Best Licensed Low Voltage Contractors in Grass Valley, CA
11 low voltage companies registered in Grass Valley 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.
- 27 active C-7 low voltage systems licenses in Nevada County; 12 registered in Grass Valley
- 5 of Grass Valley's 12 licenses (41.7%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Grass Valley: 23 years
- Longest Grass Valley licensure: since 1980
- 4 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1980
- Phone
- (530) 277-0275
- Verified
- August 17, 2026
- Licensed since
- 1986
- Phone
- (530) 272-4755
- Verified
- August 17, 2026
- Licensed since
- 1989
- Phone
- (530) 273-5166
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (530) 271-0332
- Verified
- August 17, 2026
- Licensed since
- 2009
- Phone
- (530) 559-0347
- Verified
- August 17, 2026
- Licensed since
- 2001
- Phone
- (916) 718-3235
- Verified
- August 17, 2026
- Licensed since
- 2003
- Phone
- (530) 913-1654
- Verified
- August 17, 2026
- Licensed since
- 2005
- Phone
- (530) 277-0989
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Klus Konstruction | #388427 | On file | 1980 |
| Nitram Inc. DBA Everguard Systems | #499271 | On file | 1986 |
| Beam Security Systems Inc. | #555161 | Exempt or none on file | 1989 |
| Absolute Communication Solutions | #812970 | On file | 2002 |
| Fiber Works Communications Inc. | #932282 | Exempt or none on file | 2009 |
| Danckert Communication Co | #792731 | Exempt or none on file | 2001 |
Nevada 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: 27 active C-7 low voltage systems licenses in Nevada County, 12 of them registered in Grass Valley. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Grass Valley license has been held 23 years, and the longest-standing one dates to 1980. 5 of Grass Valley's 12 licenses (41.7%) 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: 27 of the county's 27 licenses carry the same $25,000 bond California sets by statute. 4 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 Grass Valley: common questions
How many licensed low voltage contractors are there in Grass Valley?
12 active C-7 low voltage systems licenses are registered in Grass Valley, out of 27 across Nevada County. 11 Grass Valley-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. 12 active C-7 low voltage systems licenses are registered in Grass Valley and 27 across Nevada County, the longest-standing issued in 1980. 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 5 of Grass Valley's 12 currently carry. 4 Nevada County licenses expire within 90 days.
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