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.

STEWART MECHANICAL INCACTIVE
Brush Prairie, WA · License STEWAMI798MW · Registered 5 years
STEWIE'S FIRE PROTECTION LLCACTIVE
Des Moines, WA · License STEWIFP753JH · Registered 1 year
STILLWATERS PLUMBINGACTIVE
Cashmere, WA · License STILLP*786KF · Registered 4 years
STIRRETT-JOHNSEN INCACTIVE
Silverdale, WA · License STIRRI*791NE · Registered 5 years
STITES PLUMBING LLCACTIVE
Tahuya, WA · License STITEPL747MH · Registered less than 1 year
STOIC PLUMBING LLCACTIVE
Seattle, WA · License STOICPL751BH · Registered 1 year
STR PLUMBING SERVICES LLCACTIVE
Camano Island, WA · License STRPLPS742JC · Registered less than 1 year
STREAMLINE GENERAL CONST LLCACTIVE
Lake Tapps, WA · License STREAGC751LF · Registered 1 year
STREAMLINE PLUMBINGACTIVE
Vancouver, WA · License STREAP*772KC · Registered 3 years
STRICKLAND PLUMBING LLCACTIVE
Renton, WA · License STRICPL750MH · Registered 1 year
STURM HEATING & A/CACTIVE
Spokane, WA · License STURMHC782JE · Registered 4 years
SULLIVAN PLUMBINGACTIVE
Bellingham, WA · License SULLIP*755DJ · Registered 1 year
SUMMERSON PLUMBING INCACTIVE
Vancouver, WA · License SUMMEPI781QC · Registered 3 years
SUMMIT FIRE & SECURITY LLCACTIVE
Saint Paul, MN · License SUMMIFS741N4 · Registered less than 1 year
SUMMIT MECHANICALACTIVE
Maple Valley, WA · License SUMMIM*798O9 · Registered 4 years
SUMMIT PLUMBING LLCACTIVE
Vancouver, WA · License SUMMIPL796O7 · Registered 3 years
SUN GLOW INCACTIVE
Portland, OR · License SUNGLGI741DP · Registered less than 1 year
SUNDANCE ENERGY SERVICES INCACTIVE
Bothell, WA · License SUNDAES745JB · Registered less than 1 year
SUNRISE PLUMBINGACTIVE
Kent, WA · License SUNRIP*794NT · Registered 4 years
SUNSET AIR INCACTIVE
Lacey, WA · License SUNSEAI790RC · Registered 4 years
SUPERIOR CUSTOM PLUMBING LLCACTIVE
Marysville, WA · License SUPERCP783DC · Registered 4 years
SUPERIOR PLUMBING AND HTG INCACTIVE
Burien, WA · License SUPERPH795O9 · Registered 4 years
SUPREME PLUMBING COMPANY, LLCACTIVE
Kingston, WA · License SUPREPC783BJ · Registered 4 years
SUPREME PLUMBING SERVICEACTIVE
Vancouver, WA · License SUPREPS747K2 · Registered less than 1 year
SVA PLUMBING LLCACTIVE
Renton, WA · License SVAPLPL778MF · Registered 3 years
SW1 PLUMBING & MECHANICAL LLCACTIVE
Kirkland, WA · License SW1PLPM797O7 · Registered 4 years
SWAT PLUMBING LLCACTIVE
Vancouver, WA · License SWATPPL750CQ · Registered 1 year
SWEGLE PUMPS LLCACTIVE
Reardan, WA · License SWEGLPL789RW · Registered 3 years
SWIFT PLUMBING & HEATING INCACTIVE
Poulsbo, WA · License SWIFTPH794ND · Registered 5 years
SageWater, LLCACTIVE
Alexandria, VA · License SAGEWL*777JK · Registered 3 years
SeaTac PlumbingACTIVE
Tacoma, WA · License SEATAP*755QO · Registered less than 1 year
Secure Plumbing & Htg Serv LLCACTIVE
Ellensburg, WA · License SECURPH783PC · Registered 4 years
Settle In Construction LLCACTIVE
Walla Walla, WA · License SETTLCL775J6 · Registered 3 years
Shane's Diversified Pump SVCACTIVE
Yakima, WA · License SHANEDP780C4 · Registered 4 years
Smith Generation PlumbingACTIVE
Puyallup, WA · License SMITHGP756RE · Registered less than 1 year
Specialty Pump & Plumbing IncACTIVE
Snohomish, WA · License SPECIPP776K2 · Registered 3 years
Steves Pump & Well Service INCACTIVE
Port Orchard, WA · License STEVEPW780RN · Registered 3 years
Stollwerck Plumbing LLCACTIVE
Mukilteo, WA · License STOLLPL780CJ · Registered 4 years
T & C PLUMBINGACTIVE
Spokane Valley, WA · License TCPLUCP771D3 · Registered 3 years
T & J PLUMBING/MECHANICALACTIVE
Tacoma, WA · License TJPLUJP785NC · Registered 4 years
T & J'S PLUMBING CONNECTN LLCACTIVE
Tacoma, WA · License TJSPLJP794OS · Registered 5 years
T & S PLUMBING INCACTIVE
Vancouver, WA · License TSPLUSP781NA · Registered 4 years
T L C PLUMBING COMPANYACTIVE
Bremerton, WA · License TLCPLLC764QO · Registered 1 year
T V K PLUMBING INCACTIVE
Lynden, WA · License TVKPLVK774BE · Registered 3 years
TACOMA PLBG/HTG INCACTIVE
Tacoma, WA · License TACOMPI780LP · Registered 4 years
TACOMA'S OWN PLUMBING SVS LLCACTIVE
Tacoma, WA · License TACOMOP773QG · Registered 2 years
TACTICAL PLUMBING & PIPING LLCACTIVE
Spokane, WA · License TACTIPP791MK · Registered 5 years
TAJ PLUMBING LLCACTIVE
Seattle, WA · License TAJPLPL796PD · Registered 5 years
TAPANI INCACTIVE
Battle Ground, WA · License TAPANI*753M5 · Registered 1 year
TAPANI PLUMBING INCACTIVE
Battle Ground, WA · License TAPANPI795MB · Registered 5 years