Sunderland, Tyne and Wear
Two-storey rear extension in Sunderland
Two-storey rear extension in Sunderland: a larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We measure the house, show you what the rules allow, price it in writing and build it.
Sunderland is covered from our Tyne and Wear round, including SR2, SR3, SR4 and SR5. Two-storey rear extensions suit semi-detached houses in Sunderland best, where the extra bedroom matters as much as the bigger kitchen.
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 two-storey rear extension cost in Sunderland?
Guide prices for a two-storey rear extension in Sunderland start from our North East England rate of £1,620–£2,430 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 × 5 m footprint, two floors (30 m²) | £48,500–£73,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £78,000–£116,500 |
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 two-storey rear extension in Sunderland?
The planning route for a two-storey rear extension in Sunderland is set by England's householder rules and your council.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
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 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 two-storey 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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.
Two-storey rear extensions near Sunderland
We also build two-storey rear extensions in nearby Ryhope (2.3 miles) and The Boldons (3.9 miles).
- Two-storey rear extension in Ryhope
- Two-storey rear extension in The Boldons
- Two-storey rear extension in Seaham
- Two-storey rear extension in Washington
- Two-storey rear extension in Houghton-le-Spring
Other work in Sunderland:
FAQ
Two-storey rear extension questions in Sunderland
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.
What postcode areas do you cover around Sunderland?
Including SR2, SR3, SR4, SR5, SR6 and SR9, and the surrounding Tyne and Wear area.
Does a two-storey rear extension need planning permission?
Almost always. England and Northern Ireland allow 3 metres without an application only if at least 7 metres remains to the rear boundary; Wales and Scotland are similar or stricter.
Is the site visit in Sunderland free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How much does a two-storey rear extension cost in Sunderland?
As a guide, £1,620–£2,430 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £48,500–£73,000 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.