Of course, not all houses can be limited to one floor, so in this instance it helps to see lower and upper floors together. By placing one above the other, relationships between the floors can be grasped; the property line box in this example of one of Sarah Susanka's "Not So Big Houses" is particularly helpful. Here, the first floor is on top, and the second floor is below; the front of the house is on the right, so the garage visible in the top left sits off an alley. I find a couple things rather interesting in these plans: The front door's location on the side of the house splits the living-dining-kitchen space into two, but instead of the living room located up front, it's the kitchen, next to a covered front porch. Second is the way the roof of the garage is used as a deck.