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.
- HOT-WATER HEATER COMPANYRE-LICENSED
Olympia, WA · License HOTWAHC838DO · First registered 2017
- HP PLUMBING & HEATING INCRE-LICENSED
Mountlake Terrace, WA · License HPPLUPH932OD · First registered 2007
Edmonds, WA · License HUDSOCM792RF · First registered 2022
- HULL'S ROOTER & PLUMBINGEXPIRED
Yakima, WA · License HULLSRP994K9 · First registered 2001
- HUNTER MECHANICAL CO LLCEXPIRED
Seattle, WA · License HUNTEMC805LW · First registered 2020
- HYDRO MECHANICSEXPIRED
Tacoma, WA · License HYDROM*782P7 · First registered 2023
- HYDROMECCA PLUMBING LLCEXPIRED
Lake Stevens, WA · License HYDROPL782DH · First registered 2022
- HYDROTRONICS INCOUT OF BUSINESS
Sherwood, OR · License HYDROI*021JC · First registered 1998
- HYDRUS PLUMBING LLCEXPIRED
Shoreline, WA · License HYDRUPL881CP · First registered 2012
- High Priority Plumbing LLCEXPIRED
Colville, WA · License HIGHPPP834BO · First registered 2017
- I 5 PLUMBINGEXPIRED
Vancouver, WA · License I5PLU5P771RF · First registered 2024
- I 5 PLUMBING INCSUSPENDED
Vancouver, WA · License I5PLUI*764Q2 · First registered 2024
- I NEED A PLUMBER NOWEXPIRED
Kent, WA · License INEEDNP789JR · First registered 2022
- I&A MECHANICAL LLCEXPIRED
Renton, WA · License IMECHML815RP · First registered 2019
- IMPERIAL PLUMBING LLCSUPERCEDED
Wenatchee, WA · License IMPERPL780NB · First registered 2022
- IMPERIAL PLUMBING LLCRE-LICENSED
Wenatchee, WA · License IMPERPL904C4 · First registered 2010
- IMPERIAL PLUMBING WA INCEXPIRED
Gresham, OR · License IMPERPW855DP · First registered 2015
- INDEPENDENT MECHANICAL PLBGEXPIRED
Auberry, CA · License INDEPMP829MW · First registered 2018
- INDEPENDENT PLUMBINGRE-LICENSED
Sequim, WA · License INDEPP*931BD · First registered 2007
Yakima, WA · License INDEPWS799PQ · First registered 2021
- INFINITY PLUMBING LLCRE-LICENSED
Lynnwood, WA · License INFINPL816LS · First registered 2019
- INFINITY PLUMBING LLCEXPIRED
Federal Way, WA · License INFINPL875MQ · First registered 2013
- INLAND BACKFLOW LLCEXPIRED
Spokane, WA · License INLANBL796O8 · First registered 2021
- INNOVATIVE PLUMBING CONCEPTSEXPIRED
Lake Stevens, WA · License INNOVPC852PH · First registered 2015
- INSTALLS LLCSUPERCEDED
Buffalo, NY · License INSTAL*780JR · First registered 2022
- INSTANT ACCURATE PLUMBING LLCRE-LICENSED
Seattle, WA · License INSTAAP858NO · First registered 2015
- INTEGRAL PIPEWORKS LLCEXPIRED
Yacolt, WA · License INTEGPL836JG · First registered 2017
- INTEGRITY PLUMBINGRE-LICENSED
Kent, WA · License INTEGP*066QN · First registered 1994
Graham, WA · License INTEGPS814B9 · First registered 2019
- INTEGRITY PLUMBING LLCEXPIRED
Pasco, WA · License INTEGPL840P6 · First registered 2016
- INTERSTATE PLUMBING INCEXPIRED
Sheridan, OR · License INTERPI795NE · First registered 2021
- INVEST WEST MANAGEMENT LLCSUSPENDED
Vancouver, WA · License INVESWM757MZ · First registered 2025
- IPS PLUMBING LLCEXPIRED
Snohomish, WA · License IPSPLPL903CC · First registered 2010
- IPlumb IncEXPIRED
Winlock, WA · License IPLUMI*796O2 · First registered 2021
- J & F PLUMBINGEXPIRED
Shelton, WA · License JFPLUFP813JJ · First registered 2019
- J & H PLUMBING SERVICES INCEXPIRED
Mount Vernon, WA · License JHPLUHP810MA · First registered 2019
- J & J JENKINS PLUMBING INCRE-LICENSED
Brush Prairie, WA · License JJJENJJ854B8 · First registered 2015
- J & J PLUMBINGEXPIRED
Sequim, WA · License JJPLUJP764K3 · First registered 2024
- J & K PLUMBING INCRE-LICENSED
Puyallup, WA · License JKPLUI*159RD · First registered 1985
- J ALDEN PLUMBINGSUPERCEDED
Shoreline, WA · License JALDEAP797RM · First registered 2022
- J H ACTION PLUMBINGEXPIRED
Monroe, WA · License JHACTAP977PB · First registered 2003
- J P PLUMBING COMPANYEXPIRED
Astoria, OR · License JPPLUC*107DF · First registered 1990
- J T'S PLUMBING REPAIREXPIRED
Bonney Lake, WA · License JTSPLR*110JP · First registered 1989
- J WALTON PLUMBING LLCRE-LICENSED
Vancouver, WA · License JWALTWP862LO · First registered 2014
- J&J PLUMBINGEXPIRED
Granite Falls, WA · License JJPLUP*843J1 · First registered 2016
- J&S PLUMBING & MECHANICAL INCRE-LICENSED
Everett, WA · License JSPLUPM820LE · First registered 2018
Memphis, TN · License JACKHHP931N4 · First registered 2007
- JACK WALLACE PLUMBING INCRE-LICENSED
The Dalles, OR · License JACKWWP911JS · First registered 2009
- JACK'S PLUMBINGRE-LICENSED
Wellpinit, WA · License JACKSP*071K8 · First registered 1993
- JACKMAN INSTALLATIONSEXPIRED
Tacoma, WA · License JACKMI*789Q2 · First registered 2024