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California contractor license

D C Lock & Security Inc

D C Lock & Security Inc of Daly City holds California license 570333 (D16). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Jul 31, 2028.

Active

  • Workers' comp ends Dec 23, 2026 (55 days)

D C Lock & Security Inc, Daly City

License
570333
Class
D16
Expires
Jul 31, 2028
Bond
$25,000
Workers' comp
Insured to Dec 23, 2026

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
$25,000Western Surety Company, from Jul 21, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from Dec 23, 2025, to Dec 23, 2026

Who is on this license?

Officer
Jay C. LarsonSince Jul 21, 2026
Responsible managing officer
Michael P. SinkSince Jun 9, 1989
CEO and president
Yvette G. SinkSince Jul 21, 2026

What work does this license cover?

Issued Jun 9, 1989. Reissued Jul 21, 2026.

What should you check before hiring?

What to ask before you hire

  1. Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
  2. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  3. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  4. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  5. 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.
  6. 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)