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22B Montagu Square London W1H 2LF

25/03562/FULLFull Planning Permission ApplicationApproved
Full

Approved on 19 September 2025

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Variation of condition 1 of planning permission dated 26th June 2024 (RN:24/01176/FULL) for the Creation of a new roof terrace with railings over the existing flat roof at rear first floor level. NAMELY, to allow minor changes to approved scheme including balustrade to be fixed into the top of the coping, replacement french windows, new watering system is to be installed for the planters and lighting. Linked with 25/03499/LBC (Application under s73 of the Act)

Received
26 May 2025
Ward
Marylebone
Agent
Leigh & Glennie Ltd
  1. Received26 May
  2. Validated26 May
  3. Consult.
  4. Target21 Jul
  5. Decided19 Sep

Decided in 116 days (council typically 49)

About this application

This is a full planning application for window replacement at 22B Montagu Square London W1H 2LF. Westminster has handled 4,484 applications of this type. This one was decided in 116 days, 10 weeks longer than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 20 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 171 applications across Marylebone. We hold 896 applications in total for the W1H 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
W1H 2LF
Application type
Full Planning Permission Application
Scale / size
Small

Planning application dates

Date validated
26 May 2025
Target decision date
21 July 2025

Applicant and agent

Agent
Leigh & Glennie Ltd
Agent address
6 All Souls Road Ascot SL5 9EA

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14005636
Comments
0
Documents
4

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Portman Estate
  • Listed building: Grade II: 20-22, Montagu Square W1On this site · +2 more
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
  • 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
    26 May

    Variation of condition 1 of planning permission dated 26th June 2024 (RN:24/01176/FULL

    This applicationApprovedVariation of conditions (s73)25/03562/FULL
  2. 2025
    22 May

    Alterations to the roof terrace with the installation of balustrade to be fixed into the top of the coping…

    ApprovedListed building consentPart of25/03499/LBC

Source: Westminster

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

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