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Planning application

17 Belgrave Square London SW1X 8PG

Granted Westminster 25/06936/LBC Listed Building Consent Application

Works: Windows or glazing

Relates to 25/06935/FULL

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

Proposal

Part refurbishment, part replacement, of the existing windows on all elevations of the building at 17 Belgrave Square and adjacent mews at 17 Belgrave Mews West. (Linked with 25/06935/FULL)

As published by the council, reference 25/06936/LBC

Application record

Reference
25/06936/LBC
Type
Listed Building Consent Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
26 Sep 2025
Validated
22 Oct 2025
Decided
18 Mar 2026
Ward
Knightsbridge & Belgravia
Decision by
Delegated Decision
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
  • 26/03052/ADFULL Awaiting decision

    17 Belgrave Square London SW1X 8PG

    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)

    Submitted 8 May 2026 Full applications
  • 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

Timeline

Dates from the published record

  1. 26 Sep 2025

    Received by Westminster

  2. 22 Oct 2025

    Validated

    Checked as complete and ready for consideration.

  3. 18 Mar 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/06935/FULL Granted

    17 Belgrave Square London SW1X 8PG

    Part refurbishment, part replacement, of the existing windows on all elevations of the building at 17 Belgrave Square and adjacent mews at 17 Belgrave Mews West. (Linked with 25/06936/LBC)

    Decided 18 Mar 2026 Full applications

1 later application on the register refers to this one:

  • 25/06935/FULL Granted

    17 Belgrave Square London SW1X 8PG

    Part refurbishment, part replacement, of the existing windows on all elevations of the building at 17 Belgrave Square and adjacent mews at 17 Belgrave Mews West. (Linked with 25/06936/LBC)

    Decided 18 Mar 2026 Full applications

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

153 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 this grant of permission means

Westminster granted permission on 18 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 heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 17 Belgrave Square London SW1X 8PG

    25/06935/FULL Submitted 26 Sep 2025 50 yards away

    Part refurbishment, part replacement, of the existing windows on all elevations of the building at 17 Belgrave Square and adjacent mews at 17 Belgrave Mews West. (Linked with 25/06936/LBC)

    Granted Full applications Windows or glazing 153 docs

  • 17 Belgrave Square London SW1X 8PG

    26/03541/ADLBC Submitted 29 May 2026 50 yards away

    89% historically approved · decision due ~24 Jul

    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)

    Awaiting decision Conditions 3 docs

  • 17 Belgrave Square London SW1X 8PG

    26/03054/FULL Submitted 8 May 2026 50 yards away

    88% historically approved · decision due ~10 Jul

    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.

    Awaiting decision Full applications 51 docs

  • 17 Belgrave Square London SW1X 8PG

    26/03051/LBC Submitted 8 May 2026 50 yards away

    90% historically approved · decision due ~3 Jul

    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.

    Awaiting decision Heritage and listed buildings Extension 6 docs

  • 18 Belgrave Mews West London SW1X 8PX

    26/01147/LBC Submitted 24 Feb 2026 50 yards away

    90% historically approved · decision due ~3 Jun

    Repainting and stucco render repair to front façade of 18 Belgrave Square, installation of replacement EWI render system of rear elevation (18 Belgrave Mews West) and courtyard facing elevations, replacement of external venetian blinds and installation of powder coated aluminium over cills to existing concrete cills (site includes 18 Belgrave Mews)

    Awaiting decision Heritage and listed buildings 19 docs

  • Open Space Belgrave Square London SW1X 8PS

    26/00605/TPO Submitted 3 Feb 2026 50 yards away

    100% historically approved · decision due ~31 Mar

    T4477 - Laburnum anagyroides: Remove faulted stem(s) - declining, bark damaged stem with dead top, to prevent continued decline causing instability and failure onto the garden footpath. See images.

    Awaiting decision Trees 9 docs

In Westminster

  • 26/07390/LBC Awaiting decision

    40 Wigmore Street London W1U 2RX

    Installation of a non-illuminated fascia sign measuring 0.29m x 0.79m and two vinyl signs applied to inside face of the glazed shopfront each measuring 0.22m x 0.84m. (Linked with 26/06970/ADV)

    29 Oct 2026 Heritage and listed buildings
  • 26/07372/LBC Awaiting decision

    8A Randolph Road London W9 1AN

    Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07371/FULL)

    Received 28 Oct, published by the council 2 Nov 2026 Heritage and listed buildings
  • 26/07332/LBC Awaiting decision

    Royal Courts Of Justice Strand London WC2A 2LL

    Replacement of one platform lift within the grade 1 listed Royal Court?s of Justice building.

    Received 27 Oct, published by the council 30 Oct 2026 Heritage and listed buildings
  • 26/07336/LBC Awaiting decision

    Charing Cross Hotel Strand London WC2N 5HX

    Installation of replacement timber handrail and brackets to one flight of main staircase.

    Received 27 Oct, published by the council 30 Oct 2026 Heritage and listed buildings
  • 26/07316/LBC Awaiting decision

    30 Inverness Terrace London W2 3JA

    Relocation of air conditioning units throughout to the lower ground floor lightwells within aluminium enclosure; replacement of all pipes with cast iron pipes; alteration to balconies including replacement of UPVC door with original door arrangement and replacement railing; reopening of previously infilled windows; replacement marble tiles at hallway of No.32 with Victorian floor tiles; replacement of all doors facing the communal staircase with the correct period style doors; removal of red clay tile leanto roof at first floor rear and the roof made good; removal of link bridges to the rear of the second floor and the rear of the third floor; and reopening of previously infilled windows to the stairs lobby at ground, first and second floor to No.30. (Linked with 26/07315/FULL)

    Received 26 Oct, published by the council 27 Oct 2026 Heritage and listed buildings