Variation of condition 1 of planning permission dated 16th November 2021 (RN: 21/05242/FULL) for Erection of rear extension, formation of lightwell and associated excavation to lower ground floor level; glazed conservatory at rear ground floor level with associated balcony and stair; partial demolition of existing closet wing and replacement with raised roof level; installation of dormer window, roof light and AC units at roof level and associated works. NAMELY, installation of an alternative air conditioning unit and replacement of its enclosure with an acoustic screen at roof level.

Demolition of existing conservatory and erection of a replacement single storey rear extension; erection of rear dormer to roof; installation of front rooflights; replacement of rear ground floor door; provision of raised patio; and associated works.

Variation of Condition 1 of planning permision dated 16 October 2023 (RN: 23/05842/FULL), which itself varied planning permission dated 22 December 2022 (RN: 22/06621/FULL) for: Reconfiguration of two residential units to form one unit within Nos. 25, 26 and 48; and new residential unit within No. 49; installation of four condenser units, two on each of the roofs of Nos. 25 and 26; and extension at rear third and fourth floor level of No. 25 and associated works (site includes 25-26 Chester Square and 49-48 Eaton Mews South). NAMLEY, to allow 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 25 and 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.

Erection of a dormer to rear roof.

Excavation of basement storey beneath house and rear courtyard, rear single storey infill extension to courtyard with fully glazed roof, installation of Juliet balcony to side elevation at first floor and enlargement of existing bathroom window, new window at second floor to rear elevation and new dormer window to rear elevation at second floor. Installation of 2 windows to second floor flat roof, replacement of the existing roof covering; Installation of ASHP plant within rear courtyard and installation of solar panels to existing second floor flat roof.

Amalgamation of 3 residential units, to provide 2 x 3 bed residential units, extension and alterations to roof and installation of 2 rear dormer windows.

Demolition and reconstruction of rear extensions at lower ground and ground floor level to create an enlarged first floor terrace; excavation of front pavement vaults; repairs to the front and rear facades; replacement of windows with double glazed timber windows; modifications to the rear mansard to create a concealed plant area and lift overrun, and new dormer windows; and associated alterations; all to alter and extend dwellinghouse (Class C3).

Details of facing materials, dormer windows, rooflights and sample panel of brickwork pursuant to Conditions 4, 5 and 7 of planning permission dated 02 May 2023 (RN:23/00647/FULL)

Rear dormer extension and the installation of 3 rooflights to the front roofslope.

Details of new external windows and doors including dormer windows pursuant to Conditions 12 part 1 (partial) of planning permission dated 16 March 2021 (RN: 20/07145/FULL).