Greater London

Wraparound extensions in Greater London

An L-shaped extension that fills the side return and runs across the back. We design and build rear extensions across Greater London, from Islington and Bexley to Barking, covering single-storey kitchen extensions, two-storey additions, side returns and wraparounds.

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L-shaped wraparound extension with a standing seam roof and large corner glazing on a Victorian end-of-terrace house

In Islington we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear. Greater London is mostly 1930s semis, short terraces and post-war houses, so full-width single-storey and two-storey rear extensions are realistic on many plots. Some later estates had permitted development rights removed by condition, so we check the planning history first.

How much does a wraparound extension cost in Greater London?

A wraparound extension in Greater London 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.

Wraparound extension guide prices in Greater London
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 in Greater London?

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.

Where in Greater London do we work?

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FAQ

Questions people ask

Does a wraparound need planning permission?

Often yes, because the side and rear parts are judged together. Some fit within permitted development; we check before drawing.

How long does a wraparound take?

Usually 14 to 20 weeks on site, longer than a plain rear extension because of the steelwork.

Can the corner be all glass?

Yes, with a steel or aluminium post or a structural glass corner. It needs careful thermal detailing to meet Building Regulations.

Do you cover all of Greater London?

We cover 187 towns and districts in Greater London, including Islington, Bexley and Barking.

Who builds the extension?

Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.