Midsomer Norton, Somerset
Single-storey rear extension in Midsomer Norton
We plan and build single-storey rear extensions for homeowners in Midsomer Norton. Ground-floor space across the back of the house, usually for a kitchen, dining or family room. Start with a free site visit, then a written price once the design is agreed.
We cover Midsomer Norton (BA3) as part of our Somerset work. On stone and rendered houses like those around Midsomer Norton, a single-storey rear extension is usually the simplest way to fix a small back kitchen without touching the bedrooms.
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 single-storey rear extension cost in Midsomer Norton?
Guide prices for a single-storey rear extension in Midsomer Norton start from our South West England rate of £1,980–£3,220 per square metre, including VAT. South West prices run slightly above our West Midlands baseline; natural stone to match the house is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £23,500–£38,500 |
| 4 m wide × 5 m deep (20 m²) | £39,500–£64,500 |
| 4 m wide × 6 m deep (24 m²) | £47,500–£77,500 |
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 single-storey rear extension in Midsomer Norton?
Whether your single-storey rear extension in Midsomer Norton needs a planning application depends on its size, your house and any local restrictions.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
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 Midsomer Norton like to extend?
Stone-built and rendered houses are common around Midsomer Norton, so matching the walling is a design decision in its own right: natural stone, reconstituted stone or a render finish across old and new.
How a single-storey rear extension in Midsomer Norton 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Single-storey rear extensions near Midsomer Norton
Neighbouring places we cover include Shepton Mallet (7.1 miles) and Frome (8.1 miles).
- Single-storey rear extension in Shepton Mallet
- Single-storey rear extension in Frome
- Single-storey rear extension in Bath
- Single-storey rear extension in Wells
- Single-storey rear extension in Keynsham
Other work in Midsomer Norton:
FAQ
Single-storey rear extension questions in Midsomer Norton
Is the site visit in Midsomer Norton free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Midsomer Norton?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need a structural engineer?
Yes for the beam over the new opening and usually for the foundations. Their calculations go to building control with the drawings.
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.
Do you handle building control in Midsomer Norton?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.