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.
- HARBOR PLUMBING SOUTH LLCRE-LICENSED
Oak Harbor, WA · License HARBOPS813MR · First registered 2019
- HARBOR PUMP COMPANY INCEXPIRED
Olalla, WA · License HARBOPC777BT · First registered 2023
- HARBOR ROOTER LLCRE-LICENSED
Aberdeen, WA · License HARBORL856R4 · First registered 2015
- HARDIE ENTERPRISES LLCRE-LICENSED
Lacey, WA · License HARDIEL782NP · First registered 2022
- HARLOW BROTHERS PLBG & HTGEXPIRED
Olympia, WA · License HARLOBP789NR · First registered 2022
- HARPO'S PLUMBING LLCEXPIRED
Rathdrum, ID · License HARPOPL828MP · First registered 2018
- HARRIS PLUMBING LLCEXPIRED
Kennewick, WA · License HARRIPL774OH · First registered 2023
- HARRIS PLUMBING LLCRE-LICENSED
Kennewick, WA · License HARRIPL807O9 · First registered 2020
- HARRY'S PLUMBINGRE-LICENSED
Everett, WA · License HARRYP*965D4 · First registered 2004
- HAUGEN PLUMBING LLCEXPIRED
Spanaway, WA · License HAUGEPL764BB · First registered 2024
- HAWK MECHANICAL CONTRS INCSUPERCEDED
Monroe, WA · License HAWKMMC795MT · First registered 2021
- HD PARTNERS LLCEXPIRED
Seattle, WA · License HDPARPL790NQ · First registered 2021
- HEAD MECHANICAL INCRE-LICENSED
Cle Elum, WA · License HEADMMI912O3 · First registered 2009
Zebulon, NC · License HEARTPS806ON · First registered 2020
- HEATCIRC LLCEXPIRED
Federal Way, WA · License HEATCL*837PD · First registered 2017
- HEFFERNAN ENTERPRISES INCEXPIRED
Portland, OR · License HEFFEEI984OO · First registered 2002
- HENCO PLUMBINGEXPIRED
Ridgefield, WA · License HENCOP*7829O · First registered 2022
- HENCO PLUMBING SERVICES LLCEXPIRED
Ridgefield, WA · License HENCOPS799P8 · First registered 2021
- HENDRICKSON PLUMBING LLCRE-LICENSED
Woodland, WA · License HENDRPL962RZ · First registered 2004
- HENRICKSON PLUMBINGRE-LICENSED
Cheney, WA · License HENRIP*803CG · First registered 2020
- HENRY & SONS PLUMBING LLCEXPIRED
Puyallup, WA · License HENRYSP931PS · First registered 2007
- HERE TO PLUMB INCEXPIRED
Arlington, WA · License HEREPPI789BM · First registered 2022
- HERMANSON COMPANY LLPRE-LICENSED
Kent, WA · License HERMACL792NW · First registered 2021
- HERO PLUMBING LLCRE-LICENSED
Snohomish, WA · License HEROPPL863N1 · First registered 2014
- HIGHLAND COMPANY CONTRNG LLCEXPIRED
Woodland, WA · License HIGHLCC773PZ · First registered 2023
- HIGHLANDER PUMP & WELL SVC LLCSUSPENDED
Everson, WA · License HIGHLPW791OC · First registered 2021
- HILLESTAD PLUMBINGEXPIRED
Brush Prairie, WA · License HILLEP*788QS · First registered 2022
- HILLESTAD PLUMBINGEXPIRED
Brush Prairie, WA · License HILLEP*922OD · First registered 2008
- HIS HANDS PLUMBING LLCSUSPENDED
Lake Stevens, WA · License HISHAHP750OE · First registered 2025
- HIX PLUMBING LLCSUPERCEDED
Lewiston, ID · License HIXPLPL784MJ · First registered 2022
- HIX PLUMBING LLCRE-LICENSED
Lewiston, ID · License HIXPLPL792KD · First registered 2021
- HMT PLUMBING LLCEXPIRED
Bothell, WA · License HMTPLPL772LO · First registered 2023
- HOBI PLUMBINGRE-LICENSED
Lopez Island, WA · License HOBIPP*916QE · First registered 2009
- HOBI PLUMBING LLCRE-LICENSED
Lopez Island, WA · License HOBIPPL823RU · First registered 2019
- HODGE PLUMBING COMPANY LLCRE-LICENSED
Suquamish, WA · License HODGEPC814CF · First registered 2019
- HODGES PLUMBINGEXPIRED
Bellingham, WA · License HODGEP*765K1 · First registered 2024
- HODGES PLUMBINGEXPIRED
Bellingham, WA · License HODGEP*883CL · First registered 2012
- HOFFMAN PLUMBING LLCEXPIRED
Olympia, WA · License HOFFMPL953PO · First registered 2005
- HOFFMAN QUALITY WATEREXPIRED
Walla Walla, WA · License HOFFMQW061R7 · First registered 1994
- HOLLOW LOG PLUMBINGRE-LICENSED
Langley, WA · License HOLLOLP850PH · First registered 2015
- HOLLOWAY PLUMBINGEXPIRED
Issaquah, WA · License HOLLOP*781MJ · First registered 2022
- HOLLY'S PLUMBINGEXPIRED
Veradale, WA · License HOLLYP*971B3 · First registered 2003
- HOLMSTAD'S PLUMBING INCEXPIRED
Everett, WA · License HOLMSPI005M9 · First registered 2000
- HOLMSTAD'S PLUMBING INCSUSPENDED
Everett, WA · License HOLMSPI777BU · First registered 2023
- HOMETOWN PLUMBING LLCRE-LICENSED
Post Falls, ID · License HOMETPL803JW · First registered 2020
- HOMETOWN PROPERTY MNGMT INCEXPIRED
Olympia, WA · License HOMETPM781O3 · First registered 2022
- HOMOLA PLUMBING INCRE-LICENSED
Battle Ground, WA · License HOMOLPI983PN · First registered 2002
- HOPE PLUMBING LLCEXPIRED
Spokane, WA · License HOPEPPL822PQ · First registered 2018
Seabeck, WA · License HORIZPH005DF · First registered 2000
- HORIZON PLUMBINGEXPIRED
Richland, WA · License HORIZP*844PC · First registered 2016