Subd. 1. Foundations. Any structure designed to be used as a dwelling shall be placed on a foundation constructed of masonry, concrete or treated wood. All footings supporting the foundation shall be constructed of solid masonry or concrete placed at a minimum depth of 42 inches below the finished grade; provided that, this subdivision shall not apply to a building constructed on a reinforced concrete slab if the slab forms the ground floor of the dwelling.
Subd. 2. Exterior of All Buildings. The exposed exterior of all buildings shall be brick, solid masonry or concrete, or colored steel, wood or Masonite siding.
Subd. 3. Exception. This section shall not apply to manufactured homes in manufactured home parks licensed by the state.