Licensed General Building (B) contractors in Castro Valley, CA

The California Contractors State License Board (CSLB) lists 228 General Building (B) contractors in Castro Valley, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

Showing 181–228 of 228 contractors

1. R S V P Development & Construction

   Castro Valley, CA · CSLB #660902 · as of June 27, 2026
   Active · clear
2. Mark Schantz

   Castro Valley, CA · CSLB #689172 · as of June 27, 2026
   Active · clear
3. Bill Siem Construction

   Castro Valley, CA · CSLB #866184 · as of June 27, 2026
   Active · clear
4. Sigma HVAC & Electric INC

   Castro Valley, CA · CSLB #1128583 · as of June 27, 2026
   Active · clear
5. Silva James P Construction INC

   Castro Valley, CA · CSLB #530036 · as of June 27, 2026
   Active · clear
6. Bruce Sin Construction

   Castro Valley, CA · CSLB #813392 · as of June 27, 2026
   Active · clear
7. Situ Construction INC

   Castro Valley, CA · CSLB #987813 · as of June 27, 2026
   Active · clear
8. SLB Construction INC

   Castro Valley, CA · CSLB #575742 · as of June 27, 2026
   Active · clear
9. Michael Gareth Smith

   Castro Valley, CA · CSLB #1018172 · as of June 27, 2026
   Active · clear
10. Statewide Systems INC

    Castro Valley, CA · CSLB #962468 · as of June 27, 2026
    Active · clear
11. Su Construction Studio INC

    Castro Valley, CA · CSLB #1083081 · as of June 27, 2026
    Active · clear
12. Summit Fireplace & Grills

    Castro Valley, CA · CSLB #943469 · as of June 27, 2026
    Active · clear
13. Sunday Builders INC

    Castro Valley, CA · CSLB #1112165 · as of June 27, 2026
    Active · clear
14. Sun Kee Construction

    Castro Valley, CA · CSLB #639436 · as of June 27, 2026
    Active · clear
15. Syufy Builders

    Castro Valley, CA · CSLB #530377 · as of June 27, 2026
    Active · clear
16. Ten Nine Construction

    Castro Valley, CA · CSLB #1142427 · as of June 27, 2026
    Active · clear
17. R E Timm Construction INC

    Castro Valley, CA · CSLB #1019087 · as of June 27, 2026
    Active · clear
18. Top Tier Building Services INC

    Castro Valley, CA · CSLB #1146790 · as of June 27, 2026
    Active · clear
19. Transformation Construction & Design INC

    Castro Valley, CA · CSLB #1109820 · as of June 27, 2026
    Active · clear
20. U-land Construction INC

    Castro Valley, CA · CSLB #986749 · as of June 27, 2026
    Active · clear
21. Urban Ascent Construction LLC

    Castro Valley, CA · CSLB #1139582 · as of June 27, 2026
    Active · clear
22. Varasteh Construction

    Castro Valley, CA · CSLB #616876 · as of June 27, 2026
    Active · clear
23. Victory Construction INC

    Castro Valley, CA · CSLB #735323 · as of June 27, 2026
    Active · clear
24. Viking Construction & Handyman Services

    Castro Valley, CA · CSLB #1100686 · as of June 27, 2026
    Active · clear
25. Villa Alta Construction INC

    Castro Valley, CA · CSLB #1155358 · as of June 27, 2026
    Active · clear
26. Villegas Construction Services

    Castro Valley, CA · CSLB #902833 · as of June 27, 2026
    Active · clear
27. Andrew Vincent Builder

    Castro Valley, CA · CSLB #1130039 · as of June 27, 2026
    Active · clear
28. S Walt Construction

    Castro Valley, CA · CSLB #930552 · as of June 27, 2026
    Active · clear
29. Water Heater Company

    Castro Valley, CA · CSLB #987574 · as of June 27, 2026
    Active · clear
30. Wayne's Construction CO

    Castro Valley, CA · CSLB #986343 · as of June 27, 2026
    Active · clear
31. Welch Construction

    Castro Valley, CA · CSLB #605159 · as of June 27, 2026
    Active · clear
32. Westeren Construction INC

    Castro Valley, CA · CSLB #792148 · as of June 27, 2026
    Active · clear
33. Westeren Construction LLC

    Castro Valley, CA · CSLB #631458 · as of June 27, 2026
    Active · clear
34. West Side Development INC

    Castro Valley, CA · CSLB #1061831 · as of June 27, 2026
    Active · clear
35. Wilder Ventures

    Castro Valley, CA · CSLB #1056116 · as of June 27, 2026
    Active · clear
36. Wilson Construction

    Castro Valley, CA · CSLB #766739 · as of June 27, 2026
    Active · clear
37. Wing's Roofing INC

    Castro Valley, CA · CSLB #698113 · as of June 27, 2026
    Active · clear
38. Woodberry Development Company

    Castro Valley, CA · CSLB #600258 · as of June 27, 2026
    Active · clear
39. Wu Construction

    Castro Valley, CA · CSLB #863143 · as of June 27, 2026
    Active · clear
40. Xotek INC

    Castro Valley, CA · CSLB #700664 · as of June 27, 2026
    Active · clear
41. Han Lin Xu

    Castro Valley, CA · CSLB #903834 · as of June 27, 2026
    Active · clear
42. Luis W Yan

    Castro Valley, CA · CSLB #939755 · as of June 27, 2026
    Active · clear
43. Wilson Young

    Castro Valley, CA · CSLB #623819 · as of June 27, 2026
    Active · clear
44. Zifu Property Construction

    Castro Valley, CA · CSLB #1126513 · as of June 27, 2026
    Active · clear
45. Zolie Builders INC

    Castro Valley, CA · CSLB #1107148 · as of June 27, 2026
    Active · clear
46. F B Development

    Castro Valley, CA · CSLB #859640 · as of June 27, 2026
    Suspended · bond
47. Hector's Construction Company INC

    Castro Valley, CA · CSLB #871808 · as of June 27, 2026
    Suspended
48. Vcone INC

    Castro Valley, CA · CSLB #1127365 · 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.