Studio apartments differ from one-bedroom apartments in floor plan and size; studio apartments contain one large room combining a bedroom, living room and sometimes a kitchen, while one-bedroom apartments feature two main rooms: one, a bedroom, and the other a living room and kitchen. Studio apartments average approximately 300 to 450 feet in the United States; they belong to the smallest category of apartments, which also includes efficiency apartments and bachelor pads. Some places, like New York City, set minimum height and width requirements for one-bedrooms; there, bedrooms must have 8-foot ceilings and cover a square area of 8 feet.
Studio apartments and one-bedroom dwellings share one common trait, which is a full bathroom separate from the main living area. Both apartment types might contain a small kitchen, or kitchenette, adjoining the main room with the living room. Sometimes, however, units contain separate kitchen areas. Some studio apartments bear close resemblance to one-bedroom apartments in their layout. L-shaped apartments, for instance, contain a long, narrow living area with a small cutout section at the end containing a bed. One-bedroom apartments, however, contain a distinct barrier - typically a door - separating them from other rooms. In some areas, like New York City, local laws set additional requirements, such as that bedrooms must contain at least one window and open to an exit, such as a garden or patio.