Brynmawr, South Wales Valleys
Wraparound extension in Brynmawr
For homes in Brynmawr, a wraparound extension is often the simplest way to gain space without moving. An L-shaped extension that fills the side return and runs across the back. We take it from survey to completion certificate.
Brynmawr and its postcode districts NP22 and NP23 are part of our South Wales Valleys coverage. Wraparound projects around Brynmawr often involve two neighbours, so we start the party wall conversations early.
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 wraparound extension cost in Brynmawr?
A wraparound extension in Brynmawr is priced at £2,050–£3,350 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 |
|---|---|
| L-shaped, about 22 m² of new floor | £45,000–£73,500 |
| L-shaped, about 30 m² of new floor | £61,500–£100,500 |
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 wraparound extension in Brynmawr?
Here is how the rules in Wales apply to a wraparound extension in Brynmawr.
In Wales a single-storey side extension can be permitted development if it is no more than 4 metres high and the house ends up no more than 50% wider than the original. Many side return infills on terraced streets, and most wraparounds, go through a householder application.
The Party Wall etc. Act 1996 also applies in Wales: two months' notice for work to a shared wall and one month for foundations dug close to a neighbour's building.
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 Brynmawr like to extend?
Brynmawr 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 wraparound extension in Brynmawr 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 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.
Wraparound extensions near Brynmawr
Neighbouring places we cover include Ebbw Vale (1.9 miles) and Tredegar (3.3 miles).
- Wraparound extension in Ebbw Vale
- Wraparound extension in Tredegar
- Wraparound extension in Abertillery
- Wraparound extension in Abergavenny
- Wraparound extension in Bargoed
Other work in Brynmawr:
FAQ
Wraparound extension questions in Brynmawr
How long does a rear extension take to build in Brynmawr?
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 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.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
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.
How much does a wraparound extension cost in Brynmawr?
As a guide, £2,050–£3,350 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £45,000–£73,500 at that rate. Your written price follows the survey.
Do you handle building control in Brynmawr?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.