There are many main differences between living in an apartment and a living in a house. A house is usually on the ground floor and has an upstairs and a downstairs. In a house, there is normally (but not always) a kitchen, dining room and living room downstairs, whilst the bedrooms and bathroom are upstairs. In an apartment, which is usually in a block, so raised above ground level, all of the rooms of the house are on the same floor (unless the flat has a mezzanine level).
Apartments can often be as expensive, if not more expensive than houses. Houses often come with garages, where as apartments can usually only come with a parking space. Houses often have gardens out the front and out the back. The size of the gardens depends on the size of the property itself. To some people, apartment living is a more stylish and less traditional than house dwelling. In major cities, apartments are often city dwellings whereas houses are the located in the suburbs.