Licensed General Engineering (A) contractors in Sonoma, CA

The California Contractors State License Board (CSLB) lists 21 General Engineering (A) contractors in Sonoma, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 6, 2026.

21 contractors

1. Abide International INC

   Sonoma, CA · CSLB #462833 · as of October 6, 2026
   Active · clear
2. American Builders

   Sonoma, CA · CSLB #427930 · as of October 6, 2026
   Active · clear
3. Broderick General Engineering INC

   Sonoma, CA · CSLB #750809 · as of October 6, 2026
   Active · clear
4. Dunham's Back-hoe Service

   Sonoma, CA · CSLB #379304 · as of October 6, 2026
   Active · clear
5. Easton Plumbing INC

   Sonoma, CA · CSLB #1059513 · as of October 6, 2026
   Active · clear
6. E K Excavating INC

   Sonoma, CA · CSLB #275372 · as of October 6, 2026
   Active · clear
7. Gopher - It Trenchless

   Sonoma, CA · CSLB #982140 · as of October 6, 2026
   Active · clear
8. Griffiths Construction

   Sonoma, CA · CSLB #692856 · as of October 6, 2026
   Active · clear
9. Grossi James Construction

   Sonoma, CA · CSLB #789874 · as of October 6, 2026
   Active · clear
10. J R Excavating & Sons INC

    Sonoma, CA · CSLB #949209 · as of October 6, 2026
    Active · clear
11. Lunny Engineering INC

    Sonoma, CA · CSLB #982088 · as of October 6, 2026
    Active · clear
12. Mak Engineering INC

    Sonoma, CA · CSLB #651533 · as of October 6, 2026
    Active · clear
13. Manzoni Trucking & Excavating INC

    Sonoma, CA · CSLB #862651 · as of October 6, 2026
    Active · clear
14. Mcmahon Fernandez Construction INC

    Sonoma, CA · CSLB #1055940 · as of October 6, 2026
    Active · clear
15. Murray Building INC

    Sonoma, CA · CSLB #646709 · as of October 6, 2026
    Active · clear
16. Ryan Engineering Incorporated

    Sonoma, CA · CSLB #476513 · as of October 6, 2026
    Active · clear
17. Serres Corporation

    Sonoma, CA · CSLB #471196 · as of October 6, 2026
    Active · clear
18. Thomas Anderson & CO

    Sonoma, CA · CSLB #715281 · as of October 6, 2026
    Active · clear
19. Versaggi Construction

    Sonoma, CA · CSLB #389865 · as of October 6, 2026
    Active · clear
20. Wellander Corporation

    Sonoma, CA · CSLB #985622 · as of October 6, 2026
    Active · clear
21. Pioneer Builders

    Sonoma, CA · CSLB #555580 · as of October 6, 2026
    Suspended · bond

See all General Engineering (A) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of October 6, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.