Penthouse
The term 'penthouse' is used to describe an apartment on the top floor of a high-rise building. According to the New York City building code, a penthouse is ‘...an enclosed structure on or above the roof of any part of a building, which is designed or used for human occupancy.’ Penthouses are frequently the largest, most luxurious, and therefore the most expensive, apartments in a building.
In architectural terms, a penthouse is a single-occupancy living space built onto the rooftop as an additional floor, set back from the outer walls. These setbacks act as terraces and allow for significantly larger open spaces than cantilevered balconies. Some penthouses may have two or more levels. These might be referred to as a 'duplex', 'triplex' and so on.
Penthouse apartments became popular in New York during the ‘Roaring Twenties', as economic growth created many of the first skyscraper developments. Wealthy Americans equated luxury and prestige with having the best view from a building, and so favoured the top floor apartments.
Penthouses are also characterised by their luxurious amenities which are often not included in the rest of the building’s apartments. Such features might include:
- A private entrance or lift (without which, it is sometimes argued that the apartment does not in fact qualify as a true penthouse).
- Higher/vaulted ceilings.
- Fireplaces.
- A large floor area.
- Larger windows.
- A swimming pool and jacuzzi.
In recent years, the term acquired a broader definition as developers seek to make the most out of their new construction projects. Sometimes the term ‘penthouse’ is used to refer to apartments on one of the uppermost floors of a high-rise building rather than being on the top floor. Buildings can be designed with setbacks on multiple top floors, in an attempt to create more apartments with terrace views that can be promoted as ‘penthouse apartments’. These are sometimes referred to as 'sub-penthouses' and have a lower level of specification than the actual penthouses.
High-rise buildings may also have 'mechanical penthouses' which are structures on the roof deck that enclose mechanisms such as lift equipment and rope descent systems (RDS) for window cleaning.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Introducing or next Guest Editor Arun Baybars
Practising architect and design panel review member.
Quick summary by size, shape, test, material, use or bonding.
Types of rapidly renewable content
From forestry to agricultural crops and their by-products.
Terraced houses and the public realm
The discernible difference between the public realm of detached housing and of terraced housing.
Put digitalisation and sustainability at the core of curricula
Project management educators are urged.
Looking back at the influence of climate events
From a designer and writer: 'There are limits to growth but no limits to development'.
Terms, histories, theories and practice.
Biophilic design and natural light
Letting in the light and natural elements into spaces.
APM Programme Management Conference 2024
Strategies for Success.
Residential takes the reins as contract awards even out
Contracts down, but remain above the last quarter of 2023.
Celebrating Eid and the largest mud-brick building.
Barry Kingscote claims prestigious CIOB CMYA Award.
The British Mosque: an architectural and social history
The story of some 1,500 mosques or more in Britain.
Heat pump refrigerants, efficiencies and impacts
R12 to R1270 what are the differences?
Global heat pump market in 2023
Challenging times with positive but modest outlook.
Beyond the infrastructure pipeline
Opportunities and chokepoints.