Planning application
25/09151/FULL
Ground Floor Flat 57 Fifth Avenue London W10 4DL
Proposal
Erection of a single storey rear side extension at ground floor level.
As published by the council, reference 25/09151/FULL
Timeline
Dates from the published record
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18 Dec 2025
Received by Westminster
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27 Mar 2026
Decision issued: Application Permitted
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20 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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25/06856/FULL Awaiting decision
Ground Floor Flat 57 Fifth Avenue London W10 4DL
Erection of a single storey rear extension at ground floor level.
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25/05645/FULL Granted
48 Huxley Street London W10 4QQ
Erection of single storey rear infill extension with three roof lights, two roof lights to the outrigger roof slope and one roof light to the rear roof slope
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26/04182/LBC Awaiting decision
86 Fifth Avenue London W10 4DP
Internal alterations, making good of existing timber frame glass conservatory at the rear, new conservation rooflight in the GF rear projection roof, making good and upgrading single glazed timber sash windows with slimline double glazed panes on existing frames, new timber frame french doors at the GF rear projection, new window to side wall of GF rear projection, main door to be painted in a dark subdued colour and chimney breasts preserved and reclaimed victorian fireplaces to be installed
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26/00032/LBC Refused
86 Fifth Avenue London W10 4DP
Replacement of single glazing with double glazing, replacement of an existing uPvc window to a timber frame french door on the rear wall of the existing rear projection, reinstatement of window to side wall of rear projection, installation of conservation roof light to roof of rear projection, removal of two chimney breasts retaining the chimney stacks and internal alterations. (Linked to 26/00031/FULL)
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26/00031/FULL Granted
86 Fifth Avenue London W10 4DP
Replacement of single glazing with double glazing, replacement of an existing uPvc window to a timber frame french door on the rear wall of the existing rear projection, reinstatement of window to side wall of rear projection, installation of conservation roof light to roof of rear projection, removal of two chimney breasts retaining the chimney stacks and internal alterations. (Linked to 26/00032/LBC)
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25/09206/FULL Awaiting decision
92 Fifth Avenue London W10 4DP
Replacement of existing timber sashes to front and rear elevations with new, slimline double-glazed timber sashes. (Linked to 25/09207/LBC)
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.