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California contractor license
Cornerstone Concrete Inc
Cornerstone Concrete Inc of Corona holds California license 955329 (C8 Concrete). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Dec 31, 2026.
Active
Cornerstone Concrete Inc, Corona
- License
- 955329
- Class
- C8 Concrete
- Expires
- Dec 31, 2026
- Bond
- $25,000
- Workers' comp
- Insured to Feb 1, 2027
CSLB file dated Oct 30, 2026
From the CSLB file dated Oct 30, 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 Oct 30, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Ohio Casualty Insurance Company (The), from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredPraetorian Insurance Company, from Feb 1, 2026, to Feb 1, 2027
Who is on this license?
- Responsible managing officer, CEO and president
- Matthew R. ValenteSince Dec 7, 2010
What work does this license cover?
Issued Dec 7, 2010.
- C8 Concrete
Which other Corona businesses hold C8 Concrete?
- Maddox Concrete IncLicensed since 1988
- Oc Concrete LLCLicensed since 2008
- 2s2g Contracting IncLicensed since 2009
- Segura's Pride Concrete IncLicensed since 2026
- Orbit ConcreteLicensed 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, Oct 30, 2026)
- Contractors State License Board (CSLB)