Best Licensed Low Voltage Contractors in Diamond Bar, CA
8 low voltage companies registered in Diamond Bar hold current CSLB licenses, verified against official records as of August 17, 2026. All 8 are listed below, ordered by workers' compensation cover and years licensed.
- 989 active C-7 low voltage systems licenses in Los Angeles County; 8 registered in Diamond Bar
- 2 of Diamond Bar's 8 licenses (25.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Diamond Bar: 10 years
- Longest Diamond Bar licensure: since 1987
- 93 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (909) 348-2542
- Verified
- August 17, 2026
- Licensed since
- 2011
- Phone
- (909) 957-9201
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (818) 486-0907
- Verified
- August 17, 2026
- Licensed since
- 2013
- Phone
- (714) 227-6057
- Verified
- August 17, 2026
- Licensed since
- 2016
- Phone
- (626) 347-0390
- Verified
- August 17, 2026
- Licensed since
- 2019
- Phone
- (213) 219-9950
- Verified
- August 17, 2026
- Licensed since
- 2019
- Phone
- (909) 472-5207
8.K3gs LLC
- Verified
- August 17, 2026
- Licensed since
- 2020
- Phone
- (626) 623-9405
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Place Construction & Development Inc. | #515653 | On file | 1987 |
| A And L Systems Solutions | #966840 | On file | 2011 |
| Xpertcom Solutions Inc. | #844669 | Exempt or none on file | 2004 |
| 3 T Media Inc. | #987903 | Exempt or none on file | 2013 |
| Ion Security Systems | #1015479 | Exempt or none on file | 2016 |
| Dux Technology Consulting Inc. | #1050592 | Exempt or none on file | 2019 |
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, 8 of them registered in Diamond Bar. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Diamond Bar license has been held 10 years, and the longest-standing one dates to 1987. 2 of Diamond Bar's 8 licenses (25.0%) 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 Diamond Bar: common questions
How many licensed low voltage contractors are there in Diamond Bar?
8 active C-7 low voltage systems licenses are registered in Diamond Bar, out of 989 across Los Angeles County. 8 Diamond Bar-registered companies passed our license verification, and all 8 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. 8 active C-7 low voltage systems licenses are registered in Diamond Bar and 989 across Los Angeles County, the longest-standing issued in 1987. 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 2 of Diamond Bar's 8 currently carry. 93 Los Angeles County licenses expire within 90 days.
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