Planning application
25/08827/FULL
Top Flat 27 Alma Square NW8 9PY
Proposal
Mansard roof extension to top floor flat.
As published by the council, reference 25/08827/FULL
Timeline
Dates from the published record
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4 Dec 2025
Received by Westminster
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15 Apr 2026
Decision issued: Application Refused
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20 Jul 2026
Added to PlanIndex
What refusal means
The process from here
The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.
Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.
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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26/00662/FULL Awaiting decision
40 Hamilton Gardens London NW8 9PX
Lowering of existing basement and excavation of extension at basement level, creation of new lightwell to front elevation, enlargement of existing rear lightwell and new fenestration within lightwells. Erection of roof extension.
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25/05939/TPO Awaiting decision
35 Hamilton Gardens London NW8 9PX
Lime tree in the front garden: Rempve epicormic growth to crown break at about 5m, and remove lateral epicormic growth growing over the front garden from the stem closest to the building of No.35; retaining shortened (about 0.5m long) vertical epicormic growth at the top of the stem, and retaining epicormic growth (on the same stem) that is growing towards the centre of the tree. the reason we need the work done is to observe the Jewish festival Sukkot when we build a temporary hut for the duration of the festival and reside in it. It is a requirement that the sky should be visible through the roof of the hut, hence the need to prune the tree.
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26/03382/FULL Awaiting decision
18 Alma Square London NW8 9QA
Single storey rear extension to the lower ground floor, with external alterations comprising new and replacement windows, roof lights, installation of solar panels, widening of the lower ground floor steps and installation of front door to lower ground floor.
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26/04624/FULL Awaiting decision
10 Alma Square London NW8 9QD
External alteration to front boundary wall.
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25/05746/TPO Granted
8 Alma Square NW8 9QD
1 x London plane (front): crown reduce to previous, most recent reduction points.
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25/08662/FULL Granted
12 Alma Square NW8 9QA
Amalgamation of two self-contained flats into a single family dwelling; replacement of windows with double-glazed painted timber units and installation of five conservation-style rooflights.
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
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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.