Two-storey wraparound extensions in Shepton Mallet
We plan and build two-storey wraparound extensions for homeowners in Shepton Mallet and nearby. Every project starts with a free visit and a design stage priced in writing before any work begins.
Quick reference for homeowners in Shepton Mallet.
- Postcode districts
- BA4, BA7 and BA10
- County / area
- Somerset, England
- Price region
- South West England
- Guide price
- £124,000–£170,000 (£2,210–£3,040 per m²)
- Approval route
- Planning permission is needed: the side part takes it outside permitted development in England.
- Nearest towns
- Wells (4.6 miles), Midsomer Norton (7.1 miles), Street (9.5 miles)
- Distance to Bath
- about 15.1 miles
- First visit
- Free, no obligation
About a two-storey wraparound extension
A two-storey wraparound extension is an L-shaped addition that extends both the side and the rear of your house, on two floors. It gives one of the largest gains in floor space of any extension, typically a big open-plan kitchen and living area below and two or more bedrooms or bathrooms above. In England it needs planning permission, because the side part is more than one storey.
We cover Shepton Mallet (BA4, BA7 and BA10) and the places around it, including Wells (4.6 miles), Midsomer Norton (7.1 miles) and Street.
What it costs in Shepton Mallet
Most of the cost of a two-storey wraparound extension is set by its size and specification. For Shepton Mallet and the rest of South West England, our guide is £2,210–£3,040 per m² including VAT, so about £124,000–£170,000 for an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space). Steelwork for wide openings is the item most likely to move the figure; we'll know once the engineer has designed it.
| Spec | Per m² | An L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space) |
|---|---|---|
| Essential | £2,040–£2,800 per m² | £114,000–£156,500 |
| Standard | £2,210–£3,040 per m² | £124,000–£170,000 |
| Premium | £2,660–£3,650 per m² | £149,000–£204,000 |
Planning and building regulations in Shepton Mallet
In England, a two-storey wraparound extension needs householder planning permission, because any extension beyond a side wall must be single storey to be permitted development. The application costs £548 (or £575 for applications made from 8 December 2026). Councils weigh the side part against the street scene and the rear part against neighbours' light and outlook, and should decide within 8 weeks of validation.
Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.
Design points for Shepton Mallet homes
Daylight to the middle
A deep L-shaped plan can leave the middle of the ground floor dark, because the old rear rooms are now enclosed. We use wide rear openings, a well-placed stair and, where part of the extension is single storey, roof lights, while keeping total glazing within the Part L allowance.
Phasing the build
A wraparound touches two sides of the house at once, so the kitchen and often the rear rooms are out of use for part of the build. We plan the sequence so you keep a working kitchen and bathroom for as long as possible, or advise when moving out briefly makes sense.
How we'd run your project
Free site visit
We visit your home in Shepton Mallet, look at the structure, access and boundaries, and talk through what you want the new rooms to do.
Choose the approval route
Some designs fit permitted development, most need a householder application. We decide which applies in England before drawing in detail.
Detail and price
Construction drawings, engineer's calculations and building control sign-off, then a written fixed price for the build.
Build and sign-off
Vetted teams working under S&K build the extension, and we arrange the building control completion certificate at the end.
Questions about two-storey wraparound extensions in Shepton Mallet
Do I need planning permission for a two-storey wraparound extension in Shepton Mallet?
Shepton Mallet is in England, so England planning rules apply. Planning permission is needed: the side part takes it outside permitted development in England. If in doubt, a lawful development certificate or a planning application gives you certainty before you build.
Who handles building regulations for a project in Shepton Mallet?
We handle it as part of the project. What's needed in England: building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end. We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
How long does a two-storey wraparound extension take?
Allow 4 to 8 weeks for survey and design, then the approval period (councils should decide householder applications within 8 weeks of validation), then 4 to 8 weeks of technical design, which can overlap. The build itself usually takes 14 to 20 weeks, longer for large or complex designs.
Can a wraparound extension be part single, part two-storey?
Yes. Many wraparounds keep the rear part single storey with roof lights over the kitchen and put the two-storey part to the side. This can reduce the effect on neighbours and the cost. We set out both options at the design stage, so you can compare floor space against price before choosing.
Does a wraparound extension need steel?
Almost always. Opening the corner of the house and the old rear wall to make one open-plan space means steel beams, and often a steel post or frame at the outside corner. The structural engineer sizes these, and the steel is ordered once the design is fixed, which is one reason a wraparound needs careful sequencing.
Nearby
Other towns near Shepton Mallet:
Other extensions in Shepton Mallet
- Rear
- Side
- Part two-storey
- Over a garage
- First floor
- Semi-detached
- Detached
- Kitchen and bedrooms
- Bedroom and en-suite
All two-storey extension services in Shepton Mallet · Two-storey wraparound extensions across Somerset
Send us your postcode and a few details. We'll get back to you to arrange a visit and talk through your options.