63 Blandford Street, City Of Westminster, London, W1U 7HR
Proposal
Erection of mono-pitched and sheer roof extension to rear with two sash windows and a single timber door to the rear, raise chimney height by 330mm, installation of six over six pane slimline double glazed timber sash windows and installation of new roof top photovoltaic panels and associated internal alterations. (Linked to 25/04452/LBC)
- Received
- 5 August 2025
- Decided
- 3 November 2025
- Council
- City of Westminster
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.
- ReceivedSubmitted5 Aug
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided3 Nov
Decided in 90 days (council typically 49)
This is a planning application for an extension at 63 Blandford Street City Of Westminster London W1U 7HR. Westminster has handled 167 applications of this type and approves 87% of them, typically deciding them in 56 days. This one was decided in 90 days, 5 weeks longer than Westminster's median. The site is in the Portman Estate conservation area, with 14 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 146 applications across MBW_22. We hold 1,036 applications in total for the W1U postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 20255 Aug
Erection of mono-pitched and sheer roof extension to rear with two sash windows and a single timber door to…
This applicationApprovedListed building consent25/04451/FULL - 20255 Aug
Erection of mono-pitched and sheer roof extension to rear with two sash windows and a single timber door to…
ApprovedListed building consentPart of25/04452/LBC
Planning history at this site
5 other applications at this property, newest first.
- 20268 Sep
Variation of 25/04450/LBC
PendingListed building consent26/06137/LBC - 20268 Sep
Variation of Condition 1 of planning permission dated 3rd November 2025 (25/04449/FULL
PendingVariation of conditions (s73)26/04651/FULL - 202628 Jul
Details of written photographic specification of the materials; exterior of the new extension; new windows…
ApprovedDischarge of conditions26/05078/ADFULL - 20255 Aug
Erection of mansard roof extension with three new front dormers, one dormer window (replace existing) and one…
ApprovedListed building consent25/04450/LBC - 20255 Aug
Erection of mansard roof extension with three new front dormers, two rear dormers (one dormer window and one…
ApprovedListed building consent25/04449/FULL
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Portman Estate
- 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 2026-10-09. 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.
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