Licensed Plumbing (C-36) contractors in California

The California Contractors State License Board (CSLB) lists 12,091 California contractors classified C-36 (Plumbing (C-36)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of October 14, 2026.

Showing 7,501–7,560 of 12,091 contractors

1. One Way Plumbing INC

   Santa Rosa, CA · CSLB #854537 · as of October 14, 2026
   Active · clear
2. One Way Rooter & Plumbing

   Santa Fe Springs, CA · CSLB #537893 · as of October 14, 2026
   Active · clear
3. One Way Rooter Services INC

   Los Angeles, CA · CSLB #1100498 · as of October 14, 2026
   Active · clear
4. Andrew Ong

   Novato, CA · CSLB #1104468 · as of October 14, 2026
   Active · clear
5. Onnuri Plumbing Construction

   Rowland Heights, CA · CSLB #793061 · as of October 14, 2026
   Active · clear
6. Onodera Plumbing

   Sacramento, CA · CSLB #788773 · as of October 14, 2026
   Active · clear
7. On Point Plumbing

   Chula Vista, CA · CSLB #1020877 · as of October 14, 2026
   Active · clear
8. On Point Plumbing Systems INC

   Saugus, CA · CSLB #1029874 · as of October 14, 2026
   Active · clear
9. On R Way Plumbing LLC

   Hayward, CA · CSLB #1036700 · as of October 14, 2026
   Active · clear
10. On-site Plumbing CO

    Los Angeles, CA · CSLB #1076297 · as of October 14, 2026
    Active · clear
11. On Site Plumbing & Septic

    Atascadero, CA · CSLB #1125955 · as of October 14, 2026
    Active · clear
12. Eduaedo Loza DBA On The Clock Rooter & Plumbing

    Oakland, CA · CSLB #1077669 · as of October 14, 2026
    Active · clear
13. On The Go Plumbing And Drains

    Buena Park, CA · CSLB #1131562 · as of October 14, 2026
    Active · clear
14. On The Ritz Plumbing INC

    Penryn, CA · CSLB #939954 · as of October 14, 2026
    Active · clear
15. On The Spot Plumbing

    Contoe, CA · CSLB #913693 · as of October 14, 2026
    Active · clear
16. On Time Plumbing

    Mountain View, CA · CSLB #992579 · as of October 14, 2026
    Active · clear
17. On Time Plumbing Services INC

    Panorama City, CA · CSLB #1143917 · as of October 14, 2026
    Active · clear
18. On Time Repipe Specialist

    Moreno Valley, CA · CSLB #1095445 · as of October 14, 2026
    Active · clear
19. On-time Royal Plumbing

    Los Angeles, CA · CSLB #1105233 · as of October 14, 2026
    Active · clear
20. On Time Water Heaters INC

    Simi Valley, CA · CSLB #1136748 · as of October 14, 2026
    Active · clear
21. O & O Plumbing CO INC

    Valley Village, CA · CSLB #938467 · as of October 14, 2026
    Active · clear
22. Open Flow Plumbing

    Arleta, CA · CSLB #1067822 · as of October 14, 2026
    Active · clear
23. O P Plumbing INC

    Santa Ana, CA · CSLB #1020988 · as of October 14, 2026
    Active · clear
24. Optimal Plumbing

    Lake Forest, CA · CSLB #942010 · as of October 14, 2026
    Active · clear
25. Optimo Plumbing And Backflow INC

    Los Angeles, CA · CSLB #1009954 · as of October 14, 2026
    Active · clear
26. Optimum Plumbing Services INC

    Santa Ana, CA · CSLB #938498 · as of October 14, 2026
    Active · clear
27. Optimus Maximus Plumbing

    Riverside, CA · CSLB #1087559 · as of October 14, 2026
    Active · clear
28. Option 1 Plumbing CO

    Perris, CA · CSLB #941890 · as of October 14, 2026
    Active · clear
29. Options Plumbing CO

    Whittier, CA · CSLB #1050207 · as of October 14, 2026
    Active · clear
30. Orange County Dependable Plumbing INC

