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.
- GOOD PLUMBERRE-LICENSED
Auburn, WA · License GOODPP*940O8 · First registered 2006
- GOOD PLUMBING LLCRE-LICENSED
Marysville, WA · License GOODPPL790D6 · First registered 2021
- GOODSON PLUMBING INCEXPIRED
Moscow, ID · License GOODSPI972LB · First registered 2003
Pullman, WA · License GORMSPH006BA · First registered 2000
- GORMSEN PLUMBING & HEATING INCSUSPENDED
Pullman, WA · License GORMSPH795QS · First registered 2021
- GOTT PLUMBING LLCEXPIRED
Enumclaw, WA · License GOTTPPL836O1 · First registered 2017
- GPH LLCEXPIRED
Olympia, WA · License GPHLLL*792RD · First registered 2021
- GPH LLCRE-LICENSED
Bremerton, WA · License GPHLLL*811ME · First registered 2019
- GPS PLUMBING INCEXPIRED
Monroe, WA · License GPSPLPI932JR · First registered 2007
- GR MECHANICAL LLCEXPIRED
Zillah, WA · License GRMECML7644K · First registered 2024
Lynnwood, WA · License GRAHAPI783NP · First registered 2022
- GRAHAM PLUMBING/MECHANICAL INCRE-LICENSED
Lynnwood, WA · License GRAHAPI948LO · First registered 2006
- GRANDPA'S WATER HTRS & FLTRTNOUT OF BUSINESS
Kennewick, WA · License GRANDWH791RF · First registered 2021
- GRANT MECHANICAL INCRE-LICENSED
Cle Elum, WA · License GRANTMI953LH · First registered 2005
- GRAYS HARBOR PLUMBING INCRE-LICENSED
Ocean Shores, WA · License GRAYSHP038D4 · First registered 1997
- GRC PRIME BATH LLCEXPIRED
Federal Way, WA · License GRCPRPB785BQ · First registered 2022
- GREAT NORTHERN PLUMBING SERVRE-LICENSED
Leavenworth, WA · License GREATNP867BM · First registered 2014
- GREAT WESTERN PLUMBINGEXPIRED
Gig Harbor, WA · License GREATWP866NG · First registered 2014
- GREATER SEATTLE PLUMBINGEXPIRED
Everett, WA · License GREATSP803QR · First registered 2020
- GREEN BUILT PLUMBING LLCEXPIRED
Shoreline, WA · License GREENBP812PQ · First registered 2019
Seattle, WA · License GREENCN7786R · First registered 2023
- GREENTECH CONSTRUCTION LLCSUSPENDED
Bellevue, WA · License GREENCL754BN · First registered 2025
- GREENWATERS PLUMBING LLCOUT OF BUSINESS
Portland, OR · License GREENPL827CL · First registered 2018
- GREENWOOD HEATING & A/CSUPERCEDED
Seattle, WA · License GREENHC785RN · First registered 2023
- GREENWOOD HEATING & A/CEXPIRED
Seattle, WA · License GREENHC793PD · First registered 2021
- GTG PLUMBING LLCSUSPENDED
Puyallup, WA · License GTGPLPL784DM · First registered 2022
- GUDINO PLUMBINGRE-LICENSED
Pacific, WA · License GUDINP*839PP · First registered 2017
- GUDINO PLUMBING LLCEXPIRED
Pacific, WA · License GUDINPL822JW · First registered 2018
- GUNDERSON PLUMBING LLCEXPIRED
Sultan, WA · License GUNDEPL782BQ · First registered 2022
- GUNDERSON PLUMBING LLCRE-LICENSED
Sultan, WA · License GUNDEPL842D1 · First registered 2016
- GUNNARS PLUMBING SERVICES LLCSUPERCEDED
Yacolt, WA · License GUNNAPS774J6 · First registered 2023
- Gilbert PlumbingRE-LICENSED
Auburn, WA · License GILBEP*913RG · First registered 2009
- Go Long Plumbing LLCEXPIRED
Everett, WA · License GOLONLP878OQ · First registered 2013
- Granger Brothers SolutionEXPIRED
Chehalis, WA · License GRANGBS763DG · First registered 2024
- Green Planet Plbg & Swr LLCEXPIRED
Seattle, WA · License GREENPP876RJ · First registered 2013
- H&B PLUMBING LLCOUT OF BUSINESS
Everett, WA · License HBPLUPL858PH · First registered 2015
- H.R.'s PlumbingEXPIRED
Elma, WA · License HRSPLP*902RF · First registered 2010
- H2FLOW PLUMBINGRE-LICENSED
Edmonds, WA · License H2FLOP*820MB · First registered 2018
- H2O MANAGEMENT SERVICES INCEXPIRED
Shelton, WA · License H2OMAMS779BU · First registered 2023
Auburn, WA · License H2OPLPM831CS · First registered 2017
- H2O PLUMBING CONTRACTORS INCRE-LICENSED
Sequim, WA · License H2OPLCI992NH · First registered 2001
- H2O WELL SERVICE INCSUSPENDED
Hayden Lake, ID · License H2OWEWS797MK · First registered 2021
- HAARSTAD, LES CEXPIRED
Lyle, WA · License HAARSLC066PD · First registered 1994
- HAARSTAD, LES CSUSPENDED
Lyle, WA · License HAARSLC791O4 · First registered 2021
- HALF PRICE PLUMBING LLCEXPIRED
Bothell, WA · License HALFPPP785OZ · First registered 2022
- HALLOWAY PLUMBING LLCEXPIRED
Tacoma, WA · License HALLOPL922OB · First registered 2008
- HANSEN PLUMBING LLCRE-LICENSED
Stanwood, WA · License HANSEPL805KM · First registered 2020
- HAPPY'S PLUMBING INCEXPIRED
Clackamas, OR · License HAPPYPI874QF · First registered 2013
- HARBOR MECHANICAL INCEXPIRED
Oak Harbor, WA · License HARBOMI022DF · First registered 1998
- HARBOR PLUMBINGRE-LICENSED
Olympia, WA · License HARBOP*991NW · First registered 2001