Excavation of basement with lightwells to front; Demolition and replacement of rear extension at lower ground floor level with terrace at ground floor level; Excavation to lower ground floor and rear garden; Use of garage for additional internal accommodation; Installation of plant machinery to rear; Demolition of garden house; Replacement of windows throughout (part-retrospective); Landscaping works to front and rear gardens; and associated external and internal alterations. (Linked to 23/04725/FULL)

Excavation of basement with lightwells to front; Demolition and replacement of rear extension at lower ground floor level with terrace at ground floor level; Excavation to lower ground floor and rear garden; Use of garage for additional internal accommodation; Installation of plant machinery to rear; Demolition of garden house; Replacement of windows throughout (part-retrospective); Landscaping works to front and rear gardens; and associated external and internal alterations. (Linked to 23/04726/LBC)

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.

Variation of condition 1 of planning permission dated 08 March 2021 (RN: 20/03732/FULL) for the: Single storey rear extension with external landscaping following demolition of existing side and rear additions; Rear extension to existing flat-roofed North East Bay; New metal fence and Entrance gate; Rear skylight to replace existing, plant, all in connection with use as single dwellinghouse. NAMELY, alteration to, and introduction of windows and doors; replacement of existing timber side entrance to be rendered to match the main house; metal railings to the front elevation; traditional cast iron railings to rear elevation; soil vent pipes to rear and side elevations; ridge tiles to the south east bay; and retention of the flank wall in yellow stock brick instead of the approved rendering.

Amendments to planning permission dated 30 September 2019 (19/04631/FULL) for Variation of condition 1 (approved plans) and 9 of planning permission dated 21 November 2017 (RN: 17/07627/FULL) for the: Demolition of existing building and redevelopment to provide a new building comprising lower ground floor, mezzanine, upper ground floor and first to eight floor levels for use as hotel (Class C1) with ancillary Bar/Restaurant, external landscaping and associated works. Namely, to allow maintenance access to the terrace; an additional two metres of excavation at basement level, the extension at basement and ground floor level out to the rear boundary with the alms house, increased plant screen height by 0.6 metres, the introduction of a maintenance doors to the front and rear at the 8th floor, the removal of coloured window reveals, alterations to the rear lightwell, removal of skylight and bench to the front forecourt, the addition of two security bollards at front boundary of the site. NAMELY to allow the installation of 3 additional illuminated bollards to front forecourt.

Variation of condition 1 of planning permission dated 01 February 2017 (RN: 16/07799/FULL) for 'Alterations including erection of extensions at rear lower ground, ground and first floor levels, creation of roof terrace at rear third floor level, replacement of non-original windows, external repair works and landscaping'. Namely, to allow amendments including repairs to the front and rear elevations and roof coverings; adjustments to the access hatch to the roof, omission of the approved walkway and handrail and re-siting of the chimneystack to its original position; repair and rationalisation of pipework; alteration of rear French door design and provision of double glazing in the conservatory; enclosing of the rear lightwell between the main house and extension at lower ground level with rooflights; alteration of landscaping in the garden and terrace areas; and internal refurbishment works.

Erection of a rear lower ground floor extension with glass rooflights; rear ground floor terrace and associated balustrade; upper ground floor fenestration changes with Juliet balcony rails; rear garden landscape changes; alteration to first floor rear window with associated Juliet rails; changes to front second floor window cill; new rooflights to main house roof; and new bin store and bike store to front garden.

Variation of Condition 1 of planning permission dated 05 June 2020 (RN: 19/08751/FULL) for, 'Erection of rear extensions at second, third and fourth floor levels to incorporate a new lift; demolition of existing mansard roof and erection of replacement mansard; demolition and replacement of rear courtyard floor slab; installation of air conditioning units at roof level and under pavement basement vaults; demolition and rebuild of two chimney stacks on the mews; replacement of windows on all elevations of the main house, demolition and re-building of rear ground floor toilet annexe, and associated internal and external works'; NAMELY, to allow the reduction in width of the consented new southern rear windows on the second, third and fourth floors; amendment to consented rear walk on roof light panes in courtyard to align glazing bars with door openings above; addition of wall lights either side of front light well basement entrance door; addition of security cameras on the front and rear ground floor elevations; installation of an intercom to the right of the main entrance door; new handrail and balusters to staircase between second and fourth floor; and various internal alterations to all floors, landscaping works to the rear courtyard comprising rendering; stone paving; installation of light fixtures and installation of trellis panels.

Variation of Conditions 1, 13 (part vi) & 19 (part h) of listed building consent dated 17 February 2020 (19/09926/LBC); for Alterations to existing building including creation of new pedestrian & vehicular entrances; alterations to bottle balustrades & parapets; creation of three additional storeys at fifth, sixth & seventh floors; creation of two additional basement storeys; partial demolition & reconstruction of central wing; demolition & reconstruction of Triangular Courtyard facades incorporating extensions at ground to fourth floors; external alterations to Quadrangle facades including new pedestrian entrances; landscaping to Quadrangle & Triangular Courtyards; creation of external terraces at fourth, fifth, sixth & seventh floors; entrance canopies; public realm works including alterations to security walls & bollards; removal & replacement of street trees; all in connection with use as hotel comprising up to 125 hotel bedrooms/suites with flexible hotel/retail/restaurant/bar use at part ground floor, flexible hotel/restaurant use at part lower ground, part ground & part second floors; flexible hotel/bar use at part fifth & part sixth floors; flexible retail, leisure, restaurant or bar use at part ground floor, leisure/spa facilities within the basement levels & part lower ground floor ancillary ballroom, event space & meeting rooms, food & beverage facilities, back of house facilities; car, cycle parking & servicing facilities; and up to 88 residential dwellings with ancillary communal amenities, car, cycle parking & servicing; namely, amendments to the Quadrangle courtyard paving, amendments to internal layout of two residential units; installation of additional windows to fifth floor; installation of external grilles to the east and north elevations and submission of details reserved by Condition 13 (vi) (internal finishes, including vehicle and service areas) and 19 (h) (stonework and ironwork gate details).