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Planning application

11A Belgrave Square London SW1X 8PH

Granted Westminster 25/09302/CLEUD Certificate of Lawfulness (existing)

Works: Demolition

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Internal and external works including demolition of partition walls, fixtures and fittings, and lightwell excavation at lower ground level (Confirmation of lawful implementation of the planning permission dated 21st September 2022 (RN: 22/01791/FULL) for excavation works to lower ground floor and basement to achieve swimming pool depth and new storey; relocation of existing mechanical ventilation plant within the existing roof void with two grilles in roof; new ventilation shaft and metal grating in the front lightwell.

As published by the council, reference 25/09302/CLEUD

Application record

Reference
25/09302/CLEUD
Type
Certificate of Lawfulness (existing)
Status
Decided
Decision
Granted As published: Application Permitted
Received
23 Dec 2025
Validated
23 Dec 2025
Decided
11 Mar 2026
Ward
Knightsbridge & Belgravia
Decision by
Delegated Decision
Postcode
SW1X 8PH

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2025: 1 approved, 0 refused.

  • 26/05045/LBC Decided

    11A Belgrave Square London SW1X 8PH

    Alteration of the existing roof and layout alterations to the loft level to create a concealed terrace area and additional plant space along with associated internal alterations.

    Decided 16 Sep 2026 Heritage and listed buildings
  • 26/05044/FULL Decided

    11A Belgrave Square London SW1X 8PH

    Alteration of the existing roof and layout alterations to the loft level to create a concealed terrace area and additional plant space along with associated internal alterations.

    Submitted 28 Jul 2026 Full applications

Timeline

Dates from the published record

  1. 23 Dec 2025

    Received by Westminster

  2. 11 Mar 2026

    Decision issued: Application Permitted

  3. 20 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Savills Limited Agent, registered in London

Active · incorporated 1987 · London

2,475 applications on PlanIndex · across 194 councils · 92% granted

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Documents

Plans, drawings, consultee responses and the officer's report

11 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Westminster granted permission on 11 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 50 Wilton Crescent London SW1X 8RX

    25/09226/FULL Submitted 19 Dec 2025 50 yards away

    Demolition and rebuilding of closet wing to create lift to third floor.

    Granted Full applications Demolition 34 docs

  • 50 Wilton Crescent London SW1X 8RX

    25/09227/LBC Submitted 19 Dec 2025 50 yards away

    Demolition and rebuilding of closet wing to create lift to third floor.

    Granted Heritage and listed buildings Demolition 29 docs

  • 50 Wilton Crescent London SW1X 8RX

    25/08955/FULL Submitted 9 Dec 2025 50 yards away

    88% historically approved · decision due ~3 Feb

    Erection of Georgian-style orangery on first-floor rear terrace.

    Awaiting decision Full applications Extension 20 docs

  • 11 Belgrave Square London SW1X 8PP

    22/01921/ADLBC Submitted 22 Mar 2022 50 yards away

    Details of a condition survey and schedule of repair works for the windows; and a method statement in relation to stonework repairs pursuant to conditions 4(a) and 6 of listed building consent dated 29 January 2021 (20/07063/LBC).

    Granted Conditions Windows or glazing 8 docs

  • 50 Wilton Crescent London SW1X 8RX

    25/08956/LBC Submitted 9 Dec 2025 50 yards away

    90% historically approved · decision due ~3 Feb

    Erection of Georgian-style orangery on first-floor rear terrace. [Linked to 25/08955/FULL]

    Awaiting decision Heritage and listed buildings Extension 16 docs

  • 3 Wilton Terrace London SW1X 8RR

    07/05031/TCA Submitted 7 Jun 2007 50 yards away

    1 x False Acacia (Rear): Removal. 1 x Prunus (Rear): Removal.

    Withdrawn Trees 1 doc

In Westminster

  • 26/07468/CLOPUD Awaiting decision

    14 - 16 Great Portland Street London W1W 8QW

    Confirmation the demolition of the existing outrigger structure at fifth floor level (the Proposed Works) constitutes the lawful commencement of development pursuant to the Permission.

    Received 3 Nov, published by the council 5 Nov 2026 Lawful development
  • 26/07423/CLOPUD Awaiting decision

    103 Elgin Avenue London W9 2NP

    Painting of the decorative stonework, window frames and doors on the front elevation and front boundary wall

    Received 2 Nov, published by the council 4 Nov 2026 Lawful development
  • 26/07454/CLOPUD Awaiting decision

    10 Stratton Street London W1J 8LG

    Changes to existing windows and doors

    Received 2 Nov, published by the council 5 Nov 2026 Lawful development
  • 26/07381/CLEUD Awaiting decision

    Ground Floor Rear Flat 4 Mozart Street London W10 4LA

    Use of the ground floor rear flat as short-term visitor accommodation.

    Received 28 Oct, published by the council 5 Nov 2026 Lawful development
  • 26/07339/CLOPUD Awaiting decision

    123 Victoria Street London SW1E 6DE

    Use of part of ground floor reception area within Class E including, but not limited to, a retail café (Class E(a)).

    Received 27 Oct, published by the council 30 Oct 2026 Lawful development