In Canada, we call a single-story house a bungalow. We also have bi-levels, where when entered, you go downstairs to another floor or up a few steps to the main floor. Then we have duplexes, two houses side-by-side, generally with the main floor and then one up a flight of stairs to another one. Also three-level and four-level splits; we lived in a four-level before downsizing to the mobile in which we now live. In that case, we entered the main floor where the kitchen and living room were, went up seven steps to three bedrooms a bath-and- a- half, or down seven to a family room, bedroom and another bath, and then down another seven to what we called the basement, where the furnace and laundry were.