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Planning application

17 Belgrave Square London SW1X 8PG

Awaiting decision Westminster 26/03052/ADFULL Approval of Details (Full PP)

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 6 of planning permission dated 18th August 2025 (RN:25/03416/FULL)

As published by the council, reference 26/03052/ADFULL

Application record

Reference
26/03052/ADFULL
Type
Approval of Details (Full PP)
Status
Pending
Received
8 May 2026
Validated
8 May 2026
Ward
Knightsbridge & Belgravia
Postcode
SW1X 8PG

Site history

Applications at this address on the Westminster register

This site has had 15 applications since 2025: 2 approved, 0 refused.

  • 26/05327/ADLBC Decided

    17 Belgrave Square London SW1X 8PG

    Details of windows, doors, garage doors, roof lantern and new lighting and flooring in the principal rooms pursuant to condition 6 of listed building consent dated 18 August 2025 (RN: 25/03417/LBC)

    Submitted 6 Aug 2026
  • 26/04850/ADLBC Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Detailed drawings of garage doors, roof lantern and any new lighting and flooring in the principal rooms pursuant to condition 6 (iii) (iv) (v) of listed building 18th August 2025 (RN:25/03417/LBC)

    Submitted 20 Jul 2026 Conditions
  • 26/04761/ADFULL Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Detailed drawings of windows, doors, garage doors, which should appear as side hung, not up and over and roof Lantern pursuant to condition 6 of planning permission dated 13th December 2019 (RN:18/01324).

    Submitted 16 Jul 2026
  • 26/04710/ADFULL Decided

    17 Belgrave Square London SW1X 8PG

    Details of secure cycle storage and details of how waste and recycling is going to be stored on the site pursuant to condition 16 and 19 of planning permission dated 13th December 2019 (RN:18/01324/FULL)

    Submitted 14 Jul 2026
  • 26/03541/ADLBC Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Detailed drawing of floor build-up of the underfloor heating system; pursuant to condition 12 of Listed building consent dated 30th May 2025 (RN 25/02106/LBC)

    Submitted 29 May 2026 Conditions
  • 26/03058/ADLBC Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 12 of planning permission dated 18th August 2025 (RN:25/03417/LBC )

    Submitted 8 May 2026 Conditions
  • 26/03059/ADLBC Awaiting decision

    17 Belgrave Square London SW1X 8PG

    detailed drawings at a scale of 1:10 and sections at 1:5 of Windows, Doors, Garage Doors, which should appear as side hung, not up and over; Roof Lantern and any new lighting and flooring in the principal rooms pursuant to discharge of condition 6 of listed building consent dated 21st August 2025 (RN: 25, 03417/LBC).

    Submitted 8 May 2026 Conditions
  • 26/03054/FULL Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Reconfiguration and alteration of the area between the main building and the Mews, including the erection of a pergola structure, alterations to the rear annex openings, updated rear garden layout.

    Submitted 8 May 2026 Full applications
  • 26/03051/LBC Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Removal of Condition 10 of listed building consent dated 18th August 2025 (RN:25/03417/LBC) for: Replacement and erection of five air condenser units within acoustic enclosure on main roof of 17 Belgrave Square, two new air condenser units within two separate enclosures on rear ground floor terrace to 17 Belgrave Mews West and internal air conditioning units. Internal and external alterations, including alteration to conservatory, internal layout changes, installation of underfloor heating system, and removal and replacement of floorboards, doors and MEP services namely, to remove the requirement to carry out a paint analysis of the principal rooms.

    Submitted 8 May 2026 Heritage and listed buildings
  • 26/03053/ADFULL Awaiting decision

    17 Belgrave Square London SW1X 8PG

    Details of the elevations and sections of the new windows (scaled 1:10) showing integral glazing bars and of the new external doors (scaled 1:10) showing integral glazing bars pursuant to condition 4 of planning permission dated 21st August 2025 (RN: 25/04566/FULL) Linked to 26/03061/ADLBC.

