Barnsbury, Greater London
Wraparound extension in Barnsbury
An L-shaped extension that fills the side return and runs across the back. We design, get the approvals for and build wraparound extensions in Barnsbury and the surrounding area, with one contract from the first survey to building control sign-off.
We cover Barnsbury (N1C, N1 and N7) as part of our Greater London work. In Barnsbury we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear.
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 wraparound extension cost in Barnsbury?
Guide prices for a wraparound extension in Barnsbury start from our London rate of £2,860–£4,680 per square metre, including VAT. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £63,000–£103,000 |
| L-shaped, about 30 m² of new floor | £86,000–£140,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Barnsbury?
Whether your wraparound extension in Barnsbury needs a planning application depends on its size, your house and any local restrictions.
In England the side part of a side return or wraparound must meet the side-extension rules (one storey, under 4 metres high, no more than half the width of the original house), and those rights do not apply on designated land. Because a wraparound combines a side and a rear extension, many need householder planning permission.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
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 Barnsbury like to extend?
Much of Barnsbury is Victorian and Edwardian terraced housing with narrow back additions, which suits side returns, wraparounds and 3 metre rear extensions. Many streets are in conservation areas, gardens are short, and almost everything comes through the house or along a rear alley.
How a wraparound extension in Barnsbury 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Wraparound extensions near Barnsbury
From Barnsbury, the nearest places we also cover are Islington (0.7 miles) and Holloway (0.9 miles).
- Wraparound extension in Islington
- Wraparound extension in Holloway
- Wraparound extension in Highbury
- Wraparound extension in Canonbury
- Wraparound extension in Camden Town
Other work in Barnsbury:
FAQ
Wraparound extension questions in Barnsbury
How long does a rear extension take to build in Barnsbury?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is the site visit in Barnsbury free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
What postcode areas do you cover around Barnsbury?
Including N1C, N1 and N7, and the surrounding Greater London area.
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.
Do I need planning permission for a rear extension in Barnsbury?
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.