Cwmbran, South Wales Valleys
Bungalow rear extension in Cwmbran
Bungalow rear extension in Cwmbran: single-storey rear extensions that keep everything on one level. We measure the house, show you what the rules allow, price it in writing and build it.
Cwmbran sits in the South Wales Valleys, with postcode districts including NP44. For Cwmbran 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 Cwmbran?
A bungalow rear extension in Cwmbran is priced at £1,720–£2,790 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
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 Cwmbran?
Whether your bungalow rear extension in Cwmbran needs a planning application depends on its size, your house and any local restrictions.
In Wales a single-storey rear extension can often be permitted development if it projects no more than 4 metres beyond the rear wall and is no more than 4 metres high. Wales has no prior approval route for deeper extensions, so anything bigger needs a householder planning application.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings 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 Cwmbran like to extend?
Cwmbran is largely terraced streets on sloping ground, where back gardens step up or down from the house. Excavation, retaining walls and drainage are priced at the survey.
How a bungalow rear extension in Cwmbran comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Bungalow rear extensions near Cwmbran
We also build rear extensions for bungalows in nearby Pontypool (3.4 miles) and Caerleon (4.3 miles).
- Bungalow rear extension in Pontypool
- Bungalow rear extension in Caerleon
- Bungalow rear extension in Risca
- Bungalow rear extension in Newport
- Bungalow rear extension in Abercarn
Other work in Cwmbran:
FAQ
Bungalow rear extension questions in Cwmbran
How long does a rear extension take to build in Cwmbran?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can you match the brick or stone on my Cwmbran 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.
Do you handle building control in Cwmbran?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
How much does a bungalow rear extension cost in Cwmbran?
As a guide, £1,720–£2,790 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £20,500–£33,500 at that rate. Your written price follows the survey.
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.