    Submitted 8 May 2026 Full applications

Timeline

Dates from the published record

  1. 8 May 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 3 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Westminster took a median of 91 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Montagu Evans LLP Agent, registered in London

Active · incorporated 2005 · London

1,345 applications on PlanIndex · across 131 councils · 97% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

10 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 17 Belgrave Square London SW1X 8PG

    26/03058/ADLBC Submitted 8 May 2026 50 yards away

    89% historically approved · decision due ~3 Jul

    Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 12 of planning permission dated 18th August 2025 (RN:25/03417/LBC )

    Awaiting decision Conditions 10 docs

  • 17 Belgrave Square London SW1X 8PG

    26/03059/ADLBC Submitted 8 May 2026 50 yards away

    89% historically approved · decision due ~3 Jul

    detailed drawings at a scale of 1:10 and sections at 1:5 of Windows, Doors, Garage Doors, which should appear as side hung, not up and over; Roof Lantern and any new lighting and flooring in the principal rooms pursuant to discharge of condition 6 of listed building consent dated 21st August 2025 (RN: 25, 03417/LBC).

    Awaiting decision Conditions Windows or glazing 33 docs

  • 17 Belgrave Square London SW1X 8PG

    26/03053/ADFULL Submitted 8 May 2026 50 yards away

    88% historically approved · decision due ~10 Jul

    Details of the elevations and sections of the new windows (scaled 1:10) showing integral glazing bars and of the new external doors (scaled 1:10) showing integral glazing bars pursuant to condition 4 of planning permission dated 21st August 2025 (RN: 25/04566/FULL) Linked to 26/03061/ADLBC.

    Awaiting decision Full applications Windows or glazing 10 docs

  • 17 Belgrave Square London SW1X 8PG

    26/02370/NMA Submitted 10 Apr 2026 50 yards away

    93% historically approved · decision due ~5 Jun

    Amendments to planning permission dated 13th December 2019 (RN: 18/01324/FULL) for Demolition of annexe building and replacement with rear extensions to 17 Belgrave Square and excavations to create pool hall extension under garden of 17 Belgrave Square and basement beneath mews property; all in connection with the use of the mews property and 17 Belgrave Square as two single family dwelling houses. Namely to allow proposed reconfiguration and enhancement of the area between the Main House and the Mews, including the erection of a pergola structure, minor alterations to the rear annex openings, and updated rear garden layout.

    Awaiting decision Amendments Extension Demolition 26 docs
    Domestic

  • 17 Belgrave Square London SW1X 8PG

    26/02371/LBC Submitted 10 Apr 2026 50 yards away

    90% historically approved · decision due ~5 Jun

    Internal alterations.

    Awaiting decision Heritage and listed buildings 28 docs

  • 17 Belgrave Square London SW1X 8PG

    26/04761/ADFULL Submitted 16 Jul 2026 50 yards away

    89% historically approved · decision due ~10 Sep

    Detailed drawings of windows, doors, garage doors, which should appear as side hung, not up and over and roof Lantern pursuant to condition 6 of planning permission dated 13th December 2019 (RN:18/01324).

    Awaiting decision Windows or glazing

In Westminster

  • 26/06234/FULL Decided

    40 Grosvenor Place London SW1X 7HJ

    Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

    Received 11 Sep, published by the council 18 Sep 2026 Full applications
  • 26/06015/FULL Decided

    129 Saltram Crescent London W9 3JT

    Erection of a two-storey rear extension.

    Received 3 Sep, published by the council 11 Sep 2026 Full applications
  • 26/07382/FULL Awaiting decision

    90 Gloucester Place London W1U 6HS

    Use of the building as an embassy (sui generis)

    Received 28 Oct, published by the council 2 Nov 2026 Full applications
  • 26/07363/FULL Awaiting decision

    36 Kilravock Street London W10 4HX

    Demolition of existing rear/side extension and construction of a new extension together with new glazing and doors, and changing the existing rooflights to the rear roof slope with new rooflights.

    Received 28 Oct, published by the council 2 Nov 2026 Full applications
  • 26/07371/FULL Awaiting decision

    8A Randolph Road London W9 1AN

    Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07372/LBC)

    Received 28 Oct, published by the council 2 Nov 2026 Full applications