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California contractor license

Matrix HG Inc

Matrix HG Inc of Concord holds California license 812232 (B General Building, C4 Boiler, Hot Water Heating and Steam Fitting, C10 Electrical, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing, C38 Refrigeration, C43 Sheet Metal). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Sep 30, 2028.

Licensed 24 years, longer than 68% of 87 active Concord electrical contractors.

Active

Matrix HG Inc, Concord

License
812232
Class
B General Building; C4 Boiler, Hot Water Heating and Steam Fitting; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing; C38 Refrigeration; C43 Sheet Metal
Expires
Sep 30, 2028
Bond
$25,000
Workers' comp
Insured to Oct 1, 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
$25,000Fidelity And Deposit Company Of Maryland, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredZurich American Insurance Company, from Oct 1, 2026, to Oct 1, 2027

Who is on this license?

Officer
Matthew M. StimsonSince Aug 18, 2022
Responsible managing officer
Daniel B. GreesonSince Sep 5, 2002
CEO and president
Arthur D. HooverSince Sep 5, 2002

What work does this license cover?

Issued Sep 5, 2002.

Which other Concord businesses hold B General Building?

California electrical contractorsCalifornia plumbing 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)