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California contractor license
Coltrane Low Voltage Systems
Coltrane Low Voltage Systems of St Louis holds California license 1115509 (C7 Low Voltage Systems). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Jan 31, 2028.
Doing business as Coltrane Systems LLC.
Active
Coltrane Low Voltage Systems, St Louis
- License
- 1115509
- Class
- C7 Low Voltage Systems
- Expires
- Jan 31, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Jan 1, 2027
CSLB file dated Oct 29, 2026
From the CSLB file dated Oct 29, 2026. Not a consumer report; check the board before you hire.
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Merchants Bonding Company (Mutual), from Dec 19, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredZurich American Insurance Company, from Jan 1, 2026, to Jan 1, 2027
Who is on this license?
- Responsible managing employee
- Matthew G. MartinezSince Jul 16, 2026
- LLC member
- Adam M. DerlethSince Jan 26, 2024
- LLC member
- Jeffrey R. BessSince Jan 26, 2024
- LLC member
- Rickie L. ColtraneSince Jan 26, 2024
What work does this license cover?
Issued Jan 26, 2024.
- C7 Low Voltage Systems
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, Oct 29, 2026)
- Contractors State License Board (CSLB)