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California contractor license

Muyskens Greg Contractor Inc

Muyskens Greg Contractor Inc of Danville holds California license 635296 (B General Building). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Apr 30, 2027.

Licensed 34 years, longer than 83% of 124 active Danville general contractors.

Active

Muyskens Greg Contractor Inc, Danville

License
635296
Class
B General Building
Expires
Apr 30, 2027
Bond
$25,000
Workers' comp
Exempt

CSLB file dated Oct 31, 2026

From the CSLB file dated Oct 31, 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 31, 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 May 18, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
Exemptfrom Apr 25, 2025

Who is on this license?

Officer
Mary M. MuyskensSince Jun 6, 2000
Responsible managing officer, CEO and president
Gregory S. MuyskensSince Jan 11, 1992

What work does this license cover?

Issued Jan 11, 1992. Inactive Jul 1, 2010 to Apr 4, 2011. Reissued Jun 6, 2000.

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 Danville businesses hold B General Building?

General Contractors in DanvilleCalifornia 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 31, 2026)
  2. Contractors State License Board (CSLB)