Licensed General Building (B) contractors in Columbia, CA

The California Contractors State License Board (CSLB) lists 28 General Building (B) contractors in Columbia, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

28 contractors

1. C And K General Contracting

   Columbia, CA · CSLB #596246 · as of June 27, 2026
   Active · clear
2. Warren R Christianson

   Columbia, CA · CSLB #344886 · as of June 27, 2026
   Active · clear
3. Ed Renovate Enchance Negotciate Trade Service

   Columbia, CA · CSLB #593201 · as of June 27, 2026
   Active · clear
4. Adam Ehlers Construction

   Columbia, CA · CSLB #1118141 · as of June 27, 2026
   Active · clear
5. First Finish LLC

   Columbia, CA · CSLB #981707 · as of June 27, 2026
   Active · clear
6. Grayum Construction

   Columbia, CA · CSLB #842366 · as of June 27, 2026
   Active · clear
7. Gunn Henderson Construction

   Columbia, CA · CSLB #1117665 · as of June 27, 2026
   Active · clear
8. Ray Hall Construction INC

   Columbia, CA · CSLB #826584 · as of June 27, 2026
   Active · clear
9. Humphrey Rich Construction Group INC

   Columbia, CA · CSLB #1035599 · as of June 27, 2026
   Active · clear
10. KR Construction

    Columbia, CA · CSLB #1121038 · as of June 27, 2026
    Active · clear
11. Bradford W Lorenzen DBA Lorenzen Construction

    Columbia, CA · CSLB #706031 · as of June 27, 2026
    Active · clear
12. Max Potter Construction

    Columbia, CA · CSLB #835869 · as of June 27, 2026
    Active · clear
13. Mid America Contracting INC

    Columbia, CA · CSLB #1065417 · as of June 27, 2026
    Active · clear
14. Milcon Systems INC

    Columbia, CA · CSLB #955962 · as of June 27, 2026
    Active · clear
15. Mobley Construction Company

    Columbia, CA · CSLB #1144709 · as of June 27, 2026
    Active · clear
16. Mother Lode Services

    Columbia, CA · CSLB #727768 · as of June 27, 2026
    Active · clear
17. Mountain Mann Construction

    Columbia, CA · CSLB #1078300 · as of June 27, 2026
    Active · clear
18. M R G Construction

    Columbia, CA · CSLB #1002412 · as of June 27, 2026
    Active · clear
19. Eric Owens Construction

    Columbia, CA · CSLB #809550 · as of June 27, 2026
    Active · clear
20. Bob Ragan Construction

    Columbia, CA · CSLB #335069 · as of June 27, 2026
    Active · clear
21. Duane Ragan Construction

    Columbia, CA · CSLB #874188 · as of June 27, 2026
    Active · clear
22. Ron Hessler Construction INC

    Columbia, CA · CSLB #414227 · as of June 27, 2026
    Active · clear
23. Zak Sawyer Construction

    Columbia, CA · CSLB #973204 · as of June 27, 2026
    Active · clear
24. Tri County Construction

    Columbia, CA · CSLB #926021 · as of June 27, 2026
    Active · clear
25. Wynne Construction

    Columbia, CA · CSLB #1027918 · as of June 27, 2026
    Active · clear
26. Ed Cribari Construction

    Columbia, CA · CSLB #449896 · as of June 27, 2026
    Suspended · bond
27. Michael Patrick Gorman

    Columbia, CA · CSLB #989032 · as of June 27, 2026
    Suspended · bond
28. American Made Masonry

    Columbia, CA · CSLB #956393 · as of June 27, 2026
    Suspended · workers' comp

See all General Building (B) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.