Planning application
26/04399/FULL
38 Grosvenor Square London W1K 2HW
Proposal
Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04400/LBC)
As published by the council, reference 26/04399/FULL
Timeline
Dates from the published record
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2 Jul 2026
Received by Westminster
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
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
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26/04400/LBC Awaiting decision
38 Grosvenor Square London W1K 2HW
Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04399/FULL)
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26/02576/FULL Awaiting decision
38 Grosvenor Square London W1K 2HW
Temporary pop-up exhibition (Use Class F1) for a period of 18 months.
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25/08787/ADFULL Granted
35 - 37 Grosvenor Square London W1K 2HN
Details of Supplementary Acoustic Report pursuant to condition 7 of planning permission dated 30 September 2024 (RN: 24/05532/FULL)
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25/06638/TELCOM Granted
Communications Station 39 - 44 Grosvenor Square London W1K 2HP
Removal of the existing 3no. antennas and installation of replacement 3no. antennas two of which located on new freestanding frames and ancillary development thereto including 1.1m freestanding handrail.
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26/02805/LBC Awaiting decision
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.
-
26/03449/ADFULL Awaiting decision
34 Grosvenor Square London W1K 2HD
Details of new french doors pursuant to condition 4 of planning permission dated 17 March 2026 (RN: 25/08464/FULL)
Other full applications applications
In Westminster
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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).
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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)
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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).
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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.
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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.