Licensed Plumbing (C-36) contractors in California

The California Contractors State License Board (CSLB) lists 12,055 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 8, 2026.

Showing 7,381–7,440 of 12,055 contractors

1. O C Backflow

   Santa Ana, CA · CSLB #1039973 · as of October 8, 2026
   Active · clear
2. Oc Backflow Testing

   Westminster, CA · CSLB #726008 · as of October 8, 2026
   Active · clear
3. Occidental Plumbing

   Occidental, CA · CSLB #933799 · as of October 8, 2026
   Active · clear
4. Oceanaire Plumbing INC

   Moorpark, CA · CSLB #904311 · as of October 8, 2026
   Active · clear
5. Ocean Bay Plumbing INC

   Hayward, CA · CSLB #1121317 · as of October 8, 2026
   Active · clear
6. Ocean Blue Plumbing

   Pacifica, CA · CSLB #855954 · as of October 8, 2026
   Active · clear
7. Ocean Hills Plumbing INC

   Vista, CA · CSLB #1011281 · as of October 8, 2026
   Active · clear
8. Ocean Plumbing

   Oakland, CA · CSLB #1133912 · as of October 8, 2026
   Active · clear
9. Oceanside Plumbing

   Oceanside, CA · CSLB #1107799 · as of October 8, 2026
   Active · clear
10. Ocean View Plumbing And Rooter

    Oxnard, CA · CSLB #751305 · as of October 8, 2026
    Active · clear
11. Ochoa Plumbing

    Rohnert Park, CA · CSLB #956268 · as of October 8, 2026
    Active · clear
12. Ochoa Plumbing Sewers & Drains

    Sunnyvale, CA · CSLB #1129386 · as of October 8, 2026
    Active · clear
13. O'connor Plumbing Company INC

    Oak Hills, CA · CSLB #1072345 · as of October 8, 2026
    Active · clear
14. O C Plumbing

    San Jose, CA · CSLB #1028918 · as of October 8, 2026
    Active · clear
15. O C Plumbing

    Placentia, CA · CSLB #825143 · as of October 8, 2026
    Active · clear
16. O C Plumbing

    Stanton, CA · CSLB #757633 · as of October 8, 2026
    Active · clear
17. Oc Plumbing & Backflow

    Anaheim, CA · CSLB #1120739 · as of October 8, 2026
    Active · clear
18. The O C Plumbing Company

    Westminster, CA · CSLB #858277 · as of October 8, 2026
    Active · clear
19. Oc Plumbing & Water Heaters

    Newark, CA · CSLB #1125266 · as of October 8, 2026
    Active · clear
20. Oc Repipes

    Irvine, CA · CSLB #1037177 · as of October 8, 2026
    Active · clear
21. O C - Rooter

    Anaheim, CA · CSLB #1018075 · as of October 8, 2026
    Active · clear
22. Octo Plumbing INC

    Moreno Valley, CA · CSLB #1158500 · as of October 8, 2026
    Active · clear
23. Mark Odney Plumbing

    Agoura Hills, CA · CSLB #842027 · as of October 8, 2026
    Active · clear
24. Odonnell Plumbing

    Yorba Linda, CA · CSLB #1046627 · as of October 8, 2026
    Active · clear
25. Odor No More

    Westminster, CA · CSLB #1051979 · as of October 8, 2026
    Active · clear
26. O'dowd Plumbing INC

    Rohnert Park, CA · CSLB #522217 · as of October 8, 2026
    Active · clear
27. O & D Plumbing

    Bellflower, CA · CSLB #763246 · as of October 8, 2026
    Active · clear
28. Franklin V Paiste DBA Ofk Plumbing

    Chula Vista, CA · CSLB #1049019 · as of October 8, 2026
    Active · clear
29. Og Brothers Plumbing INC

    Cathedral City, CA · CSLB #1028711 · as of October 8, 2026
    Active · clear
30. O G Plumbing

    Napa, CA · CSLB #1034291 · as of October 8, 2026
    Active · clear
31. Og Plumbing

