Prior approval for permitted development
Generally it is up to a local planning authority to decide whether to allow a particular development or not. However, in England and Wales, the Town and Country Planning (General Permitted Development) Order 1995 enables central government to permit certain types of developments known as ‘permitted developments’. These are generally minor changes to existing properties.
In certain cases, even though a development is permitted, prior approval of some issues is required from the local authority. This includes:
- Specific issues to do with agricultural land, such as the purpose, siting and design of agricultural buildings as well as the construction of a private way, the siting of excavation or deposit or the siting and appearance of tanks.
- Similar issues for land used for the purposes of forestry.
- Erection of plant, machinery, buildings, or structures on land used as a mine.
- The demolition of a building.
- Siting and appearance of telecommunications masts.
The Town and Country Planning (General Permitted Development) (Amendment) (England) Order 2013 came into force on 30 May 2013. It amends the Town and Country Planning (General Permitted Development) Order 1995. Some of these amendments permit development only with prior approval of certain aspects or beyond certain sizes:
- Rear extensions up to 8m in depth for detached properties and 6m for attached properties until 30 May 2016. If a neighbor objects, prior approval is required to assess the impact of the proposed development on the amenity of any adjoining premises.
- Change of use class from office to residential.
- Change of use class to a state-funded school, from classes B1 (business), C1 (hotels), C2 (residential institutions), C2A (secure residential institutions) and D2 (assembly and leisure).
- Change of use class from an agricultural building to a flexible use falling within either Class A1 (shops), Class A2 (financial and professional services), Class A3 (restaurants and cafes), Class B1 (business), Class B8 (storage or distribution), Class C1 (hotels) or Class D2 (assembly and leisure).
The procedures for seeking prior approval are set out in the legislation.
[edit] Related articles on Designing Buildings Wiki
- Article 4 direction.
- Avoiding planning permission pitfalls.
- Change of use class.
- Class Q permitted development.
- Planning permission.
- Permitted development.
- The Town and Country Planning (General Permitted Development) (Amendment) (England) Order 2013.
- The Town and Country Planning (General Permitted Development) Order 1995.
- Use class.
[edit] External references
Featured articles and news
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.
A brief run down of changes intentions from April in an onwards.
Reslating an ancient water mill
A rare opportunity to record, study and repair early vernacular roofs.
CIOB Apprentice of the Year 2025/26
Construction apprentice from Lincoln Mia Owen wins this years title.
Insulation solutions with less waste for a circular economy
Rob Firman, Technical and Specification Manager, Polyfoam XPS explains.
Recycled waste plastic in construction
Hierarchy, prevention to disposal, plastic types and approaches.
UK Net Zero Carbon Buildings Standard V1 published
Free-to-access technical standard to enable robust proof of a decarbonising built environment.






















