Planning application
26/00819/ADFULL
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Proposal
Details of facing materials (windows and secondary glazing) pursuant to Condition 5 of planning permission dated 22 September 2021 (RN: 20/07605/FULL)
As published by the council, reference 26/00819/ADFULL
Timeline
Dates from the published record
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11 Feb 2026
Received by Westminster
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31 Mar 2026
Decision issued: Application Permitted
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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
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25/05906/ADFULL Awaiting decision
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Details of Shopfronts pursuant to condition 7 (b) of planning permission dated 22nd september 2021 (RN:20/07605). Linked with 25/06144/ADLBC
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25/08135/ADFULL Awaiting decision
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Detailed drawings of the New facades typical details at all levels including roof level plant and Shopfronts pursuant to condition 7a, b of planning permission dated 21st September 2021 (RN 20/07605/FULL) (Linked to 25/08364/ADLBC)
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26/00817/ADFULL Awaiting decision
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Details of new facades - typical details at all levels including roof level plant pursuant to condition 7 (part a) of planning permission dated 22 September 20221 (RN: 20/07605/FULL)
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26/00818/ADFULL Awaiting decision
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Details of facing materials (balustrade details) pursuant to condition 5 of planning permission dated 22 September 2021 (RN:20/07605/FULL)
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26/01323/ADFULL Awaiting decision
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Details of new facades and shopfronts pursuant to Condition 7 of planning permission dated 21 September 2021 (RN: 20/07605/FULL)
-
26/00816/ADFULL Granted
Pegasus House 37 - 43 Sackville Street London W1S 3EH
Details of proposed timber windows for the retained facades pursuant to condition 7 (part) of planning permission dated 22 September 2021 (RN: 20/07605/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.