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California contractor license
Guinn Corporation
Guinn Corporation of Bakersfield holds California license 375099 (C12 Earthwork and Paving). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires May 31, 2027.
Active
Guinn Corporation, Bakersfield
- License
- 375099
- Class
- C12 Earthwork and Paving
- Expires
- May 31, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Jun 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
- $25,000Travelers Casualty And Surety Company Of America, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredArch Insurance Company, from Jun 1, 2026, to Jun 1, 2027
Who is on this license?
- Officer
- Jeffrey D. AffonsoSince May 8, 1995
- Officer
- Timothy L. GuinnSince Apr 30, 2001
- Responsible managing officer, CEO and president
- Gary E. GuinnSince May 15, 1979
What work does this license cover?
Issued May 15, 1979.
- C12 Earthwork and Paving
What other licenses does this business hold?
- Guinn Corporation553806 · A · Active
Which other Bakersfield businesses hold C12 Earthwork and Paving?
- Cross Lonnie A Land Leveling IncLicensed since 1988
- Perez Asphalt Construction LTDLicensed since 1991
- Taylor P Backhoe Service IncLicensed since 1993
- KSL Grading & Paving IncLicensed since 2024
- International Earthwork ServicesLicensed since 2024
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)