Planning applications in Westminster

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Extensions & alterations
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Showing 50 of 299 applications
26/02929/NMA 5 May 2026 Pending

Top Flat 48 St Stephen's Gardens London W2 5NJ

Amendments to planning permission dated 9th May 2025 (RN: 25/01380/FULL) forConversion of existing rear flat roof to an external terrace to include ne...

Westminster 5 May 2026
26/02899/FULL 1 May 2026 Pending

4 Matthew Parker Street London SW1H 9NL

Creation of a roof terrace at sixth floor.

Westminster 1 May 2026
26/02918/LBC 1 May 2026 Pending

House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA

Internal alterations at ground floor level within Speakers Court to form accessible and gender-neutral WC facilities and a staff tea-point.

Westminster 1 May 2026
26/02885/ADFULL 1 May 2026 Pending

29 St James's Place London SW1A 1NR

Detailed drawings showing the following alteration(s) to the scheme - removal of the external lights at first floor level of the front facade pursuant...

Westminster 1 May 2026
26/02881/LBC 1 May 2026 Pending

Royal Albert Hall Kensington Gore London SW7 2AP

Upgrading of the loudspeaker system within the auditorium. Additional speakers to be suspended from the ceiling structure and the formation of a numbe...

Westminster 1 May 2026
26/02908/FULL 1 May 2026 Pending

40 Grosvenor Place London SW1X 7HJ

Installation of replacement glass with louvres in one window opening at second floor level on Wilton Street facade.

Westminster 1 May 2026
26/02901/LBC 1 May 2026 Pending

The National Gallery Trafalgar Square London WC2N 5DN

Reconfiguration and refurbishment of cafe and restaurant WC facilities within the Wilkins Building.

Westminster 1 May 2026
26/02893/FULL 1 May 2026 Pending

54 Kilburn Lane London W10 4AH

Erection of a single storey rear infill extension.

Westminster 1 May 2026
26/02886/LBC 1 May 2026 Pending

12 Chester Street London SW1X 7BB

Replacement of existing rear extension at first, second and third with a new rear extension (first to third floor level) with flat roof. Erection of a...

Westminster 1 May 2026
26/02880/LBC 1 May 2026 Pending

26 - 33 Queen's Gardens London W2 3BD

Targeted opening-up works to the third floor ceilings for inspection purposes. The purpose of the proposed works is to enable access to concealed stru...

Westminster 1 May 2026
26/02897/LBC 30 Apr 2026 Pending

17 Cunningham Place London NW8 8JT

Replacement of non-original windows with Fineo slim glazing. (Linked to 26/02896/FULL)

Westminster 30 Apr 2026
26/02896/FULL 30 Apr 2026 Pending

17 Cunningham Place London NW8 8JT

Replacement of non-original windows with Fineo slim glazing. (Linked to 26/02897/LBC)

Westminster 30 Apr 2026
26/02870/FULL 30 Apr 2026 Pending

48 Gloucester Place Mews London W1U 8BD

Refurbishment and reconfiguration of existing mews dwelling including internal alterations, front elevation alterations, roof alterations, replacement...

Westminster 30 Apr 2026
26/02876/FULL 30 Apr 2026 Pending

1 Welbeck Street London W1G 0AR

Erection of an extension at sixth floor of 1-2 Welbeck and associated works.

Westminster 30 Apr 2026
26/02848/ADFULL 29 Apr 2026 Pending

5 Berners Mews London W1T 3AJ

Details of the replacement door (in timber) and the over panel pursuant to conditions 4 and 5 of planning permission dated 23rd May 2024 (24/01752/FUL...

Westminster 29 Apr 2026
26/02822/LBC 29 Apr 2026 Pending

Flat 1 23 Eaton Place London SW1X 8BP

Erection of single-story rear extension and associated works. [Linked to 26/02821/FULL]

Westminster 29 Apr 2026
26/02821/FULL 29 Apr 2026 Pending

Flat 1 23 Eaton Place London SW1X 8BP

Erection of single-story rear extension and associated works. [Linked to 26/02822/LBC]

Westminster 29 Apr 2026
26/02837/ADFULL 29 Apr 2026 Pending

42 Hamilton Terrace London NW8 9UJ

Details of front and rear windows and doors pursuant to Condition 5 of planning permission granted at appeal dated 18 August 2025 (RN: 24/07302/FULL).

