Works to front lower ground floor including new York stone paving to lightwell with single step below external staircase, new timber sash window with sidelights, new security railings to both windows in lightwell at no. 25, to match no. 26 existing railings; new York stone paving at no. 26, lightwell, and new Portland stone to both no. 25 and no. 26; rear elevation works include new glazing and glazing bar layout to external door to rear elevation, omit proposed screen between no. 25 and no. 26 terraces, new metal railings to coping at no. 25 terrace and new double dormer; new front door, garage gate and associated fanlights at no. 48; internal alterations; and associated works (site includes 25-26 Chester Square and 49-48 Eaton Mews South). (Amendments to previously granted Listed Building Consent dated 22 December 2022 RN: 22/06622/LBC).

Internal at all levels to reconfigure layouts and external alterations to the eastern lightwell and rear elevation and courtyard, creation of a concealed plant area at roof level within an acoustic enclosure and new dormer windows.

Erection of dormer windows to side and rear roof slopes of 23 and 25 Abbey Road and internal alterations at 2nd floor levels to create access to new loft spaces. (Linked with 23/04011/FULL)

External and internal alterations including new marble entrance step,new steel staircase to front lightwell. Alteration to slope of roof at rear ground floor and replacement in slate, new dormer windows to roof, lead renewal to roof. New internal staircase to 3rd and 4th floors, minor alteration to flat layouts, removal of non-original partitions, new bathrooms and kitchens, dropped ceilings to lower ground floor and within part of residential units, insulation and sound proofing to floor voids, replacement of damp proofing to lower ground floor, replacement of and repairs to doors to meet fire standards. Secondary glazing to existing windows, replacement of non-original sash windows with new to match original. New plant to rear ground floor roof and ground floor lightwell including new enclosure, fan coil units internally and replacement rooflights.

Erection of rear extension at lower ground floor level, extension under front garden and associated lowering of lower ground floor level; Erection of rear dormer; Alterations to fenestration; Installation of plant machinery; Erection of outbuilding in rear garden; Alterations to rear boundary walls; landscaping works; and associated external alterations. Internal alterations, including changes to planform. (Linked with 22/07801/FULL)

Amalgamation of flats 4 & 5 to provide a 4-bedroom unit over three floors; raising of existing mansard roof to create an enclosed terrace at fourth floor level; replacement of the dormer windows at third floor level and addition of one extra dormer; and provision of a new balcony at 3rd floor level accessed by converting a window into a door; internal alterations (Linked with 22/05463/FULL)

Erection of two-storey extension within rear garden accessed through double storey glazed walkway, closet wing extension at first and second floor levels, replacement of windows with slimline double-glazed units, alterations to front lightwell and entrance area, provision of two condenser units within acoustic enclosure to roof of rear extension, extension of existing third floor dormer window and associated external and internal alterations.

Rear infill extension at lower ground floor light well, replacement of existing dormer roof, lowering floor of vaults and lower ground floor, creating new steps within the front lightwell, new rear French doors to rear courtyard at ground level, part replacement and refurbishment of windows, replacement rear roof light and new roof hatch to central valley and internal alterations, all to alter single family dwelling house (Class C3).

Alterations at roof level including new dormer window, two new conservation type flat roof lights and new tiled roof; repainting of the front facade including windows and first floor balconies. (Linked with 22/07275/FULL)

External alterations at roof level including creation of lift overrun, access point, relocation of rooflight, installation of 'lifeline' fall arrest system and new finish. Replacement of existing air bricks to front elevation, and installation of ventilation grille below dormer window below the parapet at 4th floor level. Creation of opening between front and rear rooms at 4th floor level.