Excavation of a new basement, extension at rear lower ground to first floor levels with mechanical plant and enclosure to the roof of the new extension and installation of double glazed windows. Internal alterations including replacement of lift and dumb waiter within their existing shafts, replacement of window sashes with double glazing and repairs to the roof.

Replacement of both apartment entrance doors; refurbishment front windows; refurbishment of rear windows including replacement of glazing with new single pane glazing; replacement of the roof level condenser unit; and internal alterations. (Linked with 23/06919/FULL)

Internal alterations including replacement kitchen, wc, two bathrooms, addition of partition on the second floor, rearrange partitions on the third floor, replacement of the flat roof cover to include thermal insulation, and metal balustrade.

Internal alterations including reconstruction of staircases, removal and replacement of partitions and other internal works, and installation of rooflights to rear flat roof, external works to paving, works to chimney stack, and external railings

Internal and external alterations including excavations of extended basement floor, erection of replacement rear extensions, formation of roof terraces, replacement of mansard roof extension and installation of mechanical plant at roof level to No.73, alteration and replacement of external railings and new windows and doors, new floor finishes, and internal alterations to all floors. (Linked to 23/00770/FULL)

Replacement rear lower ground floor door with of timber bi-folding doors, retention of rear garden planter and external repairs to the front hard surfacing, rear roof terrace and roof; installation of walk on glazed floor at ground floor; layout alterations; installation of doors, architraves and skirting boards and the repair of the front door; and associated works (partially retrospective). [Linked to 23/04032/FULL]

Erection of a mansard roof extension to enlarge dwellinghouse (Class C3) and associated alterations to internal layout.

Installation of one air conditioning unit at roof level. Internal alterations to Flat 3 at third floor level (Linked with 23/06657/FULL)

Installation of a passenger lift and a new spiral stone stair in the location of the existing redundant secondary staircase; demolition and redevelopment of late 19th century rear addition; courtyard extension to the north side of the property, with Marylebone Mews frontage and use as a member's club (sui generis); alteration of roof-escape to accommodate plant behind a new pitched roof; addition of a replacement stair from second to third floor, following the demolition of late 19th century additions at these levels; and internal alteration and refurbishment, including the upgrading and re-routing of services. (Linked with 23/05228/FULL)

Demolition of existing lower ground rear extension and second floor closet wing extension; Erection of new two storey extension in rear courtyard and replacement second floor closet wing extension; New external stair to front lightwell; Alterations to the existing rear closet wing; Replacement roof and dormers; Remedial structural and maintenance works. Internal alterations, including to partitions.