Demolition of the existing double pitch roofs and replacement with a roof terrace with a new natural slate mansard roof surround with dormer windows, associated new access stair, WC & minor store. New structural support at upper floor levels to support the side wall; a new staircase connection to lower levels and some minor internal works including installation of a misting system and reinstatment of some removed or altered original features.

Demolition of the existing double pitch roofs and replacement with a roof terrace with a new natural slate mansard roof surround with dormer windows, associated new access stair, WC & minor store. New structural support at upper floor levels to support the side wall; a new staircase connection to lower levels and some minor internal works including installation of a misting system and reinstatement of some removed or altered original features.

Amendments to planning permission dated 12 July 2022 (RN: 21/07264/FULL) for alterations and extensions to the Ritz Hotel and William Kent House including the change of use of the casino to a dual flexible use as hotel and/or private members club, a two storey side extension to William Kent House, extensions to the Ritz hotel including on the site of 22 Arlington Street comprising an extension of five basements, lower ground, ground, mezzanine and seven upper floors to provide additional hotel floorspace, new and upgraded hotel facilities including hotel rooms, restaurant and spa, new entrances on Arlington Street, arrival and drop off facilities, changes to the servicing and refuse facilities, car and cycle parking, plant, landscaping and all works including demolition, enabling, highways and other ancillary works. Namely, minor alterations to the ground and upper floors of William Kent House (WKH) and the triangular staircase in the Ritz building; and external works to WKH including re-spacing balcony columns; ground floor external door detailed with light; first floor French windows cills lowered; new soil pipe to south west façade; Increased scope of slate replacement; relocated position of access hatch and dormer; new access ladder; windows and dormer louvre modification and to junction between Winter Garden and WKH.

Amendments to planning permission dated 26 July 2019 (RN:19/03428/FULL) for the demolition of existing dwellinghouse and erection of new four storey dwellinghouse (Class C3) comprising a basement floor extending under part of the front and rear gardens, ground and two upper floors, and associated external alterations, including replacement of front boundary wall. Namely, minor repositioning of windows; repositioning of the side entrance door and change to style of door; Dormer window sizes reduced; Rear ground floor doors combined with windows and brick piers removed; Design of front portico simplified to be more in keeping with the house; Parapet detail amended; Alterations to chimney, height and capping; Reduction in size of rooflights to ground floor single storey rooms; Splitting up of the rooftop courtyard glazing; Alteration to basement lightwell configuration; Glazed metal door and security gates added and lowering of basement window cills; 5mm increase in height to a side extension; change in eaves height to main roof.

Demolition behind retained facade; reconstruction of the rear mansard; replacement dormer window on front roof slope; rebuilding the side and rear elevations with extensions to side and rear; installation of air source heat pump in the rear garden; provision of a bin store in the front garden; and new front boundary wall, piers and railings.

Amendments to planning permission dated 16 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, increasing the width of the steps from lower ground floor level and incorporation of a planter within the retaining wall.

Demolition of existing single storey, flat roofed rear extension which sits between lower and upper floor levels and the erection of a larger rear extension with a mansard roof to create a two storey internal space. At roof level of the main building, construction of a new dormer to the west facing pitch and the enlargement of the existing east facing dormer, both with rooflights. New rooflight is proposed to the front roofslope.

Variation of Condition 1 of planning permission dated 12th November 2020 (RN 20/04650/FULL) which in itself varies Condition 1 of planning permission dated 20 June 2017 (RN: 17/02520/FULL) for, 'Demolition of the existing building and redevelopment to provide a five storey building consisting of lower ground, ground and first to fourth floor levels to provide 10 residential units (comprising of 3 x 1 bedroom flats, 4 x 2 bedroom flats and 3 x 3 bedroom flats) including balconies/terraces with associated car and cycle parking'; NAMELY, alterations to the front and rear facades including the re-handing of lower facade and basement lightwell and the installation of additional glazing; relocation of the building entrance; reconfiguration of the core adjacent to the western flank wall; changes to the number and size of the dormer windows at fourth floor front; installation of a curved window/brick wall at rear basement level; provision of a residents' gym at rear basement level; relocation of bin stores and cycle store to the external area beneath the undercroft and reduction in the number of flats from 10 to 8 (Site includes 17A, 17B and 18 Three King's Yard) (Application under s73 of the Act).

Alterations to 111 and 113 Ebury Street comprising demolition and replacement of gabled wall to the rear, alterations to the existing fenestration, replacement of staircase to front lightwell, installation of new dry riser inlet housings, demolition of chimney stack to the rear of 113 and demolition and replacement of front mansards to 111 and 113 inclusive of dormer windows and valley gutters.

Demolition and erection of rear ground/first floor extension, new rear dormer, new French doors to lower ground front lightwell and replacement windows.