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.
- D YOUNGS PLUMBING INCEXPIRED
Kirkland, WA · License DYOUNYP976PA · First registered 2003
- DALE THOMAS PLUMBING & HTG INCRE-LICENSED
Hauser, ID · License DALETTP913QE · First registered 2009
Lynnwood, WA · License DANSDDD761BU · First registered 2024
- DANA PLUMBING INCEXPIRED
Laguna Beach, CA · License DANAPPI928RH · First registered 2008
- DANCO PLUMBING COMPANYEXPIRED
Tacoma, WA · License DANCOPC840DJ · First registered 2016
- DANFORTH PLUMBING P L L CRE-LICENSED
Quincy, WA · License DANFOPP871DQ · First registered 2013
- DANIEL'S PLUMBINGEXPIRED
Vancouver, WA · License DANIEP*992J3 · First registered 2001
- DANIKA PLUMBING LLCEXPIRED
Everett, WA · License DANIKPL783L2 · First registered 2022
- DAPPER PLUMBINGEXPIRED
Marysville, WA · License DAPPEP*764MQ · First registered 2024
- DAPPER PLUMBINGOUT OF BUSINESS
Arlington, WA · License DAPPEP*807LC · First registered 2020
- DAVE GUIDA PLUMBINGOUT OF BUSINESS
Gig Harbor, WA · License DAVEGGP962LH · First registered 2004
- DAVE'S MECHANICALEXPIRED
Seattle, WA · License DAVESM*964B2 · First registered 2004
- DAVE'S PLUMBING INCRE-LICENSED
East Wenatchee, WA · License DAVESPI025KJ · First registered 1998
- DAVID'S MODERN PLUMBINGEXPIRED
Langley, WA · License DAVIDMP845DP · First registered 2016
- DAVIS PLUMBING INCEXPIRED
Renton, WA · License DAVISPI943N4 · First registered 2006
- DAY & NITE PLUMBING & HTG INCSUPERCEDED
Lynnwood, WA · License DAYNINP789C4 · First registered 2022
- DAY MECHANICALEXPIRED
Marysville, WA · License DAYMEM*764OC · First registered 2024
- DAY MECHANICALEXPIRED
Marysville, WA · License DAYMEM*902C6 · First registered 2010
- DC BACKFLOW SERVICEOUT OF BUSINESS
Carlsborg, WA · License DCBACBS777OQ · First registered 2023
- DC LABORERS LLCRE-LICENSED
Sequim, WA · License DCLABLL914O5 · First registered 2009
- DC'S PLUMBING INCEXPIRED
Battle Ground, WA · License DCSPLPI789J8 · First registered 2022
- DC'S PLUMBING INCRE-LICENSED
Battle Ground, WA · License DCSPLPI942RA · First registered 2006
- DCI PLUMBING INCRE-LICENSED
Black Diamond, WA · License DCIPLPI958NR · First registered 2005
- DEACY MECHANICALOUT OF BUSINESS
Benton City, WA · License DEACYM*062P4 · First registered 1994
- DEAN PLUMBING INCRE-LICENSED
Cashmere, WA · License DEANPI*940QL · First registered 2006
- DEAN PLUMBING INCSUSPENDED
Cashmere, WA · License DEANPPI799OZ · First registered 2021
- DEAR SERVICESSUSPENDED
Kent, WA · License DEARSS*798ND · First registered 2021
- DEEP WATER PLUMBING LLCEXPIRED
Tacoma, WA · License DEEPWWP805DL · First registered 2020
- DEISLER PLUMBING LLCEXPIRED
Port Orchard, WA · License DEISLPL774QP · First registered 2024
- DEISLER PLUMBING LLCEXPIRED
Port Orchard, WA · License DEISLPL956BG · First registered 2005
- DELK'S PLUMBING LLCEXPIRED
Mount Vernon, WA · License DELKSPL906MZ · First registered 2010
- DELSTAR PLUMBING INCEXPIRED
Woodinville, WA · License DELSTPI972OJ · First registered 2003
- DENALI PLUMBINGEXPIRED
Mount Vernon, WA · License DENALP*933L7 · First registered 2007
- DENALI PLUMBING LLCOUT OF BUSINESS
Mount Vernon, WA · License DENALPL764CW · First registered 2024
- DENNIS THE PLUMBEREXPIRED
Cle Elum, WA · License DENNIP*965DJ · First registered 2004
- DESIGN RIGHT INCEXPIRED
Anacortes, WA · License DESIGRI083C5 · First registered 1992
- DEVCO MECHANICAL INCRE-LICENSED
The Dalles, OR · License DEVCOMI995KS · First registered 2001
- DG PLUMBINGEXPIRED
Hansville, WA · License DGPLUP*804NJ · First registered 2020
- DIAMOND PLUMBING & HEATING LLCRE-LICENSED
Edmonds, WA · License DIAMOPH873DL · First registered 2013
- DIAMOND PLUMBING INCEXPIRED
Black Diamond, WA · License DIAMOPI010JK · First registered 1999
- DICK'S HEATING/AIR CNDTNG INCSUSPENDED
Sumner, WA · License DICKSHC790O1 · First registered 2021
- DINIUS SOUTHEND PLUMBINGEXPIRED
Enumclaw, WA · License DINIUSP846RG · First registered 2016
- DIRECT PLUMBING SOLUTIONS LLCINACTIVE
Moscow, ID · License DIRECPS785BR · First registered 2022
- DISCOUNT ROOTER PLUMBING INCOUT OF BUSINESS
Woodinville, WA · License DISCORP771DP · First registered 2023
- DISCOUNT ROOTER PLUMBING INCEXPIRED
Woodinville, WA · License DISCORP913DJ · First registered 2009
- DISTINCTIVE PLUMBING CO INCEXPIRED
Libby, MT · License DISTIPC951KW · First registered 2005
- DIVCO INCORPORATEDEXPIRED
Spokane, WA · License DIVCOI*792MF · First registered 2021
- DJ & DJ CONTRACTING LLCEXPIRED
Ferndale, WA · License DJDJCDC768NO · First registered 2024
- DL COLE COEXPIRED
Seattle, WA · License DLCOLCC891QP · First registered 2011
- DLR PLUMBINGEXPIRED
Plymouth, WA · License DLRPLP*890JA · First registered 2011