The number of planning applications for domestic basements in London has more than tripled since 2011, although the rate of growth slowed sharply last year
New figures from property data company Glenigan show that 887 applications involving a residential basement were submitted to local authorities in the capital during 2015.
That was up from just 274 applications in 2011, an increase of 324 per cent over the period.
Jason Wren, director of Shape Architecture, which has built a number of basement extensions, told AJ: ‘The growth since 2011 doesn’t surprise me.
‘We are finding the start of this year as busy as last year, and that was a very busy year.
‘We now have more clients in outlying boroughs. Whereas we used to be focused on Chelsea, Kensington and Westminster, we are now doing jobs in Windsor, Queens Park and Ealing.
‘People are cottoning on that they can add value or expand in their existing property – there is a lot more information out there.’
Annual growth in the number of applications was 26.5 per cent last year, compared to a massive jump of 56.1 per cent the previous year.
Since the start of 2015, three London boroughs – Kensington & Chelsea, Westminster and Islington, have imposed restrictions on basement development of more than one storey below ground.
But Wren said he did not believe this was not a factor in the slowing growth of the market.
He said: ‘It hasn’t stopped them being built. It has changed what people are building – they aren’t going for such big basements in these boroughs.’