Plumbing contractors licensed in Washington

Every active Washington license that lists plumbing work, sorted by name.

• Kp Plumbing & Mechanical LLC
  Plumbing · Spokane Valley · #KPPLUPM780D3
  Active Insurance current
• Kpex Development LLC
  Plumbing · Vancouver · #KPEXDDL742JF
  Active Insurance current
• Kruse Plumbing
  Plumbing · Vancouver · #KRUSEP*796NU
  Active Insurance current
• Kysar Mechanical INC
  Plumbing · Davenport · #KYSARMI792NW
  Active Insurance current
• L & Z Plumbing Services LLC
  Plumbing · Tukwila · #LZPLUZP773D1
  Active Insurance current
• L W Smith Pump Service INC
  Plumbing, Landscaping · Pasco · #LWSMIWS772BU
  Active Insurance current
• L-Bow Grease LLC
  Plumbing · East Wenatchee · #LBOWGGL783R7
  Active Insurance current
• L&r Plumbing LLC
  Plumbing · Buckley · #LRPLUPL745BB
  Active Insurance current
• Lacasse Plumbing LLC
  Plumbing · Sultan · #LACASPL765J5
  Active Insurance current
• Lad Irrigation CO INC
  Plumbing, Landscaping · Moses Lake · #LADIRIC780DC
  Active Insurance current
• Lake City Plumbing
  Plumbing · Mountlake Ter · #LAKECCP791MG
  Active Insurance expiring soon
• Lake Hills Rooter LLC
  Plumbing · Bellevue · #LAKEHHR747MF
  Active Insurance current
• Lakeshore Const Svcs LLC
  Plumbing · Kirkland · #LAKESCS7616Q
  Active Insurance current
• Lakeside Heating & a/C
  Plumbing · Coeur D Alene · #LAKESHC748ML
  Active Insurance current
• Lakeside Plumbing & Htg INC
  Plumbing · Seattle · #LAKESPH797OZ
  Active Insurance expiring soon
• Lakeview Plumbing
  Plumbing · Kirkland · #LAKEVP*791RZ
  Active Insurance current
• Lakewood Plumbing/Mechncal INC
  Plumbing · Stanwood · #LAKEWPI793NR
  Active Insurance current
• Landmark Plumbing LLC
  Plumbing · Coupeville · #LANDMPL799NZ
  Active Insurance current
• Lane Plumbing Services LLC
  Plumbing · Port Orchard · #LANEPPS773KA
  Active Insurance current
• Langford Plumbing INC
  Plumbing · Redmond · #LANGFPI789Q8
  Active Insurance expiring soon
• Lavergne Plumbing & Heating
  Plumbing · Everson · #LAVERPH798NZ
  Active Insurance current
• Law Plumbing INC
  Plumbing · Eatonville · #LAWPLPI782B7
  Active Insurance current
• Lc Mechanical INC
  Plumbing · Fall River · #LCMECMI744MU
  Active Insurance current
• Leakless Plumbing LLC
  Plumbing · Port Orchard · #LEAKLPL752PA
  Active Insurance current
• Leavenworth Plumbing Inc.
