Storage space is at least 10 to 25 percent of the total floor area of the house. Storage space is flexible enough to meet changing family needs. There is suitable and adequate outside storage. All doors are located to avoid diagonal traffic paths across rooms. Outside doors are protected from rain and snow.
Doors are wide enough to allow furniture to be carried through.
Exterior doors are at least 36 inches wide to allow passage of a person using a wheelchair, walker, or assistance. Doors open into rooms they serve. Outside doors have sturdy locks and peepholes. All windows can be opened for natural ventilation. Larger windows are located on the south to take advantage of the sun and wind.