Construction zone traffic control contractors in Ontario, CA

2 licenses with the C-31 classification list Ontario (San Bernardino County) as their address with the state, 2 of them active. Active licenses with nothing flagged come first.

• ✓Gregg Electric IncA · C-10 · C-31 · #201042 Ontario · San Bernardino County Active
• ✓Hhs Construction LLCA · B · C-7 · C-10 +1 · #818906 Ontario · San Bernardino County Active

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