Code Requirements for Basements

The State of Minnesota has updated the building code effective January 24, 2015. We are in the process of reviewing our website to make sure everything is up to code, but you should always review the State of Minnesota Building Code before beginning any project.

  1. General Information
  2. Windows
  3. General Framing Information
  4. Fireblocking & Draftstopping
  5. Drilling & Notching of Framing
  6. Insulation
  7. Smoke Alarms & CO Detectors
  8. Combustion Air for Appliances
  9. Gypsum Wallboard (Drywall)
  10. Electrical Installations
  11. Plumbing Installations
  12. Heating Installations
  • Ceiling heights in basements should be a minimum of 7 feet.
  • Bathrooms must be provided with ventilation via a window of not less than 3 square feet or a mechanical exhaust fan with a minimum rating of 50 cfm. Rigid metal duct creates much less resistance to air flow and will improve the efficiency of your bath fan.
  • Toilets must be installed in a space at least 30 inches wide and at least 24 inches of clear space must be provided in front of the toilet.
  • Showers should have a clear space within the stall of at least 30 inches.
  • Fireplaces and stoves may be installed in basements but must be installed in strict accordance with the manufacturers written instructions.
  • Bedrooms must be at least 70 square feet in area.
  • Nail plates should be installed wherever nails or screws may come in contact with electrical wiring or plumbing or gas piping.
  • Electrical wiring installations are subject to inspection by the State Board of Electricity. Call 612-798-1877 for information on permits and inspections.