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I N T Design Construction Inc

I N T Design Construction Inc of Berkeley holds California license 915770 (B General Building). The CSLB file dated Nov 1, 2026 lists it as active.1 It expires May 31, 2028.

Licensed 18 years, longer than 58% of 125 active Berkeley general contractors.

Active

I N T Design Construction Inc, Berkeley

License
915770
Class
B General Building
Expires
May 31, 2028
Bond
$25,000
Workers' comp
Insured to Oct 5, 2027

CSLB file dated Nov 1, 2026

From the CSLB file dated Nov 1, 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 Nov 1, 2026. Confirm with the board: CSLB license check

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

Bond
$25,000Atlantic Specialty Insurance Company, from May 27, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredService American Indemnity Company, from Oct 4, 2026, to Oct 5, 2027

Who is on this license?

Officer
Sean C. MuellerSince Oct 8, 2019
Officer
Yedideyah L. MuellerSince Oct 8, 2019
Officer
Zack R. MuellerSince Oct 17, 2019
Responsible managing officer, CEO and president
Peter B. MuellerSince May 15, 2008

What work does this license cover?

Issued May 15, 2008.

Which other Berkeley businesses hold B General Building?

General Contractors in BerkeleyCalifornia 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, Nov 1, 2026)
  2. Contractors State License Board (CSLB)