Sunderland, Tyne and Wear
Kitchen-diner rear extension in Sunderland
An open-plan kitchen, dining and family room that opens straight onto the garden. If you live in Sunderland 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.
Sunderland is covered from our Tyne and Wear round, including SR2, SR3, SR4 and SR5. For Sunderland 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 Sunderland?
For Sunderland we work from the North East England rate: £1,710–£2,790 per square metre of new floor, including VAT, standard specification. 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 Sunderland?
The planning route for a kitchen-diner rear extension in Sunderland is set by England's householder rules and your council.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres 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 Sunderland like to extend?
Terraces and semis are typical around Sunderland. 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 Sunderland 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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 Sunderland
We also build kitchen-diner rear extensions in nearby Ryhope (2.3 miles) and The Boldons (3.9 miles).
- Kitchen-diner rear extension in Ryhope
- Kitchen-diner rear extension in The Boldons
- Kitchen-diner rear extension in Seaham
- Kitchen-diner rear extension in Washington
- Kitchen-diner rear extension in Houghton-le-Spring
Other work in Sunderland:
FAQ
Kitchen-diner rear extension questions in Sunderland
How much does a kitchen-diner rear extension cost in Sunderland?
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.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Can I have underfloor heating?
Yes. Wet underfloor heating in the new screed is the usual choice, often with the old room's radiators kept or replaced.
Do you handle building control in Sunderland?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Sunderland?
Including SR2, SR3, SR4, SR5, SR6 and SR9, and the surrounding Tyne and Wear area.
Is the site visit in Sunderland free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.