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California contractor license
Kornerstone Builders Inc
Kornerstone Builders Inc of Yuba City holds California license 1158758 (B General Building). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Jul 31, 2028.
Active
Kornerstone Builders Inc, Yuba City
- License
- 1158758
- Class
- B General Building
- Expires
- Jul 31, 2028
- Bond
- $25,000
- Workers' comp
- Exempt
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
- $25,000American Contractors Indemnity Company, from Jul 15, 2026, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- Exemptfrom Jun 20, 2026
Who is on this license?
- Responsible managing officer, CEO and president
- Karrie A. TurnerSince Jul 28, 2026
What work does this license cover?
Issued Jul 28, 2026.
The workers' comp exemption means the holder told the CSLB it has no employees. If a crew works on your job, ask for a workers' comp certificate.
Which other Yuba City businesses hold B General Building?
- Sierra Building Supply & Contractors IncLicensed since 1976
- TridentLicensed since 1977
- Aztec Developers IncLicensed since 1978
- Cal North Construction LLCLicensed since 2025
- Madrid's Construction 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, Oct 30, 2026)
- Contractors State License Board (CSLB)