Plumbing contractors in Mount Vernon, WA

18 active plumbing contractors are registered with Washington L&I at a Mount Vernon, WA address. 36 registrations are on record in all, including expired and other statuses.

By the numbers

Active registrations: 18
Registrations on record, all statuses: 36
Registered in the last 12 months: 1
Median years registered, active: 3
Suspension on record: 3
Complaint records matched: 1

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

BOOKER'S PLUMBING LLCRegistered since August 24, 2021
FREES PLUMBING SERVICE LLCRegistered since August 31, 2021
EXPERIENCE PLUMBING LLCRegistered since October 18, 2021
NW Custom Plumbing LLCRegistered since January 24, 2022
NEWTON'S PLUMBINGRegistered since February 7, 2022

Recently registered

HOOVER CMRCL REFRIGERATION INCRegistered on September 17, 2026
A1 PLUMBING LLCRegistered on October 6, 2025
Z'S PLUMBING LLCRegistered on September 26, 2025
ALL TIME PLUMBING & HTG LLCRegistered on August 21, 2025
Barker Drilling LLCRegistered on June 27, 2024

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

All 36 registrations on record

Businesses by registered name and license number. Show only the 18 active registrations.

A1 PLUMBING LLCACTIVE
License A1PLUPL752O2 · Registered 1 year
ABSOLUTE PLUMBINGACTIVE
License ABSOLP*799MB · Registered 4 years
ALL CLEAR PLUMBING LLCACTIVE
License ALLCLCP785RH · Registered 3 years
ALL TIME PLUMBING & HTG LLCACTIVE
License ALLTITP759LT · Registered 1 year
BOOKER'S PLUMBING LLCACTIVE
License BOOKEPL796NQ · Registered 5 years
Barker Drilling LLCACTIVE
License BARKEDLA682L · Registered 2 years
DELK'S PLUMBING LLCACTIVE
License DELKSPL775BZ · Registered 3 years
EXPERIENCE PLUMBING LLCACTIVE
License EXPERPL795PE · Registered 4 years
FREES PLUMBING SERVICE LLCACTIVE
License FREESPS798OS · Registered 5 years
HOOVER CMRCL REFRIGERATION INCACTIVE
License HOOVECR742OP · Registered less than 1 year
J & H PLUMBING SERVICES INCACTIVE
License JHPLUHP772MF · Registered 3 years
LOWE LLCACTIVE
License LOWELL*780O7 · Registered 4 years
MIKE'S REPAIRACTIVE
License MIKESR*782KD · Registered 4 years
NEWTON'S PLUMBINGACTIVE
License NEWTOP*788B7 · Registered 4 years
NW Custom Plumbing LLCACTIVE
License NWCUSCP791RM · Registered 4 years
RMI PLUMBING LLCACTIVE
License RMIPLPL769BW · Registered 2 years
ROBERT'S PLBG/HM IMPR SVCS INCACTIVE
License ROBERPI773DF · Registered 3 years
Z'S PLUMBING LLCACTIVE
License ZSPLUPL759O6 · Registered 1 year
ABSOLUTE PLUMBINGRE-LICENSED
License ABSOLP*872OD · First registered 2013
BARKER DRILLINGEXPIRED
License BARKED*784CG · First registered 2022
BOOKER'S PLUMBING LLCRE-LICENSED
License BOOKEPL861BS · First registered 2014
CPI PLUMBING & HEATING INCEXPIRED
License CPIPLPH791NB · First registered 2021
CPI PLUMBING HEATING & CNG LLCEXPIRED
License CPIPLPH78041 · First registered 2022
DELK'S PLUMBING LLCEXPIRED
License DELKSPL906MZ · First registered 2010
DENALI PLUMBINGEXPIRED
License DENALP*933L7 · First registered 2007
DENALI PLUMBING LLCOUT OF BUSINESS
License DENALPL764CW · First registered 2024
DOCS PLUMBING LLCEXPIRED
License DOCSPPL792RC · First registered 2021
FLOW STATE SERVICESSUSPENDED
License FLOWSSS741K1 · First registered 2026
FREES PLUMBING SERVICE LLCRE-LICENSED
License FREESPS805LK · First registered 2020
J & H PLUMBING SERVICES INCEXPIRED
License JHPLUHP810MA · First registered 2019
NEWTON'S PLUMBINGEXPIRED
License NEWTOP*801BG · First registered 2020
NEWTON'S PLUMBING & HTG LLCRE-LICENSED
License NEWTOPH824BB · First registered 2018
NW Custom Plumbing LLCRE-LICENSED
License NWCUSCP861CS · First registered 2014
RMI PLUMBING LLCEXPIRED
License RMIPLPL813L7 · First registered 2019
THE GENERAL PLBG & SRVC CO LLCEXPIRED
License GENERPS893B8 · First registered 2011
TRADITIONS PLUMBING LLCSUSPENDED
License TRADIPL781DW · First registered 2023