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1 Oldbury Place London W1U 5PA

26/04768/FULLApproved

Approved on 30 October 2026

4 conditions

Site boundary (council red line)

Proposal

Erection of mansard roof extension in connection with use as a dwelling house.

Received
16 July 2026
Public comments
0 · last counted 4 October 2026
  1. Received16 Jul
  2. Validated16 Jul
  3. Consult.
  4. Target
  5. Decided30 Oct

Decided in 106 days

About this application

This is a planning application for an extension at 1 Oldbury Place London W1U 5PA. Westminster has handled 27,108 applications of this type. This one was decided in 106 days, 8 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 7 listed buildings nearby. There has been 1 other application at this address. We hold 1,070 applications in total for the W1U postcode area.

Application details

Postcode
W1U 5PA

Planning application dates

Date validated
16 July 2026

Additional information

Documents
18

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: 5, Nottingham Street W1On or next to this site · +1 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.

Source: Westminster

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

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