DouxProcess Directory

Ask for any business in the US.

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

you asked:

Plumbers in Monrovia, CA

29 plumbers in Monrovia, CA. Every listing checked against the issuer's record, in the published order.

  1. Gonvarg Plumbing Inc

    ActiveC36 Plumbing

    Rosemead, CA · WC exempt · 9 mi away

    Proof for Gonvarg Plumbing Inc
    License
    CSLB 1122413
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Jun 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Rosemead, CA · serves California
    Phone
    (626) 503-0123
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  2. Gonzalez Plumbing

    ActiveC36 Plumbing

    Alhambra, CA · WC ✓ · 10 mi away

    Proof for Gonzalez Plumbing
    License
    CSLB 1024345
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Mar 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Alhambra, CA · serves California
    Phone
    (310) 913-7381
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  3. Gonzalez Plumbing & Rooter

    ActiveC36 Plumbing

    West Covina, CA · WC exempt · 7 mi away

    Proof for Gonzalez Plumbing & Rooter
    License
    CSLB 1129859
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Dec 31, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    West Covina, CA · serves California
    Phone
    (323) 949-0448
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  4. Graycon Inc

    ActiveC36 Plumbing+4

    City of Industry, CA · WC ✓ · 8 mi away

    Proof for Graycon Inc
    License
    CSLB 255068
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C4 Boiler, Hot Water Heating and Steam Fitting; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing; C38 Refrigeration
    Expires
    Aug 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    City of Industry, CA · serves California
    Phone
    (626) 961-9640
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  5. Graycon Mechanical Inc

    ActiveC36 Plumbing+3

    City of Industry, CA · WC ✓ · 8 mi away

    Proof for Graycon Mechanical Inc
    License
    CSLB 747455
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C4 Boiler, Hot Water Heating and Steam Fitting; C36 Plumbing; C38 Refrigeration
    Expires
    Sep 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    City of Industry, CA · serves California
    Phone
    (626) 961-9640
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  6. Green Eco Construction Inc

    ActiveC36 Plumbing+1

    Covina, CA · WC ✓ · 9 mi away

    Proof for Green Eco Construction Inc
    License
    CSLB 1063673
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C36 Plumbing
    Expires
    Feb 29, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Covina, CA · serves California
    Phone
    (323) 873-9130
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  7. Groundbreaking Plumbing LLC

    ActiveC36 Plumbing

    Glendora, CA · WC exempt · 9 mi away

    Proof for Groundbreaking Plumbing LLC
    License
    CSLB 1160090
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Aug 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Glendora, CA · serves California
    Phone
    (626) 733-7771
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  8. H D Production Plumbing Contractors Inc

    ActiveC36 Plumbing

    Covina, CA · WC ✓ · 9 mi away

    Proof for H D Production Plumbing Contractors Inc
    License
    CSLB 817184
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Feb 28, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Covina, CA · serves California
    Phone
    (626) 966-2884
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  9. H & H Mechanical Inc

    ActiveC4 Boiler, Hot Water Heating and Steam Fitting+1

    Altadena, CA · WC ✓ · 9 mi away

    Proof for H & H Mechanical Inc
    License
    CSLB 644029
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C4 Boiler, Hot Water Heating and Steam Fitting; C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Dec 31, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Altadena, CA · serves California
    Phone
    (626) 791-0968
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  10. H L Construction

    ActiveC36 Plumbing+1

    LA Puente, CA · WC exempt · 10 mi away

    Proof for H L Construction
    License
    CSLB 1006290
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C36 Plumbing
    Expires
    Aug 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    LA Puente, CA · serves California
    Phone
    (626) 363-3872
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  11. H R C Plumbing & 24 Hrs Drain Cleaning

    ActiveC36 Plumbing

    Pasadena, CA · WC exempt · 9 mi away

    Proof for H R C Plumbing & 24 Hrs Drain Cleaning
    License
    CSLB 654874
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Sep 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Pasadena, CA · serves California
    Phone
    (310) 990-3360
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  12. Ha Yong Taek

    ActiveC36 Plumbing

    San Gabriel, CA · WC exempt · 7 mi away

    Proof for Ha Yong Taek
    License
    CSLB 709656
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Jul 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    San Gabriel, CA · serves California
    Phone
    (213) 819-1116
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  13. Haddad Plumbers Inc

    ActiveC36 Plumbing

    Pasadena, CA · WC ✓ · 6 mi away

    Proof for Haddad Plumbers Inc
    License
    CSLB 982500
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Pasadena, CA · serves California
    Phone
    (626) 755-9048
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  14. Hamm L M Inc

    ActiveC36 Plumbing+2

    San Gabriel, CA · WC ✓ · 8 mi away

    Proof for Hamm L M Inc
    License
    CSLB 171598
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
    Expires
    Oct 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    San Gabriel, CA · serves California
    Phone
    (626) 221-8984
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  15. Hart 2 Hart Plumbing Services

    ActiveC36 Plumbing

    Pasadena, CA · WC ✓ · 9 mi away

    Proof for Hart 2 Hart Plumbing Services
    License
    CSLB 1011534
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Feb 29, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Pasadena, CA · serves California
    Phone
    (626) 437-8042
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  16. Hart M H Plumbing Heating & Air Conditioning Inc

    ActiveC36 Plumbing+1

    Pasadena, CA · WC ✓ · 6 mi away

    Proof for Hart M H Plumbing Heating & Air Conditioning Inc
    License
    CSLB 798223
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
    Expires
    Aug 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Pasadena, CA · serves California
    Phone
    (626) 440-1740
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  17. Hartman Plumbing Services

    ActiveC36 Plumbing

    Covina, CA · WC ✓ · 8 mi away

    Proof for Hartman Plumbing Services
    License
    CSLB 1027891
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Jun 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Covina, CA · serves California
    Phone
    (626) 482-5161
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  18. Here to Help Plumbing & Rooter

    ActiveC36 Plumbing

    Glendora, CA · WC ✓ · 8 mi away

    Proof for Here to Help Plumbing & Rooter
    License
    CSLB 1116916
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Feb 29, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Glendora, CA · serves California
    Phone
    (626) 664-0651
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  19. Hickey Plumbing

    ActiveC36 Plumbing

    Altadena, CA · WC ✓ · 9 mi away

    Proof for Hickey Plumbing
    License
    CSLB 459923
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    Jul 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Altadena, CA · serves California
    Phone
    (818) 262-2300
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  20. Hoag Nick

    ActiveC36 Plumbing

    Covina, CA · WC ✓ · 6 mi away

    Proof for Hoag Nick
    License
    CSLB 1038859
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C36 Plumbing
    Expires
    May 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Covina, CA · serves California
    Phone
    (714) 760-8084
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

More cities in California

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

Checked facts from public license files · How ranking works