TradeCheck

Licensed Plumbing Contractors in Kennewick

Every plumbing contractor on record with the Washington State Department of Labor & Industries in Kennewick County, Washington, with current license status computed August 17, 2026. Listed A to Z; use the filters to narrow it.

32licensed plumbing contractors
23active today
9expired
28.1%expiry rate

Of the 32 plumbing contractors licensed in Kennewick County, 9 are operating on an expired license, or 28.1%. That is worth checking before you sign anything: an expired license can invalidate your permit and complicate an insurance claim if the work goes wrong.

Looking to hire rather than to check someone? Filter the list below by name, or use the Active chip to hide anyone whose license has lapsed.

Licensees 1 to 32 of 32

32 listed
LicenseeLicense #ExpiresStatus
1 TOM PLUMBER1TOMPTP773O8October 11, 2027Active
ADVANCED PLUMBING & RMDL LLCADVANPR791OPOctober 1, 2027Active
APOLLO MECHANICAL CONTRACTORSAPOLLMC795NRAugust 13, 2027Active
B&T PLUMBING & MECHANICALBTPLUPM781QDNovember 26, 2026Suspended
BNB MECHANICAL LLCBNBMEML792MNJuly 29, 2027Active
C & M PLUMBINGCMPLUMP788BRFebruary 1, 2028Active
COFFEY REFRIGERATIONCOFFER*789DAMarch 7, 2027Active
COLUMBIA BASIN PLUMBING LLCCOLUMBP799MFAugust 20, 2027Active
COLUMBIA RIVER PLBG & MECH LLCCOLUMRP796PJOctober 13, 2027Active
DEPENDABLE PLBG/WTR CNDTNG INCDEPENPC795OPSeptember 1, 2027Active
GRANDPA'S WATER HTRS & FLTRTNGRANDWH791RFNovember 12, 2023Suspended
GTC CONSTRUCTION LLCGTCCOCL786M9August 1, 2026Expired
HARRIS PLUMBING LLCHARRIPL774OHSeptember 8, 2025Expired
IV RIVERS INCIVRIVRI766PNOctober 15, 2026Expiring soon
KING'S GATE PLUMBING INCKINGSGP790Q3November 22, 2025Expired
KOHLER PLUMBINGKOHLEP*790RHNovember 24, 2023Suspended
KOHLER PLUMBING LLCKOHLEPL780O3October 11, 2026Expiring soon
MC MECHANICAL LLCMCMECML775CFFebruary 6, 2025Expired
MC MECHANICAL LLCMCMECML775JDApril 4, 2027Suspended
MIKE'S PLUMBINGMIKESP*791RZNovember 30, 2023Expired
MIKE'S PLUMBING SERVICE, LLCMIKESPS784BQFebruary 7, 2028Active
MULLINS ENTERPRISES LLCMULLIEL784BQApril 25, 2028Active
PLUMB COUNTRYPLUMBC*793MBJuly 12, 2027Active
RIGGLE PLUMBING INCORPORATEDRIGGLPI795MKJuly 28, 2027Active
RT PLUMBING LLCRTPLUPL759M5August 4, 2027Active
SILVERLINE PLUMBING SERVICESSILVEPS793NRAugust 17, 2027Active
SOFT WATER SPECIALISTS LLCSOFTWWS763N2August 22, 2026Expiring soon
THREE RIVERS MECHANICAL INCTHREERM781BLFebruary 28, 2028Active
TRI-CITIES WATER STORE INCTRICIWS771REFebruary 8, 2028Active
TRI-CITY PLUMBING & MECH INCTRICIPM790NGSeptember 17, 2027Active
TRITAN PLUMBING INCTRITAPI796OPJune 30, 2028Active
ZPLUMBERZ OF KENNEWICKZPLUMK*754NHAugust 8, 2027Active

Before you hire in Kennewick County

  1. Match the license number on this page to the name on the contract. Licenses belong to a person or a company, not to a crew.
  2. Confirm the record at L&I directly. This page mirrors their daily file, but they are the authority.
  3. Ask for a certificate of insurance separately. L&I licensing does not verify that a contractor carries liability coverage.
  4. Get the license number written into the written estimate.