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California contractor license

Acco Engineered Systems

Acco Engineered Systems of Pasadena holds California license 120696 (A General Engineering, B General Building, C4 Boiler, Hot Water Heating and Steam Fitting, C10 Electrical, C16 Fire Protection, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing, C38 Refrigeration, C42 Sanitation System). The CSLB file dated Oct 26, 2026 lists it as active.1 It expires Dec 31, 2027.

Doing business as Acco Engineered Systems Inc.

Active

Acco Engineered Systems, Pasadena

License
120696
Class
A General Engineering; B General Building; C4 Boiler, Hot Water Heating and Steam Fitting; C10 Electrical; C16 Fire Protection; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing; C38 Refrigeration; C42 Sanitation System
Expires
Dec 31, 2027
Bond
$25,000
Workers' comp
Insured to Oct 1, 2027

CSLB file dated Oct 26, 2026

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

Issued Jul 24, 1950.

Bond
$25,000Fidelity And Deposit Company Of Maryland, from Dec 31, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredLM Insurance Corporation, from Oct 1, 2026, to Oct 1, 2027

What work does this license cover?

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 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)