    Mission Viejo, CA · CSLB #1153778 · as of October 14, 2026
    Active · clear
31. Orange County Drains And Sewer Services LLC

    Yorba Linda, CA · CSLB #1115706 · as of October 14, 2026
    Active · clear
32. Orange County Plumbing INC

    Santa Ana, CA · CSLB #852953 · as of October 14, 2026
    Active · clear
33. Orange County Royal Plumbing INC

    Costa Mesa, CA · CSLB #984145 · as of October 14, 2026
    Active · clear
34. Orange Independent Plumbing Services

    Ontario, CA · CSLB #1005919 · as of October 14, 2026
    Active · clear
35. Orange Plumbing And Rooter INC

    Fountain Valley, CA · CSLB #721968 · as of October 14, 2026
    Active · clear
36. Oran Plumbing Corp

    San Francisco, CA · CSLB #762214 · as of October 14, 2026
    Active · clear
37. Orbix Plumbing

    Sun Valley, CA · CSLB #1111789 · as of October 14, 2026
    Active · clear
38. Orca Plumbing

    Escondido, CA · CSLB #1103728 · as of October 14, 2026
    Active · clear
39. Ordep Plumbing

    Reseda, CA · CSLB #1149865 · as of October 14, 2026
    Active · clear
40. Ordonez Plumbing

    Ventura, CA · CSLB #1089279 · as of October 14, 2026
    Active · clear
41. Oria Plumbing

    Rohnert Park, CA · CSLB #1116222 · as of October 14, 2026
    Active · clear
42. Original Plumbing

    San Diego, CA · CSLB #1085592 · as of October 14, 2026
    Active · clear
43. Original Westwood Plumbing INC

    Hermosa Beach, CA · CSLB #1009559 · as of October 14, 2026
    Active · clear
44. Orin Good Plumbing

    Mariposa, CA · CSLB #1085734 · as of October 14, 2026
    Active · clear
45. Orion Plumbing

    San Lorenzo, CA · CSLB #1115605 · as of October 14, 2026
    Active · clear
46. Orlando Almaraz Vargas

    Sun Valley, CA · CSLB #1089321 · as of October 14, 2026
    Active · clear
47. Orlando's Plumbing & Rooter

    Granada Hills, CA · CSLB #1045870 · as of October 14, 2026
    Active · clear
48. Richard Orloff

    June Lake, CA · CSLB #529772 · as of October 14, 2026
    Active · clear
49. Ornelas Plumbing INC

    Pittsburg, CA · CSLB #1108007 · as of October 14, 2026
    Active · clear
50. Oro Pro Plumbing INC

    Redwood City, CA · CSLB #998394 · as of October 14, 2026
    Active · clear
51. Oroson Plumbing

    Lodi, CA · CSLB #1029328 · as of October 14, 2026
    Active · clear
52. Orozco Plumbing & Rooter

    Santa Clara, CA · CSLB #1126162 · as of October 14, 2026
    Active · clear
53. Ortega Plumbing

    Surprise, CA · CSLB #961196 · as of October 14, 2026
    Active · clear
54. Ortega Plumbing & Rooter LLC

    Richmond, CA · CSLB #1105758 · as of October 14, 2026
    Active · clear
55. Ortega Plumbing Services INC

    Los Angeles, CA · CSLB #1102172 · as of October 14, 2026
    Active · clear
56. Ortega's Plumbing

    Van Nuys, CA · CSLB #1074830 · as of October 14, 2026
    Active · clear
57. Ortega's Plumbing Solutions

    San Fernando, CA · CSLB #1121013 · as of October 14, 2026
    Active · clear
58. Mario Cesar Ortiz

    West Covina, CA · CSLB #1047476 · as of October 14, 2026
    Active · clear
59. Miguel A Ortiz

    Oxnard, CA · CSLB #1047015 · as of October 14, 2026
    Active · clear
60. Ortiz Plumbing Drain Cleaning

    Livermore, CA · CSLB #1053855 · as of October 14, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of October 14, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.