Washington, Tyne and Wear
Bungalow rear extension in Washington
Bungalow rear extension in Washington: single-storey rear extensions that keep everything on one level. 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. For bungalows in Tyne and Wear, a rear extension is the usual way to add space without adding stairs.
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 bungalow rear extension cost in Washington?
Guide prices for a bungalow rear extension in Washington start from our North East England rate of £1,660–£2,700 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) | £20,000–£32,500 |
| 4 m wide × 6 m deep (24 m²) | £40,000–£65,000 |
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 bungalow rear extension in Washington?
Here is how the rules in England apply to a bungalow rear extension in Washington.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part 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. 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 bungalow rear extension in Washington 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.
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.
Bungalow rear extensions near Washington
We also build rear extensions for bungalows in nearby Chester-le-Street (3.7 miles) and The Boldons (3.9 miles).
- Bungalow rear extension in Chester-le-Street
- Bungalow rear extension in The Boldons
- Bungalow rear extension in Felling
- Bungalow rear extension in Houghton-le-Spring
- Bungalow rear extension in Hebburn
Other work in Washington:
FAQ
Bungalow rear extension questions in Washington
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.
Is the site visit in Washington free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
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 Washington house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.