The mezzanine is this open space overlooking another room below. The mezzanine can be either a bedroom, a library, a dressing room or a second living room. Ideal for optimizing small areas , the mezzanine can take different forms. Under the roof, around a glass roof, concealed on a storage or bed, the mezzanine must be placed in a room where the ceiling height is at least 4 m2. However this condition varies according to the function that the mezzanine will have.

- the mezzanine bed : perfect in a children's room, the mezzanine bed does not necessarily need a high ceiling. Several children in a room? A small room for a lot of toys? The mezzanine bed is perfect for a child's room, however it is not recommended to install a loft bed to a child of 6 years . We also pay attention to secure the place by avoiding for example to install the mezzanine near a window or an electrical circuit.

- a loft in the living room: office, bedroom, library or 2nd living room, mezzanine can be created in different ways depending on the function you want to give it. Only downside : have a lounge area large enough to afford to place a mezzanine. However, the weight of the mezzanine and its height depend on its use. Aimed at a child? Has several adults? For everyday use or only occasional? To install a second living room or bedroom, it is better to opt instead for a suspended mezzanine. It takes less space than a mezzanine floor and gives an airy style.

- a mezzanine in another room : create different levels to more easily delimit a room of another or play on different volumes , the mezzanine can also allow to add a missing piece. And the choice of the stairs is essential according to the use of this new room.

- The miller's ladder : a staircase without risers of about 70 degrees.
- The Japanese staircase : a staircase with staggered steps, which means that the steps are cut out.
- The spiral staircase : the steps revolve around a central core.

Good to know : when building a mezzanine of a surface of 5 to 20 m2 , it is necessary to declare the works to the Town hall. Beyond 20 m2 , it is necessary to obtain a building permit.