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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 permits, not reviews, ads, or a workmanship guarantee.

Bellevue permit records through 2026-08-28, verified against the Washington State Department of Labor & Industries licensing records, snapshot dated 2026-08-16. Ranking reflects license standing and permit history, not a workmanship guarantee. This week's Bellevue permit activity.

Which plumbing contractor has pulled the most plumbing permits in Bellevue?

American Mechanical Corp has pulled the most plumbing permits in Bellevue of any firm holding the matching L&I class: 944 permits, most recently in 2026. It has held L&I license AMERIMC796MG for 5 years.

That count includes only permits 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 permits does not rank here. Permits are counted per license number, and a firm holding several licenses is counted on its busiest one. Bellevue records run through 2026-08-28.

See American Mechanical Corp's license and permit record →
Most plumbing permits in Bellevue, last 12 months of records, among licensed plumbing contractors
RankFirmLicenseRelevant permitsMost recent
1American Mechanical CorpL&I AMERIMC796MG9442026-08-03
2Proplumb LLCL&I PROPLL*795OB2852026-02-05
3Frost PlumbingL&I FROSTP*796RM2332026-06-16
4Fischer Plumbing Co Inc, TheL&I FISCHPC792OS2282026-07-31
5Best Plumbing Group LLCL&I BESTPPG797MF2012026-08-06
6Jd Plumbing/fire Protec IncL&I JDPLUPP797OO1972026-01-13
7State Mechanical CompanyL&I STATEMC141C71722025-11-04
8Skyway Plumbing IncL&I SKYWAPI797RZ1662026-06-11
9Protocol Plumbing & SewerL&I PROTOPS794PG1542026-08-06
10Gs Mechanical LLCL&I GSMECML795RW1502026-07-31
11Pacific Northwest PlumbingL&I PACIFNP786OT1432023-10-12
12Fox Plumbing & HeatingL&I FOXPLPHA644R1382022-07-31
13Mr Rooter PlumbingL&I MRROORP781NC1272024-08-23
14Mr. Rooter PlumbingL&I MRROORP742MP1272024-08-23
15Moss Bay Plumbing LtdL&I MOSSBBP790MG1142026-03-03
16Benla Water Heaters IncL&I BENLAWH780JH1132026-05-05
17Service Plumbing & Heating IncL&I SERVIPH797NR1102026-06-12
18Rudy's Plumbing IncL&I RUDYSPI786DM1082026-02-25
19South West Plbg & Wtrhtrs LLCL&I SOUTHWP798OW1062026-05-05
20Plumbing Works IncL&I PLUMBWI796OA1032026-07-08

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This page ranks all of Bellevue. Enter your address and we'll narrow it to plumbing contractors who have pulled permits 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 permit history

  1. American Mechanical Corp

    L&I AMERIMC796MG

    Burien, WA

    5 yrs licensed944 relevant permits1,008 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  2. Proplumb LLC

    L&I PROPLL*795OB

    Clairemore, OK

    4 yrs licensed285 relevant permits294 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  3. Frost Plumbing

    L&I FROSTP*796RM

    Snohomish, WA

    4 yrs licensed233 relevant permits463 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  4. Fischer Plumbing Co Inc, The

    L&I FISCHPC792OS

    Mountlake Terrace, WA

    4 yrs licensed228 relevant permits386 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  5. Best Plumbing Group LLC

    L&I BESTPPG797MF

    Seattle, WA

    4 yrs licensed201 relevant permits359 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  6. Jd Plumbing/fire Protec Inc

    L&I JDPLUPP797OO

    Woodinville, WA

    4 yrs licensed197 relevant permits269 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  7. State Mechanical Company

    L&I STATEMC141C7

    Kent, WA

    40 yrs licensed172 relevant permits195 total permitsLast permit 2025

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  8. Skyway Plumbing Inc

    L&I SKYWAPI797RZ

    Renton, WA

    4 yrs licensed166 relevant permits193 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  9. Protocol Plumbing & Sewer

    L&I PROTOPS794PG

    Marysville, WA

    4 yrs licensed154 relevant permits204 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review

    View license, permit history & disciplinary records →

  10. Gs Mechanical LLC

    L&I GSMECML795RW

    Redmond, WA

    4 yrs licensed150 relevant permits164 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  11. Pacific Northwest Plumbing

    L&I PACIFNP786OT

    Auburn, WA

    3 yrs licensed143 relevant permits154 total permitsLast permit 2023

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  12. Fox Plumbing & Heating

    L&I FOXPLPHA644R

    Woodinville, WA

    2 yrs licensed138 relevant permits229 total permitsLast permit 2022

    Permit types: Plumbing No Plan Review

    View license, permit history & disciplinary records →

  13. Mr Rooter Plumbing

    L&I MRROORP781NC

    Pasco, WA

    4 yrs licensed127 relevant permits248 total permitsLast permit 2024

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  14. Mr. Rooter Plumbing

    L&I MRROORP742MP

    Gladstone, OR

    0 yrs licensed127 relevant permits248 total permitsLast permit 2024

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  15. Moss Bay Plumbing Ltd

    L&I MOSSBBP790MG

    Redmond, WA

    4 yrs licensed114 relevant permits117 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  16. Benla Water Heaters Inc

    L&I BENLAWH780JH

    Tukwila, WA

    4 yrs licensed113 relevant permits115 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review

    View license, permit history & disciplinary records →

  17. Service Plumbing & Heating Inc

    L&I SERVIPH797NR

    Lynnwood, WA

    4 yrs licensed110 relevant permits132 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  18. Rudy's Plumbing Inc

    L&I RUDYSPI786DM

    Issaquah, WA

    4 yrs licensed108 relevant permits143 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit history & disciplinary records →

  19. South West Plbg & Wtrhtrs LLC

    L&I SOUTHWP798OW

    Renton, WA

    4 yrs licensed106 relevant permits382 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review

    View license, permit history & disciplinary records →

  20. Plumbing Works Inc

    L&I PLUMBWI796OA

    Woodinville, WA

    5 yrs licensed103 relevant permits112 total permitsLast permit 2026

    Permit types: Plumbing No Plan Review, Plumbing Plan Review

    View license, permit 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 building permit in this city's records. They are ranked by the number of relevant permits, then by how recently the firm worked, then by how long the firm has been licensed. This reflects license standing and real permit history - 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 permit type and the license class both match this trade.

Frequently asked questions

Which plumbing contractor has pulled the most plumbing permits in Bellevue?
American Mechanical Corp has pulled the most plumbing permits in Bellevue of any firm holding the matching L&I class: 944 permits, most recently in 2026. It has held L&I license AMERIMC796MG for 5 years. That count includes only permits 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 permits does not rank here. Permits are counted per license number, and a firm holding several licenses is counted on its busiest one. Bellevue records run through 2026-08-28.
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 building permit in this city's records. They are ranked by the number of relevant permits, then by how recently the firm worked, then by how long the firm has been licensed. This reflects license standing and real permit history - 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 building-permit history - 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 permit records through 2026-08-28, 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 permits 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.