Removal of existing terrace fencing, staircase and structure from the second floor roof of back addition; erection of a dormer to house an internal staircase in the rear roofslope; erection of glass balustrades at main roof level in connection with its use as a terrace; installation of planter pockets on metal railings, re-location of boiler flue and timber decking at main roof level; installation of 2no air conditioning units at roof level, erection of external staircase and glass balustrades including timber decking above the second floor roof of back addition.

Installation of an enlarged dormer window to replace the existing dormer window in the rear roofslope; formation of roof terraces at upper ground and second floor level; installation of French doors to replace 1no window at upper ground and first floor level, and installation of 1no window to replace the existing door at upper ground floor level to the rear elevation; installation of new doors and window to replace the existing window and door at lower ground floor level to the rear elevation; erection of a new spiral staircase to replace the existing staircase at the rear of the property; installation of a new rooflight above the main flat roof at roof level; erection of 1.8m high timber fence to subdivide rear garden for Flats A and B