Variation of condition 1 of planning permission dated 01 March 2012 (RN:11/11498/FULL) for use of part ground and upper floors as a single dwelling house (Class C3). Demolition of part of the existing two storey rear extension at ground and first floor level to create an open patio area. Construction of rear extension at second floor level. Removal of part of the existing roof and attic space to create a roof terrace and rooflight and screen to front elevation. Alterations to front and rear elevation windows and doors. NAMELY, repositioning of metal balustrade and extension of flank parapet wall.

Variation of Condition 16, Phase (4) of planning permission dated 15 December 2021 (RN 20/03623/FULL) for the amalgamation of two maisonettes to create a single dwelling house [Class C3], excavation beneath the footprint of the existing building and excavation of part of rear garden at lower ground floor level. Demolition of the existing extension to the rear and construction of a new lower ground and ground floor rear extension. Repair work to the facade, alteration to street frontage in line with the street and landscaping to the rear garden. Installation of acoustically attenuated condenser to the rear garden. NAMELY, removal of Phase 4 part of condition 16 entirely and / or varied to allow for report provided with this application to be acceptable to discharge the condition.

Amalgamation of two maisonettes to create a single dwelling house [Class C3], excavation beneath the footprint of the existing building and excavation of part of rear garden at lower ground floor level. Demolition of the existing extension to the rear and construction of a new lower ground and ground floor rear extension. Repair work to the facade, alteration to street frontage in line with the street and landscaping to the rear garden. Installation of acoustically attenuated condenser to the rear garden. (Linked to 20/03624/LBC)

Variation of Condition 1 of planning permisison dated 14 January 2015 (14/06597/FULL) for, 'Use of 8 Grosvenor Square and 1a and 2 Duke's Yard as a single family dwelling with rear extensions to 8 Grosvenor Square at second to fourth floor levels; infilling of east lightwell and creation of terrace at third floor level; new plant room at roof level. Demolition of ground and first floor rear extension to 1a and 2 Duke's Yard and replacement with new building on sub-basement, basement and ground floors with extended garden terrace to the main house over. Use of 1 Duke's Yard as a single family dwelling. Associated internal and external alterations to all buildings'; NAMELY, to extend the construction hours to between 08.00 and 21.00 (Monday to Friday) and between 08.00 and 21.00 (Saturday) for a temporary period between 19 October 2020 and 1 April 2021.