How many plumbers are registered in Seattle, WA?

104 plumbers with a Seattle business address are registered with Washington's Department of Labor & Industries, as of October 16, 2026. Many more from nearby towns also work in Seattle.

How do I check a plumber's registration in Washington?

Ask for their registration number and look it up on L&I's Verify a Contractor or on checkthepro.com/lookup. An active registration means they have the bond and liability insurance the state requires.

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Plumbers in Seattle, WA

104 plumbers with a Seattle business address are registered with Washington L&I (King County). Registration means the state holds a bond and proof of liability insurance for each of them. Check any pro below before you hire.

Updated October 16, 2026 from the state register

104registered with the state

1pro gets your request

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Before you hire

1Registration active, same name as the estimate. Check it.

2Certified plumber (or supervised trainee). Water heaters usually need a permit.

3Written estimate first. No big cash deposits.

104 registered plumbers

L&I register, Oct 16, 2026. A–Z. Listing isn't a recommendation.

AAA FIRE PROTECTION INCAAAFIFP777PZ · Plumbing Contractor · renews Sep 2027

AAA WATER HEATERSAAAWAWH741J7 · Plumbing Contractor · renews Apr 2028

ACTION PLUMBINGACTIOP*784BO · Plumbing Contractor · renews Mar 2028

ADVANCED MECHANICAL & PLUMBINGADVANMP795R3 · Plumbing Contractor · renews Nov 26

ANTHONY'S PLUMBING COMPANYANTHOPC791NR · Plumbing Contractor · renews Sep 2027

AQUATECHS WATER HEATERAQUATWH755RN · Plumbing Contractor · renews Dec 2027

AURORA PLUMBINGAURORP*798NZ · Plumbing Contractor · renews Aug 2027

BEAGLE SERVICES INC.BEAGLSI781NB · Plumbing Contractor · renews Jul 2028

BEE'S PLBG, HTG & SWR CO LLCBEESPPH75127 · Plumbing Contractor · renews May 2027

BEN'S PLUMBINGBENSPP*762OR · Plumbing Contractor · renews Sep 2028

BEST PLUMBING GROUP LLCBESTPPG797MF · Plumbing Contractor · renews Feb 2028

BOGMAN COMPANY LLCBOGMACL790OM · Plumbing Contractor · renews Sep 2027

Show all 104

BPG PLUMBS LLCBPGPLPL742B9 · Plumbing Contractor · renews Feb 2028

BRENNAN HEATING & A/C LLCBRENNHC795OO · Plumbing Contractor · renews Sep 2027

Button Plumbing & Heating LLCBUTTOPH796ON · Plumbing Contractor · renews Sep 2027

CASCADE CRAFT PLUMBING LLCCASCACP741OD · Plumbing Contractor · renews Sep 2028

CLEARVIEW MECHANICAL INCCLEARMI783LP · Plumbing Contractor · renews Jun 2028

COLLIER PLUMBER INCCOLLIPI792MO · Plumbing Contractor · renews Aug 2027

COLUMBIA FIRE LLCCOLUMFL755RR · Plumbing Contractor · renews Dec 2027

CONVEY PLUMBINGCONVEP*793OO · Plumbing Contractor · renews Nov 2027

COOK'S PLUMBING LLCCOOKSPL781N6 · Plumbing Contractor · renews Oct 2028

COSTCO WHOLESALE CORPORATIONCOSTCWC770K6 · Plumbing Contractor · renews Jun 2027

CRESCENT BUILDSCRESCB*763JJ · Plumbing Contractor · renews Apr 2028

Centerline Plumbing LLCCENTEPL780DS · Plumbing Contractor · renews Mar 2028

Craftsman Plumbing LLCCRAFTPL798P9 · Plumbing Contractor · renews Oct 2027

D HENRY INCDHENRHI775C2 · Plumbing Contractor · renews Mar 2027

DANDELION PLUMBING LLCDANDEPL757NR · Plumbing Contractor · renews Aug 2027

DELTA PLUMBING LLCDELTAPL755M5 · Plumbing Contractor · renews Jul 2027

Dixon Backflow Testing LLCDIXONBT751RQ · Plumbing Contractor · renews Dec 2027

E&B PLUMBING PROSEBPLUPP747CS · Plumbing Contractor · renews Feb 2028

ECONOMYWISE PLUMBING LLCECONOPL777DF · Plumbing Contractor · renews Mar 2027

ELITE PLUMBING AND MECH LLCELITEPM796Q2 · Plumbing Contractor · renews Nov 2027

EMERALD CITY PLBG & SEWER LLCEMERACP782DC · Plumbing Contractor · renews Apr 2028

