Plumbing contractors in Washington
2,263 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 2,263 active registrations.
- S D C PLUMBINGEXPIRED
Vashon, WA · License SDCPL**072D5 · First registered 1993
- S E A Construction LLCEXPIRED
Raymond, WA · License SECONEC786PL · First registered 2022
- S SHARP PLUMBING LLCRE-LICENSED
Puyallup, WA · License SSHARSP795CE · First registered 2021
- SAFE & SOUND PLUMBING LLCRE-LICENSED
Seattle, WA · License SAFESSP945JK · First registered 2006
- SAFE WATER TECHNOLOGIES WESTEXPIRED
Spokane, WA · License SAFEWWT947JQ · First registered 2006
- SAFE@HOME INSPECTIONS LLCEXPIRED
Asotin, WA · License SAFEHIL801JO · First registered 2020
- SAKRISSON PLUMBINGRE-LICENSED
Ridgefield, WA · License SAKRIP*895CJ · First registered 2011
- SAKRISSON PLUMBING LLCRE-LICENSED
Ridgefield, WA · License SAKRIPL809BB · First registered 2020
- SAL'S PLUMBING LLCEXPIRED
Nespelem, WA · License SALSPPL783DA · First registered 2022
- SAL'S PUMP & ELECTRICAL SRVCRegistration closed
Prosser, WA · License SALSPPE785RW · First registered 2022
- SAM THE PLUMBEREXPIRED
Spokane, WA · License SAMPL**007O8 · First registered 2000
- SAMMAMISH PIPEWORKS LLCEXPIRED
Sammamish, WA · License SAMMAPL764LK · First registered 2024
Hayden, ID · License SAMPSPH793PG · First registered 2021
- SAMPSON'S PLUMBING & HEATINGOUT OF BUSINESS
Colfax, WA · License SAMPSPH164MS · First registered 1984
- SAMPSON'S PLUMBING & HEATINGEXPIRED
Colfax, WA · License SAMPSPH781NB · First registered 2022
- SAWYER PLUMBING LLCRE-LICENSED
Rathdrum, ID · License SAWYEPL914LP · First registered 2009
- SBE MECHANICAL LLCEXPIRED
Spokane, WA · License SBEMEML761PD · First registered 2024
- SC PLUMBING LLCSUSPENDED
Spokane, WA · License SCPLUPL756B7 · First registered 2025
- SCHENCK MECHANICAL LLCEXPIRED
Snohomish, WA · License SCHENML781LP · First registered 2022
- SCHLECHT PLUMBING INCRE-LICENSED
Battle Ground, WA · License SCHLEPI971KT · First registered 2003
- SCHMITTY'S PLUMBINGEXPIRED
Redmond, WA · License SCHMIP*792PK · First registered 2022
- SCHMITTY'S PLUMBINGEXPIRED
Redmond, WA · License SCHMIP*836PJ · First registered 2017
- SCHNEIDER EQUIPMENT, INC.SUPERCEDED
Saint Paul, OR · License SCHNEEI798OA · First registered 2021
- SCHOENER PLUMBINGEXPIRED
Post Falls, ID · License SCHOEP*792QN · First registered 2021
- SCHOENER PLUMBINGOUT OF BUSINESS
Post Falls, ID · License SCHOEP*807PZ · First registered 2020
- SCHOENER PLUMBING LLCEXPIRED
Post Falls, ID · License SCHOEPL774QB · First registered 2023
- SCHUERMAN PLUMBINGEXPIRED
Issaquah, WA · License SCHUEP*202K1 · First registered 1980
- SCHUSTER PLUMBING COEXPIRED
Lynnwood, WA · License SCHUSPC158KH · First registered 1985
- SCOTT STENNES PLUMBINGEXPIRED
Edgewood, WA · License SCOTTSP911LB · First registered 2009
- SCOTT'S QUALITY PLUMBING LLCEXPIRED
Seattle, WA · License SCOTTQP841J2 · First registered 2016
- SCOTTIE'S PLMBG & REPAIR INCRE-LICENSED
Oak Harbor, WA · License SCOTTPR895N2 · First registered 2011
- SEAL PLUMBING LLCRE-LICENSED
Wenatchee, WA · License SEALPPL868RE · First registered 2014
- SEATOWN ELECTRIC HEATING & AIRRE-LICENSED
Mukilteo, WA · License SEATOEH791MR · First registered 2021
- SEATTLE SEWER INSPECTION LLCEXPIRED
Seattle, WA · License SEATTSI774DT · First registered 2023
Tacoma, WA · License SEATTSP781RM · First registered 2022
- SEATTLE'S PLUMBING LLCSUPERCEDED
Brier, WA · License SEATTPL774RJ · First registered 2024
- SEEKINS PLUMBING LLCRE-LICENSED
Vancouver, WA · License SEEKIPL932L6 · First registered 2007
- SELECT PLUMBINGRE-LICENSED
Union, WA · License SELECP*011RS · First registered 1999
Everett, WA · License SELECPR865M1 · First registered 2014
- SENIOR CITIZEN PLUMBINGEXPIRED
Tacoma, WA · License SENIOCP882D3 · First registered 2012
- SEPPALA ENTERPRISES INCEXPIRED
Taylors, SC · License SEPPAEI796NG · First registered 2021
- SEPPALA PLUMBING NW LLCSUPERCEDED
Battle Ground, WA · License SEPPAPN784BR · First registered 2022
- SEQUIM PLUMBING INCEXPIRED
Sequim, WA · License SEQUIPI984JD · First registered 2002
- SERIOUS PLUMBING COMPANYEXPIRED
Poulsbo, WA · License SERIOPC033RS · First registered 1997
- SERVICE PLUMBING & ROOTER LLCOUT OF BUSINESS
Southworth, WA · License SERVIPR798RC · First registered 2021
- SERVICE PLUMBING GROUPEXPIRED
Port Orchard, WA · License SERVIPG805KN · First registered 2020
- SERVICE SOURCE PLUMBINGEXPIRED
La Center, WA · License SERVISP072O9 · First registered 1993
- SEWER SLEUTHSEXPIRED
Sandy, OR · License SEWERS*765LD · First registered 2024
- SGATES PLUMBING & REMODELINGRE-LICENSED
Portland, OR · License SGATEPR830RM · First registered 2017
- SHAFFER & SONS PLUMBINGRE-LICENSED
Renton, WA · License SHAFFSP142PT · First registered 1986