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State files updated Oct 29, 2026
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California contractor license

Giant First Construction Inc

Giant First Construction Inc of Oak Park holds California license 853860 (B General Building). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Feb 28, 2027.

Licensed 21 years, longer than 72% of 25 active Oak Park general contractors.

Active

Giant First Construction Inc, Oak Park

License
853860
Class
B General Building
Expires
Feb 28, 2027
Bond
$25,000
Workers' comp
Exempt to Jan 1, 2027

CSLB file dated Oct 29, 2026

From the CSLB file dated Oct 29, 2026. Not a consumer report; check the board before you hire.

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

Bond
$25,000Merchants Bonding Company (Mutual), from May 25, 2024, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
ExemptState Compensation Insurance Fund, from Jan 1, 2020, to Jan 1, 2027

Who is on this license?

Officer
Leon PeretzSince Feb 1, 2005
Responsible managing officer, CEO and president
Albert A. PeretzSince Feb 1, 2005

What work does this license cover?

Issued Feb 1, 2005.

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 Oak Park businesses hold B General Building?

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 29, 2026)
  2. Contractors State License Board (CSLB)