Permitted development, explained.
Many extensions and loft conversions can be built without a planning application. Answer three quick questions to see where your project is likely to stand.
What does your project need?
This gives you an indication only. Limits, conditions and local restrictions vary from house to house, so we always check your property before advising.
Common questions.
What is permitted development?
A national grant of planning permission for certain types of building work, so you do not need to submit a planning application. Size limits and conditions apply to every type.
Do I still need Building Regulations approval?
Yes. Permitted development only covers planning. Most extensions and loft conversions also need Building Regulations approval, which looks at structure, fire safety, insulation and ventilation.
What counts as the original house?
The house as it stood on 1 July 1948, or as first built if that was later. Extensions added by you or by a previous owner count towards the limits.
What is an Article 4 direction?
A direction from your council that removes some permitted development rights in a defined area, usually to protect local character. Your council can tell you whether one covers your street.
What is a Lawful Development Certificate?
Official confirmation from the council that your project is lawful under permitted development. It is optional, but it gives you certainty and is useful when you later sell or remortgage.
Will my neighbours be consulted?
Not for standard permitted development. For larger single-storey rear extensions, which go through the prior approval route, neighbours are consulted and can object.
Are the rules changing?
The government has consulted on wider and taller extension rights, but at the time of writing those proposals are not law and the limits in this guide still apply. Always check that the figures are current.
What about Wales and Scotland?
The rules are different there. This guide covers England only.
Not sure where you stand?
Tell us about your home and we will give you a straight answer.