Licensed General Engineering (A) contractors in Antioch, CA

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

21 contractors

1. A & A Consulting Engineers

   Antioch, CA · CSLB #864170 · as of October 6, 2026
   Active · clear
2. American Millwright Services

   Antioch, CA · CSLB #1131514 · as of October 6, 2026
   Active · clear
3. Andre's Mechanical And General Engineering INC

   Antioch, CA · CSLB #924701 · as of October 6, 2026
   Active · clear
4. Bayside Trenchless INC

   Antioch, CA · CSLB #1120949 · as of October 6, 2026
   Active · clear
5. Conco Services LLC

   Antioch, CA · CSLB #1127176 · as of October 6, 2026
   Active · clear
6. DHR General Construction Corp

   Antioch, CA · CSLB #1131054 · as of October 6, 2026
   Active · clear
7. Diamond Petroleum Services INC

   Antioch, CA · CSLB #1005444 · as of October 6, 2026
   Active · clear
8. Drill Tech Drilling & Shoring INC

   Antioch, CA · CSLB #745354 · as of October 6, 2026
   Active · clear
9. Drill Tech - Obayashi Joint Venture

   Antioch, CA · CSLB #1129214 · as of October 6, 2026
   Active · clear
10. Harrison Industrial Services INC

    Antioch, CA · CSLB #985256 · as of October 6, 2026
    Active · clear
11. H V USA Enterprises

    Antioch, CA · CSLB #1092514 · as of October 6, 2026
    Active · clear
12. Hydro Kingz INC

    Antioch, CA · CSLB #1151169 · as of October 6, 2026
    Active · clear
13. Cabinet Essentials INC DBA Otb Construction

    Antioch, CA · CSLB #791845 · as of October 6, 2026
    Active · clear
14. Plant Reclamation

    Antioch, CA · CSLB #1039599 · as of October 6, 2026
    Active · clear
15. Priith Engineering

    Antioch, CA · CSLB #896523 · as of October 6, 2026
    Active · clear
16. Stier Engineering

    Antioch, CA · CSLB #1148360 · as of October 6, 2026
    Active · clear
17. Stroer & Graff INC

    Antioch, CA · CSLB #397082 · as of October 6, 2026
    Active · clear
18. Tidal Marine Construction INC

    Antioch, CA · CSLB #893867 · as of October 6, 2026
    Active · clear
19. T N B Construction

    Antioch, CA · CSLB #947604 · as of October 6, 2026
    Active · clear
20. Vortex Marine Construction INC

    Antioch, CA · CSLB #649452 · as of October 6, 2026
    Active · clear
21. Rudolph & Sons

    Antioch, CA · CSLB #813850 · 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.