Conversion of existing garage into a habitable accommodation; construction of ground floor rear extension with roof light; roof light on front elevation; enlarged rear dormer window; and alterations to windows and doors.

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 works to enlarge and alter dwellinghouse (Class C3).

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).

Amendments to planning permission dated 6 September 2023 (23/04870/FULL) ) for conversion of ground floor garage to habitable accommodation and erection of mansard extension for use in connection with the existing first floor flat (Unit 8); and extension to the rear first floor to existing flat, Unit 2 [Site includes rear of 25-27 Catherine Place]; namely, amendment to the ground floor front window to provide a triple paned window.

Infilling of an existing window in the front 'turret' feature and the creation of two new timber framed casement windows; replacement timber garage door; replacement front door; replacement of windows on the western side of the existing 'turret' structure; creation of new windows on the eastern side of the existing 'turret' structure at ground, first and second floor, formed by altering the alignment of the front facade at ground and first floor so that it corresponds with the alignment; alteration of the front facade at first floor level to reconfigure windows, and infill existing window spaces with brick accordingly; and creation of a new concrete coping between first and second floor to match existing.

Variation of Condition 1 of planning permision dated 16 October 2023 (RN: 23/05842/FULL), which itself varied planning permission dated 22 December 2022 (RN: 22/06621/FULL) for: Reconfiguration of two residential units to form one unit within Nos. 25, 26 and 48; and new residential unit within No. 49; installation of four condenser units, two on each of the roofs of Nos. 25 and 26; and extension at rear third and fourth floor level of No. 25 and associated works (site includes 25-26 Chester Square and 49-48 Eaton Mews South). NAMLEY, to allow works to front lower ground floor including new York stone paving to lightwell with single step below external staircase, new timber sash window with sidelights, new security railings to both windows in lightwell at no. 25, to match no. 26 existing railings; new York stone paving at no. 26, lightwell, and new Portland stone to both no. 25 and no. 26; rear elevation works include new glazing and glazing bar layout to external door to rear elevation, omit proposed screen between 25 and 26 terraces, new metal railings to coping at no. 25 terrace, and new double dormer; new front door, garage gate and associated fanlights at no. 48.

Works to front lower ground floor including new York stone paving to lightwell with single step below external staircase, new timber sash window with sidelights, new security railings to both windows in lightwell at no. 25, to match no. 26 existing railings; new York stone paving at no. 26, lightwell, and new Portland stone to both no. 25 and no. 26; rear elevation works include new glazing and glazing bar layout to external door to rear elevation, omit proposed screen between no. 25 and no. 26 terraces, new metal railings to coping at no. 25 terrace and new double dormer; new front door, garage gate and associated fanlights at no. 48; internal alterations; and associated works (site includes 25-26 Chester Square and 49-48 Eaton Mews South). (Amendments to previously granted Listed Building Consent dated 22 December 2022 RN: 22/06622/LBC).

Enlargement of rear lightwells and erection of rear extensions at lower ground floor, use of garage as habitable accommodation and associated replacement of garage door with window, replacement windows in rear extension, replacement rooflights, erection of storage/plant enclosure to rear, erection of trellis to rear boundary wall, removal of tree in front garden; alterations to front gate and railings and associated landscaping as well as internal alterations across all levels. (Linked to 22/08125/LBC)

Enlargement of rear lightwells and erection of rear extensions at lower ground floor, use of garage as habitable accommodation and associated replacement of garage door with window, replacement windows in rear extension, replacement rooflights, erection of storage/plant enclosure to rear, erection of trellis to rear boundary wall, removal of tree in front garden; alterations to front gate and railings and associated landscaping as well as internal alterations across all levels. (Linked to 22/08124/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 23/04725/FULL)