Structural steel contractors in Castro Valley, CA

2 licenses with the C-51 classification list Castro Valley (Alameda County) as their address with the state, 2 of them active. Active licenses with nothing flagged come first.

• ✓B&b Custom Ornamental CraftC-23 · C-51 · #1096542 Castro Valley · Alameda County Active
• ✓Northern Structural IncC-51 · #897836 Castro Valley · Alameda County Active

Source: CSLB license file, Nov 8, 2026All trades in Castro Valley