Demolition of existing shed and construction of a five storey infill extension between existing blocks to provide five residential units (comprising of one, four storey split level maisonette with private garden and four, four bedroom flats with balconies to south (rear) elevation); creation of a new entrance and an internal lift core and access staircase shared with existing and newly created flats; erection of four balconies to existing flats; enlargement of existing refuse stores to the front, reconfiguration of existing parking to provide seven parking spaces (including two disabled spaces); and external alterations.