3 Stanhope Gate London W1K 1AG Data via plota.co.uk

26/04390/NMA - Non-material amendments Pending
Extensions & alterations

Proposal

Amendments to planning permission dated 21 April 2021 (RN: 21/01198/FULL) for the: Replacement windows to 3 Stanhope Gate and 18C Curzon Street elevations from ground to fifth floor with addition of applied external stone window architraves. NAMELY, changes to windows and door frame detail and colour. Data via plota.co.uk

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View original council record ↗

Application progress

✓
Received
2 Jul 2026
Decision
Awaiting decision

This application is under consideration - no decision has been issued yet.

Documents 6

Plans & drawings 4

PDF EXISTING AND PROPOSED NORTH ELEVATION Drawing · 2 Jul 2026 View ↗ PDF GLAZING SCHEDULE 1 OF 2 Drawing · 2 Jul 2026 View ↗ PDF GLAZING SCHEDULE 2OF2 Drawing · 2 Jul 2026 View ↗ PDF EXISTING AND PROPOSED SOUTH ELEVATION Drawing · 2 Jul 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 2 Jul 2026 View ↗

Other documents 1

PDF RECEIPT OF APPLICATION Other · 3 Jul 2026 View ↗

All documents on the council site ↗

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Important details

Council
Westminster
Application type
Non-material amendments
Postcode
W1K 1AG
Received
2 Jul 2026
Validated
2 Jul 2026
Ward
West End
Case officer
Track to view
Target decision
30 Jul 2026
Applicant
Track to view
Agent
Mulroy Architects Ltd

Consultation & key dates

Alt. reference
PP-15055520
Env. assessment
No

Historical activity at this location

31 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2024
Amendments to planning permission dated 21 April 2021 (RN: 21/01198/FULL) for the: Replac…
24/03504/NMA
2022
Use of first floor as two self contanined residential units (Class C3)a)
22/07085/P3JPA
2021 Approved
Replacement windows to 3 Stanhope Gate and 18C Curzon Street elevations from ground to fi…
21/01198/FULL
2017 Approved
Erection of an eighth floor roof extension providing additional floorspace to an existing…
17/06158/FULL
2016 Withdrawn
Erection of an 8th floor extension to provide additional accommodation to the existing 6t…
16/10129/FULL
2016 Refused
Erection of an 8th floor extension to provide additional accommodatlon to the existing 6t…
16/02451/FULL
Within ~100m

Nearby activity

2025 Refused
81 South Audley Street London W1K 1JJ
Alterations to roof including reinstatement of roof profile, increased size of existing r…
25/06003/LBC
2025 Refused
81 South Audley Street London W1K 1JJ
Alterations to roof including reinstatement of roof profile, increase size of existing ro…
25/06002/FULL
2025
4 Red Lion Yard London W1J 5JR
Refurbishment of 4 Red Lion Yard including the creation of a new lightwell atrium, facade…
25/07550/FULL
2025
4 Red Lion Yard London W1J 5JR
Refurbishment of 4 Red Lion Yard including the creation of a new lightwell atrium, facade…
25/07551/LBC
2025
Development Site At 4 And 5 Audley Square, 5-7 Waverton St, 49 Hill Street And 4 Red Lion Yard London W1J 5JR
Refurbishment of 3 Red Lion Yard including the removal of a conservatory roof, provision…
25/07548/LBC
2025
3 Audley Square W1K 1DP
Remove the consented basement, alterations to the roof design to extend and relocate the…
25/07479/LBC
2025 Approved
Leconfield House Curzon Street London W1J 5JB
Repainting of the existing external brick work to black and the repainting of the existin…
25/03984/CLOPUD
2025
Curzon House 21 - 23 Curzon Street London W1J 7TE
Cleaning of external brickwork, low pressure steaming, repairs and redecoration of painte…
25/03459/LBC
2025
Park Lane London
Temporary erection of a sculpture on the central reservation of Park Lane, island 6 adjac…
25/03033/FULL
2025
48 Park Lane London W1K 1PR
Display of one internally illuminated awning measuring 1.708m x 8.883m. (Retrospective)
25/02253/ADV
2024
45 Park Lane London W1K 1PN
Installation of satellite dishes and aerials to the roof of 45 Park Lane
24/06413/FULL
2024
24 Curzon Street London W1J 7TF
Display of X1 flag and flagpole from first floor balcony measuring 1m x 1.5m
24/05194/ADV
2024
Flat 8 Chesterfield House South Audley Street London W1K 1HA
Relocation of exterior air conditioning ventilation grille at third floor level.
24/02274/FULL
2024 Approved
8 Tilney Street London W1K 1AE
Internal and external alterations to the ground floor of 8 Tilney Street to provide separ…
24/00534/FULL
2024
24 Curzon Street London W1J 7TF
Installation of a flagpole at first floor of the front elevation.
24/01660/FULL
2023 Withdrawn
Development Site At 18A Curzon Street And 4, 5 And 6 Stanhope Gate London W1K 1LQ
Erection of a glazed extension (for residential use) at the flat on roof level (level 6)…
23/08626/LBC
2023 Withdrawn
Development Site At 18A Curzon Street And 4, 5 And 6 Stanhope Gate London W1K 1LQ
Erection of a glazed extension (for residential use) to enclose a portion of the existing…
23/08625/FULL
2024 Approved
2 Audley Square London W1K 1DB
1 x London plane: repollard removing 1.5m of growth.
24/00166/TCA
2023 Refused
12 Stanhope Gate London W1K 1AW
Display of a flag measuring 1.5m x 2.5m.
23/08942/ADV
2023
Curzon House 21 - 23 Curzon Street London W1J 7TE
Replacement of a modern timber truss in the bedroom to match the original timber trusses…
23/08182/LBC
2016 Withdrawn
10 Stanhope Gate London W1K 1AW
Internal alterations at ground and first floor levels to create double openings.
16/04230/LBC
2016 Approved
14 - 15 Stanhope Gate London
Variation of Condition 1 of planning permission dated 16th June 2015 (RN:15/03616) for th…
16/01397/FULL
2016 Withdrawn
12 Stanhope Gate London W1K 1AW
Use of fifth floor as office use (Class B1)
16/01763/FULL
2016 Withdrawn
12 Stanhope Gate London W1K 1AW
Use of sixth floor for office purposes (Class B1)
16/01762/FULL
2016 Approved
2 Audley Square London W1K 1DB
Alterations and extension to external fire escape in lightwell.
16/01524/LBC
Westminster
Planning Authority Score
3.7/10
Below average
#209 of 292 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #227 out of 292. Only 27% of applications have the time limit extended, well below the 40% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 79% approved vs 90% nationally.

One of the strictest councils
only 79% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision performance
Based on MHCLG data, 2025
86%
Overall approval rate
Below avg (87%) #200 of 292
79%
Householder approved
Below avg (90%) #279 of 292
53%
Decided in 8 weeks
Below avg (64%) #227 of 292
27%
Extended time limit
Below avg (40%) #43 of 292
86%
Minor dwellings approved
14 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
86%
Change of use approved
140 decided
4,828
Total decisions
669 refused in 2025
Source: MHCLG planning statistics · See full council rankings