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Flat 2 19 Upper Wimpole Street London W1G 6LY

25/06204/FULLFull Planning Permission ApplicationApproved
Full

Approved on 7 November 2025

Council decision: Application PermittedDelegated (officer decision)

Site boundary (council red line)

Proposal

Installation of a new slim double-glazed timber window, painted white within the existing retained window frame fronting the internal courtyard.

Received
1 September 2025
Decision level
Delegated (officer decision)
Ward
Marylebone
Agent
Design Extension - https://www.designextension.co.uk/
  1. Received1 Sep
  2. Validated21 Sep
  3. Consult.
  4. Target16 Nov
  5. Decided7 Nov

Decided in 47 days (council typically 49)

About this application

This is a full planning application for window replacement at Flat 2 19 Upper Wimpole Street London W1G 6LY. Westminster has handled 4,484 applications of this type. This one was decided in 67 days, 3 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 14 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 171 applications across Marylebone. We hold 590 applications in total for the W1G postcode area.

86% of full 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
W1G 6LY
Application type
Full Planning Permission Application
Scale / size
Small

Planning application dates

Date validated
21 September 2025
Consultation expiry
20 October 2025
Target decision date
16 November 2025

Applicant and agent

Agent
Design Extension - https://www.designextension.co.uk/
Agent address
3 Great Woodcote Park Purley CR8 3QU

Planning decision

Statutory period
56 days

Publicity

Site notice start
29 September 2025
Site notice end
20 October 2025

Additional information

Planning Portal ID
PP-14293285
Comments
0
Documents
20

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Harley Street
  • Listed building: Grade II: 14-23, Upper Wimpole Street W1On this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
  • Flood zone 1: Low probability (rivers and sea)
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.

Associated applications

  1. 2025
    21 Sep

    Installation of a new slim double-glazed timber window, painted white within the existing retained window…

    ApprovedListed building consentRelated25/06205/LBC
  2. 2025
    1 Sep

    Installation of a new slim double-glazed timber window, painted white within the existing retained window…

    This applicationApprovedFull25/06204/FULL

Source: Westminster

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

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