Westminster 29 Apr 2026
26/02818/LBC 28 Apr 2026 Pending

17 Hertford Street London W1J 7RS

Replacement of non-original casement windows at Level 03 with timber sash windows; new structure for mansard extension, infill of existing lightwell a...

Westminster 28 Apr 2026
26/02817/FULL 28 Apr 2026 Pending

17 Hertford Street London W1J 7RS

Replacement of non-original casement windows at Level 03 with timber sash windows; new structure for mansard extension, infill of existing lightwell a...

Westminster 28 Apr 2026
26/02805/LBC 28 Apr 2026 Pending

Flat D 42 South Audley Street London W1K 2PT

Replacement of the existing modern wood floor finish in the main living room and part of the hallway.

Westminster 28 Apr 2026
26/02812/LBC 28 Apr 2026 Pending

12 Chesterfield Street London W1J 5JN

Rectification of unauthorised stripout works; exterior works including replacement of tiling, addition of cast iron pipework, installation of pergola ...

Westminster 28 Apr 2026
26/02811/FULL 28 Apr 2026 Pending

12 Chesterfield Street London W1J 5JN

Rectification of unauthorised stripout works; exterior works including replacement of tiling, addition of cast iron pipework, installation of pergola ...

Westminster 28 Apr 2026
26/02816/FULL 28 Apr 2026 Pending

Flat 6 21 - 22 Westbourne Street London W2 2TZ

Replacement of two front-elevation windows at the second floor level with double glazed Critall replacement windows. (Linked to 25/09243/LBC)

Westminster 28 Apr 2026
26/02800/LBC 28 Apr 2026 Pending

17 - 21 South Audley Street London W1K 2NY

Replacement of floorboards, installation of new floor build ups (including a new plywood structural deck), and new floor finishes at ground floor leve...

Westminster 28 Apr 2026
26/02781/ADFULL 27 Apr 2026 Pending

Flat 2 284 Elgin Avenue London W9 1JR

Details of dormer construction, lead detailing and timber sash window pursuant to condition 4 of planning permission dated 18th March 2026 (RN: 25/055...

Westminster 27 Apr 2026
26/02775/FULL 27 Apr 2026 Pending

38 Third Avenue London W10 4RT

Installation of replacement single-glazed timber sash windows to front elevation with new vacuum-glazed timber sash windows painted white; and other a...

Westminster 27 Apr 2026
26/02772/NMA 27 Apr 2026 Pending

87A St John's Wood Terrace London NW8 6PY

Amendments to planning permission dated 12th March 2025 (RN:24/08576/FULL) for Variation of condition 1 of planning permission dated 21st June 2024 (R...

Westminster 27 Apr 2026
26/02774/FULL 27 Apr 2026 Pending

53 Romney Street London SW1P 3RF

Adjust entrance threshold to improve disabled access

Westminster 27 Apr 2026
26/02777/LBC 27 Apr 2026 Pending

Ground Floor 3 Fitzhardinge Street London W1H 6EF

Internal alterations including one new glazed partition off the existing space creating a new meeting room; and other associated works.

Westminster 27 Apr 2026
26/02755/ADFULL 24 Apr 2026 Pending

31 Bloomfield Terrace London SW1W 8PQ

Detailed drawings (elevations at 1:10 and sections at 1:5) of any new windows to no. 31 pursuant to Condition 11 (A) of planning permission dated 24th...

Westminster 24 Apr 2026
26/02761/LBC 24 Apr 2026 Pending

48 Harley Street London W1G 9PU

Internal alterations, in the form of new stud wall partitions, to lower ground plan form following earlier approved works under Listed Building Consen...

Westminster 24 Apr 2026
26/02758/FULL 24 Apr 2026 Pending

8 Whistler Square London SW1W 8BW

Erection of a pergola on the south east corner of 6th floor terrace.

Westminster 24 Apr 2026
26/02759/FULL 24 Apr 2026 Pending

8 Whistler Square London SW1W 8BW

Erection of decorative privacy screens on the east and west elevations of 6th floor terrace.

