Plumbing contractors in Washington
2,263 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 2,263 active registrations.
- SHAFFER & SONS PLUMBINGEXPIRED
Renton, WA · License SHAFFSP793O7 · First registered 2021
- SHANNON HEIGHTS HEATING INCEXPIRED
Arlington, WA · License SHANNHH783K3 · First registered 2022
- SHARP PLUMBING LLCEXPIRED
Enumclaw, WA · License SHARPPL888CW · First registered 2012
- SHAW PLUMBING INCRE-LICENSED
Chelan, WA · License SHAWPI*055QL · First registered 1995
- SHAW PLUMBING SERVICES LLCEXPIRED
Spokane, WA · License SHAWPPS797NE · First registered 2021
- SHEPHARD PLUMBING LLCRE-LICENSED
Yakima, WA · License SHEPHPL864D6 · First registered 2014
- SHERM'S PLUMBINGEXPIRED
Everett, WA · License SHERMP*773PP · First registered 2023
- SHERM'S PLUMBINGRE-LICENSED
Everett, WA · License SHERMP*831JQ · First registered 2017
- SHIRLEY PLUMBING LLCEXPIRED
Black Diamond, WA · License SHIRLPL789NB · First registered 2022
- SHOCKLEY PLUMBINGEXPIRED
Granite Falls, WA · License SHOCKP*044KN · First registered 1996
- SHOW TIME PLUMBING & ROOTEREXPIRED
North Hollywood, CA · License SHOWTTP815JB · First registered 2019
- SIERRA PLUMBING INCRE-LICENSED
Pasco, WA · License SIERRPI947CA · First registered 2006
- SIGNATURE PLUMBINGEXPIRED
Wenatchee, WA · License SIGNAP*794OA · First registered 2021
- SIGNATURE PLUMBINGRE-LICENSED
Wenatchee, WA · License SIGNAP*951KF · First registered 2005
- SILVERSTAR PLUMBING LLCRE-LICENSED
Renton, WA · License SILVEPL868RA · First registered 2014
- SIMPLE PLUMBER LLCRE-LICENSED
Seattle, WA · License SIMPLPL870CN · First registered 2013
- SIMPSON&SON PLUMBING LLCSUSPENDED
Marysville, WA · License SIMPSPL761CN · First registered 2024
- SINGLETERRY & SON ENT LLCEXPIRED
Snohomish, WA · License SINGLSE864MN · First registered 2014
- SJS MECHANICAL SERVICES LLCRE-LICENSED
Seattle, WA · License SJSMEMS951KL · First registered 2005
- SKY PLUMBING LLCEXPIRED
Graham, WA · License SKYPLPL793PK · First registered 2021
- SKY PLUMBING LLCRE-LICENSED
Graham, WA · License SKYPLPL794JT · First registered 2021
- SKYBEAR PLUMBINGEXPIRED
Yakima, WA · License SKYBEP*781KQ · First registered 2022
- SKYLAR PLUMBING LLC CORE-LICENSED
Lynnwood, WA · License SKYLAPL883P2 · First registered 2012
- SKYLINE CONTRACTING SERVICESEXPIRED
Lynnwood, WA · License SKYLICS785DN · First registered 2022
- SKYLINE PLUMBING LLCEXPIRED
Troutdale, OR · License SKYLIPL942RK · First registered 2006
- SKYWAY PLUMBING INCRE-LICENSED
Renton, WA · License SKYWAPI910MP · First registered 2009
- SLOAN'S PLUMBING INCRE-LICENSED
Spokane, WA · License SLOANPI935JJ · First registered 2007
- SMALL TOWN PLUMBING LLCEXPIRED
Buckley, WA · License SMALLTP784P7 · First registered 2022
- SMILEY'S PLUMBING INCEXPIRED
Aberdeen, WA · License SMILEPI021L6 · First registered 1998
- SMITH BROTHERS PLUMBING INCEXPIRED
Spokane, WA · License SMITHBP959NJ · First registered 2005
- SMITH PLUMBINGEXPIRED
Tulalip, WA · License SMITHP*875LM · First registered 2013
- SMITH PLUMBING INCEXPIRED
Bellingham, WA · License SMITHPI939M5 · First registered 2007
- SMITH QUALITY PLUMBING LLCEXPIRED
Spangle, WA · License SMITHQP801N1 · First registered 2020
- SNO VALLEY PLUMBINGEXPIRED
Monroe, WA · License SNOVAVP782JJ · First registered 2022
- SNO VALLEY PLUMBINGRE-LICENSED
Monroe, WA · License SNOVAVP950RK · First registered 2005
- SNO-KING PLUMBING LLCRE-LICENSED
Lynnwood, WA · License SNOKIPL870KP · First registered 2013
- SNOFALLS PLUMBING LLCOUT OF BUSINESS
Snoqualmie, WA · License SNOFAPL796RG · First registered 2021
- SNOFALLS PLUMBING LLCEXPIRED
Snoqualmie, WA · License SNOFAPL866KM · First registered 2014
- SNOOPS PLUMBING LLCRE-LICENSED
Renton, WA · License SNOOPPL817BB · First registered 2019
- SNOQUALMIE FALLS PLUMBINGSUSPENDED
Preston, WA · License SNOQUFP781DB · First registered 2022
- SNOQUALMIE FALLS PLUMBINGRE-LICENSED
Preston, WA · License SNOQUFP852B3 · First registered 2015
- SODO MECHANICAL LLCSUSPENDED
Auburn, WA · License SODOMML782RZ · First registered 2022
- SOFT WATER SPECIALISTS LLCEXPIRED
Kennewick, WA · License SOFTWWS884OJ · First registered 2012
- SOLO PLUMBING & MECH LLCEXPIRED
Federal Way, WA · License SOLOPPM819KT · First registered 2019
- SOLOMON PLUMBING COEXPIRED
New Hudson, MI · License SOLOMPC819QL · First registered 2019
- SOLUTIONS PLUMBING LLCEXPIRED
Spanaway, WA · License SOLUTPL802CE · First registered 2020
- SONNY'S PLUMBINGEXPIRED
Spokane, WA · License SONNYP*062K4 · First registered 1994
- SOREANO'S PLUMBINGOUT OF BUSINESS
Seattle, WA · License SOREAP*798OS · First registered 2022
- SOUND MECHANICALEXPIRED
Seattle, WA · License SOUNDM*803N5 · First registered 2020
- SOUND MECHANICAL & IND INCRE-LICENSED
Auburn, WA · License SOUNDMI044BE · First registered 1996