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California contractor license
Renum Low Voltage Systems
Renum Low Voltage Systems of El Cajon holds California license 1131181 (C7 Low Voltage Systems). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Jan 31, 2027.
Doing business as Renum Systems.
Active
Renum Low Voltage Systems, El Cajon
- License
- 1131181
- Class
- C7 Low Voltage Systems
- Expires
- Jan 31, 2027
- Bond
- $25,000
- Workers' comp
- Exempt
CSLB file dated Nov 1, 2026
From the CSLB file dated Nov 1, 2026. Not a consumer report; check the board before you hire.
Has the board taken action on this license?
None in the CSLB file dated Nov 1, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Western Surety Company, from Dec 20, 2024, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- Exemptfrom Dec 20, 2024
Who is on this license?
- Responsible managing officer, CEO and president
- Ian SsrkoklySince Jan 2, 2025
What work does this license cover?
Issued Jan 2, 2025.
- C7 Low Voltage Systems
The workers' comp exemption means the holder told the CSLB it has no employees. If a crew works on your job, ask for a workers' comp certificate.
Which other El Cajon businesses hold C7 Low Voltage Systems?
- Enhanced Voice & Data Networks IncLicensed since 2006
- Sd-IsLicensed since 2016
- Teldata Enterprise NetworksLicensed since 2021
- Matrix Computing Technology IncLicensed since 2024
- JLB Communications IncLicensed since 2025
What should you check before hiring?
What to ask before you hire
- Get the license number in writing. The name on the license should match the name on your contract and invoice.
- Check the class covers the job. A license for one trade doesn't cover another. California license classes
- Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
- Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
- Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.
If the license is lapsed
- Don't sign or pay a deposit until the CSLB shows the license active again.
- Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
- Check another contractor. California license lookup
Sources
- CSLB License Master (cslb.ca.gov, Nov 1, 2026)
- Contractors State License Board (CSLB)