Newhaven, East Sussex
Wraparound extension in Newhaven
An L-shaped extension that fills the side return and runs across the back. We design, get the approvals for and build wraparound extensions in Newhaven and the surrounding area, with one contract from the first survey to building control sign-off.
Newhaven is covered from our East Sussex round, including BN9. Wraparound projects around Newhaven often involve two neighbours, so we start the party wall conversations early.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a wraparound extension cost in Newhaven?
In Newhaven, our guide for a wraparound extension is £2,460–£4,030 per square metre including VAT for a standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £54,000–£88,500 |
| L-shaped, about 30 m² of new floor | £74,000–£121,000 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a wraparound extension in Newhaven?
Whether your wraparound extension in Newhaven needs a planning application depends on its size, your house and any local restrictions.
In England the side part of a side return or wraparound must meet the side-extension rules (one storey, under 4 metres high, no more than half the width of the original house), and those rights do not apply on designated land. Because a wraparound combines a side and a rear extension, many need householder planning permission.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Newhaven like to extend?
Commuter semis and detached houses make up much of Newhaven, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a wraparound extension in Newhaven comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Wraparound extensions near Newhaven
Neighbouring places we cover include Seaford (2.7 miles) and Peacehaven (2.7 miles).
- Wraparound extension in Seaford
- Wraparound extension in Peacehaven
- Wraparound extension in Rottingdean
- Wraparound extension in Lewes
- Wraparound extension in Brighton
Other work in Newhaven:
FAQ
Wraparound extension questions in Newhaven
What postcode areas do you cover around Newhaven?
Including BN9, and the surrounding East Sussex area.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can the corner be all glass?
Yes, with a steel or aluminium post or a structural glass corner. It needs careful thermal detailing to meet Building Regulations.
How much does a wraparound extension cost in Newhaven?
As a guide, £2,460–£4,030 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £54,000–£88,500 at that rate. Your written price follows the survey.
Is the site visit in Newhaven free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.