Glass Rooftop Penthouse, London, United Kingdom

When used as private outdoor terrace spaces, setbacks can allow for significantly larger and more protected spaces than cantilevered balconies. Due to the desirability of this outdoor space, buildings may be designed with such setbacks on more than one of its uppermost levels, to allow apartments on several levels to feature such terraces. Not all penthouses have such terraces, but they are a desired feature. One such space may be divided among several apartments, or one apartment may occupy an entire floor. A penthouse apartment/condominium may also provide occupants with private access to the roof space above the apartment, instead of or in addition to terrace space created by an adjacent setback.
Location and size
Penthouse apartments have not only the advantages of a regular apartment such as security and convenient location but also all those of a house such as size and design.