3 Blenheim Road London NW8 0LU
Proposal
Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations; Internal alterations, including changes to planform and replacement of fireplace at lower-ground floor level.
- Received
- 17 August 2026
- Public comments
- 0 · last counted 3 October 2026
- Council
- City of Westminster
- ReceivedSubmitted17 Aug
- ValidatedValidated17 Aug
- Consult.Consultation
- TargetTarget Date
- DecidedDecided
This is a planning application for an extension at 3 Blenheim Road London NW8 0LU. Westminster has handled 26,489 applications of this type and approves 88% of them, typically deciding them in 54 days. It was submitted on 17 August 2026 and is still awaiting a decision. The site is in the St John's Wood conservation area, with 20 listed buildings nearby. There have been 3 other applications at this address. We hold 2,702 applications in total for the NW8 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
- 202624 Aug
Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL
ApprovedNon-material amendmentFiled alongside26/05798/NMA - 202617 Aug
Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of…
This applicationPendingListed building consent26/05589/LBC
Planning history at this site
3 other applications at this property, newest first.
- 202626 Aug
Details of Trees pursuant to Condition 10 of planning permission 18 January 2024 (RN:22/04886/FULL
PendingApplication26/05863/ADFULL - 202612 May
Details of the ways in which you will protect the trees which you are keeping, as shown on drawing Barrell…
RefusedDischarge of conditions26/03113/ADFULL - 202612 May
Details of all flood resilient and resistant measures shall be submitted; pursuant to condition 5 of planning…
ApprovedApplication26/03112/ADFULL
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: St John's Wood
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Tree Preservation Order: Ref STM9Protected tree on or next to this site · +5 more
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (20)
flood storage areas, 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.
Before the decision
You may need a heritage statement. Heritage & archaeology consultants near this site
A listed building is on or next to this site.
- 0.5 miLondonRTPI
- 1.5 miLONDONRTPI
- 1.5 miLondonRTPI
Nearest first, within 25 miles of the site. Every firm is listed free.
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