EXCELL PLUMBING INCEXCELPI791NL · Plumbing Contractor · renews Sep 2027

FIL-AM PLUMBINGFILAMP*791NQ · Plumbing Contractor · renews Nov 2027

GREEN CTY PLUMBING & SEWER LLCGREENCP766RZ · Plumbing Contractor · renews Dec 9

GREENWOOD HTNG & HOME SERVICESGREENHH7716M · Plumbing Contractor · renews Sep 2027

GREENWOOD TRUE VALUE HARDWAREGREENTV745CF · Plumbing Contractor · renews Apr 2028

GROUNDWORKSGROUN**756KN · Plumbing Contractor · renews May 2027

Green Planet Plbg & Swr LLCGREENPP791R3 · Plumbing Contractor · renews Feb 2028

HD PARTNERS LLCHDPARPL766N7 · Plumbing Contractor · renews Aug 2028

HO'S PLUMBING COHOSPLPC782BL · Plumbing Contractor · renews Jan 2028

HOMESERVICE PLUMBERS LLCHOMESPL773KW · Plumbing Contractor · renews May 2027

Hans' Plmbg & Drain Clng LLCHANSPPD795ML · Plumbing Contractor · renews Sep 2027

INSTANT ACCURATE PLUMBING LLCINSTAAP790QW · Plumbing Contractor · renews Nov 2027

Integrity Energy SystemsINTEGES771L8 · Plumbing Contractor · renews Jul 2028

J ALDEN PLUMBINGJALDEAP762DG · Plumbing Contractor · renews Mar 2028

JAFCO COMPANY LLCJAFCOCL797O2 · Plumbing Contractor · renews Sep 2027

JAKE THE PLUMBERJAKEPP*781BL · Plumbing Contractor · renews Jan 2028

JGM PLUMBING & MECH SERVS LLCJGMPLPM779LT · Plumbing Contractor · renews Jun 2027

JS PLUMBING INCJSPLUPI764NA · Plumbing Contractor · renews Aug 2028

JT PLUMBING LLCJTPLUPL796O8 · Plumbing Contractor · renews Nov 2027

KNOCKOUT PLUMBING & MECH LLCKNOCKPM743K9 · Plumbing Contractor · renews Jun 2028

KNOCKOUT PLUMBING & MECH LLCKNOCKPM782DB · Plumbing Contractor · renews Mar 2028

LAKESIDE PLUMBING & HTG INCLAKESPH797OZ · Plumbing Contractor · renews Aug 2027

LEVEL OF COMFORT LLCLEVELCL780JR · Plumbing Contractor · renews Apr 2028

LIQUID PLUMBERLIQUIP*751LF · Plumbing Contractor · renews Jun 2027

LITTLE GUY PLMBNG & MECH LLCLITTLGP774OE · Plumbing Contractor · renews Sep 2027

MACDONALD-MILLER FAC SOLNS LLCMACDOFS798P9 · Plumbing Contractor · renews Oct 2027

MARKS PLUMBING SERVICE LLCMARKSPS763NB · Plumbing Contractor · renews Aug 2028

MARTHA'S PLUMBING LLCMARTHPL773L3 · Plumbing Contractor · renews Jun 2027

MATT'S PLUMBING & MECH LLCMATTSPM780OL · Plumbing Contractor · renews Sep 2028

MCKINSTRY CO LLCMCKINCL793NG · Plumbing Contractor · renews Sep 2027

MR SIMMONS PLUMBING CO INCMRSIMSP781CM · Plumbing Contractor · renews Jan 2028

Mega Mushroom LLCMEGAMML769DF · Plumbing Contractor · renews Feb 2028

NERO PLUMBINGNEROPP*742OQ · Plumbing Contractor · renews Sep 2028

NIC'S PLUMBING LLCNICSPPL742MN · Plumbing Contractor · renews Jul 2028

NPM PLUMBING & MECH INCNPMPLPM773JR · Plumbing Contractor · renews Sep 2027

O'BRIEN PLUMBINGOBRIEP*776L7 · Plumbing Contractor · renews Sep 2027

O'NEILL PLUMBING COONEILPC793ND · Plumbing Contractor · renews Jul 2027

OCEAN PARK MECHANICAL INCOCEANPM792NW · Plumbing Contractor · renews Aug 2027

ODYSSEY PLUMBINGODYSSP*772PO · Plumbing Contractor · renews Nov 2027

PACIFIC CUSTOM SEWER &DRAINAGEPACIFCS762RP · Plumbing Contractor · renews Dec 2026

