2- story an 1 half story : A two-story home is a conventional home design consisting of a floor plan divided into two distinct levels, one directly above the other. The vertical separation between the two levels is full-height. A two-story house has two floors or levels. It is a modular home with two above-ground stories. In a traditional two-story home, you will have full 8 foot or taller walls throughout the entire floor. A two-story house with natural light and ventilation in the loft space between the ceiling of the second floor and the roof above is called a 1-1/2 story house.