Low-voltage contractor (C-7) in Livermore, CA
7 licenses · checked Oct 27, 2026
There are 7 Low-voltage contractor (C-7) licenses with an address of record in Livermore, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.9% of the 754 such licenses statewide; Livermore ranks #16 of 323 CA cities for this license type. They are spread across 2 ZIP codes; the most common are 94551 (4), 94550 (3). Most list Alameda County. By business type: Corporation 5, Sole Owner 2. The median first-issue year is 2018; the oldest license dates from 2016. 5 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.
What a Low-voltage contractor (C-7) license covers
Low Voltage Systems (C-7) covers communications, alarm, voice, data and similar systems up to 91 volts.
How to verify a license
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.
Low-voltage contractor (C-7) licenses in Livermore
Showing 7 of 7, A to Z. Listing order is alphabetical, not a recommendation.
- Direct Current Systems#1037185 · 94551
- Mycom Communications INC#1028507 · 94550
- Purus INC#1059782 · 94551
- Ryan Stewart Communications#1023491 · 94550
- Structure NET INC#1064400 · 94551
- Summit A V & Automation INC#1055563 · 94551
- Uplink Cabling#1021668 · 94550
Frequently asked questions
How many Low-voltage contractor (C-7) licenses are in Livermore?
7 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.9% of CA).
What does a Low-voltage contractor (C-7) license cover?
Low Voltage Systems (C-7) covers communications, alarm, voice, data and similar systems up to 91 volts.
How do I verify a Low-voltage contractor (C-7) license in Livermore?
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Use the license number shown here with the CSLB Instant License Check.
How many Livermore Low-voltage contractor (C-7) licenses expire soon?
5 of 7 have an expiration date in the next 12 months. A license that lapses must be renewed before the holder can work under it again.
Other license types in Livermore
General building contractor (33) · Electrical contractor (C-10) (13) · HVAC contractor (C-20) (9) · Landscaping contractor (C-27) (8) · Plumbing contractor (C-36) (6) · General engineering contractor (5) · Painting contractor (C-33) (4) · Tile contractor (C-54) (4) · Swimming pool contractor (C-53) (3) · Roofing contractor (C-39) (3) · Flooring contractor (C-15) (3) · Glazing contractor (C-17) (3)
All Low-voltage contractor (C-7) licenses in CA →
Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.