PARADISO MECHANICALPARADM*789DH · Plumbing Contractor · renews Mar 2028

PARKER SERVICES INCPARKESI792OA · Plumbing Contractor · renews Sep 2027

PIONEER PLUMBING & HEATINGPIONEPH797NE · Plumbing Contractor · renews Aug 2027

PRECISION PIPE & WELD LLCPRECIPW747OQ · Plumbing Contractor · renews Sep 2028

PREMIER PLUMBING LLCPREMIPL795N4 · Plumbing Contractor · renews Nov 2027

Pinky's Plumbing LLCPINKYPL799MW · Plumbing Contractor · renews Oct 2027

QUALITY PLUMBINGQUALIP*795NU · Plumbing Contractor · renews Aug 2027

REBATH NORTH SEATTLEREBATNS748BH · Plumbing Contractor · renews Jan 2028

REDWORKS PLUMBING INCREDWOWP774RM · Plumbing Contractor · renews Dec 2027

ROUNDABOUT PLUMBING LLCROUNDPL742O9 · Plumbing Contractor · renews Oct 2028

RUSH PLUMBING INCRUSHPPI783D8 · Plumbing Contractor · renews May 2028

S T S REMODELING CORPSTSRETS780OR · Plumbing Contractor · renews Sep 2028

SAFE & SOUND PLUMBING LLCSAFESSP785LH · Plumbing Contractor · renews Jun 2028

SALISH PLUMBING CO PLLCSALISPC788OM · Plumbing Contractor · renews Sep 2028

SIMPLE PLUMBER LLCSIMPLPL797MF · Plumbing Contractor · renews Aug 2027

SIMPLE SOLUTIONS INCSIMPLSI776CZ · Plumbing Contractor · renews Feb 2027

SJS MECHANICAL SERVICES LLCSJSMEMS797MG · Plumbing Contractor · renews Jul 2027

SOREANO PLUMBING SERVICESOREAPS747MU · Plumbing Contractor · renews Jul 2028

SOUNDER PLUMBING LLCSOUNDPL776P6 · Plumbing Contractor · renews Nov 2027

STEVE GABLER PLUMBING LLCSTEVEGP760N2 · Plumbing Contractor · renews Aug 2028

STOIC PLUMBING LLCSTOICPL751BH · Plumbing Contractor · renews May 2027

TAJ PLUMBING LLCTAJPLPL796PD · Plumbing Contractor · renews Nov 2027

TAYLOR'D PLBG & GEN CONTRGTAYLOPG761OE · Plumbing Contractor · renews Sep 2028

THE PLUMBING GEEKPLUMBPG781LG · Plumbing Contractor · renews May 2028

UNCLE SHIETZ PLUMBING INCUNCLESP790PF · Plumbing Contractor · renews Feb 2028

WATERWATER**762J2 · Plumbing Contractor · renews Jun 2028

WATERTITE PLBG HTG & SEWER LLCWATERPH797NG · Plumbing Contractor · renews Sep 2027

WESNOR PLUMBING & HEATING LLCWESNOPH794RW · Plumbing Contractor · renews Dec 2027

WILLIAM LEONARD LLCWILLILL790P9 · Plumbing Contractor · renews Feb 2028

XPLORE PLUMBING LLCXPLORPL753CF · Plumbing Contractor · renews Feb 2027

ZESBRO PLUMBING LLCZESBRPL787BR · Plumbing Contractor · renews Mar 2028

Common problems

Water leaking through the ceiling?No hot water?Drain or toilet blocked?Sewage backing up?

Other pros in Seattle

Tree services HVAC companies Garage door companies Electricians Septic and side-sewer contractors

Common questions

How many plumbers are registered in Seattle?

104 with a Seattle business address, as of October 16, 2026. Many more from nearby towns also work in Seattle.

How do I check a plumber's registration?

Ask for their registration number and look it up on Check a contractor or L&I's Verify a Contractor. An active registration means they carry the bond and liability insurance the state requires.

Does Check the Pro send my request to several companies?

No. Each request goes to one registered local pro. If they can't take it, we find another.

Sources

Washington L&I contractor license data · The state's public register, refreshed here daily.

L&I Verify a Contractor · The official lookup, with bond, insurance and lawsuit details.

“Each applicant shall file with the department a surety bond issued by a surety insurer who meets the requirements of chapter 48.28 RCW in the sum of $30,000 if the applicant is a general contractor or $15,000 if the applicant is a specialty contractor.”

RCW 18.27.040

“the applicant shall furnish insurance or financial responsibility in the form of an assigned account in the amount of fifty thousand dollars for injury or damages to property, and one hundred thousand dollars for injury or damage including death to any one person, and two hundred thousand dollars for injury or damage including death to more than one person.”

RCW 18.27.050

“Contractor includes any person, firm, corporation, or other entity who or which, in the pursuit of an independent business undertakes to, or offers to undertake, or submits a bid to, construct, alter, repair, add to, subtract from, improve, develop, move, wreck, or demolish any building...”

RCW 18.27.010

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