Erection of rear extensions at lower ground, ground and first floor levels; erection of railings on part of top of the proposed lower ground floor rear extension and replacement of trellises on side boundaries with close boarded fencing, in connection with the formation a roof terrace; installation of new French doors following the removal of existing window, to the rear elevation at ground floor level, to provide access to the proposed roof terrace; erection of a new enlarged dormer window following the removal of existing in the rear roofslope; lowering the lower ground floor level; demolition of existing external staircase and steps and formation of new steps with metal railings and handrails in the rear garden; associated landscaping of the rear garden.

Erection of a rear extension at first floor level on top of the proposed ground floor rear extension, and the formation of a roof terrace above to the rear elevation at second floor level; erection of a single storey rear extension, to the side and rear of existing ground floor back addition; erection of a single storey rear extension at lower ground floor level, following the demolition of existing conservatory; alterations to the rear elevation at second floor level to include, removal of existing dormer windows, erection of a new dormer window, and a new dormer single door to provide access to the proposed roof terrace; landscaping of the rear garden.

Demolition of the single storey back addition and rear outbuildings attached to the rear of the main building; erection of side and rear extensions at lower ground, upper ground and first floor level, erection of a rear roof extension to replace the existing dormer window, excavation beneath the main building in connection with the creation of a new basement and the formation of a roof terrace at upper ground floor level to the main building; change of use of the main building from office (Class E) into 2 x two bedroom self-contained flats; erection of a part one storey plus-basement single family dwellinghouse in the rear garden; erection of a new boundary wall with three new entrances to the side elevation; associated landscaping and external alterations.

Erection of a rear extension at second floor level over part of the existing back addition, following demolition of the chimney; erection of a single storey side infill extension, following the demolition of side bay window and rear timber garden access door; demolition of external store to the rear of existing back addition at ground and first floor level; installation of a rooflight on top of the main flat roof at roof level; installation of a rooflight to the side roofslope of main front roof; erection of a dormer door to the rear of existing rear roof extension, comprising of sliding doors and a Juliette balcony; replacement of all existing single glazed timber framed windows with new double glazed timber framed windows; bricking up 1no. window to the side elevation at first floor level; erection of a replacement brick built bin store with timber doors to the front garden; alterations to the rear elevation at ground floor level to including installation of double glazed aluminium framed sliding doors following the removal of existing doors; erection of a glass balustrade around the perimeter of proposed rear lightwell landscaping of the front and rear gardens; excavation of part of the front and rear gardens to form lightwells, in connection with the enlargement and lowering of existing basement; alterations to the existing front lightwell to include installation of new enlarged double glazed timber framed double doors with window panels; installation of an air conditioning unit within an acoustic enclosure to the front lightwell at basement floor level.

Non-material amendment to planning permission ref: 2014/03920/FUL granted 27th August 2015 for the 'Demolition of 1 & 2 Rowley Cottages; demolition of rear of 6 Avonmore Road; erection of 5 mews houses (two storey over basement); refurbishment and reconfiguration of Leigh Court (including installation of dormer windows and balconies in the rear) and 6 Avonmore Road to provide 15 flats with associated cycle parking, refuse storage and landscaping.' Amendments to include re-location of the bin storage for occupiers of the mews block to a communal storage area, revisions to basement and ground floor of mews units 1-3.