I would add for the inside of the house, a poor or illogical use of space. I remember one house where the stairway to the upper floor bisected the main floor, causing there to be a hallway on one side, then a strange sort of "bumpout" under the stairway (once it had risen past 8 feet in height) on the other side. If you didn't use the hallway you had to walk through a sort of small sitting room before then entering the farthest part of the dining room.