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 5,821–5,880 of 12,055 contractors

1. Kohler Mechanical INC

   Alta Loma, CA · CSLB #837376 · as of October 8, 2026
   Active · clear
2. Kohl Mechanical

   Santa Rosa, CA · CSLB #1123155 · as of October 8, 2026
   Active · clear
3. K O H Mechanical Contractors INC

   West Jordan, CA · CSLB #776713 · as of October 8, 2026
   Active · clear
4. John Kojigian

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

   South Pasadena, CA · CSLB #1058527 · as of October 8, 2026
   Active · clear
6. Kolb Plumbing

   Rancho Palos Verdes, CA · CSLB #722034 · as of October 8, 2026
   Active · clear
7. Kolo Plumbing

   Orangevale, CA · CSLB #1131319 · as of October 8, 2026
   Active · clear
8. Wes Kolpack Plumbing

   Sonora, CA · CSLB #1038625 · as of October 8, 2026
   Active · clear
9. Kolts Plumbing

   Encinitas, CA · CSLB #1022348 · as of October 8, 2026
   Active · clear
10. Konakis Plumbing

    Murrieta, CA · CSLB #1137035 · as of October 8, 2026
    Active · clear
11. Konczak Plumbing

    Santee, CA · CSLB #953492 · as of October 8, 2026
    Active · clear
12. K - One Plumbing

    Rosemead, CA · CSLB #1119320 · as of October 8, 2026
    Active · clear
13. K O P Construction

    West Covina, CA · CSLB #945246 · as of October 8, 2026
    Active · clear
14. Ko Plumbing INC

    Carlsbad, CA · CSLB #1145043 · as of October 8, 2026
    Active · clear
15. Korkis Plumbing INC

    Lakewood, CA · CSLB #1038781 · as of October 8, 2026
    Active · clear
16. Kosta Plumbing

    Poway, CA · CSLB #1047367 · as of October 8, 2026
    Active · clear
17. Kp-1 Plumbing CO

    Santee, CA · CSLB #914003 · as of October 8, 2026
    Active · clear
18. Kpex Plumbing INC

    San Luis Rey, CA · CSLB #1121804 · as of October 8, 2026
    Active · clear
19. KP Plumbing INC

    Walnut, CA · CSLB #1044093 · as of October 8, 2026
    Active · clear
20. K & P Rooter Service

    Canoga Park, CA · CSLB #1065163 · as of October 8, 2026
    Active · clear
21. K P R Plumbing

    Vista, CA · CSLB #455337 · as of October 8, 2026
    Active · clear
22. KPS Plumbing

    Bakersfield, CA · CSLB #1138050 · as of October 8, 2026
    Active · clear
23. K P S Plumbing CO INC

    Irvine, CA · CSLB #865807 · as of October 8, 2026
    Active · clear
24. Kpt-working So You Don't Have To!

    Westminster, CA · CSLB #789866 · as of October 8, 2026
    Active · clear
25. K Q Plumbing INC

    Santa Clara, CA · CSLB #861600 · as of October 8, 2026
    Active · clear
26. Kraft Plumbing LLC

    Santa Cruz, CA · CSLB #1138846 · as of October 8, 2026
    Active · clear
27. Kramers Plumbing

    Placentia, CA · CSLB #1065597 · as of October 8, 2026
    Active · clear
28. Greg Kranz Plumbing Service

    Fallbrook, CA · CSLB #536330 · as of October 8, 2026
    Active · clear
29. Lee Kratzer Plumbing

    Los Altos, CA · CSLB #829614 · as of October 8, 2026
    Active · clear
30. Kretsinger Plumbing INC

    Idyllwild, CA · CSLB #281887 · as of October 8, 2026
    Active · clear
31. K-roc Plumbing & Backflow

    Escondido, CA · CSLB #1149598 · as of October 8, 2026
    Active · clear
32. Roger Kroeber Stainless Steel Specialties INC

    Lemoore, CA · CSLB #589430 · as of October 8, 2026
    Active · clear
33. KR Plumbing

    Gardena, CA · CSLB #1097359 · as of October 8, 2026
    Active · clear
34. K R S Repiping And Plumbing

    Los Angeles, CA · CSLB #927888 · as of October 8, 2026
    Active · clear
35. K S Kruse

    Pittsburg, CA · CSLB #512710 · as of October 8, 2026
    Active · clear
36. Kryptonite Mechanical INC DBA Kryptonite Metal Works

    Chico, CA · CSLB #1047530 · as of October 8, 2026
    Active · clear
37. K S And W Creative Plumbing

    Los Angeles, CA · CSLB #752962 · as of October 8, 2026
    Active · clear
38. KSF Backflow

    Clovis, CA · CSLB #1159129 · as of October 8, 2026
    Active · clear
39. K S Plumbing

    Sunnyvale, CA · CSLB #744415 · as of October 8, 2026
    Active · clear
40. KS Plumbing INC

    Rancho Cordova, CA · CSLB #858545 · as of October 8, 2026
    Active · clear
41. K Star Plumbing

    Sacramento, CA · CSLB #986754 · as of October 8, 2026
    Active · clear
42. K T Cook Plumbing INC

    Lomita, CA · CSLB #1019973 · as of October 8, 2026
    Active · clear
43. K&T Plumbing And Contracting

    Ventura, CA · CSLB #1145855 · as of October 8, 2026
    Active · clear
44. Kt's Plumbing

    San Diego, CA · CSLB #1124907 · as of October 8, 2026
    Active · clear
45. Kuehnel Plumbing LLC

    Simi Valley, CA · CSLB #1118653 · as of October 8, 2026
    Active · clear
46. Michael Kuenzli Plumbing CO

    San Francisco, CA · CSLB #576600 · as of October 8, 2026
    Active · clear
47. Josef Kufa Plumbing INC

    Lakeside, CA · CSLB #610527 · as of October 8, 2026
    Active · clear
48. Kuhlman's Plumbing

    Pacific Grove, CA · CSLB #769693 · as of October 8, 2026
    Active · clear
49. John Kuipers Plumbing

    Meadow Valley, CA · CSLB #466847 · as of October 8, 2026
    Active · clear
50. Toby D Kunz Plumbing

    Cameron Park, CA · CSLB #740970 · as of October 8, 2026
    Active · clear
51. Kurtis Plumbing

    Newport Beach, CA · CSLB #799667 · as of October 8, 2026
    Active · clear
52. Kurt's Plumbing

    San Francisco, CA · CSLB #856572 · as of October 8, 2026
    Active · clear
53. Kustom Cal Plumbing INC

    Hollister, CA · CSLB #1083151 · as of October 8, 2026
    Active · clear
54. Kustom Plumbing INC

    Bell, CA · CSLB #1081096 · as of October 8, 2026
    Active · clear
55. Kuttruff Plumbing

    Pasadena, CA · CSLB #325942 · as of October 8, 2026
    Active · clear
56. K V A Plumbing INC

    Burbank, CA · CSLB #933645 · as of October 8, 2026
    Active · clear
57. KVN Plumbing

    Sunnyvale, CA · CSLB #1080003 · as of October 8, 2026
    Active · clear
58. K W Plumbing

    Oceanside, CA · CSLB #915717 · as of October 8, 2026
    Active · clear
59. KW Plumbing

    La Quinta, CA · CSLB #1048264 · as of October 8, 2026
    Active · clear
60. L3 Plumbing

    Turlock, CA · CSLB #1077273 · 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.