Licensed General Engineering (A) contractors in Castro Valley, CA

The California Contractors State License Board (CSLB) lists 18 General Engineering (A) contractors in Castro Valley, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 6, 2026.

18 contractors

1. A-1 Contracting LLC

   Castro Valley, CA · CSLB #1154993 · as of October 6, 2026
   Active · clear
2. Aaa Plumbing & Remodeling INC

   Castro Valley, CA · CSLB #1052769 · as of October 6, 2026
   Active · clear
3. Alameda Engineering

   Castro Valley, CA · CSLB #562641 · as of October 6, 2026
   Active · clear
4. Buchmann INC

   Castro Valley, CA · CSLB #1004484 · as of October 6, 2026
   Active · clear
5. Deigert Engineering & Construction

   Castro Valley, CA · CSLB #860878 · as of October 6, 2026
   Active · clear
6. Drainage Repair Company

   Castro Valley, CA · CSLB #1139764 · as of October 6, 2026
   Active · clear
7. ML Construction

   Castro Valley, CA · CSLB #1089551 · as of October 6, 2026
   Active · clear
8. Owen

   Castro Valley, CA · CSLB #395410 · as of October 6, 2026
   Active · clear
9. Steven L Phillips Construction INC DBA Phillips Construction

   Castro Valley, CA · CSLB #442048 · as of October 6, 2026
   Active · clear
10. Picon F R P INC

    Castro Valley, CA · CSLB #952283 · as of October 6, 2026
    Active · clear
11. Seal Well INC DBA Renaissance Stone Care & Waterproofing

    Castro Valley, CA · CSLB #1096214 · as of October 6, 2026
    Active · clear
12. S & C Enterprises

    Castro Valley, CA · CSLB #769424 · as of October 6, 2026
    Active · clear
13. Splash Of Class Painting And Construction

    Castro Valley, CA · CSLB #1063848 · as of October 6, 2026
    Active · clear
14. Streamline Plumbing & Drain CO

    Castro Valley, CA · CSLB #672250 · as of October 6, 2026
    Active · clear
15. Tri - Valley Engineering

    Castro Valley, CA · CSLB #1107893 · as of October 6, 2026
    Active · clear
16. Various Energy

    Castro Valley, CA · CSLB #1145723 · as of October 6, 2026
    Active · open complaint
17. A-1 Construction General Engineering INC

    Castro Valley, CA · CSLB #944217 · as of October 6, 2026
    Suspended · bond
18. DL Design Build LLC

    Castro Valley, CA · CSLB #1135206 · 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.