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California contractor license

One Construction LLC The

One Construction LLC The of South San Francisco holds California license 971849 (B General Building, C54 Ceramic and Mosaic Tile). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Aug 31, 2027.

Licensed 14 years, longer than 55% of 116 active South San Francisco general contractors.

Active

One Construction LLC The, South San Francisco

License
971849
Class
B General Building; C54 Ceramic and Mosaic Tile
Expires
Aug 31, 2027
Bond
$25,000
Workers' comp
Insured to Apr 15, 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 Aug 6, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredState Compensation Insurance Fund, from Apr 15, 2021, to Apr 15, 2027

Who is on this license?

Officer
Colleen H. WanSince Apr 5, 2012
Responsible managing manager
Tony S. WanSince Apr 5, 2012

What work does this license cover?

Issued Apr 5, 2012. Reissued Aug 6, 2021.

Which other South San Francisco businesses hold B General Building?

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