Side and wraparound extension planning
Side extensions use the width of the plot, often the narrow side return next to a kitchen. Wraparound schemes combine a side return with a rear extension, and that combination usually changes the planning route.
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What these projects typically achieve
- A wider kitchen by filling in a narrow side return
- A larger family space where the side and rear are combined
- A new entrance, utility or ground-floor bathroom
The planning considerations
Permitted development treats side extensions more restrictively than rear ones, with limits on width, height and how close they come to the boundary fronting a highway. On designated land, side extensions are generally excluded from permitted development altogether.
Wraparound extensions combine categories, and in practice most of them need a householder planning application.
Who this is for
- Owners of semi-detached and terraced houses with a usable side return
- Homeowners considering combining side and rear space in one project
- People whose plot width, boundary position or corner plot makes the route unclear
Typical process
- Free planning check on the property and proposal.
- Free 15–20 minute call with us.
- Written quote setting out scope, fees and programme.
- Design, drawings and the planning application where one is needed.
Important things to be aware of
- Building up to or close to a boundary raises party wall and construction access issues that planning does not deal with.
- Side extensions on designated land are generally outside permitted development.
- Corner plots and properties with two frontages are assessed differently, and street-facing impact matters more.
Frequently asked questions
- Can I build right up to the boundary?
- Planning and party wall matters are separate questions. A scheme can be acceptable in planning terms and still require a party wall award and agreed access arrangements with your neighbour.
- Does a wraparound always need planning permission?
- Not automatically, but combining side and rear elements frequently exceeds one or more permitted development limits, so an application is the usual route.
- Will it affect my neighbour's light?
- Councils assess impact on neighbouring amenity as part of the decision. Rights of light are a separate legal matter from planning.
Related pages
Official sources
Tell us about your project
Tell us about your property and what you would like to change. We review the enquiry and you can request a free 15–20 minute call to talk it through. We help homeowners in Hampshire, Surrey and Berkshire.
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