Flats and maisonettes

Build a loft conversion on a top floor flat

Planning Permission

Planning permission may not be required if it is only internal works. However, local interpretation can vary and you should contact your local planning authority for advice.

Permission is required where you extend or alter the roof space.

You should also check whether you own the roof space which you wish to convert. If you are a leaseholder, you may need to get permission from your landlord, freeholder or management company.

If your flat is a listed building it is likely you will need listed building consent and you should contact your local planning authority for advice before you start work. Works to a listed building that affect its special historic character without consent is a criminal offence.

If your flat is in a conservation area and your proposals involve an element of demolition then you may need to apply for conservation area consent and you should contact your local planning authority for advice.

Building Regulations

Building regulations approval is required to convert a loft or attic into a liveable space.

Read more about building regulations relating to loft conversions.

Disclaimer - Wales

This is an introductory guide and is not a definitive source of legal information. This guidance relates to the planning regime for Wales. Policy in England may differ. If in doubt contact your Local Planning Authority.

Read the full disclaimer here.