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State files updated Oct 31, 2026
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California contractor license

Knox Tank Lining Inc

Knox Tank Lining Inc of Placerville holds California license 1042096 (A General Engineering, B General Building, HAZ Hazardous Substance Removal Certification). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Dec 31, 2026.

Active

Knox Tank Lining Inc, Placerville

License
1042096
Class
A General Engineering; B General Building; HAZ Hazardous Substance Removal Certification
Expires
Dec 31, 2026
Bond
$25,000
Workers' comp
Insured to Aug 30, 2027

CSLB file dated Oct 31, 2026

From the CSLB file dated Oct 31, 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 31, 2026. Confirm with the board: CSLB license check

What bond, insurance and workers' comp are on file?

Bond
$25,000American Contractors Indemnity Company, from Dec 4, 2024, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredState Compensation Insurance Fund, from Aug 30, 2024, to Aug 30, 2027

Who is on this license?

Officer
Samantha C. AlvesSince Dec 4, 2024
Responsible managing officer, CEO and president
Adolf S. AlvesSince Jul 20, 2018

What work does this license cover?

Issued Jul 20, 2018. Inactive Jul 20, 2018 to Mar 10, 2022. Reissued Dec 4, 2024.

Which other Placerville businesses hold A General Engineering?

California general contractors

What should you check before hiring?

What to ask before you hire

  1. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. 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.
  5. 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

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. 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.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 31, 2026)
  2. Contractors State License Board (CSLB)