Erection of a loft conversion with associated installation of two rooflights to rear roof slope, erection of replacement rear infill extension with three new rooflights, alterations to rear fenestration, reinstatement of front boundary wall railings. Internal alterations including erection and demolition of partitions, installation of a WC under the existing staircase, removal of a chimney breast at first floor only, lowering of first floor ceiling and installation of stair to loft conversion. (Linked with 21/04611/FULL)

Variation of Condition 1 of listed building consent dated 22nd June 2021 (RN 21/00510/LBC) for, 'Erection of rear extensions at second, third and fourth floor levels to incorporate a new lift; demolition and replacement of rear courtyard floor slab, replacement of the existing mansard roof and raising of chimney stacks; demolition and rebuild of two chimney stacks on the mews; replacement of windows; installation of air conditioning units at roof level and under pavement basement vaults; Internal alterations including; installations of Fan Coil Units and services throughout, replacement of chimneypieces; replacement floor finishes, insertion of partitions and redecoration throughout'; NAMELY, to remove existing MDF (non-original) fire surround in the service kitchen and replace with a stone fire surround at basement; Remove existing fire surround in the entrance hall and replace with an antique Georgian timber fire surround; Replace the existing non-original timber balustrade at ground floor with a period detailing balustrade; and Replace the non-original plasterboard ceiling in the glazed link with a plasterboard ceiling and replace the high level cornice with a period profile at ground floor; Replace the existing fire surround in the bedroom/ study with an 18th Century marble chimneypiece; Replace the existing fire surround in the master bathroom with a Regency chimneypiece; and Remove the timber surround and step to the phantom door between the stone staircase and lift lobby at second floor; Existing bedroom 2 fireplace to be carefully removed and stored on site; and Relocate the existing fireplace and grate from the master bedroom to bedroom 2 at third floor; Existing entrance hall fire surround to be relocated to bedroom 4 at fourth floor; and Installation of a new period style entrance lantern on the railings to the front of the building; and security cameras.

Variation of condition 1 of listed building consent dated 19 May 2021 (RN: 20/00447/LBC) which itself varied condition 1 of planning permission dated 21 June 2019 (19/01700/FULL) for the Excavation of basement extension beneath the existing property and part of the garden with associated lightwell and rooflights, demolition and rebuild of existing garage building, erection of single storey first floor side extension, NAMELY, to allow the replacement of window with French doors at front lower ground floor and replacement of internal single door leading to study with sliding doors on lower ground floor.(Linked with 21/04106/FULL)

Erection of rear extension, formation of lightwell and associated excavation to lower ground floor level; glazed conservatory at rear ground floor level with associated balcony and stair; partial demolition of existing closet wing and replacement with raised roof level; installation of dormer window, roof light and AC units at roof level and associated works. Internal alterations, including changes to planform.

Variation of Condition 1 of listed building consent dated 19th July 2018 (RN: 18/02362/LBC) for, 'Demolition of rear facade of Nos. 96-98 Baker Street and front and part rear facades of No. 14 Sherlock Mews, use of first to fourth floors of Nos. 96-98 Baker Street as eight residential flats (Class C3), amalgamation of flats at first and second floors of No. 14 Sherlock Mews into a maisonette (Class C3), erection of replacement shopfronts to Baker Street facade, erection of replacement rear facade to Nos. 96-98 Baker Street, erection of replacement front facade to No. 14 Sherlock Mews, alterations at roof level, and other associated external alterations'; NAMELY, (i) Amendments to the design of the main door of the residential entrance at the Baker Street front elevation; (ii) Amendment to the material finish of the residential entrance to the building at the Baker Street front elevation; (iii) Internal layout changes to 1st - 4th floor flats at 96-98 Baker Street; (iv) Reconfigured exhaust shaft for theatre at 1st floor terrace to the Baker Street rear elevation; (v) Modification to bedroom windows at the Baker Street rear elevation to accommodate exhaust shaft for theatre; (vi) Revised location of access hatch to roof; (vii) Reduced area for clerestory pop-up at Baker Street rear elevation; (viii) Addition of a guard rail at roof level; and (ix) Introduction of external pipework to the Baker Street rear elevation.

