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California contractor license

JMM Construction LLC

JMM Construction LLC of San Jose holds California license 683398 (B General Building, C20 Warm-Air Heating, Ventilating and Air-Conditioning). The CSLB file dated Oct 28, 2026 lists it as active.1 It expires Jun 30, 2028.

Licensed 32 years, longer than 89% of 185 active San Jose HVAC contractors.

Active

JMM Construction LLC, San Jose

License
683398
Class
B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning
Expires
Jun 30, 2028
Bond
$25,000
Workers' comp
Insured to Oct 3, 2027

CSLB file dated Oct 28, 2026

From the CSLB file dated Oct 28, 2026. Not a consumer report; check the board before you hire.

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

Bond
$25,000North River Insurance Company (The), from Jun 16, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from Oct 3, 2026, to Oct 3, 2027

What work does this license cover?

Issued Dec 31, 1993.

Which other San Jose businesses hold B General Building?

HVAC Contractors in San JoseCalifornia HVAC contractorsGeneral Contractors in San JoseCalifornia 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 28, 2026)
  2. Contractors State License Board (CSLB)