- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 07 Dec 2020
There is no established definition of what constitutes a ‘tall building’, instead there are several different criteria that typically determine whether a building can be considered to be tall.
Firstly, it is important to consider the urban context of the building. If a 10-storey building is in a central business district (CBD) surrounded by high-rise buildings of 20-storeys, then it may not be considered particularly tall. However, if a 10-storey building is in a suburban area that is predominantly low-rise, it would be considered to be a tall building. Historic England suggests that definitions of tall buildings should be 'based on evidence assessing the local context'. This means that definitions of what constitutes tall will vary from place to place. For example, Cambridge City Council defines a tall building as anything that 'breaks the existing skyline and/or is significantly taller than the surrounding built form'. Whereas Oxford has traditionally defined anything above the parapet height of the 18.2m Grade II-listed Carfax Tower as 'tall'. Ref https://historicengland.org.uk/whats-new/news/tall-buildings-advice-consultation/
Secondly, it can also be dependent on proportion. Buildings that are not particularly tall in terms of number of storeys can considered ‘tall’ if they are slender. Whereas, a building that is relatively tall but has a large footprint (such as a ‘groundscraper’) may not be considered ‘tall’.
The Council on Tall Buildings and Urban Habitat (CTBUH) defines a ‘supertall’ building as one that is more than 300 m (984 ft) in height. This classification is exceeded by ‘megatall’ buildings which are those exceeding 600 m (1,968 ft) in height.
- The number of storeys means occupants need to use a lift to reach their destination
- The height is beyond the reach of available fire-fighting equipment.
- The height can have a serious impact on evacuation.
Other definitions include:
- A low-rise building is one which is not tall enough to be classified as high-rise.
- Mid-rise buildings of five to ten storeys, equipped with lifts.
- Super-slender buildings which are pencil-thin and of 50-90+ storeys.
 Related articles on Designing Buildings Wiki
Featured articles and news
One of England's grandest country houses.
Take just two minutes to provide your feedback.
An update of standards and regulations are under consideration.
Exploring the key to the adoption of this abundant energy source.
His clients have ranged from Liberace to St Nick to world-class athletes.
These tactical structures can be permanent or temporary.
Organisation recognises milestones of the project's next phase.
Welding and metalworking businesses must manage respiratory risks.
New report explores how regulations are being put into action.
The golden thread and BS 8644-1.
Bitumen binder may delay road surface deterioration.
A varied portfolio of internationally recognised buildings.
Threatened by housing and expanding universities.
Getting "boots on the ground" to make things happen.