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State files updated Oct 31, 2026
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California contractor license

A A P T Construction Co

A A P T Construction Co of San Francisco holds California license 949973 (B General Building, C10 Electrical). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Jul 31, 2028.

Licensed 16 years, longer than 52% of 326 active San Francisco electrical contractors.

Active

A A P T Construction Co, San Francisco

License
949973
Class
B General Building; C10 Electrical
Expires
Jul 31, 2028
Bond
$25,000
Workers' comp
Exempt

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 Jan 12, 2024, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
Exemptfrom Aug 5, 2026

Who is on this license?

Responsible managing officer
Chan C. ChiangSince Jul 15, 2010
Responsible managing officer, CEO and president
Stanley F. ChiangSince Jul 15, 2010

What work does this license cover?

Issued Jul 15, 2010.

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 San Francisco businesses hold B General Building?

Electrical Contractors in San FranciscoCalifornia electrical contractorsGeneral Contractors in San FranciscoCalifornia 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)