Merthyr Tydfil, South Wales Valleys
Bungalow rear extension in Merthyr Tydfil
Thinking about a bungalow rear extension in Merthyr Tydfil? 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.
Merthyr Tydfil is covered from our South Wales Valleys round, including CF47 and CF48. For bungalows in the South Wales Valleys, 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 Merthyr Tydfil?
In Merthyr Tydfil, our guide for a bungalow rear extension is £1,720–£2,790 per square metre including VAT for a 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 |
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 Merthyr Tydfil?
The planning route for a bungalow rear extension in Merthyr Tydfil is set by Wales's householder rules and your council.
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. At the first visit we measure what is there now and tell you which route fits: permitted development or a householder planning application.
What are homes in Merthyr Tydfil like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Merthyr Tydfil. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a bungalow rear extension in Merthyr Tydfil 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.
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 Merthyr Tydfil
Neighbouring places we cover include Aberdare (3.8 miles) and Mountain Ash (4.4 miles).
- Bungalow rear extension in Aberdare
- Bungalow rear extension in Mountain Ash
- Bungalow rear extension in Tredegar
- Bungalow rear extension in Treharris
- Bungalow rear extension in Rhondda
Other work in Merthyr Tydfil:
FAQ
Bungalow rear extension questions in Merthyr Tydfil
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.
How much does a bungalow rear extension cost in Merthyr Tydfil?
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.
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 Merthyr Tydfil?
Including CF47 and CF48, and the surrounding South Wales Valleys area.
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 planning permission for a rear extension in Merthyr Tydfil?
Often not for a single-storey rear extension of up to 4 metres under Welsh permitted development. Wales has no prior approval route for deeper extensions.