Plumbing contractors in Washington
2,262 active plumbing contractors are registered with Washington L&I. 4,448 registrations are on record in all, including expired and other statuses.
199 of the active plumbing contractors registered in Washington are based in other states.
2,262 active registrations
Businesses by registered name and license number. Show all 4,448 registrations on record, including expired.
Twisp, WA · License COLUMCP791O1 · Registered 5 years
- COLUMBIA DRAIN COMPANYACTIVE
Vancouver, WA · License COLUMDC854R9 · Registered 10 years
- COLUMBIA FIRE LLCACTIVE
Seattle, WA · License COLUMFL755RR · Registered less than 1 year
- COLUMBIA MECHANICAL INCACTIVE
Woodland, WA · License COLUMMI760NA · Registered 2 years
- COLUMBIA PUMP INCACTIVE
Pasco, WA · License COLUMPI784R2 · Registered 3 years
Kennewick, WA · License COLUMRP796PJ · Registered 4 years
- COLUMBIA RIVER PLUMBINGACTIVE
Napavine, WA · License COLUMRP773PO · Registered 2 years
Moses Lake, WA · License COMFOEP792O3 · Registered 5 years
Post Falls, ID · License COMFOHC765B2 · Registered 2 years
Woodinville, WA · License COMFOSU783DC · Registered 4 years
Sammamish, WA · License COMPAPH797RM · Registered 4 years
Puyallup, WA · License COMPAPD788N4 · Registered 4 years
La Conner, WA · License COMPAPP776DL · Registered 3 years
Mukilteo, WA · License COMPLPS776JL · Registered 3 years
- COMPOUND PLUMBINGACTIVE
Walla Walla, WA · License COMPOP*793NG · Registered 5 years
- COMPOUND SERVICES LLCACTIVE
Battle Ground, WA · License COMPOSL782O2 · Registered 4 years
- CONNECT PLUMBING LLCACTIVE
Colton, OR · License CONNEPL784B7 · Registered 4 years
Cashmere, WA · License CONNEPD758P2 · Registered less than 1 year
- CONTROL SOLUTIONS NW INCACTIVE
Spokane Valley, WA · License CONTRSN776QL · Registered 2 years
Graham, WA · License CONVEWH782OL · Registered 4 years
- CONVEY PLUMBINGACTIVE
Seattle, WA · License CONVEP*793OO · Registered 4 years
- COOK'S PLUMBING LLCACTIVE
Seattle, WA · License COOKSPL781N6 · Registered 4 years
- COOLWATER DRILLING INCACTIVE
Bremerton, WA · License COOLWDI784KD · Registered 4 years
Kirkland, WA · License COPPECP796RP · Registered 4 years
- COPPER MECHANICAL LLCACTIVE
Ridgefield, WA · License COPPEML791M2 · Registered 4 years
- COPPER PIPE PLUMBINGACTIVE
Olga, WA · License COPPEPP764PB · Registered 2 years
- COPPER PLUMBING LLCACTIVE
Rochester, WA · License COPPEPL795MR · Registered 5 years
Longview, WA · License CORTETP773B3 · Registered 3 years
- CORE MECHANICAL LLCACTIVE
La Center, WA · License COREMML793NB · Registered 5 years
Tacoma, WA · License CORNEPH793NZ · Registered 5 years
Tacoma, WA · License CORNEPS791O2 · Registered 3 years
- CORNERSTONE PLUMBING LLCACTIVE
Spokane Valley, WA · License CORNEPL798NZ · Registered 5 years
Tukwila, WA · License COSCOFP784P7 · Registered 3 years
Seattle, WA · License COSTCWC770K6 · Registered 3 years
- COULEE CITY PLUMBING LLCACTIVE
Coulee City, WA · License COULECP751NJ · Registered 1 year
- COUNTRY PLUMBINGACTIVE
Colville, WA · License COUNTP*781KQ · Registered 4 years
- COVINGTON PLUMBING INCACTIVE
Bellevue, WA · License COVINPI773LO · Registered 3 years
La Center, WA · License COWLIPP798RF · Registered 4 years
- COY'S PLUMBING LLCACTIVE
Prosser, WA · License COYSPPL784NB · Registered 4 years
- COYOTE PLUMBING LLCACTIVE
Buckley, WA · License COYOTPL761BU · Registered 2 years
- CPI PLUMBING & HEATINGACTIVE
Woodinville, WA · License CPIPLPH754T7 · Registered 1 year
- CR PLUMBINGACTIVE
Renton, WA · License CRPLUP*796O3 · Registered 5 years
Kingston, WA · License CRABTWD786LS · Registered 5 years
Washougal, WA · License CRAIGPS796NR · Registered 5 years
- CRB LLCACTIVE
Friday Harbor, WA · License CRBLLL*786RZ · Registered 3 years
Monroe, WA · License CREATPS796O2 · Registered 5 years
- CREEKSIDE PLUMBING LLCACTIVE
Cashmere, WA · License CREEKPL753K9 · Registered 1 year
- CRESCENT BUILDSACTIVE
Seattle, WA · License CRESCB*763JJ · Registered 2 years
- CRESCENT PLUMBINGACTIVE
Forks, WA · License CRESCP*781O1 · Registered 4 years
Gig Harbor, WA · License CRESCVP797NQ · Registered 5 years