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.

2,266 active registrations

Businesses by registered name and license number. Show all 4,450 registrations on record, including expired.

NICHOLSON DRILLING INCACTIVE
Port Orchard, WA · License NICHODI783KB · Registered 3 years
NIELSEN PUMP SERVICE LLCACTIVE
Burbank, WA · License NIELSPS752BP · Registered 1 year
NIRVANA MECHANICAL LLCACTIVE
Tukwila, WA · License NIRVAML787BQ · Registered 4 years
NIRVANA PLUMBING INCACTIVE
Kent, WA · License NIRVAPI794RH · Registered 4 years
NOBLE PLUMBING LLCACTIVE
Snoqualmie, WA · License NOBLEPL772BE · Registered 3 years
NOBLEMAN'S PLUMBINGACTIVE
Deer Park, WA · License NOBLEP*794MB · Registered 3 years
NOKK CONSTRUCTION LLCACTIVE
Nine Mile Falls, WA · License NOKKCCL794OO · Registered 5 years
NORDIC TEMPERATURE CONTROL INCACTIVE
Burlington, WA · License NORDITC744BF · Registered less than 1 year
NORTH COAST PLUMBING INCACTIVE
North Bend, WA · License NORTHCP788KB · Registered 4 years
NORTH FORGE PLUMBING LLCACTIVE
Everett, WA · License NORTHFP741OW · Registered less than 1 year
NORTH FORK PLUMBING LLCACTIVE
La Center, WA · License NORTHFP782QN · Registered 3 years
NORTH HILL SEWER & DRAIN LLCACTIVE
Des Moines, WA · License NORTHHS756C4 · Registered less than 1 year
NORTH PEAK PLUMBING LLCACTIVE
Bothell, WA · License NORTHPP743LW · Registered less than 1 year
NORTH PLUMBING LLCACTIVE
Ariel, WA · License NORTHPL772K5 · Registered 3 years
NORTH SHORE PLUMBING LLCACTIVE
Bellingham, WA · License NORTHSP767K2 · Registered 2 years
NORTHERN CREST PLUMBINGACTIVE
Chehalis, WA · License NORTHCP749JO · Registered less than 1 year
NORTHERN LAKES PLUMBING CO LLCACTIVE
Hauser, ID · License NORTHLP784KQ · Registered 4 years
NORTHERN LGHTS CONST GROUP LLCACTIVE
Elk, WA · License NORTHLC753LE · Registered 1 year
NORTHERN PEAK PLMNG & CONT LLCACTIVE
Mead, WA · License NORTHPP744K6 · Registered less than 1 year
NORTHERN WATER & POWER LLCACTIVE
Post Falls, ID · License NORTHWP740M3 · Registered less than 1 year
NORTHERN WATER & POWER LLCACTIVE
Post Falls, ID · License NORTHWP764J2 · Registered 2 years
NORTHERN WATERS INCACTIVE
Edmonds, WA · License NORTHWI785R7 · Registered 3 years
NORTHSIDE HEAT & COOLACTIVE
Colville, WA · License NORTHHC777R8 · Registered 2 years
NORTHSTAR PLUMBING LLCACTIVE
Battle Ground, WA · License NORTHPL753NA · Registered 1 year
NORTHWEST BATH SPECIALISTS LLCACTIVE
Greenacres, WA · License NORTHBS781DA · Registered 4 years
NORTHWEST DRAIN CLNG/CMR INSPSACTIVE
Newport, WA · License NORTHDC816QR · Registered 6 years
NORTHWEST FIRE SYSTEMS LLCACTIVE
Kent, WA · License NORTHFS790NU · Registered 5 years
NORTHWEST HYDROJETTING LLCACTIVE
Tacoma, WA · License NORTHHL769BD · Registered 2 years
NORTHWEST MECHANICALACTIVE
Woodinville, WA · License NORTHM*760NG · Registered 2 years
NORTHWEST MECHANICAL GROUP LLCACTIVE
Canby, OR · License NORTHMG756LE · Registered 1 year
NORTHWEST PIPEWORKS LLCACTIVE
Hood River, OR · License NORTHPL787PD · Registered 3 years
NORTHWEST PLBG/WATERWORKS INCACTIVE
Friday Harbor, WA · License NORTHPI790MG · Registered 5 years
NORTHWEST PLUMBING CNNCTN INCACTIVE
Tacoma, WA · License NORTHPC793MF · Registered 4 years
NORTHWEST PLUMBING CONTRS INCACTIVE
Arlington, WA · License NORTHPC797PL · Registered 4 years
NORTHWEST PLUMBING LLCACTIVE
Kent, WA · License NORTHPL778LB · Registered 3 years
NORTHWEST PLUMBING SLTNS LLCACTIVE
Kent, WA · License NORTHPS793NQ · Registered 4 years
NORTHWEST PLUMBING SRVCS INCACTIVE
Bellingham, WA · License NORTHPS797O3 · Registered 5 years
NORTHWEST RFRG SERV LLCACTIVE
West Richland, WA · License NORTHRS763PN · Registered 1 year
NORTHWEST WATER TREATMENT INCACTIVE
Lacey, Wa · License NORTHWT994OK · Registered 25 years
NOWAK CUSTOM PLUMBING LLCACTIVE
Snohomish, WA · License NOWAKCP793O7 · Registered 5 years
NPM PLUMBING & MECH INCACTIVE
Seattle, WA · License NPMPLPM773JR · Registered 3 years
NW Custom Plumbing LLCACTIVE
Mount Vernon, WA · License NWCUSCP791RM · Registered 4 years
NW EVERGREEN PLUMBING LLCACTIVE
Tacoma, WA · License NWEVEEP745MO · Registered less than 1 year
NW PLUMBING & REPAIR LLCACTIVE
Des Moines, WA · License NWPLUPR760CE · Registered 1 year
NW SUNDANCE SERVICES INCACTIVE
Clackamas, OR · License NWSUNSS792MK · Registered 5 years
Nick of Time PlumbingACTIVE
Marysville, WA · License NICKTTP751LB · Registered 1 year
O'BRIEN PLUMBINGACTIVE
Seattle, WA · License OBRIEP*776L7 · Registered 3 years
O'CONNELL DRILLING/SUPPLY LLCACTIVE
Brewster, WA · License OCONNDL780KC · Registered 4 years
O'Grady Plumbing LLCACTIVE
Bellevue, WA · License OGRADPL779OH · Registered 3 years
O'NEILL PLUMBING COACTIVE
Seattle, WA · License ONEILPC793ND · Registered 5 years