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.
- LEMCO DRILLING INCSUPERCEDED
Lind, WA · License LEMCODI798OB · First registered 2021
- LEONARDO PLUMBING LLCEXPIRED
Hood River, OR · License LEONAPL794QW · First registered 2021
- LEONARDO PLUMBING LLCRE-LICENSED
Hood River, OR · License LEONAPL837DO · First registered 2017
- LEONETTI PLUMBING LLCSUPERCEDED
Carnation, WA · License LEONEPL764D9 · First registered 2024
- LEONETTI PLUMBING LLCEXPIRED
Carnation, WA · License LEONEPL809CS · First registered 2020
- LEONG PLUMBING INCEXPIRED
Mercer Island, WA · License LEONGPI086O2 · First registered 1992
- LEONG PLUMBING INCEXPIRED
Mercer Island, WA · License LEONGPI798MB · First registered 2021
- LEV'S PLUMBING CORE-LICENSED
Redmond, WA · License LEVSPC*022DP · First registered 1998
- LEVEL OF COMFORT LLCSUSPENDED
Seattle, WA · License LEVELCL780JR · First registered 2022
- LEWIS PLUMBING LLCRE-LICENSED
Port Hadlock, WA · License LEWISPL011PO · First registered 1999
- LEWIS PLUMBING LLCSUSPENDED
Port Hadlock, WA · License LEWISPL784KU · First registered 2024
- LG FINE CONTRACTOR LLCEXPIRED
Tacoma, WA · License LGFINFC772LF · First registered 2023
Buckeye, AZ · License LIBERPH786NR · First registered 2022
- LIFETIME HEATING & AIR CNDTNGSUSPENDED
Snohomish, WA · License LIFETHA785KE · First registered 2022
- LIONHART ENTERPRISES LLCSUSPENDED
Sedro Woolley, WA · License LIONHEL751PZ · First registered 2025
- LIQUID ENGINEERING CORPORATIONOUT OF BUSINESS
Billings, MT · License LIQUIEC956L8 · First registered 2005
Auburn, WA · License LIVINWP791BN · First registered 2021
- LKMC ENTERPRISESEXPIRED
Yakima, WA · License LKMCEE*766MR · First registered 2023
- LKMC ENTERPRISESEXPIRED
Yakima, WA · License LKMCEE*775DG · First registered 2023
- LLLP WOOLEY PLUMBINGEXPIRED
Tacoma, WA · License LLLPWWP812CN · First registered 2019
- LMN PLUMBING LLCSUSPENDED
Camano Island, WA · License LMNPLPL776OM · First registered 2023
- LOCAL PLUMBERRE-LICENSED
Friday Harbor, WA · License LOCALP*011P7 · First registered 1999
- LOCAL PLUMBERSUSPENDED
Friday Harbor, WA · License LOCALP*788PC · First registered 2022
- LOCAL PLUMBING COEXPIRED
Sherwood, OR · License LOCALPC861MP · First registered 2014
- LONGHORN ORGANICS LLCOUT OF BUSINESS
Terrell, TX · License LONGHOL849PS · First registered 2016
Longview, WA · License LONGVPH786KF · First registered 2022
- LOUCKS PLUMBINGEXPIRED
Vancouver, WA · License LOUCKP*823OO · First registered 2018
- LOVE CONSTRUCTIONEXPIRED
Seattle, WA · License LOVECC*773QH · First registered 2024
- LUNA MOON PLUMBING LLCEXPIRED
Everett, WA · License LUNAMMP891QQ · First registered 2011
- LUNYAR LLCSUSPENDED
Kent, WA · License LUNYAL*766QR · First registered 2024
- LVP LLCSUSPENDED
Quilcene, WA · License LVPLLL*757JH · First registered 2025
- Legacy Plumbing LLCEXPIRED
Olympia, WA · License LEGACPL885OQ · First registered 2012
- Liberty Pacific Mech LLCOUT OF BUSINESS
Quil Ceda Village, WA · License LIBERPM773P7 · First registered 2023
- M & M PLUMBINGRE-LICENSED
Lacey, WA · License MMPLUMP899P4 · First registered 2011
- M CAMPBELL & COMPANY INCEXPIRED
Pasco, WA · License MCAMPCC796NU · First registered 2021
- M D PLUMBINGEXPIRED
Shelton, WA · License MDPLU**011LT · First registered 1999
Auburn, WA · License MTSPLCI164D7 · First registered 1984
- M V M QUALITY DRILLING LLCSUPERCEDED
Chelan, WA · License MVMQUVM792OM · First registered 2021
- MAAS PLUMBING SERVICES LLCEXPIRED
Spokane Valley, WA · License MAASPPS769BH · First registered 2024
- MABBUTT PLUMBING LLCEXPIRED
Kingston, WA · License MABBUPL777LG · First registered 2023
- MABBUTT PLUMBING LLCEXPIRED
Kingston, WA · License MABBUPL932JB · First registered 2007
Spokane, WA · License MACBABT868JN · First registered 2014
- MACK PLUMBINGEXPIRED
Vancouver, WA · License MACKPP*911B7 · First registered 2009
- MAD PIPERS PLUMBING LLCEXPIRED
Snohomish, WA · License MADPIPP820QE · First registered 2018
- MAESTRO PLUMBING LLCEXPIRED
Auburn, WA · License MAESTPL801MW · First registered 2020
- MAGNUM PLUMBING & HEATINGEXPIRED
Everett, WA · License MAGNUPH940PB · First registered 2006
- MAINLINE DRAIN SERVICE LLCRE-LICENSED
Federal Way, WA · License MAINLDS851JP · First registered 2015
- MAINLINE PLUMBING INCRE-LICENSED
Bremerton, WA · License MAINLPI825K1 · First registered 2018
- MAINSTREAM ELECTRIC INCSUPERCEDED
Coeur D Alene, ID · License MAINSEI798R2 · First registered 2021
- MANTEY PLUMBING INCEXPIRED
Yakima, WA · License MANTEPI099DH · First registered 1991