Licensed Plumbing (C-36) contractors in California

The California Contractors State License Board (CSLB) lists 12,023 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 July 2, 2026.

Showing 5,881–5,940 of 12,023 contractors

1. Koch Plumbing

   Wildomar, CA · CSLB #1127706 · as of July 2, 2026
   Active · clear
2. Koehler Plumbing INC

   Santa Maria, CA · CSLB #861363 · as of July 2, 2026
   Active · clear
3. Koh Koh Plumbing

   Anaheim, CA · CSLB #766989 · as of July 2, 2026
   Active · clear
4. Kohler Mechanical INC

   Alta Loma, CA · CSLB #837376 · as of July 2, 2026
   Active · clear
5. Kohl Mechanical

   Santa Rosa, CA · CSLB #1123155 · as of July 2, 2026
   Active · clear
6. K O H Mechanical Contractors INC

   West Jordan, CA · CSLB #776713 · as of July 2, 2026
   Active · clear
7. John Kojigian

   Fresno, CA · CSLB #302633 · as of July 2, 2026
   Active · clear
8. Koko Drains

   South Pasadena, CA · CSLB #1058527 · as of July 2, 2026
   Active · clear
9. Kolb Plumbing

   Rancho Palos Verdes, CA · CSLB #722034 · as of July 2, 2026
   Active · clear
10. Kolo Plumbing

    Orangevale, CA · CSLB #1131319 · as of July 2, 2026
    Active · clear
11. Wes Kolpack Plumbing

    Sonora, CA · CSLB #1038625 · as of July 2, 2026
    Active · clear
12. Kolts Plumbing

    Encinitas, CA · CSLB #1022348 · as of July 2, 2026
    Active · clear
13. Konczak Plumbing

    Santee, CA · CSLB #953492 · as of July 2, 2026
    Active · clear
14. K - One Plumbing

    Rosemead, CA · CSLB #1119320 · as of July 2, 2026
    Active · clear
15. K O P Construction

    West Covina, CA · CSLB #945246 · as of July 2, 2026
    Active · clear
16. K O Plumbing

    Anaheim, CA · CSLB #964288 · as of July 2, 2026
    Active · clear
17. Ko Plumbing INC

    Carlsbad, CA · CSLB #1145043 · as of July 2, 2026
    Active · clear
18. Korkis Plumbing INC

    Lakewood, CA · CSLB #1038781 · as of July 2, 2026
    Active · clear
19. Kosta Plumbing

    Poway, CA · CSLB #1047367 · as of July 2, 2026
    Active · clear
20. Kp-1 Plumbing CO

    Santee, CA · CSLB #914003 · as of July 2, 2026
    Active · clear
21. Kpex Plumbing INC

    San Luis Rey, CA · CSLB #1121804 · as of July 2, 2026
    Active · clear
22. KP Plumbing INC

    Walnut, CA · CSLB #1044093 · as of July 2, 2026
    Active · clear
23. K & P Rooter Service

    Canoga Park, CA · CSLB #1065163 · as of July 2, 2026
    Active · clear
24. K P R Plumbing

    Vista, CA · CSLB #455337 · as of July 2, 2026
    Active · clear
25. KPS Plumbing

    Bakersfield, CA · CSLB #1138050 · as of July 2, 2026
    Active · clear
26. K P S Plumbing CO INC

    Irvine, CA · CSLB #865807 · as of July 2, 2026
    Active · clear
27. Kpt-working So You Don't Have To!

