Variation of condition 1 of planning permission dated 10 December 2019 (RN 19/07849/FULL) for the excavation of a basement extension below the front garden, lowering of the existing lower ground floor and rear garden level, erection of two-storey glazed infill extension to the rear, re-configuration of layout for the lower ground to first floor to create a single family dwelling. Landscaping works of rear yard and new stairs to glazed infill extension. Alterations to the front lightwell including relocating the stairs and landscaping the front garden from, NAMELY, to vary the approved drawing numbers to amend the design of the ground and lower ground floor lightwell wall location, internal layout design and new proposed wall to match the neighbouring properties.

Variation of Conditions 1 and 3 and removal of Condition 6 of planning permission dated 4 June 2019 (RN: 19/00040/FULL) for the erection of a mansard roof extension and two storey rear extension with terrace on top, replacement of windows fenestration, installation of recessed street-level doorway and new front door, all in connection with the conversion of the existing flat into three residential dwellings. NAMELY, amend the design of door to front elevation, to add waste/recycling storage in the third floor flat, and include details of windows, doors and railings.

Variation of condition 1 of listed building consent dated 10 August 2020 (RN: 20/02568/LBC) for 'Alterations and extensions to 32 Belgrave Square and redevelopment of 25/27 Belgrave Mews South behind retained facade including new link extension between the mews house and main building, fourth floor infill extension, new mechanical plant and rooflights, and associated alterations, in connection with enlargement of single family dwellinghouse and erection of an Orangery extension beyond rear wing at ground floor level (site includes 32 Belgrave Square and 25/27 Belgrave Mews South)'. Namely, to amend the decision notice to include additional plan numbers.

Amendments to planning permission dated 10 August 2020 (RN: 20/02567/FULL) for Variation of condition 1 of planning permission dated 12 December 2018 (RN 18/08718/FULL) for 'Alterations and extensions to 32 Belgrave Square and redevelopment of 25/27 Belgrave Mews South behind retained facade including new link extension between the mews house and main building, fourth floor infill extension, new mechanical plant and rooflights, and associated alterations, in connection with enlargement of single family dwellinghouse and erection of an Orangery extension beyond rear wing at ground floor level (site includes 32 Belgrave Square and 25/27 Belgrave Mews South). Namely, to amend the decision notice to include additional plan numbers.

Variation of condition 1 of planning permission dated 21st August 2019 (RN:19/03949/FULL) for the 'Variation of Condition 1 of planning permission dated 19 April 2019 (RN: 18/10895) which in itself varied Conditions 1 and 3 and removal of Condition 4 of planning permission dated 4 November 2014 (RN: 14/08152) for the use as a single family dwelling (Class C3) and associated external alterations including rebuilding of the second floor, construction of a mansard roof extension at third floor, construction of terraces at first and second floor levels and alterations to windows and doors to change the proposed facing material from render to brickwork, new fenestration, and alterations to garage and entrance doors to amend the size and position of windows on the north and east elevations; to insert a double door on the east elevation; to move position of the entrance door on the north elevation; the garage door to be replaced by a window; to render the remaining sections of the building; and to remove condition 4 as the garage will not be used for parking vehicles. NAMELY to make design changes to windows, bin store, roofing material and roof lights.

Amendments to planning permission dated 23 March 2018 (RN: 17/08716/FULL) for Variation of condition 1 and removal of condition 33 and 34 of planning permission dated 20 April 2016 (RN: 15/06448) for the 'Demolition of all existing buildings and comprehensive redevelopment to provide a mixed use development accommodated in a single building arranged around a central courtyard of lower ground, ground, eight upper floors, rooftop plant and basements. Use of new building for hotel comprising up to 190 guest rooms, restaurants/bars, ballroom, function rooms, hotel leisure/spa facilities, ancillary and back of house spaces (Class C1), 24-28 residential dwellings including ancillary residential leisure and amenity facilities (Class C3) and retail (Class A1), car and cycle parking with access from Grosvenor Crescent and Halkin Street, refuse, delivery and circulation spaces within basements and other associated works. (Site includes Yorkshire House, Grosvenor Crescent, 3, 4, 5 and 8 Pembroke Close and 12 Halkin Street London SW1)'. NAMELY, to amend the approved drawing numbers to allow design changes to all building facades and internal alterations to the design of the building, installation of a Building Maintenance Unit at roof level and alterations to the roof parapet line, NAMELY, to make changes to the south-west building elevation facing Forbes House, specifically in relation to the approved windows and their layout on the southern part of the site and to add an additional condition (38) to the planning permisison: "You must carry out the development in accordance with the approved Design Amendment Statement Ref: 1GP-HAP-XX-XX-RP-AR-0096 insofar as it relates to the approved windows and their layout on the southern part of the elevation and maintain it in accordance with this Design Amendment Statement in perpetuity thereafter."

Amendments to planning permission dated 1 September 2014 (RN: 14/02566/FULL) for: Variation of Condition 1 of planning permission dated 04.09.13 (RN: 12/12041) for external alterations and extensions including rebuilding of existing 7th and 8th floor levels, installation of photo-voltaic cells, green roof & plant at roof level, alterations to street facades and rebuilding of rear facades (with new balconies on Smith Court and Piccadilly Theatre frontages, and roof terraces at eight floor level on all frontages), provision of 38 dwellings at 4th-8th floors, with new residential entrance to Sherwood Street, use of second and third floor as offices (Class B1), reconfiguration of existing uses at basement, ground and first floor levels at 12/13 Sherwood Street and 63-75 Brewer Street to provide 2 No. retail (Class A1) units and altered health club (Class D2) layout with new health club entrance on Brewer Street - to allow minor amendments to the approved scheme including: changes to the steel window design on the street facing facades; alterations to the aluminium window design on the rear facades; installation of ventilation grilles in the windows at 3rd-7th floor levels on the Sherwood Street and Brewer Street elevations; alterations to the flank/party wall on Brewer Street; changes to the roof layout and massing; AND removal of Condition 3(2) (requiring detailed drawings of new windows): NAMELY, to amend energy and sustainability strategies to facilitate the removal of a trigeneration system forming part of the central plant within The Crown Estate's Quadrant development and amend the wording of condition 20 accordingly.