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California contractor license

Koolco Mechanical Inc

Koolco Mechanical Inc of Oxnard holds California license 555151 (C10 Electrical, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing, C38 Refrigeration). The CSLB file dated Oct 26, 2026 lists it as active.1 It expires Dec 31, 2026.

Licensed 37 years, longer than 87% of 31 active Oxnard electrical contractors.

Active

Koolco Mechanical Inc, Oxnard

License
555151
Class
C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing; C38 Refrigeration
Expires
Dec 31, 2026
Bond
$25,000
Workers' comp
Insured to Jan 1, 2027

CSLB file dated Oct 26, 2026

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

Bond
$25,000Ohio Casualty Insurance Company (The), from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from Jan 1, 2026, to Jan 1, 2027

What work does this license cover?

Issued Jan 23, 1989.

Which other Oxnard businesses hold C10 Electrical?

California electrical contractorsCalifornia plumbing 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 26, 2026)
  2. Contractors State License Board (CSLB)