Plumbing contractors in Olympia, WA

37 active plumbing contractors are registered with Washington L&I at a Olympia, WA address. 75 registrations are on record in all, including expired and other statuses.

By the numbers

Active registrations: 37
Registrations on record, all statuses: 75
Registered in the last 12 months: 2
Median years registered, active: 4
Suspension on record: 3
Complaint records matched: 3

Counts of L&I contractor registration records, computed October 8, 2026. Active means the state's record shows ACTIVE status. Years are counted from each registration's effective date.
Suspension on record: registrations with SUSPENDED status, plus active or re-licensed registrations that carry a suspension date.
Complaint records matched: contractors with at least one Attorney General consumer complaint record under the same business name and city. A complaint record is not a finding of wrongdoing.
Sources: L&I Contractor License Data - General andAttorney General Consumer Complaints. Seehow directory numbers are computed.

Longest registered

BLUE MOUNTAIN MECH INCRegistered since July 1, 2021
Bathroom LLC, TheRegistered since August 3, 2021
Barbo's Plumbing LLCRegistered since August 5, 2021
ON THE LEVEL PLUMBING INCRegistered since August 18, 2021
RIDGECREEK PLUMBING LLCRegistered since August 24, 2021

Recently registered

OLD SKOOL PLUMBING SERVICESRegistered on June 5, 2026
BLUE MOUNTAIN MECH, LLCRegistered on October 31, 2025
TRIPLE T PLUMBING LLCRegistered on August 28, 2025
GULL HARBOR PLUMBINGRegistered on July 10, 2025
MOUNTAIN PEAK PLMBNG SRVCS LLCRegistered on March 25, 2025

Active registrations, by the effective date on the state's record.

All 75 registrations on record

Businesses by registered name and license number. Show only the 37 active registrations.

A+ SERVICESACTIVE
License ASERV**771C2 · Registered 3 years
B P PLUMBING & MECHANICALACTIVE
License BPPLUPP790OA · Registered 5 years
BLACK HILLS INCACTIVE
License BLACKHI763D8 · Registered 2 years
BLACK HILLS INCACTIVE
License BLACKHI784CW · Registered 4 years
BLUE MOUNTAIN MECH INCACTIVE
License BLUEMMM791MA · Registered 5 years
BLUE MOUNTAIN MECH, LLCACTIVE
License BLUEMMM754RE · Registered less than 1 year
BOYD'S PLUMBINGACTIVE
License BOYDSP*796QN · Registered 4 years
BROOKS PLUMBING COACTIVE
License BROOKPC793NR · Registered 4 years
Barbo's Plumbing LLCACTIVE
License BARBOPL795MP · Registered 5 years
Bathroom LLC, TheACTIVE
License BATHRL*797MP · Registered 5 years
Black Lake Plumbing LLCACTIVE
License BLACKLP791R3 · Registered 4 years
EVANS SEPTIC SERVICE LLCACTIVE
License EVANSSS761MH · Registered 2 years
GULL HARBOR PLUMBINGACTIVE
License GULLHHP756MS · Registered 1 year
HARBOR PLUMBINGACTIVE
License HARBOP*786NP · Registered 4 years
HOPE'S PLUMBING AND MECH. LLCACTIVE
License HOPESPM792QN · Registered 4 years
JOHN'S PLUMBING & PUMPS INCACTIVE
License JOHNSPP764PU · Registered 1 year
MOUNTAIN PEAK PLMBNG SRVCS LLCACTIVE
License MOUNTPP752D4 · Registered 1 year
MYKOL PUMP DRILLING INCACTIVE
License MYKOLPD788DC · Registered 4 years
McNeese's Plumbing IncACTIVE
License MCNEEPI792P9 · Registered 4 years
OLD SKOOL PLUMBING SERVICESACTIVE
License OLDSKSP741LE · Registered less than 1 year
OLYMPIC PLUMBING TECHNOLGY LLCACTIVE
License OLYMPPT799NS · Registered 5 years
ON THE LEVEL PLUMBING INCACTIVE
License LEVELLP791NR · Registered 5 years
PARAMOUNT PLUMBING LLCACTIVE
License PARAMPL778B6 · Registered 3 years
PLATYPUS PLUMBING LLCACTIVE
License PLATYPL786DC · Registered 4 years
PLUMB LINE PLBG & RMDLING INCACTIVE
License PLUMBLP775C8 · Registered 3 years
RIDGECREEK PLUMBING LLCACTIVE
License RIDGEPL794OB · Registered 5 years
SANITARY PLUMBING & HEATNG INCACTIVE
License SANITPH779JR · Registered 3 years
TONY CAMP PLUMBING LLCACTIVE
License TONYCCP796MG · Registered 5 years
TRIPLE T PLUMBING LLCACTIVE
License TRIPLTP754N8 · Registered 1 year
TROUT CREEK WATERWORKS LLCACTIVE
License TROUTCW763LE · Registered 2 years
TUMYA PLUMBING CONTRACTOR LLCACTIVE
License TUMYAPC799PD · Registered 4 years
Treat Plumbing LLCACTIVE
License TREATPL785NS · Registered 4 years
WELCO PLUMBINGACTIVE
License WELCOP*791PD · Registered 5 years
WEST COAST MECH SLTNS LLCACTIVE
License WESTCCM782QN · Registered 2 years
WEST COAST PLMBG PMP/FILTR LLCACTIVE
License WESTCCP774NS · Registered 3 years
WHITE KNIGHT PLUMBINGACTIVE
License WHITEKP798P9 · Registered 4 years
YELM PLUMBING & PUMPS LLCACTIVE
License YELMPPP778C2 · Registered 3 years
A PLUMBING DOCTOR INCRE-LICENSED
License APLUMDI820RL · First registered 2018
ABRAHAM'S PLUMBING SERVS INCEXPIRED
License ABRAHPS767LJ · First registered 2024
ADVANCED BACKFLW&CROSSCNTN LLCEXPIRED
License ADVANBL760CG · First registered 2024
ADVANCED BACKFLW&CROSSCNTN LLCRE-LICENSED
License ADVANBL800JS · First registered 2020
AMERICAN PLUMBING CONTRS INCSUSPENDED
License AMERIPC779QA · First registered 2023
APD PLUMBING & MECHANICAL INCSUSPENDED
License APDPLPM789QP · First registered 2022
B P Plumbing and MechanicalRE-LICENSED
License BPPLUPP919OB · First registered 2009
B&B PLUMBING LLCEXPIRED
License BBPLUPL851N5 · First registered 2015
BLACK DIAMOND PLUMBING LLCEXPIRED
License BLACKDP808NC · First registered 2020
BLACK HILLS MECHANICALEXPIRED
License BLACKHM790MG · First registered 2021
Barbo's Plumbing LLCRE-LICENSED
License BARBOPL863BG · First registered 2014
CLEARWATER PLUMBING INCEXPIRED
License CLEARPI072K9 · First registered 1993
Certified Bckflw Assy Tstg LLCEXPIRED
License CERTIBA905P9 · First registered 2010