structural:summarization, structural:scholar_edition, information:classification, quality:correction
Various

In more urban areas, apartments close to the downtown area have the benefits of proximity to jobs and/or public transportation. However, prices per square foot are often much higher than in suburban areas.

Moving up in size from studio flats are one-bedroom apartments, which contain a bedroom enclosed from the other rooms of the apartment, usually by an internal door. This is followed by two-bedroom, three-bedroom, etc. Apartments with more than three bedrooms are rare.

Small apartments often have only one entrance. Large apartments often have two entrances, perhaps a door in the front and another in the back, or from an underground or otherwise attached parking structure. Depending on the building design, the entrance doors may be connected directly to the outside or to a common area inside, such as a hallway or a lobby.

In many American cities, the one-plus-five style of mid-rise, wood-framed apartments have gained significant popularity following a 2009 revision to the International Building Code; these buildings typically feature four wood-framed floors above a concrete podium and are popular with developers due to their high density and relatively lower construction costs.