License COUNTSP798NP · First registered 2021
- COUNTRY STYLE PLUMBING LLCRE-LICENSED
Spokane, WA · License COUNTSP800LP · First registered 2020
- COUNTY LINE PLUMBINGEXPIRED
Cle Elum, WA · License COUNTLP844NK · First registered 2016