Licensed General Building (B) contractors in Columbia, CA

The California Contractors State License Board (CSLB) lists 23 General Building (B) contractors in Columbia, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 8, 2026.

23 contractors

1. American Made Masonry

   Columbia, CA · CSLB #956393 · as of October 8, 2026
   Active · clear
2. Ed Renovate Enchance Negotciate Trade Service

   Columbia, CA · CSLB #593201 · as of October 8, 2026
   Active · clear
3. Adam Ehlers Construction

   Columbia, CA · CSLB #1118141 · as of October 8, 2026
   Active · clear
4. First Finish LLC

   Columbia, CA · CSLB #981707 · as of October 8, 2026
   Active · clear
5. Grayum Construction

   Columbia, CA · CSLB #842366 · as of October 8, 2026
   Active · clear
6. Gunn Henderson Construction

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

   Columbia, CA · CSLB #826584 · as of October 8, 2026
   Active · clear
8. Humphrey Rich Construction Group INC

   Columbia, CA · CSLB #1035599 · as of October 8, 2026
   Active · clear
9. KR Construction

   Columbia, CA · CSLB #1121038 · as of October 8, 2026
   Active · clear
10. Bradford W Lorenzen DBA Lorenzen Construction

    Columbia, CA · CSLB #706031 · as of October 8, 2026
    Active · clear
11. Max Potter Construction

    Columbia, CA · CSLB #835869 · as of October 8, 2026
    Active · clear
12. Milcon Systems INC

    Columbia, CA · CSLB #955962 · as of October 8, 2026
    Active · clear
13. Mobley Construction Company

    Columbia, CA · CSLB #1144709 · as of October 8, 2026
    Active · clear
14. Mother Lode Services

    Columbia, CA · CSLB #727768 · as of October 8, 2026
    Active · clear
15. Mountain Mann Construction

    Columbia, CA · CSLB #1078300 · as of October 8, 2026
    Active · clear
16. M R G Construction

    Columbia, CA · CSLB #1002412 · as of October 8, 2026
    Active · clear
17. Eric Owens Construction

    Columbia, CA · CSLB #809550 · as of October 8, 2026
    Active · clear
18. Bob Ragan Construction

    Columbia, CA · CSLB #335069 · as of October 8, 2026
    Active · clear
19. Duane Ragan Construction

    Columbia, CA · CSLB #874188 · as of October 8, 2026
    Active · clear
20. Ron Hessler Construction INC

    Columbia, CA · CSLB #414227 · as of October 8, 2026
    Active · clear
21. Zak Sawyer Construction

    Columbia, CA · CSLB #973204 · as of October 8, 2026
    Active · clear
22. Tri County Construction

    Columbia, CA · CSLB #926021 · as of October 8, 2026
    Active · clear
23. Michael Patrick Gorman

    Columbia, CA · CSLB #989032 · as of October 8, 2026
    Suspended · bond

See all General Building (B) contractors in California →

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.