Low voltage systems contractors in San Francisco, CA

59 licenses with the C-7 classification list San Francisco (San Francisco County) as their address with the state, 58 of them active. Active licenses with nothing flagged come first.

• ✓Ron Thorn Construction IncB · C-7 · #942822 San Francisco · San Francisco County Active
• ✓Sequoia Communications IncC-7 · #1136620 San Francisco · San Francisco County Active
• ✓Sf Security Pro Inc Dba Sf Security Camera ProC-7 · #1091642 San Francisco · San Francisco County Active
• ✓Specialty CommunicationsC-7 · #548176 San Francisco · San Francisco County Active
• ✓Tech Hospitality IncC-7 · #1057457 San Francisco · San Francisco County Active
• ✓Techinsf Consulting LLCC-7 · #1135315 San Francisco · San Francisco County Active
• ✓Telbon Communications IncC-7 · #755096 San Francisco · San Francisco County Active
• ✓Telwork Solutions IncC-7 · #865476 San Francisco · San Francisco County Active
• ✓Tony'S Windows and Glass IncC-7 · C-17 · #352757 San Francisco · San Francisco County Active
• ✓Twilight Security & Investigation IncC-7 · #463356 San Francisco · San Francisco County Active
• ✓United California Access & SecurityB · C-7 · C-10 · C-13 +3 · #916641 San Francisco · San Francisco County Active
• ✓United California Glass & DoorB · C-7 · C-10 · C-13 +5 · #628422 San Francisco · San Francisco County Active
• ✓Vue Technology CompanyC-7 · #1156859 San Francisco · San Francisco County Active
• ✓Warman SecurityC-7 · C-61/D-16 · #470224 San Francisco · San Francisco County Active
• ✓Wd Fire Protection Group JvB · C-7 · C-10 · C-36 · #1160294 San Francisco · San Francisco County Active
• ✓Wired Loss PreventionC-7 · #955887 San Francisco · San Francisco County Active
• ✓Yin Yi ZengB · C-7 · C-10 · C-36 · #1129922 San Francisco · San Francisco County Active
• !First Tech Networks IncC-7 · #1100381 San Francisco · San Francisco County Active Workers' comp suspension pending
• !United California Building AutomationB · C-7 · C-10 · C-13 +2 · #962341 San Francisco · San Francisco County Suspended: bond lapsed

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