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Best Plumbers in Bellevue, WA

A ranked shortlist of licensed plumbing contractors for someone hiring or vetting in Bellevue. Ranked on an active L&I class for the work and job-relevant Bellevue city building records, not reviews, ads, or a workmanship guarantee.

Bellevue city building records through 2026-10-20, verified against the Washington State Department of Labor & Industries licensing records, snapshot dated 2026-08-16. Ranking reflects license standing and city building records, not a workmanship guarantee. This week's Bellevue city building records.

Which plumbing contractor has done the most plumbing jobs in Bellevue?

American Mechanical Corp has done the most plumbing jobs in Bellevue of any firm holding the matching L&I class: 953 jobs, most recently in 2026. It has held L&I license AMERIMC796MG for 5 years.

That count includes only city building records whose type matches plumbing work in Bellevue's own records, and only firms that hold the matching L&I class as a primary or tied specialty, so a firm with a larger pile of unrelated jobs does not rank here. Jobs are counted per license number, and a firm holding several licenses is counted on its busiest one. Bellevue records run through 2026-10-20.

See American Mechanical Corp's license and job record →

Most plumbing jobs in Bellevue, all city records on file, among licensed plumbing contractors

  1. 1American Mechanical Corp

    L&I AMERIMC796MG · 953 jobs · 2026-09-28

  2. 2Proplumb LLC

    L&I PROPLL*795OB · 285 jobs · 2026-02-05

  3. 3Frost Plumbing

    L&I FROSTP*796RM · 233 jobs · 2026-06-16

  4. 4Fischer Plumbing Co Inc, The

    L&I FISCHPC792OS · 231 jobs · 2026-10-08

  5. 5Best Plumbing Group LLC

    L&I BESTPPG797MF · 202 jobs · 2026-08-06

  6. 6Jd Plumbing/fire Protec Inc

    L&I JDPLUPP797OO · 198 jobs · 2026-03-06

  7. 7State Mechanical Company

    L&I STATEMC141C7 · 174 jobs · 2025-12-15

  8. 8Skyway Plumbing Inc

    L&I SKYWAPI797RZ · 169 jobs · 2026-10-01

  9. 9Protocol Plumbing & Sewer

    L&I PROTOPS794PG · 154 jobs · 2026-08-06

  10. 10Gs Mechanical LLC

    L&I GSMECML795RW · 150 jobs · 2026-07-31

  11. 11Fox Plumbing & Heating

    L&I FOXPLPHA644R · 138 jobs · 2022-07-31

  12. 12Mr Rooter Plumbing

    L&I MRROORP781NC · 127 jobs · 2024-08-23

  13. 13Mr. Rooter Plumbing

    L&I MRROORP742MP · 127 jobs · 2024-08-23

  14. 14Moss Bay Plumbing Ltd

    L&I MOSSBBP790MG · 114 jobs · 2026-03-03

  15. 15Benla Water Heaters Inc

    L&I BENLAWH780JH · 113 jobs · 2026-05-05

  16. 16Service Plumbing & Heating Inc

    L&I SERVIPH797NR · 111 jobs · 2026-06-12

  17. 17Rudy's Plumbing Inc

    L&I RUDYSPI786DM · 108 jobs · 2026-02-25

  18. 18South West Plbg & Wtrhtrs LLC

    L&I SOUTHWP798OW · 106 jobs · 2026-05-05

  19. 19Plumbing Works Inc

    L&I PLUMBWI796OA · 103 jobs · 2026-07-08

  20. 20Bellevue Plumbing Inc

    L&I BELLEPI795ON · 100 jobs · 2026-10-13

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This list is city-wide for Bellevue. Enter your address and we will narrow it to plumbing contractors who have done jobs near you, check every license for standing and disciplinary history, and hand back a ranked shortlist you can call.

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Top 20 plumbing contractors by Bellevue job history

  1. American Mechanical Corp

    L&I AMERIMC796MG

    Burien, WA

    5 yrs licensed953 relevant jobs1,017 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  2. Proplumb LLC

    L&I PROPLL*795OB

    Clairemore, OK

    5 yrs licensed285 relevant jobs294 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  3. Frost Plumbing

    L&I FROSTP*796RM

    Snohomish, WA

    4 yrs licensed233 relevant jobs463 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  4. Fischer Plumbing Co Inc, The

    L&I FISCHPC792OS

    Mountlake Terrace, WA

    5 yrs licensed231 relevant jobs393 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  5. Best Plumbing Group LLC

    L&I BESTPPG797MF

    Seattle, WA

    4 yrs licensed202 relevant jobs363 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  6. Jd Plumbing/fire Protec Inc

    L&I JDPLUPP797OO

    Woodinville, WA

    4 yrs licensed198 relevant jobs312 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  7. State Mechanical Company

    L&I STATEMC141C7

    Kent, WA

    40 yrs licensed174 relevant jobs197 total jobsLast job 2025

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  8. Skyway Plumbing Inc

    L&I SKYWAPI797RZ

    Renton, WA

    4 yrs licensed169 relevant jobs197 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  9. Protocol Plumbing & Sewer

