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84 Margaret Street London W1W 8TD

26/04650/LBCApproved

Approved on 10 September 2026

Site boundary (council red line)

Proposal

Replacement of three existing UPVC windows with new double glazed timber sash windows.

Received
10 July 2026
  1. Received10 Jul
  2. Validated17 Jul
  3. Consult.
  4. Target
  5. Decided10 Sep

Decided in 55 days

About this application

This is a planning application for window replacement at 84 Margaret Street London W1W 8TD. Westminster has handled 27,108 applications of this type. This one was decided in 55 days, 6 days longer than Westminster's typical decision time. The site is in the East Marylebone conservation area, with 8 listed buildings nearby. There have been 2 other applications at this address. We hold 251 applications in total for the W1W postcode area.

Application details

Postcode
W1W 8TD

Planning application dates

Date validated
17 July 2026

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Also checked, none recorded (20)

flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, 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.

Associated applications

  1. 2026
    17 Jul

    Variation of Condition 1 of planning permission dated 8 August 2023 (23/01673/FULL

    ApprovedVariation of conditions (s73)Filed alongside26/03417/FULL
  2. 2026
    17 Jul

    Replacement of three existing UPVC windows with new double glazed timber sash windows.

    This applicationApprovedListed building consent26/04650/LBC

Source: Westminster

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

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