6 Upper Wimpole Street London W1G 6LG Data via plota.co.uk
26/04432/ADFULL - Approval of Details (Full PP)
Pending
Proposal
Details of a risk assessment to identify the potential risks associated with any contamination pursuant to Condition 4 of planning permission granted at appeal dated 22nd December 2025 (RN:APP/) Data via plota.co.uk
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View original council record ↗Last checked
Application progress
✓
Received
3 Jul 2026
Decision
Expected by 28 Aug 2026
This application is under consideration - no decision has been issued yet. A decision is expected by 28 Aug 2026.
Documents 13
Statements & assessments 3
Application forms 2
Other documents 8
PDF
RECEIPT OF APPLICATION
Other · 6 Jul 2026
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PDF
ATTACHMENTSUMMARY
Background Papers · 3 Jul 2026
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PDF
SITE INVESTIGATION REPORT
Other · 3 Jul 2026
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PDF
STRUCTURAL ENGINEER EMAIL
Other · 3 Jul 2026
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PDF
RADON RESULTS
Other · 3 Jul 2026
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PDF
ANALYTICAL REPORT
Other · 3 Jul 2026
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PDF
REPORT RML 9518 - MARYLEBONE_COMPRESSED
Other · 3 Jul 2026
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PDF
COVER LETTER - CONDITION 4 (FOURTH FLOOR)
Other · 3 Jul 2026
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Associated applications 3
Part of
Conditions 8 discharged · 4 awaiting decision
- ConditionsDetails of a risk assessment to identify the potential risks associated with any contamination…This application26/04432/ADFULL
Show 1 more · 1 approved
Site constraints 8
Grade II listed: 7, Upper Wimpole Street W1
List entry 1066200 · 8 m from the pin · 40 more listed buildings within 150 m (7 Grade II*, 33 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other 40 with distances
- 21 m1-6, Upper Wimpole Street W1Grade II
- 35 m14-23, Upper Wimpole Street W1Grade II
- 36 m8-13, Upper Wimpole Street W1Grade II
- 37 m24, Upper Wimpole Street W1Grade II
- 43 m25, Upper Wimpole Street W1Grade II
- 49 m26, Upper Wimpole Street W1Grade II
- 57 m34, Weymouth StreetGrade II
- 69 m36, Weymouth StreetGrade II
- 70 m101 Harley StreetGrade II
- 75 m115a, Harley Street W1Grade II
- 75 m44 and 45, Wimpole Street W1Grade II
- 76 m42 and 43, Wimpole Street W1Grade II
- 85 m97 and 99, Harley Street W1Grade II
- 87 m43, Weymouth Street W1Grade II
- 87 m107 and 109, Harley Street W1Grade II*
- 90 m93, Harley Street W1Grade II
- 94 m111 and 113, Harley Street W1Grade II
- 95 m46-48, Wimpole Street W1Grade II
- 99 m115, Harley Street W1Grade II*
- 99 m45-49, Weymouth StreetGrade II
- 102 m39, Wimpole Street W1Grade II
- 109 m91, Harley Street W1Grade II
- 114 m100 and 102, Harley Street W1Grade II
- 114 m98, Harley Street W1Grade II
- 114 m96, Harley Street W1Grade II
- 116 m104, Harley Street W1Grade II
- 117 m92 and 94, Harley Street W1Grade II*
- 119 m106, Harley Street W1Grade II*
- 120 mNos. 33 to 41, Devonshire PlaceGrade II
- 120 m108, Harley Street W1Grade II
- 121 m90, Harley Street W1Grade II
- 126 m110 and 112, Harley Street W1Grade II
- 127 m121, Harley Street W1Grade II*
- 128 m51, Wimpole Street W1Grade II
- 130 m83 and 85, Harley Street W1Grade II*
- 131 m6-12, DEVONSHIRE PLACE W1 (See details for further address information)Grade II
- 136 m88, Harley Street W1Grade II*
- 142 m90a, Harley Street W1Grade II
- 142 m86, Harley Street W1Grade II
- 145 m53, Wimpole Street W1Grade II
Harley Street conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
2 Article 4 directions
Article 4 Basement Development Permitted Rights Removed · Article 4 Direction Class E To C3 In Central Activities Zone. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Archaeological priority area: City of Westminster APA 2.6
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Also on the record
Scheduled monument 220 m away: A subterranean commercial ice-well (City of Westminster), Park Crescent West, W1; Inside the City of Westminster built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt
Checked on 11 September 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
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Important details
- Council
- Westminster
- Application type
- Approval of Details (Full PP)
- Postcode
- W1G 6LG
- Received
- 3 Jul 2026
- Validated
- 3 Jul 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 28 Aug 2026
- Applicant
- Show
- Agent
- Boyer Planning - London
Public comments
No public comments yet.
Last counted 12 Sept 2026
Consultation & key dates
- Alt. reference
- PP-15024248
- 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
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% 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 81% approved vs 90% nationally.
One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application.
View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
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6 Upper Wimpole Street London W1G 6LG
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Referenced application
Council archive
6 Upper Wimpole Street London W1G 6LG
Extensions and internal and external alterations to the existing property to facilitate the use as a single family dwelling, including the erection of a mansard roof extension at 6 Upper Wimpole Street and extension of the basement (Linked with 24/06469/LBC)
- Received
- 17 Sep 2024
- Outcome
- Pending