Newcastle upon Tyne, Tyne and Wear
Kitchen-diner rear extension in Newcastle upon Tyne
An open-plan kitchen, dining and family room that opens straight onto the garden. If you live in Newcastle upon Tyne 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.
Newcastle upon Tyne is covered from our Tyne and Wear round, including NE3, NE4, NE5 and NE6. A kitchen-diner is often the reason people in Newcastle upon Tyne extend: the back kitchen in brick terraces and colliery houses is rarely big enough for a table.
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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 Newcastle upon Tyne?
A kitchen-diner rear extension in Newcastle upon Tyne is priced at £1,710–£2,790 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 Newcastle upon Tyne?
Here is how the rules in England apply to a kitchen-diner rear extension in Newcastle upon Tyne.
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.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always 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 Newcastle upon Tyne like to extend?
Brick terraces, colliery houses and post-war semis make up much of Newcastle upon Tyne. Former mining areas often need a coal mining risk check before foundations are designed.
How a kitchen-diner rear extension in Newcastle upon Tyne 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Newcastle upon Tyne
Neighbouring places we cover include Gateshead (0.9 miles) and Gosforth (1.8 miles).
- Kitchen-diner rear extension in Gateshead
- Kitchen-diner rear extension in Gosforth
- Kitchen-diner rear extension in Felling
- Kitchen-diner rear extension in Whickham
- Kitchen-diner rear extension in Wallsend
Other work in Newcastle upon Tyne:
FAQ
Kitchen-diner rear extension questions in Newcastle upon Tyne
How long does a rear extension take to build in Newcastle upon Tyne?
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.
Should the sink face the garden?
If the plan allows, an island sink or hob facing the glass is a common choice. It needs a floor-level drain run, which is easy to lay in a new slab.
How much does a kitchen-diner rear extension cost in Newcastle upon Tyne?
As a guide, £1,710–£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.
Do you handle building control in Newcastle upon Tyne?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.