Muswell Hill, Greater London
Wraparound extension in Muswell Hill
For homes in Muswell Hill, a wraparound extension is often the simplest way to gain space without moving. An L-shaped extension that fills the side return and runs across the back. We take it from survey to completion certificate.
Muswell Hill is covered from our Greater London round, including N2, N8 and N10. In Muswell Hill 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 Muswell Hill?
A wraparound extension in Muswell Hill is priced at £2,860–£4,680 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 Muswell Hill?
Here is how the rules in England apply to a wraparound extension in Muswell Hill.
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 Muswell Hill like to extend?
Period terraces in Muswell Hill sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension.
How a wraparound extension in Muswell Hill 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.
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.
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.
Wraparound extensions near Muswell Hill
Close by, we work in Hornsey, about 0.9 miles away, and Crouch End, about 1.1 miles away.
- Wraparound extension in Hornsey
- Wraparound extension in Crouch End
- Wraparound extension in Wood Green
- Wraparound extension in Archway
- Wraparound extension in Friern Barnet
Other work in Muswell Hill:
FAQ
Wraparound extension questions in Muswell Hill
Do you handle building control in Muswell Hill?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Muswell Hill?
Including N2, N8 and N10, and the surrounding Greater London area.
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.
How much does a wraparound extension cost in Muswell Hill?
As a guide, £2,860–£4,680 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £63,000–£103,000 at that rate. Your written price follows the survey.
How long does a rear extension take to build in Muswell Hill?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.