Shepton Mallet, Somerset
Glazed rear extension in Shepton Mallet
Full-height glass, slim frames and big rooflights for the most open rear room. We design, get the approvals for and build glazed and glass-box rear extensions in Shepton Mallet and the surrounding area, with one contract from the first survey to building control sign-off.
Shepton Mallet sits in Somerset, with postcode districts including BA4. If your garden in Shepton Mallet faces south, expect us to talk about overhangs and solar-control glass before frame colours.
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 glazed rear extension cost in Shepton Mallet?
For Shepton Mallet we work from the South West England rate: £2,910–£4,990 per square metre of new floor, including VAT, standard specification. 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) | £35,000–£60,000 |
| 4 m wide × 6 m deep (24 m²) | £70,000–£120,000 |
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 glazed rear extension in Shepton Mallet?
The planning route for a glazed rear extension in Shepton Mallet is set by England's householder rules and your council.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is within 2 metres of a boundary.
New fabric must meet Approved Document L (2021 edition incorporating 2023 amendments): walls 0.18, roof 0.15 and floor 0.18 W/m²K, windows 1.4 W/m²K or Band B. Under the simple route, new windows, doors and rooflights should not exceed 25% of the extension floor area plus any openings removed; more glass is possible with a whole-house calculation.
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 Shepton Mallet like to extend?
Shepton Mallet has Victorian terraces nearer the centre and post-war semis on the edges. Sloping gardens are frequent, which affects floor levels and steps down to the patio.
How a glazed rear extension in Shepton Mallet 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.
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.
Glazed rear extensions near Shepton Mallet
We also build glazed and glass-box rear extensions in nearby Wells (4.6 miles) and Midsomer Norton (7.1 miles).
- Glazed rear extension in Wells
- Glazed rear extension in Midsomer Norton
- Glazed rear extension in Street
- Glazed rear extension in Frome
- Glazed rear extension in Bath
Other work in Shepton Mallet:
FAQ
Glazed rear extension questions in Shepton Mallet
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
How long does a rear extension take to build in Shepton Mallet?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Will a glass extension be too hot?
Not if it is designed for its orientation, with solar-control glass, shading and ventilation.
Is the site visit in Shepton Mallet free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
What postcode areas do you cover around Shepton Mallet?
Including BA4, and the surrounding Somerset area.
Can you match the brick or stone on my Shepton Mallet house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.