Milton Keynes, Buckinghamshire
Wraparound extension in Milton Keynes
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 Milton Keynes and the surrounding area, with one contract from the first survey to building control sign-off.
Milton Keynes and its postcode districts MK3, MK4, MK5 and MK6 are part of our Buckinghamshire coverage. In Milton Keynes we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear.
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 Milton Keynes?
For Milton Keynes we work from the South East England rate: £2,460–£4,030 per square metre of new floor, including VAT, 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 Milton Keynes?
Here is how the rules in England apply to a wraparound extension in Milton Keynes.
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 Milton Keynes like to extend?
Milton Keynes has a mix of Victorian terraces near the centre and larger Edwardian and inter-war houses further out. Clay soils across much of the South East mean deeper foundations near trees, which we plan for at the survey.
How a wraparound extension in Milton Keynes comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Wraparound extensions near Milton Keynes
From Milton Keynes, the nearest places we also cover are Newport Pagnell (3.5 miles) and Bletchley (3.5 miles).
- Wraparound extension in Newport Pagnell
- Wraparound extension in Bletchley
- Wraparound extension in Leighton Buzzard
- Wraparound extension in Buckingham
- Wraparound extension in Ampthill
Other work in Milton Keynes:
FAQ
Wraparound extension questions in Milton Keynes
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.
How much does a wraparound extension cost in Milton Keynes?
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.
Will it take a lot of garden?
Less than a deep rear extension of the same area, because part of the space comes from the side passage.
Is the site visit in Milton Keynes free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
How long does a rear extension take to build in Milton Keynes?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.