Westminster 24 Apr 2026
26/02749/ADFULL 24 Apr 2026 Pending

2 Hill Street London W1J 5ND

Details of all new windows and dormer windows with full size glazing bar sections and all new external doors with full size moulding sections pursuant...

Westminster 24 Apr 2026
26/02741/FULL 24 Apr 2026 Pending

16 Eresby House Rutland Gate London SW7 1BG

Replacement of door and side window with double glazed units to match the style and finish of the existing door and window.

Westminster 24 Apr 2026
26/02764/NMA 24 Apr 2026 Pending

4A Abercorn Place NW8 9XR

Amendments to planning permission dated 13th February 2026 (RN:25/06416/FULL) for Exterior alterations to existing building, including introduction of...

Westminster 24 Apr 2026
26/02701/FULL 23 Apr 2026 Pending

4 Matthew Parker Street London SW1H 9NL

Creation of two flat roof terraces at second and fourth floor levels; and other associated works including new handrails, planters, and access doors.

Westminster 23 Apr 2026
26/02711/LBC 23 Apr 2026 Pending

Flat G 13 Westbourne Terrace London W2 3UL

Replacement of single-glazed timber sliding sash windows with vacuum-glazed timber sliding sash windows. (Linked with 26/02710/FULL)

Westminster 23 Apr 2026
26/02710/FULL 23 Apr 2026 Pending

Flat G 13 Westbourne Terrace London W2 3UL

Replacement of single-glazed timber sliding sash windows with vacuum-glazed timber sliding sash windows. (Linked with 26/02711/LBC)

Westminster 23 Apr 2026
26/02726/LBC 23 Apr 2026 Pending

Flat 1 46 Wimpole Street London W1G 8SD

Replacement of 3 bottom sashes. [Linked to 26/02725/FULL]

Westminster 23 Apr 2026
26/02725/FULL 23 Apr 2026 Pending

Flat 1 46 Wimpole Street London W1G 8SD

Replacement of 3 bottom sashes. [Linked to 26/02726/LBC]

Westminster 23 Apr 2026
26/02716/COLBC 23 Apr 2026 Pending

Parkinson House Tachbrook Street London SW1V 2QB

Replacement of fire damaged external windows and doors to flats 60 and 78. [Linked to 26/02715/COFUL]

Westminster 23 Apr 2026
26/02715/COFUL 23 Apr 2026 Pending

Parkinson House Tachbrook Street London SW1V 2QB

Replacement of fire damaged external windows and doors to flats 60 and 78. [Linked to 26/02716/COLBC]

Westminster 23 Apr 2026
26/02626/LBC 21 Apr 2026 Pending

126 Hamilton Terrace London NW8 9UT

Replacement of windows, incorporating true through glazing bars; installation of timber terrace doors to the rear garden; retention of existing intern...

Westminster 21 Apr 2026
26/02625/FULL 21 Apr 2026 Pending

126 Hamilton Terrace London NW8 9UT

Replacement of windows, incorporating true through glazing bars; installation of timber terrace doors to the rear garden; retention of existing intern...

Westminster 21 Apr 2026
26/02656/LBC 21 Apr 2026 Pending

Flat 3 171 Sussex Gardens London W2 2RH

Replacement of rear elevation timber window with double height timber window. (Linked with 25/08595/FULL)

Westminster 21 Apr 2026
26/02619/NMA 21 Apr 2026 Pending

216 Oxford Street London W1C 1DA

Amendments to planning permission dated 21 February 2025 (RN: 24/08991/FULL) for installation of plant on the roof, near the north boundary; external ...

Westminster 21 Apr 2026
26/02629/FULL 21 Apr 2026 Pending

27 Gillingham Street London SW1V 1HP

Erection of a extension at first floor and second floor levels to create ancillary lettable rooms to the public house.

Westminster 21 Apr 2026
26/02615/LBC 21 Apr 2026 Pending

14 Cunningham Place London NW8 8JT

Remove all non original internal doors, architraves, radiators and skirting at lower ground; upvc windows replaced with replica doors, remove the low ...

Westminster 21 Apr 2026
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Data updated 7 May 2026. Source: Westminster planning portal.