Planning application
25/06740/FULL
20 Upper Grosvenor Street London W1K 7PB
Proposal
Use of the third and fourth floor as offices (Class E). (LAND USE SWAP WITH 21 LEES PLACE (REF: 25/06937/FULL)
As published by the council, reference 25/06740/FULL
Timeline
Dates from the published record
-
19 Sep 2025
Received by Westminster
-
24 Sep 2025
Validated
Checked as complete and ready for consideration.
-
7 Apr 2026
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
-
26/00655/FULL Granted
31 Culross Street London W1K 7HF
Alterations to the front elevation at ground floor level, replacement of rear ground floor level extension with new access doors at rear ground floor level and replacement of the flat roof.
-
26/01955/ADLBC Awaiting decision
94 Park Lane London W1K 7TD
Details of the installation of screening surrounding the plant to be coloured dark grey pursuant to Condition 4 of listed building consent dated 15 August 2025 (RN25/03030/LBC) (Linked 26/01952/ADFULL)
-
26/01952/ADFULL Awaiting decision
94 Park Lane London W1K 7TD
Details of the installation of screening surrounding the plant to be coloured dark grey pursuant to Condition 6 of planning permission dated 15 August 2025 (RN25/02686/FULL) (Linked 26/01955/ADLBC)
-
25/08898/ADLBC Granted
94 Park Lane London W1K 7TD
Details of damp-proofing system pursuant to condition 3 of listed building consent dated 22 August 2023 ( RN:23/03564/LBC)
-
26/01957/ADLBC Awaiting decision
95 Park Lane London W1K 7TE
Details of the installation of screening surrounding each grouping of plant to be coloured dark grey and construction details to include materiality and opening mechanisms of the access hatch pursuant to Conditions 3 and 5 of listed building consent dated 17 July 2025 (RN25/03227/LBC) (Linked 26/01956/ADFULL)
-
26/01956/ADFULL Awaiting decision
95 Park Lane London W1K 7TE
Details of the installation of screening surrounding each grouping of plant to be coloured dark grey and construction details to include materiality and opening mechanisms of the access hatch pursuant to Conditions 6 and 8 of planning permission dated 17 July 2025 (RN25/02688/FULL) (Linked 26/01957/ADLBC)
Other full applications applications
In Westminster
-
26/04824/ADFULL Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Detailed design and specification of new blinds to NZH based on mock-up trials on-site. pursuant to condition 32 (i) of planning permission dated 8th April 2024 (23/00571/FULL).
-
26/04829/ADFULL Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Details of external and internal signage strategy pursuant to Condition 33(E) of planning permission dated 8th April 2024 (RN: 23/00571/FULL)
-
26/04841/ADFULL Granted
29 Henstridge Place London NW8 6QD
Details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 18th November 2025 (RN:25/06159).
-
26/04989/FULL Awaiting decision
1 Kildare Terrace London W2 5JT
Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.
-
26/04986/FULL Awaiting decision
Inver Court Inverness Terrace London W2 6JB
Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.