Swansea, Swansea Bay
Bungalow rear extension in Swansea
For homes in Swansea, a bungalow rear extension is often the simplest way to gain space without moving. Single-storey rear extensions that keep everything on one level. We take it from survey to completion certificate.
Swansea is covered from our Swansea Bay round, including SA2, SA3, SA4 and SA5. For bungalows in Swansea Bay, 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 Swansea?
For Swansea we work from the Wales rate: £1,720–£2,790 per square metre of new floor, including VAT, standard specification. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,500–£33,500 |
| 4 m wide × 6 m deep (24 m²) | £41,500–£67,000 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a bungalow rear extension in Swansea?
Planning for a bungalow rear extension in Swansea follows the Welsh householder rules.
The Welsh Government's householder rules let many homes add a single-storey rear extension up to 4 metres deep and 4 metres high without a planning application. Deeper projects go through a householder application, because Wales has no prior approval route.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Swansea like to extend?
Older terraces near the centre and post-war semis further out are typical of Swansea. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a bungalow rear extension in Swansea 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
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 Swansea
We also build rear extensions for bungalows in nearby Clydach (4.7 miles) and Briton Ferry (5.4 miles).
- Bungalow rear extension in Clydach
- Bungalow rear extension in Briton Ferry
- Bungalow rear extension in Gorseinon
- Bungalow rear extension in Neath
- Bungalow rear extension in Llanelli
Other work in Swansea:
FAQ
Bungalow rear extension questions in Swansea
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Can you match the brick or stone on my Swansea house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can a bungalow extension be fully accessible?
Yes: level thresholds, wider doors and a wet room are straightforward to design in.
What postcode areas do you cover around Swansea?
Including SA2, SA3, SA4, SA5, SA6 and SA7, and the surrounding Swansea Bay area.
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.
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.