Licensed Low Voltage Systems (C-7) contractors in Livermore, CA

The California Contractors State License Board (CSLB) lists 27 Low Voltage Systems (C-7) contractors in Livermore, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

27 contractors

1. Ag Security Services INC

   Livermore, CA · CSLB #982618 · as of June 27, 2026
   Active · clear
2. Alantec Corrosion Control INC

   Livermore, CA · CSLB #1077722 · as of June 27, 2026
   Active · clear
3. All-guard Alarm Systems INC

   Livermore, CA · CSLB #398874 · as of June 27, 2026
   Active · clear
4. Ams.net LLC

   Livermore, CA · CSLB #763508 · as of June 27, 2026
   Active · clear
5. Bay Area Security Specialists INC

   Livermore, CA · CSLB #950344 · as of June 27, 2026
   Active · clear
6. Cmjn Avt

   Livermore, CA · CSLB #993859 · as of June 27, 2026
   Active · clear
7. Direct Current Systems

   Livermore, CA · CSLB #1037185 · as of June 27, 2026
   Active · clear
8. Elb US INC.

   Livermore, CA · CSLB #989518 · as of June 27, 2026
   Active · clear
9. Erickson R Communication

   Livermore, CA · CSLB #929391 · as of June 27, 2026
   Active · clear
10. Ezell's Telephone Company, E-z Tel INC

    Livermore, CA · CSLB #452985 · as of June 27, 2026
    Active · clear
11. Laser Security Systems INC

    Livermore, CA · CSLB #404142 · as of June 27, 2026
    Active · clear
12. Martins Communications

    Livermore, CA · CSLB #1103816 · as of June 27, 2026
    Active · clear
13. Menlo Technology Services

    Livermore, CA · CSLB #1123689 · as of June 27, 2026
    Active · clear
14. Mycom Communications INC

    Livermore, CA · CSLB #1028507 · as of June 27, 2026
    Active · clear
15. Network Cabling Company

    Livermore, CA · CSLB #982852 · as of June 27, 2026
    Active · clear
16. Professional Telecommunications Services INC

    Livermore, CA · CSLB #900567 · as of June 27, 2026
    Active · clear
17. Sound & Signal INC

    Livermore, CA · CSLB #494676 · as of June 27, 2026
    Active · clear
18. Space Age Satellite

    Livermore, CA · CSLB #813932 · as of June 27, 2026
    Active · clear
19. Ryan Stewart Communications

    Livermore, CA · CSLB #1023491 · as of June 27, 2026
    Active · clear
20. Structure Net INC

    Livermore, CA · CSLB #1064400 · as of June 27, 2026
    Active · clear
21. Summit A V & Automation INC

    Livermore, CA · CSLB #1055563 · as of June 27, 2026
    Active · clear
22. Telcom Structured Cabling LLC

    Livermore, CA · CSLB #986647 · as of June 27, 2026
    Active · clear
23. Three Alarm Electrical Systems INC

    Livermore, CA · CSLB #944907 · as of June 27, 2026
    Active · clear
24. Three Alarm Fire Protection

    Livermore, CA · CSLB #884552 · as of June 27, 2026
    Active · clear
25. Top Tier Communication

    Livermore, CA · CSLB #976279 · as of June 27, 2026
    Active · clear
26. Trojan Systems INC

    Livermore, CA · CSLB #637942 · as of June 27, 2026
    Active · clear
27. Uplink Cabling

    Livermore, CA · CSLB #1021668 · as of June 27, 2026
    Active · clear

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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.