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.

Erection of a Mansard extension to mews, alterations to mews facade, with new windows and doors to internal light well and front courtyard, and internal alterations, in conjunction with creating a separate 3-bedroom family dwelling to mews.(Linked with 23/07346/FULL)

External works to pavement vault area to provide a cycle and refuse store and building services plant room; installation of a rooflight to the rear facing roof slope; repair works to include insulation within the roof of the terrace; thermal insulation of the rear extension, replacement windows; repair the street facing stucco work and bay window at lower ground floor and cracks in the first floor balcony and internal works. (Linked with 23/03226/FULL)

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)

Alterations at Basement level, namely amendments to the distribution of electrical services in Zone 2.1 Area C; extension of trench in Zone 2.1 Area D; and remedial works to the existing trench wall in Zone 5 Area 1.

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

Erection of a mansard roof extension, including internal air conditioning units; New roof light; Timber sash window; Replacement garage door and repositioning of entrance door to front elevation; New internal staircase up to second floor; and other associated work to enlarge and alter dwellinghouse (Class C3).

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.

Installation of powder coated aluminium framed secondary glazing into window reveals within the property; replacement of roof coverings to match existing roofs; replacement of main roof tiles with natural slate tiles; and an asphalt covering on the upper flat section of the main roof and a felt covering on the lower single rear extension roof. (Linked with 23/06960/FULL)