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California contractor license
Ok Heating And Air Conditioning Inc
Ok Heating And Air Conditioning Inc of Livermore holds California license 332447 (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 Apr 30, 2027.
Licensed 49 years, longer than 95% of 44 active Livermore HVAC contractors.
Active
Ok Heating And Air Conditioning Inc, Livermore
- License
- 332447
- Class
- C20 Warm-Air Heating, Ventilating and Air-Conditioning; C43 Sheet Metal
- Expires
- Apr 30, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Oct 1, 2027
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
- $25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredEverest Premier Insurance Company, from Oct 1, 2026, to Oct 1, 2027
Who is on this license?
- Officer
- Robert J. KathainSince Apr 28, 2017
- Responsible managing officer, CEO and president
- Robert KathainSince Mar 29, 2005
What work does this license cover?
Issued Mar 7, 1977. Reissued Apr 28, 2017.
- C20 Warm-Air Heating, Ventilating and Air-Conditioning
- C43 Sheet Metal
Which other Livermore businesses hold C20 Warm-Air Heating, Ventilating and Air-Conditioning?
- Delcon Heating And Air ConditioningLicensed since 1986
- Alpine Mechanical Service Company IncLicensed since 1989
- Signal Heating & Air ConditioningLicensed since 1992
- RH Mechanical LLCLicensed since 2026
- Air Solutions LLCLicensed since 2026
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)