6 Upper Wimpole Street London W1G 6LG Data via plota.co.uk
26/04134/ADLBC - Approval of Details (ADLBC)
Pending
Proposal
Details of new external doors, including French doors and those into the courtyard; new roof lanterns and roof lights; new windows; and acoustic enclosure and wall lining for the condensing unit pursuant to condition 5 of appeal decision APP/X5990/Y/25/3371071 dated 22 December 2025. Data via plota.co.uk
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Application progress
✓
Received
23 Jun 2026
Decision
Awaiting decision
This application is under consideration - no decision has been issued yet.
Documents 14
Statements & assessments 1
Plans & drawings 12
PDF
2206WIN09 FLAT ROOF LIGHTS 1-10_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN10 FLAT ROOF LIGHTS 1-5 COPY_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN01 ROOF PLAN_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN02 MAIN HOUSE ELEVATIONS_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN03 COURT YARD ELEVATIONS_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN05 TIMBER WINDOWS_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN06 TIMBER WINDOWS_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN07 METAL WINDOWS_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN08 METAL WINDOWSPDF_COMPRESSED
Drawing · 23 Jun 2026
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PDF
2206WIN04 PLUNGE POOL COURT YARD ELEVATIONS
Drawing · 23 Jun 2026
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PDF
2206WIN11 ACCESS AND ACCOUSTIC_COMPRESSED
Drawing · 23 Jun 2026
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PDF
CONDITION 5 - DETAILED DRAWINGS COVER LETTER
Background Papers · 23 Jun 2026
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Application forms 1
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Important details
- Council
- Westminster
- Application type
- Approval of Details (ADLBC)
- Postcode
- W1G 6LG
- Received
- 23 Jun 2026
- Validated
- 23 Jun 2026
- Ward
- Marylebone
- Case officer
- Track to view
- Target decision
- 18 Aug 2026
- Applicant
- Track to view
- Agent
- Boyer Planning
Consultation & key dates
- Alt. reference
- PP-15029784
- Env. assessment
- No
Historical activity at this location
34 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2025
Approved
Details of Code of Construction Practice pursuant to condition 17 of planning permission…
2025
Approved
Details of Trees - method statement pursuant to Condition 11 of planning permission dated…
2025
Approved
Details of desktop study pursuant to condition 3 (phase 1) of planning permission dated 2…
2024
Extension to the existing basement; replacement of third floor casement rear windows with…
2024
Extension to the existing basement; replacement of third floor casement rear windows with…
2024
Extensions and internal and external alterations to the existing property to facilitate t…
2024
Extensions and internal and external alterations to the existing property to facilitate t…
2023
Trial pits within the vaults to the front of 6 Upper Wimpole Street.
2023
Approved
Confirmation that the lawful use of 6 Upper Wimpole Street and 6 Devonshire Mews South is…
Within ~100m
Nearby activity
2025
Approved
Flat 2 19 Upper Wimpole Street London W1G 6LY
Installation of a new slim double-glazed timber window, painted white within the existing…
2025
Approved
Flat 2 19 Upper Wimpole Street London W1G 6LY
Installation of a new slim double-glazed timber window, painted white within the existing…
2025
41 Devonshire Place London W1G 6JY
Reinstatement of the brick arches to the vaults; the reinstatement of the brickwork bridg…
2025
41 Devonshire Place London W1G 6JY
Reinstatement of the brick arches to the vaults; the reinstatement of the brickwork bridg…
2025
93 Harley Street London W1G 6AD
Installation of X2 external signage plaques
2025
Refused
15 Upper Wimpole Street London W1G 6LS
Infilling of courtyard between the main house and mews house at basement and ground level…
2025
Approved
99 Harley Street London W1G 6AQ
Repairs and rebuilding of front elevation at second and third floor level including alter…
2025
Withdrawn
99 Harley Street London W1G 6AQ
Repairs and rebuilding of front elevation at second and third floor level including alter…
2025
4 Clarke's Mews London W1G 6QN
Installation of one air conditioning unit at roof level
2025
42 Wimpole Street London W1G 8YF
Internal alterations including strip out various bathrooms, installation of a stud wall t…
2025
12 Upper Wimpole Street London W1G 6LW
Display of a non-illuminated estate agents sign measuring 0.60m x 0.90m attached to the r…
2025
113 - 115 Harley Street London W1G 6AP
Installation of replacement steel vent pipe (Linked with 25/01123/FULL).
2025
113 - 115 Harley Street London W1G 6AP
Installation of replacement steel vent pipe (Linked with 25/01124/LBC).
2025
15 Upper Wimpole Street London W1G 6LS
Infilling of courtyard between the main house and mews house at basement and ground level…
2025
15 Upper Wimpole Street London W1G 6LS
Variation of condition 1 of planning permission dated 17 September 2024 (RN:23/07898/FULL…
2024
14 Upper Wimpole Street London W1G 6LR
Relocation of rainwater pipe from rear elevation to Devonshire Street elevation together…
2024
14 Upper Wimpole Street London W1G 6LR
Relocation of rainwater pipe from rear elevation to Devonshire Street elevation together…
2024
14 Upper Wimpole Street London W1G 6LR
Variation of condition 1 of planning permission dated 08 April 2024 (RN: 24/00065/FULL) f…
2024
Approved
8 Upper Wimpole Street London W1G 6LH
Various internal works pursuant to flat refurbishment including removal and replacement o…
2024
Approved
8 Upper Wimpole Street London W1G 6LH
Various internal works pursuant to flat refurbishment including removal and replacement o…
2020
Approved
18 Upper Wimpole Street London W1G 6LX
Replacement installation of air-conditioning unit at roof level within a new acoustic enc…
2020
Approved
34 Weymouth Street London W1G 6NH
External and internal repairs and alterations to existing family dwelling including the i…
2020
Approved
34 Weymouth Street London W1G 6NH
External and internal repairs and alterations to existing family dwelling including the i…
2020
Approved
Flat 2 20 Upper Wimpole Street London W1G 6LZ
Internal alterations including removal of non-original partition walls, replacement bathr…
2020
Refused
107 Harley Street London W1G 6AL
Creation of a new opening at the rear of the ground floor to provide a fire escape onto t…
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
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6 Upper Wimpole Street London W1G 6LG