  Plumbing · Peshastin · #LEAVEPI777R1
  Active Insurance current
• Lebos Plumbing LLC
  Plumbing · Kettle Falls · #LEBOSPL796RZ
  Active Insurance current
• Legacy Plumbing & Excavation
  Plumbing · Vancouver · #LEGACPE769LQ
  Active Insurance current
• Legacy Plumbing Group LLC
  Plumbing · Lake Stevens · #LEGACPG756B3
  Active Insurance current
• Legacy Plumbing/Mechanical LLC
  Plumbing · Puyallup · #LEGACPL783C2
  Active Insurance current
• Legend Plumbing & Mech LLC
  Plumbing · Richland · #LEGENPM787B6
  Active Insurance current
• Leppala Plumbing LLC
  Plumbing · Bellingham · #LEPPAPL761B9
  Active Insurance current
• Lesperance Plumbing LLC
  Plumbing · Tacoma · #LESPEPL771BR
  Active Insurance current
• Let It Flow Plumbing LLC
  Plumbing · Everett · #LETITIF772P3
  Active Insurance current
• Lev's Plumbing CO
  Plumbing · Redmond · #LEVSPPC781KQ
  Active Insurance current
• Liberty Plumbing LLC
  Plumbing · Buckley · #LIBERPL792RZ
  Active Insurance current
• Liberty Tradesmen
  Plumbing · Lake Stevens · #LIBERT*746N5
  Active Insurance current
• Lighthouse Plumbing
  Plumbing · Carnation · #LIGHTP*762K2
  Active Insurance current
• Lilac City Plumbing LLC
  Plumbing · Spokane Valley · #LILACCP773CL
  Active Insurance current
• Lilyna Consulting LLC
  Plumbing · Redmond · #LILYNCL746OZ
  Active Insurance current
• Lindberg Contracting LLC
  Plumbing · Davenport · #LINDBCL767NK
  Active Insurance current
• Lindsay-Johnson Mechanical
  Plumbing · Auburn · #LINDSM*781JH
  Active Insurance current
• Liquid Plumber
  Plumbing · Seattle · #LIQUIP*751LF
  Active Insurance current
• Little Guy Plmbng & Mech LLC
  Plumbing · Seattle · #LITTLGP774OE
  Active Insurance current
• Livermore & Son LLC
  Plumbing · Deming · #LIVERSL777JM
  Active Insurance current
• Living Water Plumbing INC
  Plumbing · Boring · #LIVINWP765KS
  Active Insurance current
• Lm Plumbing LLC
  Plumbing · Tacoma · #LMPLUPL760JZ
  Active Insurance current
• Local Plumbing & Const INC
  Plumbing · Maple Valley · #LOCALPC791O7
  Active Insurance current
• Local Plumbing CO
  Plumbing · Sherwood · #LOCALPC780OG
  Active Insurance current
• Lockwood Contractors LLC
  Plumbing · La Center · #LOCKWCL782QN
  Active Insurance current
• Long Horn Plumbing LLC
  Plumbing · Bremerton · #LONGHHP754NR
  Active Insurance current
• Lovett INC
  Plumbing · Portland · #LOVETI*782PL
  Active Insurance current
• Lowe LLC
  Plumbing · Mount Vernon · #LOWELL*780O7
  Active Insurance current
• Lowe's Home Centers LLC
  Plumbing · Mooresville · #LOWESHC762MH
  Active Insurance current
• Lumank INC
  Plumbing · Redmond · #LUMANI*755O5
  Active Insurance current
• Luna Moon Plumbing LLC
  Plumbing · Everett · #LUNAMMP784CW
  Active Insurance current
• Lynch Plumbing LLC
  Plumbing · Bremerton · #LYNCHPL743JW
  Active Insurance current
• Lynden Sheet Metal INC
  Plumbing · Lynden · #LYNDESM798MG
  Active Insurance current
• Lyons Plumbing & Const LLC
  Plumbing · Puyallup · #LYONSPC740CB
  Active Insurance current
• Lyons Plumbing & Const LLC
  Plumbing · Puyallup · #LYONSPC76887
  Active Insurance current
• M & M Plumbing
  Plumbing · Lacey · #MMPLUMP786LG
  Active Insurance current
• M P Plumbing CO
  Plumbing · Clackamas · #MPPLUPP797PG
  Active Insurance current
• M&m Pumping LLC
  Plumbing, Landscaping · Richland · #MMPUMPL798O9
  Active Insurance current
• Macdonald-Miller Fac Solns LLC
  Plumbing · Seattle · #MACDOFS798P9
  Active Insurance current
• Machias Elect & Power Gen LLC