    Oxnard, CA · CSLB #1128227 · as of October 8, 2026
    Active · clear
32. Ohana Plumbing INC

    Murrieta, CA · CSLB #1071844 · as of October 8, 2026
    Active · clear
33. Ohana Plumbing Plus INC

    Lemon Grove, CA · CSLB #1129895 · as of October 8, 2026
    Active · clear
34. O'hearn Plumbing

    West Hills, CA · CSLB #504594 · as of October 8, 2026
    Active · clear
35. Oh MY Clog Plumbing

    Baldwin Park, CA · CSLB #1149618 · as of October 8, 2026
    Active · clear
36. Ohnstad Plumbing

    Truckee, CA · CSLB #1068702 · as of October 8, 2026
    Active · clear
37. Ojai Rooter & Plumbing INC

    Ojai, CA · CSLB #1110980 · as of October 8, 2026
    Active · clear
38. O & J Plumbing Services INC

    San Diego, CA · CSLB #1017676 · as of October 8, 2026
    Active · clear
39. O K Plumbing INC

    Los Angeles, CA · CSLB #743392 · as of October 8, 2026
    Active · clear
40. Lee Olaeta Plumbing

    Petaluma, CA · CSLB #514632 · as of October 8, 2026
    Active · clear
41. John Olague Plumbing

    Bakersfield, CA · CSLB #801306 · as of October 8, 2026
    Active · clear
42. Old Blue Scout Mobile Service

    Angelus Oaks, CA · CSLB #1112914 · as of October 8, 2026
    Active · clear
43. Old Town Plumbing

    Tehachapi, CA · CSLB #1078711 · as of October 8, 2026
    Active · clear
44. O Leary Plumbing INC

    Sunnyvale, CA · CSLB #1008614 · as of October 8, 2026
    Active · clear
45. Ole Hanson Plumbing, LLC

    San Clemente, CA · CSLB #1139177 · as of October 8, 2026
    Active · clear
46. David L Oliveira Plumbing

    Hilmar, CA · CSLB #1076262 · as of October 8, 2026
    Active · clear
47. Olivera's Plumbing

    Santa Rosa, CA · CSLB #821396 · as of October 8, 2026
    Active · clear
48. Olivero Plumbing Company INC

    El Cerrito, CA · CSLB #162170 · as of October 8, 2026
    Active · clear
49. Ollie's Plumbing And Rooter Service

    Arroyo Grande, CA · CSLB #1142785 · as of October 8, 2026
    Active · clear
50. Olmsted Plumbing

    Rio Linda, CA · CSLB #388837 · as of October 8, 2026
    Active · clear
51. Olson's Plumbing And Rooter INC

    Huntington Beach, CA · CSLB #647584 · as of October 8, 2026
    Active · clear
52. Olson Superior Plumbing INC

    Lake Forest, CA · CSLB #1045399 · as of October 8, 2026
    Active · clear
53. Olvera Plumbing And Rooter

    Simi Valley, CA · CSLB #1042681 · as of October 8, 2026
    Active · clear
54. Olver Hernandez Hernandez

    Sherman Oaks, CA · CSLB #1159156 · as of October 8, 2026
    Active · clear
55. O'malley's Plumbing

    Cayucos, CA · CSLB #717290 · as of October 8, 2026
    Active · clear
56. Thomas W O'mara Plumbing INC

    Canyon Country, CA · CSLB #684369 · as of October 8, 2026
    Active · clear
57. Omar's Plumbing

    Escondido, CA · CSLB #1108697 · as of October 8, 2026
    Active · clear
58. Omega Plumbing

    Indio, CA · CSLB #1101003 · as of October 8, 2026
    Active · clear
59. Omega Plumbing

    Burbank, CA · CSLB #967794 · as of October 8, 2026
    Active · clear
60. Omega Plumbing & Rooter

    Los Angeles, CA · CSLB #1021343 · as of October 8, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of October 8, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.