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Nearby Plumber — nearbyplumber.com · License-verified plumbing directory · printed Oct 21, 2026
Washington › Cowlitz County
Cowlitz County, Washington

Plumbers in Cowlitz County, Washington.

33 license-verified plumbers are filed in Cowlitz County on L&I records. Every listing is checked against L&I contractor license records.

Updated October 6, 2026 · listings checked against L&I records October 21, 2026

Cowlitz County, at a glance
All Washington permit guides →
License-verified plumbers listed
33
Providers

Cowlitz County plumbers, verified first.

Each listing shows how it matched L&I records, with its license number and phone. Anything we could not match is labeled as such, never badged.

How listings are labeled
  • ✓ Tier 1 — License-matched
  • Tier 2 — Roster-matched
  • Tier 3 — Directory-sourced labeled “Unverified”
How we verify →
2
2 Guys Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Residential · 2GUYSGP786KB · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 274-3453 View profile
AM
Amg Plumbing Service LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · AMGPLPS745CF · Active — checked Oct 21, 2026

Filed in Cowlitz County

(559) 239-7140 View profile
AN
Anthony’s Plumbing ✓ L&I Verified
Plumbing Contractor — Journey Level · ANTHOP*759D7 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 454-2044 View profile
AT
Atlas Mechanical Inc. ✓ L&I Verified
Plumbing Contractor — Journey Level · ATLASMI784BQ · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 887-8054 View profile
AT
Atlas Plumbing Contractors ✓ L&I Verified
Plumbing Contractor — Journey Level · ATLASPC792MF · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 887-8054 View profile
BA
Bates Plumbing & Mech LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · BATESPM753CD · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 575-3333 View profile
BR
Brockmueller Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · BROCKPL788RW · Active — checked Oct 21, 2026

Filed in Cowlitz County

(206) 707-3843 View profile
CA
Cascade Electric & Plumbing ✓ L&I Verified
Plumbing Contractor — Journey Level · CASCAEP781BQ · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 425-0600 View profile
CA
Cascade Plumbing Service Co. ✓ L&I Verified
Plumbing Contractor — Journey Level · CASCAPS791RZ · Active — checked Oct 21, 2026

Filed in Cowlitz County

(503) 544-7454 View profile
CE
Cedar Creek Plumbing ✓ L&I Verified
Plumbing Contractor — Residential · CEDARCP788QA · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 263-4018 View profile
CO
Coastal Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · COASTPL764CE · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 949-3589 View profile
CO
Columbia Mechanical Inc. ✓ L&I Verified
Plumbing Contractor — Journey Level · COLUMMI760NA · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 225-1600 View profile
CO
Cor Tech Plumbing & Mech LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · CORTETP773B3 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 644-4571 View profile
DA
Dale McGhee&Sons Well DRL Inc. ✓ L&I Verified
Plumbing Contractor — Pump & Irrigation · DALEMMW797MB · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 423-8493 View profile
GR
Granite Plumbing Services LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · GRANIPS743DW · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 947-6338 View profile
HE
Hendrickson Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · HENDRPL780RZ · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 798-0268 View profile
IN
Independent Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · INDEPPL754NN · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 980-9176 View profile
JH
JH Kelly LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · JHKELHK793MK · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 423-5510 View profile
K2
K2A Excavating & Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · K2AEXEP779U8 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(564) 888-1089 View profile
MA
Maspro Service LLC ✓ L&I Verified
Plumbing Contractor — Residential · MASPRSL796OB · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 921-0288 View profile
NO
North Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Residential · NORTHPL772K5 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 869-1539 View profile
PA
Papa Troy Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Residential · PAPATTP765DJ · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 355-2042 View profile
PE
Peterson Pump Service LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · PETERPS766D7 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 977-0038 View profile
PI
Pipe Dream Plumbing ✓ L&I Verified
Plumbing Contractor — Residential · PIPEDDP791NG · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 274-9114 View profile
PL
Platinum Plumbing Inc. ✓ L&I Verified
Plumbing Contractor — Residential · PLATIPI759DK · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 355-7840 View profile
SE
Sessions Plumbing/Heating, Inc. ✓ L&I Verified
Plumbing Contractor — Journey Level · SESSIPI792MF · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 636-0070 View profile
TA
Tarkka Plumbing ✓ L&I Verified
Plumbing Contractor — Journey Level · TARKKP*763RT · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 953-3417 View profile
TH
Three Sons Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Residential · THREESP781C4 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 673-6833 View profile
TO
Toads Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · TOADSPL784R2 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 903-7167 View profile
VA
Vatten Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · VATTEPL779D8 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 984-7430 View profile
VE
Vetter Plumbing SVC. LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · VETTEPS770OF · Active — checked Oct 21, 2026

Filed in Cowlitz County

(503) 716-2680 View profile
WE
Wells and More LLC ✓ L&I Verified
Plumbing Contractor — Domestic Pump · WELLSML785KD · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 274-4329 View profile
WE
Western Edge Plumbing LLC ✓ L&I Verified
Plumbing Contractor — Journey Level · WESTEEP748B6 · Active — checked Oct 21, 2026

Filed in Cowlitz County

(360) 998-0659 View profile
GO
Golden Heart Plumbing LLC Unverified · directory-sourced
Plumbing Contractor — Residential · GOLDEHP770PC · suspended — checked Oct 21, 2026

Filed in Cowlitz County

(509) 218-7628 View profile

iOrganic order is verified-first then A–Z and is never sold; featured slots, when they exist, are labeled. Methodology

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Permits

Plumbing permits in Cowlitz County: who issues them.

Plumbing permit fees, forms and process

Plumbing permits and inspections in Washington come from the city or county building department with jurisdiction, under the Uniform Plumbing Code the state adopts for everyone. The work itself must be done by an L&I-licensed plumbing contractor employing certified plumbers (RCW 18.106.020), with one exception the statute spells out: a person may do plumbing work at their own residence, farm, place of business or other property they own (RCW 18.106.150).

Permit guides here are written per city, because that is who issues them.

All Washington permit guides

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