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Jobsite Stud Welding Inc
Jobsite Stud Welding Inc of Chino holds California license 839393 (C51 Structural Steel). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires Feb 29, 2028.
Active
Jobsite Stud Welding Inc, Chino
- License
- 839393
- Class
- C51 Structural Steel
- Expires
- Feb 29, 2028
- Bond
- $25,000
- Workers' comp
- Insured to Jan 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
- $25,000American States Insurance Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredBerkshire Hathaway Homestate Insurance Company, from Jan 1, 2025, to Jan 1, 2027
Who is on this license?
- CEO and president
- Jerry E. KoskiSince May 27, 2004
- Responsible managing employee
- Robert W. ButcherSince May 27, 2004
What work does this license cover?
Issued May 27, 2004. Inactive May 27, 2004 to Feb 16, 2010.
- C51 Structural Steel
Which other Chino businesses hold C51 Structural Steel?
- Infinity Iron IncLicensed since 2004
- Ram Structural Steel IncLicensed since 2007
- West Coast Erectors Co,incLicensed since 2015
- B P Iron IncLicensed since 2020
- Aj Steel Erector 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)