Bath, Somerset
Bungalow rear extension in Bath
Thinking about a bungalow rear extension in Bath? Single-storey rear extensions that keep everything on one level. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Bath (BA1 and BA2) as part of our Somerset work. For bungalows in Somerset, a rear extension is the usual way to add space without adding stairs.
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 bungalow rear extension cost in Bath?
A bungalow rear extension in Bath is priced at £1,920–£3,120 per square metre including VAT as a guide, before kitchen fit-out and fees. 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) | £23,000–£37,500 |
| 4 m wide × 6 m deep (24 m²) | £46,000–£75,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Bath?
Here is how the rules in England apply to a bungalow rear extension in Bath.
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.
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 Bath like to extend?
Stone-built and rendered houses are common around Bath, 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 bungalow rear extension in Bath 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.
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.
Bungalow rear extensions near Bath
Neighbouring places we cover include Keynsham (6.4 miles) and Neston (7.4 miles).
- Bungalow rear extension in Keynsham
- Bungalow rear extension in Neston
- Bungalow rear extension in Trowbridge
- Bungalow rear extension in Midsomer Norton
- Bungalow rear extension in Kingswood
Other work in Bath:
FAQ
Bungalow rear extension questions in Bath
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 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.
Will the roof look odd?
Not if the pitch and tiles match. Where the eaves are low, a flat-roofed section with a lantern is an alternative.
Is the site visit in Bath free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can you match the brick or stone on my Bath house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Bath?
Including BA1 and BA2, and the surrounding Somerset area.