Brynmawr, South Wales Valleys
Kitchen-diner rear extension in Brynmawr
An open-plan kitchen, dining and family room that opens straight onto the garden. We design, get the approvals for and build kitchen-diner rear extensions in Brynmawr and the surrounding area, with one contract from the first survey to building control sign-off.
Brynmawr is covered from our South Wales Valleys round, including NP22 and NP23. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most Brynmawr homes.
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 kitchen-diner rear extension cost in Brynmawr?
In Brynmawr, our guide for a kitchen-diner rear extension is £1,770–£2,880 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) | £21,000–£34,500 |
| 4 m wide × 5 m deep (20 m²) | £35,500–£57,500 |
| 4 m wide × 6 m deep (24 m²) | £42,500–£69,000 |
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 kitchen-diner rear extension in Brynmawr?
Here is how the rules in Wales apply to a kitchen-diner rear extension in Brynmawr.
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
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 Brynmawr like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Brynmawr. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a kitchen-diner rear extension in Brynmawr 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Kitchen-diner rear extensions near Brynmawr
Neighbouring places we cover include Ebbw Vale (1.9 miles) and Tredegar (3.3 miles).
- Kitchen-diner rear extension in Ebbw Vale
- Kitchen-diner rear extension in Tredegar
- Kitchen-diner rear extension in Abertillery
- Kitchen-diner rear extension in Abergavenny
- Kitchen-diner rear extension in Bargoed
Other work in Brynmawr:
FAQ
Kitchen-diner rear extension questions in Brynmawr
Do I need planning permission for a rear extension in Brynmawr?
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.
What postcode areas do you cover around Brynmawr?
Including NP22 and NP23, and the surrounding South Wales Valleys area.
Can I add a utility room?
Often. A narrow utility or boot room along one side keeps the washing machine out of the open-plan space.
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 kitchen-diner rear extension cost in Brynmawr?
As a guide, £1,770–£2,880 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £21,000–£34,500 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.