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Modern Construction Services

Modern Construction Services of Riverside holds California license 450564 (B General Building, C20 Warm-Air Heating, Ventilating and Air-Conditioning). The CSLB file dated Oct 26, 2026 lists it as active.1 It expires Dec 31, 2027.

Doing business as Modern Heat And Air Inc.

Active

Modern Construction Services, Riverside

  • Workers' comp has a cancellation date on file: Oct 17, 2026.
License
450564
Class
B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning
Expires
Dec 31, 2027
Bond
$25,000
Workers' comp
Insured to Sep 19, 2027

CSLB file dated Oct 26, 2026

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

Issued Dec 27, 1983.

Bond
$25,000American Contractors Indemnity Company, from Mar 8, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredState Compensation Insurance Fund, from Sep 19, 2017, to Sep 19, 2027, cancel date Oct 17, 2026

What work does this license cover?

A cancellation date is on file for a bond or policy. Ask for a current certificate before work starts.

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 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 26, 2026)
  2. Contractors State License Board (CSLB)