What is mezzanine definition?

A mezzanine is a level in a building that is partially open to the floor below. It is generally located between two main floors and is often used for storage, an office, or an additional seating area. Mezzanines are typically constructed as a platform that is supported by columns, beams, or walls. They may be built in a variety of materials including timber, steel, or concrete and can be designed to match the aesthetic of the surrounding space. Mezzanines can be found in a range of spaces including warehouses, manufacturing facilities, retail stores, and homes. They are often added to increase the usable floor space of a building without the need for a major renovation or expansion.