    L&I PROTOPS794PG

    Marysville, WA

    5 yrs licensed154 relevant jobs204 total jobsLast job 2026

    Job types: Plumbing No Plan Review

    View license, job history & disciplinary records →

  10. Gs Mechanical LLC

    L&I GSMECML795RW

    Redmond, WA

    4 yrs licensed150 relevant jobs165 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  11. Fox Plumbing & Heating

    L&I FOXPLPHA644R

    Woodinville, WA

    2 yrs licensed138 relevant jobs229 total jobsLast job 2022

    Job types: Plumbing No Plan Review

    View license, job history & disciplinary records →

  12. Mr Rooter Plumbing

    L&I MRROORP781NC

    Pasco, WA

    4 yrs licensed127 relevant jobs248 total jobsLast job 2024

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  13. Mr. Rooter Plumbing

    L&I MRROORP742MP

    Gladstone, OR

    0 yrs licensed127 relevant jobs248 total jobsLast job 2024

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  14. Moss Bay Plumbing Ltd

    L&I MOSSBBP790MG

    Redmond, WA

    4 yrs licensed114 relevant jobs117 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  15. Benla Water Heaters Inc

    L&I BENLAWH780JH

    Tukwila, WA

    4 yrs licensed113 relevant jobs115 total jobsLast job 2026

    Job types: Plumbing No Plan Review

    View license, job history & disciplinary records →

  16. Service Plumbing & Heating Inc

    L&I SERVIPH797NR

    Lynnwood, WA

    4 yrs licensed111 relevant jobs133 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  17. Rudy's Plumbing Inc

    L&I RUDYSPI786DM

    Issaquah, WA

    4 yrs licensed108 relevant jobs143 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  18. South West Plbg & Wtrhtrs LLC

    L&I SOUTHWP798OW

    Renton, WA

    5 yrs licensed106 relevant jobs388 total jobsLast job 2026

    Job types: Plumbing No Plan Review

    View license, job history & disciplinary records →

  19. Plumbing Works Inc

    L&I PLUMBWI796OA

    Woodinville, WA

    5 yrs licensed103 relevant jobs112 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

  20. Bellevue Plumbing Inc

    L&I BELLEPI795ON

    Bellevue, WA

    5 yrs licensed100 relevant jobs165 total jobsLast job 2026

    Job types: Plumbing No Plan Review, Plumbing Plan Review

    View license, job history & disciplinary records →

Most established Bellevue plumbing contractors

Longest-licensed firms based in Bellevue that hold the right L&I class, oldest license first.

How this ranking works

Organic results require an active L&I license, the correct class for the trade as the firm's primary or tied fit (a mechanical company that also holds an electrical license does not lead the electrician list), and at least one job-relevant city building record in this city. They are ranked by the number of relevant jobs, then by how recently the firm worked, then by how long the firm has been licensed. This reflects license standing and real city building records - it is not a workmanship guarantee. L&I does not publish a disciplinary file, so a clean record is not part of this ranking. Promoted entries, when present, are paid placements and are not scored by these rules.

Confidence: high. The job type and the license class both match this trade.

Frequently asked questions

Which plumbing contractor has done the most plumbing jobs in Bellevue?
American Mechanical Corp has done the most plumbing jobs in Bellevue of any firm holding the matching L&I class: 953 jobs, most recently in 2026. It has held L&I license AMERIMC796MG for 5 years. That count includes only city building records whose type matches plumbing work in Bellevue's own records, and only firms that hold the matching L&I class as a primary or tied specialty, so a firm with a larger pile of unrelated jobs does not rank here. Jobs are counted per license number, and a firm holding several licenses is counted on its busiest one. Bellevue records run through 2026-10-20.
How are the best plumbing contractors in Bellevue ranked?
Organic results require an active L&I license, the correct class for the trade as the firm's primary or tied fit (a mechanical company that also holds an electrical license does not lead the electrician list), and at least one job-relevant city building record in this city. They are ranked by the number of relevant jobs, then by how recently the firm worked, then by how long the firm has been licensed. This reflects license standing and real city building records - it is not a workmanship guarantee. L&I does not publish a disciplinary file, so a clean record is not part of this ranking. Promoted entries, when present, are paid placements and are not scored by these rules.
Is this ranking a guarantee of quality or workmanship?
No. It reflects Washington State Department of Labor & Industries license standing, longevity, and real city building records - not the quality of any individual job. Always verify a contractor on the official L&I Verify a Contractor and check references before hiring.
How current is this Bellevue contractor data?
Bellevue city building records through 2026-10-20, verified against the Washington State Department of Labor & Industries licensing records, snapshot dated 2026-08-16. The two datasets age separately: the board publishes licensing snapshots on its own cadence, and Bellevue publishes city building records on its own. This page regenerates daily.

Other trades in Bellevue

Firms licensed for plumbing and another trade are listed on the combo pages above, not as specialists here.