DouxProcess Directory

Ask for any business in the US.

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

you asked:

Fire sprinkler contractors in Diamond Bar, CA

5 fire sprinkler contractors in Diamond Bar, CA; 565 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. Orange County Fire Protection

    ActiveC16 Fire Protection+2

    Orange, CA · WC ✓ · 12 mi away

    Proof for Orange County Fire Protection
    License
    CSLB 326604
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C7 Low Voltage Systems; C10 Electrical; C16 Fire Protection
    Expires
    Dec 31, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Orange, CA · serves California
    Phone
    (714) 974-9025
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  2. Ortiz Fire Protection

    ActiveC16 Fire Protection

    Anaheim, CA · WC ✓ · 11 mi away

    Proof for Ortiz Fire Protection
    License
    CSLB 869383
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Dec 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Anaheim, CA · serves California
    Phone
    (714) 630-0950
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  3. Positive Plumbing Inc

    ActiveC16 Fire Protection+2

    Glendora, CA · WC exempt · 11 mi away

    Proof for Positive Plumbing Inc
    License
    CSLB 540754
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C16 Fire Protection; C36 Plumbing
    Expires
    May 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Glendora, CA · serves California
    Phone
    (626) 444-4607
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  4. Preferred Fire Systems Inc

    ActiveC16 Fire Protection

    LA Verne, CA · WC ✓ · 11 mi away

    Proof for Preferred Fire Systems Inc
    License
    CSLB 1137874
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Jul 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    LA Verne, CA · serves California
    Phone
    (909) 323-3129
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  5. Premium Fire & Safety Services

    ActiveC16 Fire Protection

    LA Puente, CA · WC ✓ · 10 mi away

    Proof for Premium Fire & Safety Services
    License
    CSLB 1103943
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    LA Puente, CA · serves California
    Phone
    (626) 705-4338
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  6. Proven Fire Protection

    ActiveC16 Fire Protection

    LA Mirada, CA · WC exempt · 13 mi away

    Proof for Proven Fire Protection
    License
    CSLB 1151606
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Mar 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    LA Mirada, CA · serves California
    Phone
    (657) 615-2577
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  7. Pumpman Socal

    ActiveC16 Fire Protection+2

    Baldwin Park, CA · WC ✓ · 11 mi away

    Proof for Pumpman Socal
    License
    CSLB 1024442
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection; C36 Plumbing; D21 Machinery and Pumps
    Expires
    Mar 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Baldwin Park, CA · serves California
    Phone
    (626) 939-0300
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  8. Qualco Fire Protection Inc

    ActiveC16 Fire Protection

    Santa Fe Springs, CA · WC ✓ · 15 mi away

    Proof for Qualco Fire Protection Inc
    License
    CSLB 786012
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Oct 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Santa Fe Springs, CA · serves California
    Phone
    (562) 949-2266
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  9. Qualco Fire Protection Inc

    ActivePrivate motor carrier

    Santa Fe Springs, CA · 15 mi away

    Proof for Qualco Fire Protection Inc
    USDOT registration
    US-DOT 2740204
    Issuer
    US-DOT
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    Santa Fe Springs, CA · serves California
    Phone
    (562) 949-2266
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-DOT record
  10. Red Beacon Fire & Electric Inc

    ActiveC16 Fire Protection+1

    Orange, CA · WC ✓ · 13 mi away

    Proof for Red Beacon Fire & Electric Inc
    License
    CSLB 1041064
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C10 Electrical; C16 Fire Protection
    Expires
    Nov 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Orange, CA · serves California
    Phone
    (855) 202-2966
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  11. Reliant Spray Systems Inc

    ActiveC16 Fire Protection+1

    LA Verne, CA · WC ✓ · 11 mi away

    Proof for Reliant Spray Systems Inc
    License
    CSLB 387020
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C16 Fire Protection
    Expires
    Sep 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    LA Verne, CA · serves California
    Phone
    (909) 596-9981
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  12. Rely-On Technologies

    ActiveC16 Fire Protection+2

    Fullerton, CA · WC ✓ · 11 mi away

    Proof for Rely-On Technologies
    License
    CSLB 506096
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C16 Fire Protection; D34 Prefabricated Equipment
    Expires
    Jan 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Fullerton, CA · serves California
    Phone
    (562) 697-7095
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  13. Residential Fire Systems Inc

    ActiveC16 Fire Protection+1

    Anaheim, CA · WC ✓ · 11 mi away

    Proof for Residential Fire Systems Inc
    License
    CSLB 786965
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C10 Electrical; C16 Fire Protection
    Expires
    Nov 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Anaheim, CA · serves California
    Phone
    (714) 666-8450
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  14. Roelle Michael G Plumbing and Fire Sprinkler Contractor

    ActiveC16 Fire Protection+1

    Irwindale, CA · WC exempt · 11 mi away

    Proof for Roelle Michael G Plumbing and Fire Sprinkler Contractor
    License
    CSLB 271993
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection; C36 Plumbing
    Expires
    Apr 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Irwindale, CA · serves California
    Phone
    (626) 625-9452
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  15. Roelle Michael G Plumbing & Fire Sprinkler Contractor Inc

    ActiveC16 Fire Protection+2

    Irwindale, CA · WC exempt · 11 mi away

    Proof for Roelle Michael G Plumbing & Fire Sprinkler Contractor Inc
    License
    CSLB 743562
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C16 Fire Protection; C36 Plumbing
    Expires
    Dec 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Irwindale, CA · serves California
    Phone
    (626) 625-9452
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  16. Route 66 Fire Protection Inc

    ActiveC16 Fire Protection

    LA Verne, CA · WC ✓ · 11 mi away

    Proof for Route 66 Fire Protection Inc
    License
    CSLB 909815
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Jan 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    LA Verne, CA · serves California
    Phone
    (909) 596-8393
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  17. S D L Fire Protection Inc

    ActiveC16 Fire Protection

    Whittier, CA · WC exempt · 12 mi away

    Proof for S D L Fire Protection Inc
    License
    CSLB 1017716
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Apr 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Whittier, CA · serves California
    Phone
    (949) 232-6967
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  18. Santa Fe Fire Protection

    ActiveC16 Fire Protection

    Whittier, CA · WC exempt · 14 mi away

    Proof for Santa Fe Fire Protection
    License
    CSLB 821130
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection
    Expires
    Jun 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Whittier, CA · serves California
    Phone
    (562) 692-5637
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  19. Scott Plumbing Inc

    ActiveC16 Fire Protection+1

    Santa Fe Springs, CA · WC ✓ · 15 mi away

    Proof for Scott Plumbing Inc
    License
    CSLB 813415
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection; C36 Plumbing
    Expires
    Oct 31, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Santa Fe Springs, CA · serves California
    Phone
    (562) 944-9793
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  20. Solepacific

    ActiveC16 Fire Protection+1

    Anaheim, CA · WC ✓ · 11 mi away

    Proof for Solepacific
    License
    CSLB 1000609
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C16 Fire Protection
    Expires
    Jan 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Anaheim, CA · serves California
    Phone
    (714) 577-0070
    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