Completion Date: October 2009

£/sqft: £470 per sqft

Architect: In House

A client that we have worked with over the past 20 years, acquired this house after we presented it to him as a joint venture development opportunity, during the summer of 2007. This house (sqft) already had planning consent to be demolished and rebuilt with the benefit of a single basement. Notwithstanding this, we decided to go back to the Royal Borough of Kensington and Chelsea to seek planning consent for a double basement and a frameless glass extension side and rear extension at ground floor level pushing the eventual gross internal area to sqft. Once planning permission was obtained and the party wall notices were in place during early 2008, we started demolition of the derelict house during April 2008. The basement was challenging with the water table being high. 18 Metre secant piles were installed to the front and rear boundary of the site. There was a lot of sand and ballast in the superstrata requiring permeation grouting to stabilise the ground whilst temporary propping was in place to allow the reinforced concrete underpins to be installed beneath the foundations of the adjoining houses. The house was then rebuilt to compliment the style of the existing terrace. The fitout was implemented thereafter to the exacting standards that we had set ourselves, whilst value engineering details to balance cost against the high specification.