Merthyr Tydfil, South Wales Valleys
Kitchen-diner rear extension in Merthyr Tydfil
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 Merthyr Tydfil and the surrounding area, with one contract from the first survey to building control sign-off.
Merthyr Tydfil is covered from our South Wales Valleys round, including CF47 and CF48. For Merthyr Tydfil kitchens we plan the extraction route and the island drainage before the slab is poured, so nothing has to be chased in later.
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 Merthyr Tydfil?
Guide prices for a kitchen-diner rear extension in Merthyr Tydfil start from our Wales rate of £1,770–£2,880 per square metre, including VAT. 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a kitchen-diner rear extension in Merthyr Tydfil?
Planning for a kitchen-diner rear extension in Merthyr Tydfil follows the Welsh householder rules.
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. 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?
Merthyr Tydfil 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 kitchen-diner rear extension in Merthyr Tydfil 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.
Kitchen-diner rear extensions near Merthyr Tydfil
Close by, we work in Aberdare, about 3.8 miles away, and Mountain Ash, about 4.4 miles away.
- Kitchen-diner rear extension in Aberdare
- Kitchen-diner rear extension in Mountain Ash
- Kitchen-diner rear extension in Tredegar
- Kitchen-diner rear extension in Treharris
- Kitchen-diner rear extension in Rhondda
Other work in Merthyr Tydfil:
FAQ
Kitchen-diner rear extension questions in Merthyr Tydfil
Can you match the brick or stone on my Merthyr Tydfil house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.
How big should a kitchen-diner be?
Around 25 to 35 m² for the combined kitchen, dining and seating areas suits most family homes. Your survey shows what fits the house.
How long does a rear extension take to build in Merthyr Tydfil?
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.
How much does a kitchen-diner rear extension cost in Merthyr Tydfil?
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.