Berwick-upon-Tweed, Northumberland
Kitchen-diner rear extension in Berwick-upon-Tweed
An open-plan kitchen, dining and family room that opens straight onto the garden. If you live in Berwick-upon-Tweed and want to know what a kitchen-diner rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Berwick-upon-Tweed is covered from our Northumberland round, including TD15. For Berwick-upon-Tweed 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 Berwick-upon-Tweed?
Guide prices for a kitchen-diner rear extension in Berwick-upon-Tweed start from our North East England rate of £1,710–£2,790 per square metre, including VAT. North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,500–£33,500 |
| 4 m wide × 5 m deep (20 m²) | £34,000–£56,000 |
| 4 m wide × 6 m deep (24 m²) | £41,000–£67,000 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a kitchen-diner rear extension in Berwick-upon-Tweed?
The planning route for a kitchen-diner rear extension in Berwick-upon-Tweed is set by England's householder rules and your council.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always 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 Berwick-upon-Tweed like to extend?
Terraces and semis are typical around Berwick-upon-Tweed. On terraces a single-storey rear extension across the back yard is usually the practical choice; semis often have room for more.
How a kitchen-diner rear extension in Berwick-upon-Tweed 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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.
Kitchen-diner rear extensions near Berwick-upon-Tweed
We also build kitchen-diner rear extensions in nearby Kelso (20.4 miles) and Dunbar (25.4 miles).
- Kitchen-diner rear extension in Kelso
- Kitchen-diner rear extension in Dunbar
- Kitchen-diner rear extension in Galashiels
- Kitchen-diner rear extension in Selkirk
- Kitchen-diner rear extension in Tranent
Other work in Berwick-upon-Tweed:
FAQ
Kitchen-diner rear extension questions in Berwick-upon-Tweed
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.
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.
Where does the cooker extraction go?
Through the new wall or roof, ducted to outside. Recirculating hoods are possible but less effective.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Can you match the brick or stone on my Berwick-upon-Tweed house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Do you handle building control in Berwick-upon-Tweed?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.