Plumbing contractors in Washington

2,262 active plumbing contractors are registered with Washington L&I. 4,448 registrations are on record in all, including expired and other statuses.

199 of the active plumbing contractors registered in Washington are based in other states.

All 4,448 registrations on record

Businesses by registered name and license number. Show only the 2,262 active registrations.

A3 PLUMBING LLCACTIVE
Everett, WA · License A3PLUPL751B1 · Registered 1 year
AA MECHANICAL LLCACTIVE
Tumwater, WA · License AAMECML790NB · Registered 5 years
AA QUALITY PLUMBING LLCACTIVE
Camas, WA · License AAQUAQP785RZ · Registered 3 years
AAA BACKFLOW ASS TS & SERV LLCACTIVE
Everett, WA · License AAABABA744DU · Registered less than 1 year
AAA BACKFLOW ASY TSTNG/SVC LLCACTIVE
Camano Island, WA · License AAABABA781PQ · Registered 3 years
AAA FIRE PROTECTION INCACTIVE
Seattle, WA · License AAAFIFP777PZ · Registered 3 years
AAA PUMP & WELL DRILLINGACTIVE
Monroe, WA · License AAAPUPW784R7 · Registered 3 years
AAA WATER HEATERSACTIVE
Seattle, WA · License AAAWAWH741J7 · Registered less than 1 year
AACRA BACKFLOW TESTING/REPAIRACTIVE
Snohomish, WA · License AACRABT795PD · Registered 4 years
AARON'S PLUMBING LLCACTIVE
Kingston, WA · License AARONPL797NF · Registered 5 years
ABBI'S PLUMBING & REMODELACTIVE
Arlington, WA · License ABBISPR784PO · Registered 3 years
ABE'S PLUMBINGACTIVE
Montesano, WA · License ABESPP*7441O · Registered less than 1 year
ABOUT PLUMBING INCACTIVE
Sedro Woolley, WA · License ABOUTPI799OP · Registered 5 years
ABOVE PLUMBING LLCACTIVE
Yelm, WA · License ABOVEPL741BN · Registered less than 1 year
ABSOLUTE PLUMBINGACTIVE
Mount Vernon, WA · License ABSOLP*799MB · Registered 4 years
ABSOLUTE WATER TREATMENT LLCACTIVE
Lacey, WA · License ABSOLWT901B5 · Registered 16 years
ABV PLUMBING INCACTIVE
Edmonds, WA · License ABVPLPI784PQ · Registered 3 years
AC ELECTRIC SERVICEACTIVE
SeaTac, WA · License ACELEES745K8 · Registered less than 1 year
ACCESS PLUMBING & HEATING LLCACTIVE
Snohomish, WA · License ACCESPH785C8 · Registered 4 years
ACCO ENGINEERED SYSTEMS INCACTIVE
Pasadena, CA · License ACCOEES794RO · Registered 4 years
ACE BACKFLOW ONLYACTIVE
University Pl, WA · License ACEBABO770M8 · Registered 3 years
ACE PLUMBING & MECHANICALACTIVE
Mukilteo, WA · License ACEPLPM761RT · Registered 1 year
ACE PLUMBING LLCACTIVE
Chehalis, WA · License ACEPLPL784N5 · Registered 4 years
ACE WORKS INCACTIVE
Bremerton, WA · License ACEWOWI789M6 · Registered 4 years
ACKLEY PUMP & ELECTRIC SERVICEACTIVE
Rochester, WA · License ACKLEPEA472O · Registered less than 1 year
ACTION CRAFT EXPERTS LLCACTIVE
Spokane, WA · License ACTIOCE781CJ · Registered 4 years
ACTION DRAIN & PLUMBINGACTIVE
Spokane, WA · License ACTIODP786LP · Registered 4 years
ACTION JACKSON DRN CLN/PLB LLCACTIVE
Edmonds, WA · License ACTIOJD776U9 · Registered 3 years
ACTION PLMB & HTNG WEST INCACTIVE
Dryden, WA · License ACTIOPH783DA · Registered 3 years
ACTION PLUMBINGACTIVE
Sedro Woolley, WA · License ACTIOP*758OZ · Registered 1 year
ACTION PLUMBINGACTIVE
Seattle, WA · License ACTIOP*784BO · Registered 4 years
ACTION ROOTER & PLUMBING SVCACTIVE
Yakima, WA · License ACTIORP783L9 · Registered 4 years
ADAGIO BACKFLOW TESTINGACTIVE
Bellingham, WA · License ADAGIBT759RA · Registered less than 1 year
ADAMS PLUMBINGACTIVE
Vancouver, WA · License ADAMSP*761NO · Registered 2 years
ADB PLUMBING, LLCACTIVE
Marysville, WA · License ADBPLPL799RG · Registered 4 years
ADM PLUMBING LLCACTIVE
Gresham, OR · License ADMPLPL757NG · Registered 1 year
ADRIAN'S PRO PLUMBING LLCACTIVE
Richland, WA · License ADRIAPP781CN · Registered 4 years
ADRIATIC PLUMBING INCACTIVE
Bothell, WA · License ADRIAPI793RM · Registered 4 years
ADVANCE TESTING & SERVICE INCACTIVE
Marysville, WA · License ADVANTS782PL · Registered 3 years
ADVANCED MECHANICAL & PLUMBINGACTIVE
Seattle, WA · License ADVANMP795R3 · Registered 4 years
ADVANCED PIPE LINING TECH LLCACTIVE
Gig Harbor, WA · License ADVANPL785BU · Registered 4 years
ADVANCED PLUMBING & CONST LLCACTIVE
Vancouver, WA · License ADVANPC791RD · Registered 4 years
ADVANCED PLUMBING & RMDL LLCACTIVE
Kennewick, WA · License ADVANPR791OP · Registered 5 years
ADVANCED PLUMBING II LLCACTIVE
Snohomish, WA · License ADVANPI741N1 · Registered less than 1 year
ADVANCED PLUMBING II LLCACTIVE
Snohomish, WA · License ADVANPI790OW · Registered 4 years
ADVANCED SEWER SOLUTIONS INC.ACTIVE
Graham, WA · License ADVANSS786BJ · Registered 4 years
AEON MECHANICAL LLCACTIVE
Sumas, WA · License AEONMML761DM · Registered 2 years
AFFINITY HOME SOLUTIONACTIVE
East Wenatchee, WA · License AFFINHS779J1 · Registered 3 years
AFFORDABLE PLUMBING PROSACTIVE
Auburn, WA · License AFFORPP753NF · Registered 1 year
AFFORDABLE PLUMBING SPOKANEACTIVE
Spokane Valley, WA · License AFFORPS751B4 · Registered 1 year