21 Hillgate Street, LONDON, W8 7SP
To enable the flat roof to be used as a roof terrace; structural reinforcement to roof structure; installation of retractable `roofbox' type rooflight to enable access on to terrace; installation of painted metal balustrades to front and rear of the property; addition of paving or decking board to sit on a pedestal system to form the terrace floor; and installation of timber staircase internally to provide permanent access to roof terrace