    Westminster, CA · CSLB #789866 · as of July 2, 2026
    Active · clear
28. K Q Plumbing INC

    Santa Clara, CA · CSLB #861600 · as of July 2, 2026
    Active · clear
29. Kraft Plumbing LLC

    Santa Cruz, CA · CSLB #1138846 · as of July 2, 2026
    Active · clear
30. Greg Kranz Plumbing Service

    Fallbrook, CA · CSLB #536330 · as of July 2, 2026
    Active · clear
31. Lee Kratzer Plumbing

    Los Altos, CA · CSLB #829614 · as of July 2, 2026
    Active · clear
32. Kretsinger Plumbing INC

    Idyllwild, CA · CSLB #281887 · as of July 2, 2026
    Active · clear
33. K-roc Plumbing & Backflow

    Escondido, CA · CSLB #1149598 · as of July 2, 2026
    Active · clear
34. Roger Kroeber Stainless Steel Specialties INC

    Lemoore, CA · CSLB #589430 · as of July 2, 2026
    Active · clear
35. KR Plumbing

    Gardena, CA · CSLB #1097359 · as of July 2, 2026
    Active · clear
36. K R S Repiping And Plumbing

    Los Angeles, CA · CSLB #927888 · as of July 2, 2026
    Active · clear
37. K S Kruse

    Pittsburg, CA · CSLB #512710 · as of July 2, 2026
    Active · clear
38. Kryptonite Mechanical INC DBA Kryptonite Metal Works

    Chico, CA · CSLB #1047530 · as of July 2, 2026
    Active · clear
39. K S And W Creative Plumbing

    Los Angeles, CA · CSLB #752962 · as of July 2, 2026
    Active · clear
40. KSB Repipe

    Orange, CA · CSLB #1125163 · as of July 2, 2026
    Active · clear
41. K S Plumbing

    Sunnyvale, CA · CSLB #744415 · as of July 2, 2026
    Active · clear
42. KS Plumbing INC

    Rancho Cordova, CA · CSLB #858545 · as of July 2, 2026
    Active · clear
43. K Star Plumbing

    Sacramento, CA · CSLB #986754 · as of July 2, 2026
    Active · clear
44. K T Cook Plumbing INC

    Lomita, CA · CSLB #1019973 · as of July 2, 2026
    Active · clear
45. K&T Plumbing And Contracting

    Ventura, CA · CSLB #1145855 · as of July 2, 2026
    Active · clear
46. Kt's Plumbing

    San Diego, CA · CSLB #1124907 · as of July 2, 2026
    Active · clear
47. Kuehnel Plumbing LLC

    Simi Valley, CA · CSLB #1118653 · as of July 2, 2026
    Active · clear
48. Michael Kuenzli Plumbing CO

    San Francisco, CA · CSLB #576600 · as of July 2, 2026
    Active · clear
49. Josef Kufa Plumbing INC

    Lakeside, CA · CSLB #610527 · as of July 2, 2026
    Active · clear
50. Kuhlman's Plumbing

    Pacific Grove, CA · CSLB #769693 · as of July 2, 2026
    Active · clear
51. John Kuipers Plumbing

    Meadow Valley, CA · CSLB #466847 · as of July 2, 2026
    Active · clear
52. Toby D Kunz Plumbing

    Cameron Park, CA · CSLB #740970 · as of July 2, 2026
    Active · clear
53. Kurtis Plumbing

    Newport Beach, CA · CSLB #799667 · as of July 2, 2026
    Active · clear
54. Kurt's Plumbing

    San Francisco, CA · CSLB #856572 · as of July 2, 2026
    Active · clear
55. Kustom Cal Plumbing INC

    Hollister, CA · CSLB #1083151 · as of July 2, 2026
    Active · clear
56. Kustom Plumbing INC

    Bell, CA · CSLB #1081096 · as of July 2, 2026
    Active · clear
57. Kuttruff Plumbing

    Pasadena, CA · CSLB #325942 · as of July 2, 2026
    Active · clear
58. K V A Plumbing INC

    Burbank, CA · CSLB #933645 · as of July 2, 2026
    Active · clear
59. KVN Plumbing

    Sunnyvale, CA · CSLB #1080003 · as of July 2, 2026
    Active · clear
60. K W Plumbing

    Oceanside, CA · CSLB #915717 · as of July 2, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 2, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.