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Best Licensed Low Voltage Contractors in Sonora, CA

3 low voltage companies registered in Sonora hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 3 companies registered in Sonora. 3 passed license verification. All 3 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. 1.The W C S L Corporation

    ✓ CSLB License #844761 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2004
    Phone
    (209) 522-4896

  2. 2.Custom Connections Av Inc.

    ✓ CSLB License #785180 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2000
    Phone
    (831) 251-3200

  3. 3.Atc Audio Video Productions

    ✓ CSLB License #1078081 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2021
    Phone
    (209) 605-7493

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
The W C S L Corporation#844761On file2004
Custom Connections Av Inc.#785180Expired on file2000
Atc Audio Video Productions#1078081Expired on file2021

Tuolumne 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: 5 active C-7 low voltage systems licenses in Tuolumne County, 3 of them registered in Sonora. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Sonora license has been held 22 years, and the longest-standing one dates to 2000. 1 of Sonora's 3 licenses (33.3%) carries 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: 5 of the county's 5 licenses carry the same $25,000 bond California sets by statute. 1 county license reaches its 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 Sonora: common questions

How many licensed low voltage contractors are there in Sonora?

3 active C-7 low voltage systems licenses are registered in Sonora, out of 5 across Tuolumne County. 3 Sonora-registered companies passed our license verification, and all 3 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. 3 active C-7 low voltage systems licenses are registered in Sonora and 5 across Tuolumne County, the longest-standing issued in 2000. 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 1 of Sonora's 3 currently carry. 1 Tuolumne County license expires within 90 days.

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