Washington, Tyne and Wear
Two-storey rear extension in Washington
Two-storey rear extension in Washington: 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.
Washington sits in Tyne and Wear, with postcode districts including NE37 and NE38. In Washington, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
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 Washington?
In Washington, our guide for a two-storey rear extension is £1,620–£2,430 per square metre including VAT for a 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 × 5 m footprint, two floors (30 m²) | £48,500–£73,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £78,000–£116,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Washington?
The planning route for a two-storey rear extension in Washington 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. 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 Washington like to extend?
Brick terraces, colliery houses and post-war semis make up much of Washington. Former mining areas often need a coal mining risk check before foundations are designed.
How a two-storey rear extension in Washington 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Two-storey rear extensions near Washington
Neighbouring places we cover include Chester-le-Street (3.7 miles) and The Boldons (3.9 miles).
- Two-storey rear extension in Chester-le-Street
- Two-storey rear extension in The Boldons
- Two-storey rear extension in Felling
- Two-storey rear extension in Houghton-le-Spring
- Two-storey rear extension in Hebburn
Other work in Washington:
FAQ
Two-storey rear extension questions in Washington
Can you match the brick or stone on my Washington house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How much does a two-storey rear extension cost in Washington?
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.
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.
What postcode areas do you cover around Washington?
Including NE37 and NE38, and the surrounding Tyne and Wear area.
How long does a rear extension take to build in Washington?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need planning permission for a rear extension in Washington?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.