Berwick-upon-Tweed, Northumberland
Side return extension in Berwick-upon-Tweed
Infilling the narrow passage beside a Victorian or Edwardian back addition. If you live in Berwick-upon-Tweed and want to know what a side return extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Berwick-upon-Tweed (TD15) as part of our Northumberland work. Side returns suit the Victorian and Edwardian terraces found across parts of Northumberland, where the kitchen sits in a narrow back addition.
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 side return extension cost in Berwick-upon-Tweed?
For Berwick-upon-Tweed we work from the North East England rate: £2,070–£3,420 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 |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £25,000–£41,000 |
| 2.5 m wide × 7 m deep (17.5 m²) | £36,000–£60,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a side return extension in Berwick-upon-Tweed?
The planning route for a side return extension in Berwick-upon-Tweed is set by England's householder rules and your council.
Side return infills and the side leg of a wraparound are treated as side extensions in England: single-storey, no more than 4 metres high and no wider than half the original house. They are not permitted development in conservation areas, National Parks or National Landscapes, and a joined wraparound often needs a planning application because the side and rear rules apply together.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
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 Berwick-upon-Tweed like to extend?
Brick terraces, colliery houses and post-war semis make up much of Berwick-upon-Tweed. Former mining areas often need a coal mining risk check before foundations are designed.
How a side return extension in Berwick-upon-Tweed 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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.
Side return extensions near Berwick-upon-Tweed
Neighbouring places we cover include Kelso (20.4 miles) and Dunbar (25.4 miles).
- Side return extension in Kelso
- Side return extension in Dunbar
- Side return extension in Galashiels
- Side return extension in Selkirk
- Side return extension in Tranent
Other work in Berwick-upon-Tweed:
FAQ
Side return extension questions in Berwick-upon-Tweed
Is the site visit in Berwick-upon-Tweed free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Berwick-upon-Tweed?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Glass roof or solid roof with rooflights?
A glass roof gives the most light; a solid roof with long rooflights is warmer and quieter in rain. Both work.
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.
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.
Can you match the brick or stone on my Berwick-upon-Tweed house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.