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Best Licensed Low Voltage Contractors in Signal Hill, CA

4 low voltage companies registered in Signal Hill hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 4 companies registered in Signal Hill. 4 passed license verification. All 4 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.C & H Custom Security Systems Inc.

    ✓ CSLB License #629044 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1991
    Phone
    (562) 424-4600

  2. 2.L A King Co

    ✓ CSLB License #701204 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1995
    Phone
    (562) 424-0979

  3. 3.Transcom Telecommunications

    ✓ CSLB License #847262 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2004
    Phone
    (562) 630-1200

  4. 4.Rms Construction

    ✓ CSLB License #900304 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2007
    Phone
    (855) 760-1822

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
C & H Custom Security Systems Inc.#629044On file1991
L A King Co#701204On file1995
Transcom Telecommunications#847262On file2004
Rms Construction#900304On file2007

Los Angeles 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: 989 active C-7 low voltage systems licenses in Los Angeles County, 4 of them registered in Signal Hill. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Signal Hill license has been held 21 years, and the longest-standing one dates to 1991. 4 of Signal Hill's 4 licenses (100.0%) 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: 987 of the county's 989 licenses carry the same $25,000 bond California sets by statute. 93 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 Signal Hill: common questions

How many licensed low voltage contractors are there in Signal Hill?

4 active C-7 low voltage systems licenses are registered in Signal Hill, out of 989 across Los Angeles County. 4 Signal Hill-registered companies passed our license verification, and all 4 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. 4 active C-7 low voltage systems licenses are registered in Signal Hill and 989 across Los Angeles County, the longest-standing issued in 1991. 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 Signal Hill's 4 currently carry. 93 Los Angeles County licenses expire within 90 days.

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