Conversion of flat at first, second and third floors into 2 x 1 bedroom flat; Erection of mansard roof extension with dormer window over part of rear roof; Insertion of roof window on side elevation. Erection of bike and bin store in front garden.

External alterations including changes to doors and windows; conversion of garage to habitable space; lowering existing lower ground floor level, vaults and rear garden; alterations to rear wall; and installation of ASHP to rear.

Variation of condition 1 of planning permission dated 19 April 2021 (RN: 20/04541/FULL) for the: Erection of an extension at the rear of 18-22 Wigmore Street at first to fourth floor levels and alterations to the rear roof form to allow conversion of the attic space to provide additional residential floorspace for the existing flats (Class C3), including the infilling of an internal lightwell adjacent to 16 Wigmore Street and the installation of a new lift. Alterations at basement and ground floor level including the infilling of a rear lightwell at basement and ground floor levels. Installation of plant within an associated enclosure at rear first floor level with a green roof over and screened plant on a flat roof at fourth floor level to the rear of 22 Wigmore Street. Alterations to the front of the building including new windows, shopfronts and metal railings at ground floor level. All in connection with the dual / alternative use of the basement, ground and first floors as either office (B1) / retail (A1) or a sui generis use comprising piano showroom, office space, new recital room, piano practice rooms and workshop space and use of the second to new fifth floors as 8 residential units comprising 3 x 1 bed; 4 x 2 bed and 1 x 3 bed. (SITE INCLUDES 18, 20 AND 22 WIGMORE STREET). NAMELY, to allow removal of central core and floors and associated replacement to improve sustainability, acoustic and fire safety performance; modifications to ancillary uses within basement, including provision of ancillary kitchen and restaurant area serving guests of Bechstein Hall; kitchen extract and ductwork to be localised; introduction of entrance gates to main front entrance; minor amendments to plant at the rear; and provision of open pergola walkway on the roof at the rear.

Single storey rear infill extension, installation of roof lights and solar panels to rear roof slope loft conversion, replacement windows to front and rear elevations and associated works.

Alterations to front boundary wall to widen existing gateways and introduction of new driveway; infilling garage door with masonry cavity wall construction complete with window to match others adjacent; lowering of window sill to existing window in front facade and installation of new window to match others adjacent; conversion of existing garage to habitable accommodation; two single storey extensions to rear of property; and removal of two trees.

Conversion of one internal garage to habitable accommodation, formation of new doors and windows to front at ground floor level, Installation of rooflights to main roof, and replacement of windows.

Variation of condition 1 of planning permission dated 12 September 2022 (RN:22/02285/FULL) for the Conversion of garage to habitable living accommodation with new window to front elevation at lower ground floor level, installation of new timber window on side elevation at upper ground floor level; new metal window to the side elevation at lower ground floor level, replacement of existing metal side gate to timber side gate, relocation of rear access stairs, installation of linear walk-on skylights to the rear patio, new balustrade to rear terrace and associated external alterations. Namely, to remove both walk on roof lights to the rear of upper ground floor, installation of rooflight under stairs to rear garden and reduction of terrace depth to match existing

Installation of two new rooflights to rear roof slope, in association with loft conversion; erection of a rear side infill extension at ground floor level; modification of the existing window to a double door on the rear wall of the existing rear extension; installation of window to side wall of rear extension; installation of conservation roof light to roof of lean-to and installation of roof light to roof of rear extension; and installation of door to rear wall of extension. (Linked with 22/06937/LBC)

Erection of two dormer windows to rear associated with loft conversion; erection of extension and formation of window to rear at lower ground floor level; and replacement of garage door to front.

Erection of a orangery style extension to rear, conversion of vaults into bedroom and shower room, replacement of vault door with window and associated external alterations.