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6, 9, Carlton House Terrace, London, SW1Y 5AG

26/07408/ADLBCApproval of details reserved by a condition (discharge)Approved
Discharge / amendments

Approved on 11 November 2026

Site boundary (council red line)

Proposal

Discharge of Condition 4 - The Royal Society - Fire door and fire resisting glazing

Submitted
30 October 2026
  1. Received30 Oct
  2. Validated
  3. Consult.
  4. Target
  5. Decided11 Nov

Decided in 12 days (council typically 49)

About this application

This is a planning application for window replacement at 6, 9, Carlton House Terrace, London, SW1Y 5AG. Westminster has handled 1,733 applications of this type. This one was decided in 12 days, 5 weeks quicker than Westminster's typical decision time. The site is in the St James's conservation area, with 8 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 276 applications across SJW_22. We hold 969 applications in total for the SW1Y postcode area.

89% of approval of details reserved by a condition (discharge) applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode
SW1Y 5AG
Application type
Approval of details reserved by a condition (discharge)

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Also checked, none recorded (21)

flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Planning history at this site

5 other applications at this property, newest first.

  1. 2026
    19 Aug

    Installation of a fire door Marble Hall in No 6 and Corridor in No 7 at Ground Floor level and fire glazing…

    ApprovedListed building consent26/05675/LBC
  2. 2024
    10 Dec

    Alteration to the existing male and female washrooms at second floor level to include a wheelchair accessible…

    PendingListed building consent24/08582/LBC
  3. 2015
    1 Dec

    Lifting 6.5x2m area of floor finishes / floor boards on the first floor (spread over three locations) to…

    ApprovedListed building consent15/11161/LBC
  4. 2002
    13 Jun

    Methodology for recording construction pursuant to condition 4 of listed building consent dated 8 February…

    ApprovedListed building consent02/04503/ADLBC
  5. 2002
    7 Jun

    Temporary display of a non-illuminated board sign, measuring 1.66 metres by 1.2 metres and attached to the…

    ApprovedListed building consent02/04341/LBC

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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