Function
In relation to the built environment, the term ‘function’ refers to the purpose of a building or structure. It can also relate to the proper operation, process or performance of something and how it works, such as plant, tools, lift, building services.
In architecture, functionalism (or ‘form follows function’) is the principle that rather than buildings being designed in accordance with past precedents or stylistic trends (aesthetics), the underlying purpose of the building should determine its form.
Buildings have a wide range of different functions, for example, a house is to be lived in, an office serves as a place of work for business activities, a shopping centre is for consumers to access retail outlets, a school is for pupils and teachers to undertake education, and so on.
Buildings may have a range of different functions (for example, a factory may include offices, a restaurant, assembly lines and so on) and some functions may conflict with one another, for example, access vs security, views vs privacy and so on.
Products, materials, components and systems, can be assessed in terms of their functionality, that is, the suitability and capability with which they serve a particular purpose or practicality for which they were intended.
See also: Primary function.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Guide to ISO 19650 for Architecture Firms (2026)
A user gives their low down.
A UK training and membership provider for mould remediation professionals.
Building Safety recap April, 2026
A short and longer run-through of the month, with links to further information and sources.
CIAT May 2026 briefing.
Independent NSI and BAFE study exploring how organisations are changing the way they buy fire safety services.
From medieval scribes to modern word art.
ECA welcomes crackdown on late payment and push for clean energy, whilst CIOB seek fixed cladding removal timeframes.
Cyber Security in the Built Environment
Protecting projects, data, and digital assets: A CIOB Academy TIS.
Managing competence in the built environment
ITFG publishes new industry guide on how to meet the ICC principles.
The UK's campaign to reduce noise pollution: Mythbusting, articles and topic guides.
Setting Expectations on Competence Management
Industry Competence Committee.
New Scottish and Welsh governments
CIOB stresses importance of construction after new parliament elections.
The sad story of Derby Hippodrome
An historic building left to decay.
ECA, JIB and JTL back Fabian Society call to invest in skills for a stronger built environment workforce.