Swindon, Wiltshire
Bungalow rear extension in Swindon
Single-storey rear extensions that keep everything on one level. If you live in Swindon and want to know what a bungalow rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Swindon is covered from our Wiltshire round, including SN2, SN3, SN4 and SN5. For Swindon bungalows we design the roof first, because the low eaves decide the height of the new room.
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 Swindon?
In Swindon, our guide for a bungalow rear extension is £1,920–£3,120 per square metre including VAT for a 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) | £23,000–£37,500 |
| 4 m wide × 6 m deep (24 m²) | £46,000–£75,000 |
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 bungalow rear extension in Swindon?
Here is how the rules in England apply to a bungalow rear extension in Swindon.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it 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 Swindon like to extend?
Swindon 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 bungalow rear extension in Swindon 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.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Bungalow rear extensions near Swindon
Neighbouring places we cover include Royal Wootton Bassett (5.4 miles) and Calne (12.7 miles).
- Bungalow rear extension in Royal Wootton Bassett
- Bungalow rear extension in Calne
- Bungalow rear extension in Cirencester
- Bungalow rear extension in Wantage
- Bungalow rear extension in Carterton
Other work in Swindon:
FAQ
Bungalow rear extension questions in Swindon
Do I need planning permission for a rear extension in Swindon?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
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.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
What postcode areas do you cover around Swindon?
Including SN2, SN3, SN4, SN5, SN25 and SN26, and the surrounding Wiltshire area.
Can you match the brick or stone on my Swindon house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.