Seaford, East Sussex
Wraparound extension in Seaford
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 Seaford and the surrounding area, with one contract from the first survey to building control sign-off.
Seaford and its postcode districts BN25 are part of our East Sussex coverage. Wraparound projects around Seaford 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 Seaford?
Guide prices for a wraparound extension in Seaford start from our South East England rate of £2,460–£4,030 per square metre, including VAT. 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 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a wraparound extension in Seaford?
Planning for a wraparound extension in Seaford follows the English householder rules.
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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Seaford like to extend?
Commuter semis and detached houses make up much of Seaford, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a wraparound extension in Seaford 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.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Wraparound extensions near Seaford
Close by, we work in Newhaven, about 2.7 miles away, and Peacehaven, about 5.0 miles away.
- Wraparound extension in Newhaven
- Wraparound extension in Peacehaven
- Wraparound extension in Rottingdean
- Wraparound extension in Eastbourne
- Wraparound extension in Lewes
Other work in Seaford:
FAQ
Wraparound extension questions in Seaford
How long does a rear extension take to build in Seaford?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
How much does a wraparound extension cost in Seaford?
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.
How long does a wraparound take?
Usually 14 to 20 weeks on site, longer than a plain rear extension because of the steelwork.
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 I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Can you match the brick or stone on my Seaford house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.