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California contractor license
Q4 Mechanical Corporation
Q4 Mechanical Corporation of San Francisco holds California license 1006003 (C20 Warm-Air Heating, Ventilating and Air-Conditioning, C43 Sheet Metal). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Oct 31, 2027.
Active
- Workers' comp ends Nov 18, 2026 (17 days)
Q4 Mechanical Corporation, San Francisco
- Board action on file.
- License
- 1006003
- Class
- C20 Warm-Air Heating, Ventilating and Air-Conditioning; C43 Sheet Metal
- Expires
- Oct 31, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Nov 18, 2026
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?
- Nov 14, 2016 — Disciplinary bond (conditional) — Case 2014000298 — Ended Nov 24, 2019
From the CSLB file dated Nov 1, 2026. Confirm with the board. CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Travelers Casualty And Surety Company Of America, from May 1, 2024, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredState Compensation Insurance Fund, from Nov 18, 2017, to Nov 18, 2026
Who is on this license?
- Officer
- Henry O. EdenchukwuSince Oct 8, 2019
- Officer
- Derek C. EdenchukwuSince Oct 18, 2019
- Responsible managing officer, CEO and president
- Emmanuel C. DenchukwuSince Jul 30, 2015
What work does this license cover?
Issued Jul 30, 2015. Reissued Oct 29, 2015.
- C20 Warm-Air Heating, Ventilating and Air-Conditioning
- C43 Sheet Metal
Which other San Francisco businesses hold C20 Warm-Air Heating, Ventilating and Air-Conditioning?
- Z H Mechanical IncLicensed since 2014
- Associated Heating Of San Francisco IncLicensed since 2015
- Green Air Mechanical IncLicensed since 2018
- Bay Area MechanicalLicensed since 2021
- Dynamics LLCLicensed since 2023
What should you check before hiring?
What to ask before you hire
- Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
- 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)