Best Licensed Low Voltage Contractors in El Cajon, CA
28 low voltage companies registered in El Cajon 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.
- 352 active C-7 low voltage systems licenses in San Diego County; 30 registered in El Cajon
- 14 of El Cajon's 30 licenses (46.7%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in El Cajon: 12 years
- Longest El Cajon licensure: since 1971
- 34 county licenses reach their expiration date within 90 days
We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.
- Verified
- August 17, 2026
- Licensed since
- 1971
- Phone
- (619) 442-9686
- Verified
- August 17, 2026
- Licensed since
- 1984
- Phone
- (619) 447-7332
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (619) 596-9950
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (619) 442-9595
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (619) 441-7400
- Verified
- August 17, 2026
- Licensed since
- 2003
- Phone
- (619) 667-1200
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (858) 635-6504
- Verified
- August 17, 2026
- Licensed since
- 2007
- Phone
- (619) 596-1287
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Astro Mechanical Contractors Inc. | #267392 | On file | 1971 |
| Lynn's Locksmith Service | #465109 | On file | 1984 |
| Sciens Standard Electronics Division | #590876 | On file | 1990 |
| The Watchlight Corporation | #594919 | On file | 1990 |
| House Of Automation Inc. | #605370 | On file | 1990 |
| Emcom Services Inc. | #820216 | On file | 2003 |
San Diego 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: 352 active C-7 low voltage systems licenses in San Diego County, 30 of them registered in El Cajon. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median El Cajon license has been held 12 years, and the longest-standing one dates to 1971. 14 of El Cajon's 30 licenses (46.7%) 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: 352 of the county's 352 licenses carry the same $25,000 bond California sets by statute. 34 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 El Cajon: common questions
How many licensed low voltage contractors are there in El Cajon?
30 active C-7 low voltage systems licenses are registered in El Cajon, out of 352 across San Diego County. 28 El Cajon-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. 30 active C-7 low voltage systems licenses are registered in El Cajon and 352 across San Diego County, the longest-standing issued in 1971. 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 14 of El Cajon's 30 currently carry. 34 San Diego County licenses expire within 90 days.
Other services in El Cajon
- Plumbers in El Cajon, CA
- HVAC Contractors in El Cajon, CA
- Electricians in El Cajon, CA
- Roofers in El Cajon, CA
- Landscaping Contractors in El Cajon, CA
- Painters in El Cajon, CA
- Pool Contractors in El Cajon, CA
- Concrete Contractors in El Cajon, CA
- Tile Contractors in El Cajon, CA
- Flooring Contractors in El Cajon, CA
- Drywall Contractors in El Cajon, CA
- Glass & Glazing Contractors in El Cajon, CA
- Masonry Contractors in El Cajon, CA
- Fence Contractors in El Cajon, CA
- Door & Gate Contractors in El Cajon, CA
- Cabinet & Carpentry Contractors in El Cajon, CA
- Paving Contractors in El Cajon, CA
- Stucco & Plastering Contractors in El Cajon, CA
- Insulation Contractors in El Cajon, CA
- Solar Contractors in El Cajon, CA
- Tree Service Contractors in El Cajon, CA
Low Voltage Contractors in nearby cities
- Low Voltage Contractors in Santee, CA
- Low Voltage Contractors in La Mesa, CA
- Low Voltage Contractors in Spring Valley, CA
- Low Voltage Contractors in Lakeside, CA
- Low Voltage Contractors in Jamul, CA
- Low Voltage Contractors in San Diego, CA
- Low Voltage Contractors in Chula Vista, CA
- Low Voltage Contractors in Poway, CA