Planning application
26/02964/FULL
5 Buckingham Mews London SW1E 6NR
Proposal
Erection of mansard roof extension, external alterations, replacement windows, and conversion of garage to study room.
As published by the council, reference 26/02964/FULL
Timeline
Dates from the published record
-
6 May 2026
Received by Westminster
-
12 May 2026
Validated
Checked as complete and ready for consideration.
-
21 Jul 2026
Added to PlanIndex
-
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
-
26/02298/PASPV Awaiting decision
3 Buckingham Mews London SW1E 6NR
Installation of solar panels to existing loft roof.
-
26/00159/CLOPUD Withdrawn
3 Buckingham Mews London SW1E 6NR
Installation of solar panels to existing loft roof.
-
25/08897/FULL Granted
21 Stafford Place London SW1E 6NP
Erection of mansard roof extension.
-
25/07745/NMA Awaiting decision
Flat 8 16 Catherine Place London SW1E 6HF
Amendments to planning permission dated 24th January 2023 (RN:22/07667/FULL) for Replacement of existing roof access structure with new roof structure (Flat 8). Namely, to remove one rooflight and alterations to the side casement window.
-
25/05074/ADLBC Granted
1 Palace Street And 1 - 3 Buckingham Gate London SW1E 6JP
Detail of a written, drawn and photographic report following removal of the paint and areas of detached stucco, and any subsequent further investigation of the condition of the remaining render and underlying substrate; including a) a detailed elevation showing (i) the areas of loose or evidently failing render which have been removed in Phase 1; (ii) the areas of render requiring further intrusive restoration, particularly replacement; and (iii) the areas of render in sound condition and/or requiring only like-for-like in-situ repairs; b) a detailed Condition Report, analysing and recording what has been found, and providing the justification for the works; and c). a detailed Conservation Method Statement for the removal of the existing render, the temporary protection of those sections of render and mouldings to be retained, and for the re-rendering, restoration works and re-painting works pursuant to Condition 3 (a, b and c) of listed building consent dated 13 October 2023 (RN: 23/05763/LBC).
-
25/06649/ADLBC Granted
4 - 5 Buckingham Gate London SW1E 6JP
Details of flagpoles and fixings, and signage and fixings pursuant to Condition 5 (parts iv and v) of listed building consent dated 20 January 2025 (RN: 24/06735/LBC)
Other full applications applications
In Westminster
-
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).
-
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)
-
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).
-
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.
-
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.