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State files updated Oct 27, 2026
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Minnesota contractor license

Stack Bros Mechanical Contractors Inc

Stack Bros Mechanical Contractors Inc of Superior holds Minnesota license MB003880 (Mechanical Contractor Bond). The DLI file dated Oct 27, 2026 lists it as active.1 It expires Sep 12, 2028.

Licensed 16 years, longer than 69% of 2,439 active Minnesota HVAC contractors.

Active

Stack Bros Mechanical Contractors Inc, Superior

License
MB003880
Class
Mechanical Contractor Bond
Expires
Sep 12, 2028
Bond
On file to Sep 12, 2028

DLI file dated Oct 27, 2026

From the DLI file dated Oct 27, 2026. Not a consumer report; check the board before you hire.

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

Bond
On fileto Sep 12, 2028
Liability insurance
Not in the DLI fileCheck with the board
Workers' comp
Not in the DLI fileCheck with the board

What work does this license cover?

License level: Mechanical Contractor Bond. Issued Oct 30, 2009.

What other licenses does this business hold?

Where are other licensed Minnesota contractors listed?

Minnesota HVAC 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. Minnesota 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. The DLI file doesn't record workers' comp, so ask for the certificate.
  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 DLI 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 DLI, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Department of Labor and Industry (DLI).
  4. Check another contractor. Minnesota license lookup

Sources

  1. DLI license and registration export (dli.mn.gov, Oct 27, 2026)
  2. Department of Labor and Industry (DLI)