Basement
A full basement is the most common foundation in Minnesota's cold weather climate. Since foundation walls must extend 3.5 to 5.0 feet below grade, the addition few feet of wall and a concrete slab can provide an entire level of useable space. This additional space is usually regarded as a worthwhile trade-off for the additional cost. Basement walls can be concrete, concrete block, or wood. Walls must incorporate thermal and moisture control. Chronic moisture and potential health problems from mold in basements require reliable drainage and waterproofing systems that may increase costs above conventional practice. A typical windowless basement is suitable for mechanical equipment, laundry, and storage. Often living spaces and bedrooms are placed in basements as well. If there is an intention to use a basement for living space, the design must address indoor air quality, moisture control, daylighting, ventilation, and egress.