Planning application
25/07262/FULL
41 Upper Grosvenor Street London W1K 2NH
Proposal
External alterations including rooftop and rear extension; and reconfiguration and amalgamation of existing residential accommodation (comprising 2 x 2bed and 1 x 1 bed) to provide 3 homes (1 x 2 bed and 2 x 3 bed) (Class C3) at 41 Reeves Mews; external alterations including rooftop and rear extension and terrace, loft conversion and new dormers and enlargement of basement at 41 Reeves Mews; and change of use of existing commercial use (Use Class E) to residential (Use Class C3) at lower ground of 41 Reeves Mews to facilitate shared cycle storage, refuse and plant facilities to serve both 41 Upper Grosvenor Street and 41 Reeves Mews; and associated landscaping across the site. [SITE INCLUDES 41 REEVES MEWS]
As published by the council, reference 25/07262/FULL
Timeline
Dates from the published record
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8 Oct 2025
Received by Westminster
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22 Oct 2025
Validated
Checked as complete and ready for consideration.
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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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25/04585/FULL Granted
41 Reeves Mews London W1K 2EH
Reconfiguration and amalgamation of existing residential accommodation (comprising 2 x 2bed and 1 x 1 bed) to provide 3 homes (1 x 2 bed and 2 x 3 bed); external alterations including rooftop and rear extension and rear terrace, loft conversion, new dormers, enlargement of basement and associated landscaping across the site; and change of use of existing commercial use (Use Class E) to residential (Use Class C3) at lower ground of 41 Reeves Mews [amended description].
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26/04722/FULL Awaiting decision
Flat 11 46 Upper Grosvenor Street London W1K 2NW
Variation of condition 2 of planning permission dated 06 November 2025 (RN: 25/05340/FULL) for the: Replacement of existing windows. (Flat 11, 46 Upper Grosvenor Street). NAMELY, to allow replacement windows constructed in aluminium rather than the original mild steel of the Crittall casements.
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26/01789/ADFULL Awaiting decision
Flat 11 46 Upper Grosvenor Street London W1K 2NW
Detailed drawings of existing and proposed windows with key details pursuant to condition 2 of planning permission dated 6th November 2025 (RN: 25/05340/FULL).
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25/08615/ADFULL Awaiting decision
41 Reeves Mews London W1K 2EH
Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 7 of planning permission dated 29 October 2025 (RN: 25/04585/FULL)
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26/00408/FULL Awaiting decision
30 Grosvenor Square London W1K 6AN
Installation of permanent external planter boxes at ground floor level on the Upper Grosvenor Square elevation and associated works.
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25/05340/FULL Granted
Flat 11 46 Upper Grosvenor Street London W1K 2NW
Replacement of existing windows. (Flat 11, 46 Upper Grosvenor Street)
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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
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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.