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.
- BIG RED WRENCH PLUMBINGRE-LICENSED
Spokane, WA · License BIGRERW817RF · First registered 2019
- BIG SKY MECHANICAL LLCEXPIRED
Spokane, WA · License BIGSKSM954KQ · First registered 2005
Roy, WA · License BIGGEPS763JW · First registered 2024
- BILL BLAIR PLUMBING LLCRE-LICENSED
Seabeck, WA · License BILLBBP813DH · First registered 2019
Yakima, WA · License BILLSPB827DL · First registered 2018
- BILLS PLUMBING & GASRE-LICENSED
Lynnwood, WA · License BILLSPG010JK · First registered 1999
- BION ISLAND PLUMBING LLCRE-LICENSED
Eastsound, WA · License BIONIIP880ON · First registered 2012
- BIRD DOG PLBG&BCKFLW TST LLCOUT OF BUSINESS
Tacoma, WA · License BIRDDDP762U2 · First registered 2024
- BITTERROOT PLUMBINGEXPIRED
Sandpoint, ID · License BITTEP*825C3 · First registered 2018
Lacey, WA · License BJFISPS006K6 · First registered 2000
- BJORNSON PLUMBING LLCEXPIRED
Cle Elum, WA · License BJORNPL873JW · First registered 2013
- BK PLUMBING LLCEXPIRED
Yelm, WA · License BKPLUPL765CN · First registered 2024
- BLACK DIAMOND PLUMBING LLCEXPIRED
Olympia, WA · License BLACKDP808NC · First registered 2020
- BLACK DIAMOND SERVICES LLCRE-LICENSED
Brush Prairie, WA · License BLACKDS865CL · First registered 2014
- BLACK DOG INDUSTRIES LLCOUT OF BUSINESS
Richland, WA · License BLACKDI792OB · First registered 2021
- BLACK HILLS MECHANICALEXPIRED
Olympia, WA · License BLACKHM790MG · First registered 2021
- BLAKE'S BACKFLOW SERVICE LLCEXPIRED
Lynnwood, WA · License BLAKEBS772L2 · First registered 2023
- BLAKE'S BACKFLOW SERVICE LLCEXPIRED
Lynnwood, WA · License BLAKEBS810CG · First registered 2019
- BLD ROOTEREXPIRED
Seattle, WA · License BLDROR*772PD · First registered 2023
- BLUE COLLAR EMPIRE LLCEXPIRED
North Bend, WA · License BLUECCE763O7 · First registered 2024
- BLUE MOUNTAIN PLUMBING LLCRE-LICENSED
Colville, WA · License BLUEMMP946CZ · First registered 2006
- BLUE PLUMBING LLCRE-LICENSED
Orting, WA · License BLUEPPL881QH · First registered 2012
- BLUE RIBBON PLUMBINGEXPIRED
Saint Maries, ID · License BLUERRP761D1 · First registered 2024
- BLUE SKIES PLUMBING LLCSUSPENDED
Spokane Valley, WA · License BLUESSP764CL · First registered 2024
- BLUE WATER PLUMBING LLCEXPIRED
Winlock, WA · License BLUEWWP820OP · First registered 2018
- BLUE WEST MECHANICAL LLCRE-LICENSED
Battle Ground, WA · License BLUEWWM842QH · First registered 2016
- BOB BENSON & COEXPIRED
Bonney Lake, WA · License BOBBEBC944OE · First registered 2006
- BOB LARSON PLUMBING LLCRE-LICENSED
Tacoma, WA · License BOBLALP957NK · First registered 2005
- BOB'S PLUMBINGRE-LICENSED
Yakima, WA · License BOBSPP*881DG · First registered 2012
- BOBBY T'S PLUMBING INCOUT OF BUSINESS
Shoreline, WA · License BOBBYTP939BR · First registered 2007
- BOGGS PLUMBING LLCEXPIRED
Sedro Woolley, WA · License BOGGSPL794N5 · First registered 2021
- BOGGS PLUMBING LLCRE-LICENSED
Sedro Woolley, WA · License BOGGSPL852O3 · First registered 2015
- BOLIN PLUMBING SERVICE INCEXPIRED
Ritzville, WA · License BOLINPS952DW · First registered 2005
- BOND PLUMBING LLCRE-LICENSED
Lynnwood, WA · License BONDPPL820BH · First registered 2018
- BOOKER'S PLUMBING LLCRE-LICENSED
Mount Vernon, WA · License BOOKEPL861BS · First registered 2014
- BORG PLUMBING LLCOUT OF BUSINESS
Easton, WA · License BORGPPL785RK · First registered 2022
- BOYD'S CUSTOM PLUMBINGEXPIRED
Castle Rock, WA · License BOYDSCP793O1 · First registered 2021
- BOYD'S CUSTOM PLUMBINGRE-LICENSED
Kelso, WA · License BOYDSCP812K1 · First registered 2019
- BOYD'S CUSTOM PLUMBING LLCRE-LICENSED
Kelso, WA · License BOYDSCP846KO · First registered 2016
- BP MECHANICAL PLUMBING LLCEXPIRED
Selah, WA · License BPMECMP832R2 · First registered 2017
- BRADBURY CUSTOM PLUMBINGEXPIRED
Lynnwood, WA · License BRADBCP101MJ · First registered 1990
- BRADEN PLUMBINGOUT OF BUSINESS
Chehalis, WA · License BRADEP*797NQ · First registered 2021
- BRADEN PLUMBINGRE-LICENSED
Chehalis, WA · License BRADEP*968NS · First registered 2004
- BRADFORD PLUMBING INCRE-LICENSED
Yakima, WA · License BRADFP*258P3 · First registered 1975
- BRADLEY PLUMBING INCEXPIRED
Lewiston, ID · License BRADLPI855RS · First registered 2015
- BRANDT'S PLUMBINGRE-LICENSED
Centralia, WA · License BRANDP*159QQ · First registered 1985
- BRASUELL PLUMBINGRE-LICENSED
White Salmon, WA · License BRASUP*896DQ · First registered 2011
- BREMER PLUMBINGEXPIRED
Everett, WA · License BREMEP*787D4 · First registered 2022
- BREMER PLUMBING LLCSUSPENDED
Everett, WA · License BREMEPL7504A · First registered 2025
- BREMERTON PLUMBNG & ROOTER SVCRE-LICENSED
Bremerton, WA · License BREMEPR873R6 · First registered 2013