  Plumbing · Snohomish · #MACHIEP747LD
  Active Insurance current
• Mackin & Little INC
  Plumbing · Spokane · #MACKILI772KE
  Active Insurance current
• Mad Pipers Plumbing LLC
  Plumbing · Snohomish · #MADPIPP781QZ
  Active Insurance expiring soon
• Madden Mechanical INC
  Plumbing · Buckley · #MADDEMI780BQ
  Active Insurance current
• Madrona Beach Plumbing LLC
  Plumbing · Stanwood · #MADROBP792MN
  Active Insurance current
• Maestro Plumbing LLC
  Plumbing · Auburn · #MAESTPL790NQ
  Active Insurance current
• Magic Flow Plumbing LLC
  Plumbing · Lake Stevens · #MAGICFP767J4
  Active Insurance current
• Mainline Drain Service LLC
  Plumbing · Federal Way · #MAINLDS780K3
  Active Insurance current
• Mainstream Electric LLC
  Plumbing · City of Spokane Vall · #MAINSEL783C8
  Active Insurance current
• Maltos Plumbing LLC
  Plumbing · Yakima · #MALTOPL740DS
  Active Insurance current
• Manzco Plumbing
  Plumbing · Vancouver · #MANZCP*798OA
  Active Insurance current
• Manzhura and Company LLC
  Plumbing · Brush Prairie · #MANZHCL765QG
  Active Insurance current
• Manzhura Plumbing INC
  Plumbing · Vancouver · #MANZHPI785O1
  Active Insurance current
• Maple Valley Plbg & Piwrks INC
  Plumbing · Ravensdale · #MAPLEVP788K5
  Active Insurance current
• Marathon Plumbing LLC
  Plumbing · Fall City · #MARATPL793O7
  Active Insurance current
• Mario's Plumbing LLC
  Plumbing · Belfair · #MARIOPL780K6
  Active Insurance current
• Mark the Plumber
  Plumbing · Snohomish · #MARKPP*783CN
  Active Insurance current
• Mark's Plumbing LLC
  Plumbing · Omak · #MARKSPL780P8
  Active Insurance current
• Marks Plumbing Service LLC
  Plumbing · Seattle · #MARKSPS763NB
  Active Insurance current
• Marlin Plumbing LLC
  Plumbing · Mountlake Terrace · #MARLIPL750QF
  Active Insurance expiring soon
• Marr's Heating & a/C INC
  Plumbing · Bellingham · #MARRSHC742JW
  Active Insurance current
• Marshall's Plumbing INC
  Plumbing · Spokane · #MARSHPI755K9
  Active Insurance current
• Martha's Plumbing LLC
  Plumbing · Seattle · #MARTHPL773L3
  Active Insurance current
• Marysville Plumbing INC
  Plumbing · Arlington · #MARYSPI780KC
  Active Insurance current
• Mashtare Plumbing
  Plumbing · Nine Mile Falls · #MASHTP*782K6
  Active Insurance current
• Maspro Service LLC
  Plumbing · Woodland · #MASPRSL796OB
  Active Insurance current
• Mast Plumbing & Mechanical LLC
  Plumbing · Buckley · #MASTPPM741OB
  Active Insurance current
• Masterful Plumbing LLC
  Plumbing · Kent · #MASTEPL764MW
  Active Insurance current
• Masterpiece Plumbing LLC
  Plumbing · Puyallup · #MASTEPL753BM
  Active Insurance current
• Masterpro Installs Corp
  Plumbing · San Leandro · #MASTEIC740N7
  Active Insurance current
• Mather & Sons Pump Service INC
  Plumbing, Landscaping · Vancouver · #MATHESP781KD
  Active Insurance current
• Matt Groesse Plumbing LLC
  Plumbing · Tacoma · #MATTGGP787NA
  Active Insurance current
• Matt's Plumbing & Mech LLC
  Plumbing · Seattle · #MATTSPM780OL
  Active Insurance current
• Matt's Plumbing LLC
  Plumbing · Cle Elum · #MATTSPL791O4
  Active Insurance current
• Matts Residential Plumbing LLC
  Plumbing · Richland · #MATTSRP797NP
  Active Insurance expiring soon
• Mauldin's Well Service INC
  Plumbing, Landscaping · Friday Harbor · #MAULDWS785DD
  Active Insurance expiring soon
• Maven Mechanical LLC
  Plumbing · La Center · #MAVENML781K5
  Active Insurance current

Last checked against state records on Oct 6, 2026. How we get this data.