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Best Licensed Low Voltage Contractors in Martinez, CA

5 low voltage companies registered in Martinez hold current CSLB licenses, verified against official records as of August 17, 2026. All 5 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 5 companies registered in Martinez. 5 passed license verification. All 5 are listed below. Our methodology

We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.

  1. Verified
    August 17, 2026
    Licensed since
    1998
    Phone
    (510) 785-5500
  2. Verified
    August 17, 2026
    Licensed since
    2002
    Phone
    (925) 335-0800
  3. Verified
    August 17, 2026
    Licensed since
    2005
    Phone
    (925) 348-4293
  4. Verified
    August 17, 2026
    Licensed since
    2025
    Phone
    (855) 554-3357
  5. Verified
    August 17, 2026
    Licensed since
    2011
    Phone
    (888) 944-7274

Compare the top 5 at a glance

CompanyLicenseWorkers' compLicensed since
Marelich Mechanical Co Inc.#752638On file1998
Peterson Communications Group Inc.#805838On file2002
Will Huie DBA Trilogy Home Theater#852903On file2005
55geeks#1133496On file2025
A S I Systems Inc.#958446Exempt or none on file2011

Contra Costa County low voltage licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 124 active C-7 low voltage systems licenses in Contra Costa County, 5 of them registered in Martinez. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Martinez license has been held 21 years, and the longest-standing one dates to 1998. 4 of Martinez's 5 licenses (80.0%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 124 of the county's 124 licenses carry the same $25,000 bond California sets by statute. 8 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.

Low Voltage Contractors in Martinez: common questions

How many licensed low voltage contractors are there in Martinez?

5 active C-7 low voltage systems licenses are registered in Martinez, out of 124 across Contra Costa County. 5 Martinez-registered companies passed our license verification, and all 5 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license low voltage contractors?

Yes. California licenses contractors by classification, and C-7 is the CSLB classification that authorises this work. 5 active C-7 low voltage systems licenses are registered in Martinez and 124 across Contra Costa County, the longest-standing issued in 1998. Only CLEAR, unexpired licenses appear here.

How do I check a low voltage contractor's license in California?

Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 4 of Martinez's 5 currently carry. 8 Contra Costa County licenses expire within 90 days.

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