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California contractor license
Williams Ron Certified Roof & Roof Inspection LLC
Williams Ron Certified Roof & Roof Inspection LLC of Stockton holds California license 628619 (C39 Roofing). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Feb 28, 2027.
Licensed 35 years, longer than 80% of 25 active Stockton roofing contractors.
Active
Williams Ron Certified Roof & Roof Inspection LLC, Stockton
- License
- 628619
- Class
- C39 Roofing
- Expires
- Feb 28, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Sep 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
- $25,000Philadelphia Indemnity Insurance Company, from Feb 28, 2026, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredState Compensation Insurance Fund, from Sep 1, 2026, to Sep 1, 2027
Who is on this license?
- Responsible managing member
- Ron L. WilliamsSince Sep 14, 1991
- LLC member
- Cesar E. GomezSince Feb 28, 2019
- LLC manager
- Lisa M. WilliamsSince Feb 28, 2019
What work does this license cover?
Issued Sep 14, 1991. Inactive Sep 30, 1998 to Jun 9, 2004. Reissued Feb 28, 2019.
Which other Stockton businesses hold C39 Roofing?
- Noble H Brown Roofing Co IncLicensed since 1987
- All Weather Roofing Company IncLicensed since 1997
- Manteca Roofing IncLicensed since 2011
- Phoenix Roofing Co IncLicensed since 2014
- Rocha's Roofing IncLicensed 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)