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.
- DM BACKFLOW TESTING LLCRE-LICENSED
Tacoma, WA · License DMBACBT871DJ · First registered 2013
- DNA PLUMBINGEXPIRED
Everett, WA · License DNAPLP*837R8 · First registered 2017
- DNM PLUMBINGEXPIRED
Wenatchee, WA · License DNMPLP*790RN · First registered 2021
- DOCS PLUMBING LLCEXPIRED
Mount Vernon, WA · License DOCSPPL792RC · First registered 2021
- DOCTOR RESINEXPIRED
Vancouver, WA · License DOCTOR*891NH · First registered 2011
- DON KRUSE ELECTRIC INCSUSPENDED
Omak, WA · License DONKRKE791O2 · First registered 2021
Battle Ground, WA · License DONPIPJ782KD · First registered 2022
- DON PITNER JR WELL DRLLING LLCSUPERCEDED
Battle Ground, WA · License DONPIPJ794OA · First registered 2021
- DON ROSS PLUMBINGEXPIRED
Thorp, WA · License DONROP*190MZ · First registered 1981
- DON SCOLES PLUMBING INCEXPIRED
Princeton, ID · License DONSCSP954QP · First registered 2005
- DONE RIGHT PLUMBING LLCEXPIRED
Burlington, WA · License DONERRP794RF · First registered 2021
- DONE RIGHT PLUMBING LLCEXPIRED
Burlington, WA · License DONERRP833RF · First registered 2017
- DONOVAN PLUMBING INCRE-LICENSED
Shoreline, WA · License DONOVPI867KG · First registered 2014
- DOOTY CALLS PLMBG & HTG LLCEXPIRED
Seattle, WA · License DOOTYCP798MG · First registered 2021
- DOUBLE A PLUMBING LLCRE-LICENSED
Pasco, WA · License DOUBLPL860J4 · First registered 2014
- DOUBLE D PLUMBINGEXPIRED
Moses Lake, WA · License DOUBLDP830O5 · First registered 2017
- DOUBLE J PLUMBING LLCEXPIRED
Tulalip, WA · License DOUBLJP822ML · First registered 2018
- DOUGLAS THE PLUMBEREXPIRED
Arlington, WA · License DOUGLP*762J9 · First registered 2024
- DOUGLAS THE PLUMBEREXPIRED
Arlington, WA · License DOUGLP*837M1 · First registered 2017
- DOWN & DIRTY PLUMBING INCEXPIRED
Parma, ID · License DOWNDDP784NK · First registered 2022
- DOWN UNDER PLUMBING LLCEXPIRED
Tacoma, WA · License DOWNUUP782O1 · First registered 2022
- DOWNRIVER PLUMBING LLCRE-LICENSED
Spokane, WA · License DOWNRPL807NK · First registered 2020
- DOYLE PLUMBINGEXPIRED
Port Angeles, WA · License DOYLEP*935LL · First registered 2007
- DR PLUMBINGEXPIRED
Newcastle, WA · License DRPLUP*781NR · First registered 2022
- DR PLUMBING & HEATING GRP LLCSUSPENDED
Newcastle, WA · License DRPLUPH740ND · First registered 2026
- DRAIN EXPERTS INCEXPIRED
Spokane, WA · License DRAINEI848PP · First registered 2016
- DRAIN SOLUTIONS LLCEXPIRED
Vancouver, WA · License DRAINSL763C8 · First registered 2024
- DRAIN SURGEON, THERE-LICENSED
Richland, WA · License DRAIN**023K7 · First registered 1998
- DRAINFLO LLCEXPIRED
Tacoma, WA · License DRAINL*807L5 · First registered 2020
- DRILLER MAN, THEEXPIRED
Newport, WA · License DRILLM*793OA · First registered 2021
- DRIP DROP PLUMBING LLCOUT OF BUSINESS
Lacey, WA · License DRIPDDP761WK · First registered 2024
- DRISCOLL PLUMBING INCRE-LICENSED
Sammamish, WA · License DRISCPI952B1 · First registered 2005
- DRS MECHANICAL INCEXPIRED
Mukilteo, WA · License DRSMEMI7736F · First registered 2023
- DTH SERVICES LLCEXPIRED
Battle Ground, WA · License DTHSESL783BJ · First registered 2022
- DUGGER PLUMBINGEXPIRED
Lewiston, ID · License DUGGEP*762DR · First registered 2024
- DUGGER PLUMBINGEXPIRED
Lewiston, ID · License DUGGEP*811O4 · First registered 2019
- DUNCANS BACKFLOW AMB TEST RPRSUSPENDED
Friday Harbor, WA · License DUNCABA760RQ · First registered 2024
- DYNAMIC SEWER & DRAIN LLCSUPERCEDED
Gig Harbor, WA · License DYNAMSD789BU · First registered 2022
- DZ MECHANICALEXPIRED
Monroe, WA · License DZMECM*863NA · First registered 2014
- Defiance PlumbingEXPIRED
Sequim, WA · License DEFIAP*826BK · First registered 2018
- Drain KingEXPIRED
Longview, WA · License DRAINK*808MM · First registered 2020
- E M PLUMBING INCOUT OF BUSINESS
North Bend, WA · License EMPLUI*972B4 · First registered 2003
- E-Z WAY PLUMBING LLCEXPIRED
Monroe, WA · License EZWAYWP911QE · First registered 2009
- EAGLE EMERGENCY PLUMBING LLCEXPIRED
Woodinville, WA · License EAGLEEP777OQ · First registered 2023
- EAGLE EYE PLUMBING LLCEXPIRED
Darrington, WA · License EAGLEEP841O6 · First registered 2016
- EAGLE PLUMBING INCEXPIRED
Seabeck, WA · License EAGLEPI938QG · First registered 2007
- EAGLE RENOVATION & PLBG LLCEXPIRED
Centralia, WA · License EAGLERP772K3 · First registered 2023
- EASTSIDE PLUMBING SERV INCEXPIRED
Kirkland, WA · License EASTSPS839NJ · First registered 2017
- EASTWOOD PLUMBING/CONST INCRE-LICENSED
Sedro Woolley, WA · License EASTWPI061P7 · First registered 1994
- EC DC PLUMBING LLCEXPIRED
Lacey, WA · License ECDCPDP799NZ · First registered 2021