Amendments to planning permission dated 23 December 2022 (RN: 22/05428/FULL) for 'Two-storey extension including roof-level plant along the Bressenden Place façade to provide a new office entrance pavilion (Class E), the provision of Class E office / retail accommodation, remodelling of the crown of Portland House and creation of a setback rooftop extension to provide office amenity (Class E) and an outdoor terrace, reconfiguration of the second floor plant accommodation fronting Cardinal Place, relocation of the zephyr on Bressenden Place, provision of cycle parking, public realm and associated works including window replacement and the application of a new façade treatment', NAMELY to enable the removal of specified louvres, relocation of the generator, façade updates at ground floor level, installation of safety balustrading, relocation of the consented UKPN access, creation of a separate ground floor access for the crown amenity space and installation of additional sliding doors at Level 30.

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.

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)

Confirmation that the planning permission dated 23.09.2020 under reference 20/04785/FULL for Use of building as a single dwellinghouse (Class C3); excavation of a basement extension under house and part of rear garden; installation of replacement windows and doors; alterations to front forecourt including new garage entrance; alteration and extension to side extensions; alterations to rear lower ground floor terrace; and erection of lift overrun at roof level, has been lawfully commenced and it is lawful to continue with that development.

Reconfiguration of existing apartments, including replacement and upgrading and refurbishment of some of the external windows, addition of air source heat pumps, mechanical ventilation plant and photovoltaic panels at roof level, new amenity spaces to the basement and fifth floor levels, infilling at the rear of the building at basement, fourth and fifth floors to extend apartments and to the north at fourth floor level to extend Apartment 24, new extension at rear to house the new lift and services duct from basement to roof level, and a new fire escape entrance in Hallam Street.

Variation of Condition 1 and 11 of planning permission dated 20 October 2022 (RN: 22/04903/FULL) for the demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement level for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works; and amendments to car parking provision (retention of the public car park), alterations to the cycle parking provision and basement layouts and reduction in flexible commercial floorspace; namely, design modifications to the Carlton House Terrace elevation including an additional entrance, pavement lights, replacement railings and re-alignment of a section of the south facade; alterations to the lower ground floor glazing on the west elevation, a new stairwell and platform lift to roof terrace (level 10), widening of central core to accommodate emergency access and fire-fighting lifts, realignment of level 10 balustrade and alterations to south-west lift overrun and amendment to the wording of Condition 11 to include the word 'pergolas'.

Amendments to planning permission dated 21 June 2023 (RN: 23/02625/FULL) for 'Erection of a mansard roof extension to existing house and alterations to front and rear elevations'. Namley, to remove, refurbish and reuse the existing window at ground floor level (WG2.1); to preserve and restore the existing garage doors (DG5.1); to re-use and refurbish the existing hopper and install a new downpipe; replacement of two rooflights with one smaller rooflight at roof level; and internal alterations.

Variation of Conditions 1 and 13 of planning permission dated 06 January 2022 (20/05147/FULL) for part demolition of rooftop plant room and creation of a single storey roof extension at Brettenham House to provide B1 office floorspace; associated creation of terraces to the north and south part of the roofs; replacement and relocation of roof plant to basement level at Brettenham House; creation of a new office entrance to Savoy Street at basement level one of Brettenham House; refurbishment of ground floor shopfronts at Brettenham House on Lancaster Place facade; provision of cycle parking and associated facilities in the basement of Brettenham House; replacement of all the external windows and associated facade maintenance and cleaning and associated works at Brettenham House and 1 Lancaster Place NAMELY; alterations to the design of Savoy Street elevation, new accessible entrance to Savoy Street elevation, alterations to the cycle service and basement layout and UKPN substation access.

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.