wheelchair access (esp bathrooms)
conversion of DR to bedroom for someone unable to climb stairs
some people like warm, others cooler, radiant heat from tulikivi lets people be near or far from heat, like old fashioned radiator
porch same height as first floor, and porches designed to be used for comfort
wide doors (also facilitate heat transfer when open) or no doors (open floor plan)
stairs as stage for children's plays
flexibility of rooms upstairs when we have an influx of family members visiting (different bathrooms can go with different rooms by closing doors)
flexibility to finish 3rd floor in the future, as times change and people may be forced to live in homes comprised of greater numbers people.
Most houses are not designed with a dog room, mud room or appropriate pantires:
Dog room & access to a yard
pantries and mud room
private and public areas of the house - dividing lines - for when we have company. This allows occupants comfort in initiating planned or impromptu gatherings in the public areas of the house.