Plumbing contractors in Kingston, WA
7 active plumbing contractors are registered with Washington L&I at a Kingston, WA address. 14 registrations are on record in all, including expired and other statuses.
By the numbers
- Active registrations
- 7
- Registrations on record, all statuses
- 14
- Registered in the last 12 months
- 2
- Median years registered, active
- 2
- Suspension on record
- 0
- Complaint records matched
- 0
- 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
- CRABTREE WELL DRILLING LLCRegistered since August 25, 2021
- AARON'S PLUMBING LLCRegistered since August 27, 2021
- SUPREME PLUMBING COMPANY, LLCRegistered since January 11, 2022
- BACKFLOW ASSEMBLY SLTNS INCRegistered since May 24, 2024
- CASCADIA MECHANICALRegistered since November 14, 2024
Recently registered
- PIPECRAFT LLCRegistered on February 4, 2026
- CLEAN WATER SEATTLE LLCRegistered on December 12, 2025
- CASCADIA MECHANICALRegistered on November 14, 2024
- BACKFLOW ASSEMBLY SLTNS INCRegistered on May 24, 2024
- SUPREME PLUMBING COMPANY, LLCRegistered on January 11, 2022
Active registrations, by the effective date on the state's record.
All 14 registrations on record
Businesses by registered name and license number. Show only the 7 active registrations.
- AARON'S PLUMBING LLCACTIVE
License AARONPL797NF · Registered 5 years
License BACKFAS760K4 · Registered 2 years
- CASCADIA MECHANICALACTIVE
License CASCAM*767QM · Registered 1 year
- CLEAN WATER SEATTLE LLCACTIVE
License CLEANWS754RB · Registered less than 1 year
License CRABTWD786LS · Registered 5 years
- PIPECRAFT LLCACTIVE
License PIPECL*741C5 · Registered less than 1 year
License SUPREPC783BJ · Registered 4 years
- AARON'S PLUMBING LLCRE-LICENSED
License AARONPL955Q3 · First registered 2005
License AFFORPN792RG · First registered 2021
- Affordable Plumbing NWEXPIRED
License AFFORPN912RT · First registered 2009
- CRABTREE WELL DRILLING LLCEXPIRED
License CRABTWD7905R · First registered 2021
- MABBUTT PLUMBING LLCEXPIRED
License MABBUPL777LG · First registered 2023
- MABBUTT PLUMBING LLCEXPIRED
License MABBUPL932JB · First registered 2007
- SUPREME PLUMBING COMPANY LLCEXPIRED
License SUPREPC873KL · First registered 2013