Demolition of existing first floor rear back addition and erection of a replacement full width rear extension at first floor level, on top of the existing back addition; erection of a single storey rear extension at lower ground floor level; excavation under the footprint of the whole building and underneath the rear garden to form a sub-basement level; alterations to the main roof to include the installation of a new rooflight and loft decking in connection with the formation of a roof terrace; alterations to the roof of first floor rear back addition to include increasing the height and installation of solar panels; installation of French doors to replace the existing window at ground floor level to the rear elevation; installation of new windows at ground and first floor level to the side elevation; erection of an external staircase from sub-basement to garden level at the rear of the property (access to the rear garage); demolition of the existing garage in the rear garden and erection of a replacement part one, part two storey plus-basement annexe building to provide habitable accommodation ancillary to the main dwellinghouse; installation of a new door to side boundary wall fronting Astrop Terrace elevation.

Demolition of roof and first floor level to both properties; erection of 3no. additional floors at roof level comprising a front and rear mansard extension, including solar panels on top of the main flat roof, rooflights to the side roofslopes and windows to front and rear elevations to both properties; alterations to openings, repositioning of main front entrance door, replacement of an existing window with a new enlarged window to the front elevation (no.26); installation of a new enlarged rooflight to replace existing on top of the flat roof, replacement of existing bi-folding doors with new enlarged bi-folding doors to the rear elevation of ground floor back addition (no.26).