Variation of Condition 1 of listed building consent dated 19 July 2018 (RN: 18/02362/LBC) for, 'Demolition of rear facade of Nos. 96-98 Baker Street and front and part rear facades of No. 14 Sherlock Mews, use of first to fourth floors of Nos. 96-98 Baker Street as eight residential flats (Class C3), amalgamation of flats at first and second floors of No. 14 Sherlock Mews into a maisonette (Class C3), erection of replacement shopfronts to Baker Street facade, erection of replacement rear facade to Nos. 96-98 Baker Street, erection of replacement front facade to No. 14 Sherlock Mews, alterations at roof level, and other associated external alterations'; NAMELY, to allow reconfiguration of the existing garage and 14 Sherlock Mews entrance at ground floor, including the replacement of all doors at ground floor with a unified design and appearance; reconfiguration of the internal layouts to levels 1 and 2; unify the 14 Sherlock Mews elevation in brickwork of a consistent colour, bonding and character; replacement of windows; refurbishments to the front facade of the mews house; and associated works.

Demolition of existing three storey rear closet wing and erection of a five storey closet wing and two storey infill extension at lower ground and ground floor level with balcony at ground and terrace at first floor level; Installation of French doors and changes to fenestration to rear; alerations to rear boundary wall; installation of front entrance portico and associated extension of first floor balcony; excavation works at lower-ground floor level including lightwell and front vaults and associated external alterations. Internal alterations, including changes to plan form.

Use of the building as a single dwellinghouse (Class C3). Demolition of existing rear single storey extension and installation of French doors to rear elevation, installation of replacement rear mansard roof windows, and hard and soft landscaping to front and rear gardens. Internal alterations including erection and demolition of partitions, blocking up door to rear two storey extension, removal and replacement of all modern doors, architraves and skirtings, installation of new fireplaces and refurbishment and cleaning of sash windows, cornice at ground and first floors and staircase (linked to 21/03263/FULL).

Retention of railings, door and stairs at rear first floor level in association with the roof terrace. Erection of infill extension to lower ground floor courtyard, demolition of a portion of the rear extension wall on the lower ground floor, installation of replacement rooflight, front door and rear side window. Internal alterations including installation of an internal staircase between the ground floor and lower ground floor, alterations to partitions at lower ground and ground floor, relocation of plant to vaults, installation of a replacement door at lower ground floor, installation of steel glazed door in entrance hall, and replacement of fixtures and fittings throughout (linked to 21/00831/FULL).

Variation of Condition 1 of listed building consent dated 05 June 2020 (RN: 19/08752/LBC) for, 'Erection of rear extensions at second, third and fourth floor levels to incorporate a new lift; demolition and replacement of rear courtyard floor slab, replacement of the existing mansard roof and raising of chimney stacks; demolition and rebuild of two chimney stacks on the mews; replacement of windows; installation of air conditioning units at roof level and under pavement basement vaults; Internal alterations including; installations of Fan Coil Units and services throughout, replacement of chimneypieces; replacement floor finishes, insertion of partitions and redecoration throughout'; NAMELY, to allow the reduction in width of the consented new southern rear windows on the second, third and fourth floors; amendment to consented rear walk on roof light panes in courtyard to align glazing bars with door openings above; installation of a new concrete slab below the paving in the front lightwell; addition of wall lights either side of front light well basement entrance door; addition of security cameras on the front and rear ground floor elevations; installation of an intercom to the right of the main entrance door; new handrail and balusters to staircase between second and fourth floor; landscaping works to the rear courtyard comprising rendering; stone paving; installation of light fixtures and installation of trellis panels and various internal alterations to all floors.