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California contractor license

Castle Company

Castle Company of San Francisco holds California license 962681 (B General Building, D41). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Jan 31, 2028.

Doing business as Castillo Family Inc.

Licensed 15 years, longer than 58% of 1,421 active San Francisco general contractors.

Active

Castle Company, San Francisco

License
962681
Class
B General Building; D41
Expires
Jan 31, 2028
Bond
$25,000
Workers' comp
Exempt

CSLB file dated Oct 30, 2026

From the CSLB file dated Oct 30, 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 30, 2026. Confirm with the board: CSLB license check

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

Bond
$25,000North River Insurance Company (The), from Feb 6, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
Exemptfrom Jul 21, 2026

Who is on this license?

Officer
Marco T. CastilloSince Jan 12, 2024
Responsible managing officer, CEO and president
Marco T. Castillo GuardadoSince Jun 28, 2011

What work does this license cover?

Issued Jun 28, 2011. Reissued Jan 12, 2024.

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?

General 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 30, 2026)
  2. Contractors State License Board (CSLB)