- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 10 Nov 2017
Sui generis and planning permission
The different use classes are set out in the Town and Country Planning (Use Classes) Order 1987. This stipulates that in terms of planning permission, if a use of land is to change within a use class, then this does not require planning permission. However, planning permission is usually needed where the change of use involves activities within the sui generis category. These include theatres, petrol filling stations, casinos, amusement centres, car hire businesses, and so on. See Sui generis for more information.
There are, however, permitted development rights that allow movement between some sui generis uses and other uses. There is a common misconception that changing the use from an existing use class to a sui generis class always requires planning permission. Permission is only required if the sui generis use is materially different from the existing one.
If there is any doubt, a lawful development certificate can be applied for. This must include a detailed and unambiguous description of the use, operations or other matter for which it is to be granted. The characteristics of the matter should be spelled out in detail to avoid future problems of interpretation.
 Related articles on Designing Buildings Wiki
Featured articles and news
There are many ways of classifying types of building. Have a look at our range of building articles.
BSRIA have launched the 'major update' of the go-to design framework guide for building services.
How to get results with building life cycle assessment.
Government publishes a prospectus inviting proposals for new 'garden communities'.
The Morandi motorway bridge in Genoa collapses during rainstorm while undergoing maintenance works.
'Developed design' is a phrase coined by the RIBA for their 2013 Plan of Work. But what does it actually mean?
New green paper published aiming to rebalance the relationship between landlords and residents and tackle stigma.
RIBA calls for a comprehensive ban on combustible materials.
Lump sum contracts can be referred to as ‘fixed price’ contracts, although strictly this is not correct. Find out more here.
Ramboll offer guidance to civil engineers on how to make projects 'off-site ready'.
Government announces its Rough Sleeping Strategy, with further funding for social housing.