DouxProcess Directory

Ask for any business in the US.

NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

you asked:

Plumbers in Mount Vernon, WA

20 plumbers in Mount Vernon, WA; 201 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. A1 Plumbing LLC

    ActivePlumbing contractor, residential

    Mount Vernon, WA

    Proof for A1 Plumbing LLC
    License
    L&I A1PLUPL752O2
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, residential
    Expires
    Oct 6, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 708-9985
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  2. Absolute Plumbing

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Absolute Plumbing
    License
    L&I ABSOLP*799MB
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Jul 12, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 610-6141
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  3. All Time Plumbing & Htg LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for All Time Plumbing & Htg LLC
    License
    L&I ALLTITP759LT
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Aug 21, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 707-9958
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  4. Barker Drilling LLC

    ActiveElectrical contractor, domestic pump

    Mount Vernon, WA

    Proof for Barker Drilling LLC
    License
    L&I BARKEDL762KL
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Electrical contractor, domestic pump
    Expires
    Jun 29, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 422-5882
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  5. Booker's Plumbing LLC

    ActivePlumbing contractor, residential

    Mount Vernon, WA

    Proof for Booker's Plumbing LLC
    License
    L&I BOOKEPL796NQ
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, residential
    Expires
    Aug 28, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 610-8821
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  6. Ct Plumbing Solutions, LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Ct Plumbing Solutions, LLC
    License
    L&I CTPLUPS745PB
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Oct 2, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (425) 359-4641
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  7. Delk's Plumbing LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Delk's Plumbing LLC
    License
    L&I DELKSPL775BZ
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Jan 19, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 333-8874
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  8. Experience Plumbing LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Experience Plumbing LLC
    License
    L&I EXPERPL795PE
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Oct 18, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 982-1737
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  9. Frees Plumbing Service LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Frees Plumbing Service LLC
    License
    L&I FREESPS798OS
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Aug 31, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 899-8421
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  10. Hoover Cmrcl Refrigeration Inc

    ActiveConstruction contractor, general

    Mount Vernon, WA

    Proof for Hoover Cmrcl Refrigeration Inc
    License
    L&I HOOVECR896DN
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Construction contractor, general
    Expires
    Mar 15, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 445-2019
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  11. J & H Plumbing Services Inc

    ActivePlumbing contractor, residential

    Mount Vernon, WA

    Proof for J & H Plumbing Services Inc
    License
    L&I JHPLUHP772MF
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, residential
    Expires
    Jul 6, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 913-1474
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  12. Lowe LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Lowe LLC
    License
    L&I LOWELL*780O7
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Oct 4, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 770-1717
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  13. Mike's Repair

    ActiveConstruction contractor, general

    Mount Vernon, WA

    Proof for Mike's Repair
    License
    L&I MIKESR*794P6
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Construction contractor, general
    Expires
    Oct 27, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (208) 573-1702
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  14. Newton's Plumbing

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Newton's Plumbing
    License
    L&I NEWTOP*788B7
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Feb 7, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 726-3148
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  15. NW Custom Plumbing LLC

    ActivePlumbing contractor, residential

    Mount Vernon, WA

    Proof for NW Custom Plumbing LLC
    License
    L&I NWCUSCP791RM
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, residential
    Expires
    Jan 24, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (206) 660-7442
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  16. Plumbing Today Inc

    ActivePrivate motor carrier

    Mount Vernon, WA

    Proof for Plumbing Today Inc
    USDOT registration
    FMCSA 2000352
    Issuer
    FMCSA
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 848-6685
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → FMCSA record
  17. Rmi Plumbing LLC

    ActivePlumbing contractor, journey level

    Mount Vernon, WA

    Proof for Rmi Plumbing LLC
    License
    L&I RMIPLPL769BW
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, journey level
    Expires
    Jan 30, 2028
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 661-5519
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  18. Robert's Plbg/Hm Impr Svcs Inc

    ActivePlumbing contractor, residential

    Mount Vernon, WA

    Proof for Robert's Plbg/Hm Impr Svcs Inc
    License
    L&I ROBERPI773DF
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, residential
    Expires
    Mar 13, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (360) 428-5748
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  19. Z's Plumbing LLC

    ActivePlumbing contractor, residential

    Mount Vernon, WA

    Proof for Z's Plumbing LLC
    License
    L&I ZSPLUPL759O6
    Issuer
    Washington State L&I
    Status
    Active
    Class
    Plumbing contractor, residential
    Expires
    Sep 26, 2027
    Checked
    Oct 30, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (425) 374-9220
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record
  20. All Clear Plumbing LLC

    Not in the latest issuer filePlumbing contractor, residential

    Mount Vernon, WA

    Proof for All Clear Plumbing LLC
    License
    L&I ALLCLCP785RH
    Issuer
    Washington State L&I
    Status
    Not in the latest issuer file
    Class
    Plumbing contractor, residential
    Expires
    Dec 9, 2026
    Checked
    Oct 28, 2026
    Where
    Mount Vernon, WA · serves Washington
    Phone
    (564) 900-0509
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → Washington State L&I record

More cities in Washington

Free for people · nobody pays to rank. Run one of these businesses? Claim it free.

Checked facts from public license files · How ranking works