Class S prior approval scheme
The Classes S prior approval scheme in the UK permits the change of use of agricultural buildings to state-funded schools or registered nurseries, without requiring full planning permission, provided certain conditions are met and prior approval is obtained from the local planning authority.
The Class S prior approval scheme aims to facilitate the conversion of agricultural buildings to educational and childcare facilities, supporting the provision of essential services in rural areas. This helps to enhance community infrastructure and provide more opportunities for education and childcare in these regions.
By allowing these conversions under a prior approval scheme, the regulatory process is streamlined, making it easier and quicker to repurpose agricultural buildings for these important uses, while still ensuring that any significant adverse impacts are considered and mitigated.
Under Class S, agricultural buildings can be converted to the following uses:
- State-funded schools
- Registered nurseries
Conditions and limitations:
- Size Limit: The cumulative floor space of the building or buildings changing use under Class S must not exceed 500 square meters.
- Previous Use: The building must have been in agricultural use as part of an agricultural unit on or before 20 March 2013.
- Prior Approval: Prior approval from the local planning authority is required to assess:
The prior approval process involves submitting an application to the local planning authority. The authority will review the application to assess potential impacts related to transport, noise, contamination, and flooding. If the authority does not respond within the statutory period (usually 56 days), the development is deemed to have prior approval and can proceed.
[edit] Related articles on Designing Buildings.
- Alterations to existing buildings.
- Article 4 direction.
- Change of use class.
- Class Q permitted development.
- Class R prior approval scheme.
- Class Q prior approval scheme.
- CLC calls for rethink of permitted development rights.
- Conservation area.
- Enforcement notice.
- Established use certificate.
- IHBC responds to supporting defence infrastructure and the future of time-limited permitted development rights.
- Lawful development certificate.
- Listed building.
- Local development order.
- National planning policy framework.
- Permitted development: The end of the high street or a blessing in disguise?
- Planning enforcement.
- Planning permission.
- Prior approval.
- Renovation.
- Section 215.
- Sui generis.
- Town and Country Planning Act.
- Town and Country Planning (General Permitted Development) (Amendment) (England) Order.
- Use class.
Featured articles and news
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.
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.
Prostate Cancer Awareness Month
Why talking about prostate cancer matters in construction.
The Architectural Technology podcast: Where it's AT
Catch up for free, subscribe and share with your network.
The Association of Consultant Architects recap
A reintroduction and recap of ACA President; Patrick Inglis' Autumn update.
The Home Energy Model and its wrappers
From SAP to HEM, EPC for MEES and FHS assessment wrappers.
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.






















