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California contractor license
O'Connor Roofing Construction Inc
O'Connor Roofing Construction Inc of Spring Valley holds California license 520956 (B General Building, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C39 Roofing). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Sep 30, 2027.
Licensed 38 years, longer than 90% of 7,757 active California HVAC contractors.
Active
O'Connor Roofing Construction Inc, Spring Valley
- Workers' comp has a cancellation date on file: Nov 3, 2026.
- License
- 520956
- Class
- B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C39 Roofing
- Expires
- Sep 30, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Apr 2, 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
- $25,000Philadelphia Indemnity Insurance Company, from Jan 17, 2025, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredState Compensation Insurance Fund, from Apr 2, 2026, to Apr 2, 2027, cancel date Nov 3, 2026
Who is on this license?
- Officer
- Mark B. O'ConnorSince Sep 1, 2011
- Officer
- Michael R. O'ConnorSince Sep 1, 2011
- Officer
- Sean M. O'ConnorSince Sep 1, 2011
- Responsible managing officer, CEO and president
- Valerie J. O'ConnorSince Sep 1, 2011
What work does this license cover?
Issued Nov 18, 1987. Reissued Sep 1, 2011.
A cancellation date is on file for a bond or policy. Ask for a current certificate before work starts.
Which other Spring Valley businesses hold B General Building?
- Brown M C Construction & DevelopmentLicensed since 1980
- Hansen Glen Construction IncLicensed since 1984
- The Avalon CompanyLicensed since 1988
- Allcare Design / Build IncLicensed since 1989
- Pacific Patio IncLicensed since 1989
California HVAC contractorsGeneral Contractors in Spring ValleyCalifornia general contractors
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)