The scope of works included replacing the existing shallow mansard with a new steel framed mansard creating a large open plan fifth floor space with access via a large electronic rooflight to a roof terrace over. The existing reinforced concrete staircase between ground and first was refigured to accommodate additional space under. A new lift shaft was designed to be independent from the floor structure to minimise vibration issues. New open plan spaces throughout the property required detailed design most notably within the basement under a traditional brick arched entranceway. Repairs including the levelling of floors, improvement of timber joist bearings, provision of noggins and some general brickwork repairs.