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Best Licensed Low Voltage Contractors in Ontario, CA

34 low voltage companies registered in Ontario hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.

How we chose: We identified 34 companies registered in Ontario. 34 passed license verification. The 8 below are the top-ranked of those. 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.Comtract Communications Inc.

    ✓ CSLB License #598482 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1990
    Phone
    (858) 200-5150

  2. 2.Ics Intelesys Inc.

    ✓ CSLB License #729063 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1996
    Phone
    (909) 305-1500

  3. 3.Alliance Communication Services Inc.

    ✓ CSLB License #746796 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1998
    Phone
    (909) 627-6140

  4. 4.Telecomp Enterprises Inc.

    ✓ CSLB License #766536 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1999
    Phone
    (562) 804-9828

  5. 5.Hhs Construction LLC

    ✓ CSLB License #818906 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2003
    Phone
    (303) 325-2697

  6. 6.Primebore Directional Boring Corp

    ✓ CSLB License #847499 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2004
    Phone
    (909) 821-4643

  7. 7.Wirenet Communications Inc.

    ✓ CSLB License #865478 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2005
    Phone
    (909) 986-3290

  8. 8.Plug & Play Home Tech

    ✓ CSLB License #886283 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2006
    Phone
    (951) 295-2984

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Comtract Communications Inc.#598482On file1990
Ics Intelesys Inc.#729063On file1996
Alliance Communication Services Inc.#746796On file1998
Telecomp Enterprises Inc.#766536On file1999
Hhs Construction LLC#818906On file2003
Primebore Directional Boring Corp#847499On file2004

San Bernardino 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: 220 active C-7 low voltage systems licenses in San Bernardino County, 36 of them registered in Ontario. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Ontario license has been held 12 years, and the longest-standing one dates to 1984. 23 of Ontario's 36 licenses (63.9%) 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: 220 of the county's 220 licenses carry the same $25,000 bond California sets by statute. 18 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 Ontario: common questions

How many licensed low voltage contractors are there in Ontario?

36 active C-7 low voltage systems licenses are registered in Ontario, out of 220 across San Bernardino County. 34 Ontario-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. 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. 36 active C-7 low voltage systems licenses are registered in Ontario and 220 across San Bernardino County, the longest-standing issued in 1984. 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 23 of Ontario's 36 currently carry. 18 San Bernardino County licenses expire within 90 days.

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