Alterations to existing residential unit including construction of a new fourth floor mansard with dormer windows to front and rear, plus rooflight. Modifications to third floor front and rear facades and fenestration, including installation of double-glazed timber framed sash windows.

Construction of mansard roof extension with rear terrace to rear closet wing and dormer extension to side of existing roof extension to provide additional residential accommodation. Alterations to existing rear dormer.