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.
- A-1 DRILLING & DIGGING INCSUPERCEDED
Stanwood, WA · License 1DRILDD792O2 · First registered 2021
- A-1 PEPPERWORTH PLUMBING INCRE-LICENSED
Bellingham, WA · License A1PEPP*211QB · First registered 1979
- A-BATEXPIRED
Everett, WA · License ABAT***990DZ · First registered 2001
- A-PLUS WATER SERVICES INCEXPIRED
Arlington, WA · License PLUSWWS799ND · First registered 2021
- A-TEAM PLUMBING LLCSUSPENDED
Arlington, WA · License TEAMPPL773C2 · First registered 2023
- A-Z PLUMBING & MECHANICAL LLCRE-LICENSED
Lakewood, WA · License ZPLUMPM809Q5 · First registered 2020
- A1 ROOTER INCEXPIRED
Astoria, OR · License A1ROOI*760MN · First registered 2024
- A1 ROOTER LLCEXPIRED
Clarkston, WA · License A1ROORL779J7 · First registered 2023
- AA MECHANICAL LLCRE-LICENSED
Tumwater, WA · License AAMECML792C2 · First registered 2021
- AA QUALITY PLUMBINGEXPIRED
Camas, WA · License AAQUAQP795RH · First registered 2022
- AAA ACCURATE PLUMBINGEXPIRED
Spokane, WA · License AAAACAP930D1 · First registered 2007
Camano Island, WA · License AAABABA908CE · First registered 2010
Marysville, WA · License AAAFIFS772JC · First registered 2023
- AAA FIVE STAR PLBG SYS & SRVCSRE-LICENSED
Marysville, WA · License AAAFISP971MM · First registered 2003
- AAA MECHANICAL SOLUTIONS LLCEXPIRED
Cle Elum, WA · License AAAMEMS808PG · First registered 2020
- AAA TANKLESS/TRDTONAL WTR HTRSSUSPENDED
Kent, WA · License AAATATW753Q5 · First registered 2025
- AAA WATER HEATERS INCEXPIRED
Seattle, WA · License AAAWAWH792NP · First registered 2022
- AAA WATER HEATERS INCRE-LICENSED
Seattle, WA · License AAAWAWH936MW · First registered 2007
- AALL-RITE SERVICESEXPIRED
Elk, WA · License AALLRS*955C5 · First registered 2005
- AARON LESTER PLUMBING LLCEXPIRED
Lakewood, WA · License AARONLP772BS · First registered 2023
- AARON'S PLUMBING LLCRE-LICENSED
Kingston, WA · License AARONPL955Q3 · First registered 2005
- ABE'S PLUMBING LLCEXPIRED
Montesano, WA · License ABESPPL930PH · First registered 2007
- ABELSON PLUMBING PLLCEXPIRED
Monroe, WA · License ABELSPP773MM · First registered 2023
- ABELSON PLUMBING PLLCRE-LICENSED
Monroe, WA · License ABELSPP876KO · First registered 2013
- ABLE ONE PLUMBING & MECH. LLCSUSPENDED
Port Orchard, WA · License ABLEOOP783JR · First registered 2022
- ABLE PLUMBING PLUSEXPIRED
Spanaway, WA · License ABLEPP*044MZ · First registered 1996
- ABOVE AVERAGE PLUMBINGRE-LICENSED
Spokane, WA · License ABOVEAP873N8 · First registered 2013
- ABRAHAM'S PLUMBING SERVS INCEXPIRED
Olympia, WA · License ABRAHPS767LJ · First registered 2024
- ABS PLUMBING & GNRL CNTRG LLCSUSPENDED
Moses Lake, WA · License ABSPLPG779QB · First registered 2023
Duvall, WA · License ABSOLCP781JR · First registered 2022
- ABSOLUTE DRAIN & SEPTIC INCRE-LICENSED
Yakima, WA · License ABSOLDS911BT · First registered 2009
- ABSOLUTE PLUMBINGRE-LICENSED
Mount Vernon, WA · License ABSOLP*872OD · First registered 2013
- ABSOLUTE PLUMBING INCSUSPENDED
Vancouver, WA · License ABSOLPI770P7 · First registered 2023
- ABSOLUTE PLUMBING LLCEXPIRED
Colfax, WA · License ABSOLPL793JH · First registered 2021
- ACCESS PLUMBING & HEATING LLCRE-LICENSED
Woodinville, WA · License ACCESPH804QC · First registered 2020
- ACCLAIM PLUMBING AND DRAINSUSPENDED
Seattle, WA · License ACCLAPD763MW · First registered 2024
- ACCLAIM PLUMBING AND DRAINEXPIRED
Seattle, WA · License ACCLAPD781MF · First registered 2022
- ACCURATE WATERWORKSEXPIRED
Spokane, WA · License ACCURW*077MF · First registered 1993
- ACE BACKFLOW ONLYEXPIRED
University Pl, WA · License ACEBABO834B5 · First registered 2017
- ACE PLUMBING & SEWER SERVICERE-LICENSED
Spokane, WA · License ACEPLSS022KA · First registered 1998
- ACE PLUMBING LLCEXPIRED
Chehalis, WA · License ACEPLPL801PR · First registered 2020
- ACE WORKSEXPIRED
Bremerton, WA · License ACEWOW*825B6 · First registered 2018
- ACE WORKS INCRE-LICENSED
Bremerton, WA · License ACEWOWI794K8 · First registered 2021
- ACE'S PLUMBING COSUSPENDED
Renton, WA · License ACESPPC753D5 · First registered 2025
- ACS Logistics Holdings LLCEXPIRED
Saint Paul, MN · License ACSLOLH786KR · First registered 2022
- ACTION MAN PLUMBINGEXPIRED
Republic, WA · License ACTIOMP942JC · First registered 2006
- ACTION PLUMBINGRE-LICENSED
Seattle, WA · License ACTIOP*032B1 · First registered 1997
Dryden, WA · License ACTIOPH014RW · First registered 1999
- ADRIATIC PLUMBING INCEXPIRED
Bothell, WA · License ADRIAPI972BB · First registered 2003
- ADVANCE TESTING & SERVICE INCRE-LICENSED
Marysville, WA · License ADVANTS981KH · First registered 2002