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9 Eaton Square London SW1W 9DB

17/05421/FULLApplication for full Planning PermissionApproved
Full

Approved on 18 August 2017

Council decision: Application PermittedDelegated (officer decision)

Approximate location: the centre of the postcode, not the exact property.

Proposal

Amalgamation of flats K & L at fourth floor level to form a single family dwelling. External alterations including the replacement of dormer windows, replacement of railings at fourth floor level, alterations to rear fenestration, repositioning of roof access and new rooflights.

Received
19 June 2017
Decision level
Delegated (officer decision)
Ward
Knightsbridge And Belgravia
Agent
Trevor Lahiff Architects
  1. Received19 Jun
  2. Validated23 Jun
  3. Consult.
  4. Target18 Aug
  5. Decided18 Aug

Decided in 56 days (council typically 49)

About this application

This is a full planning application for a dormer extension at 9 Eaton Square London SW1W 9DB. Westminster has handled 4,484 applications of this type. This one was decided in 60 days, 11 days longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 9 listed buildings nearby. There have been 2 other applications at this address. In the past year there have been 3 applications across Knightsbridge And Belgravia. We hold 1,478 applications in total for the SW1W 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.Planning something similar? See what gets approved on your street

Application details

Postcode
SW1W 9DB
Application type
Application for full Planning Permission
Scale / size
Small

Planning application dates

Date validated
23 June 2017
Consultation expiry
28 July 2017
Target decision date
18 August 2017

Applicant and agent

Agent
Trevor Lahiff Architects
Agent address
Geneva House 99 Knatchbull Road London SE5 9QU

Planning decision

Statutory period
56 days

Publicity

Last advertised
7 July 2017
Advertisement expiry
28 July 2017

Additional information

Planning Portal ID
PP-06156990
Comments
0
Documents
31

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • Conservation area: Belgravia
  • Listed building: Flat B 18-19 Eaton Square London SW1W 9DDOn or next to this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

flood storage areas, listed buildings, 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. 2017
    19 Jun

    Amalgamation of flats K & L at fourth floor level to form a single family dwelling. External alterations…

    This applicationApprovedFull17/05421/FULL
  2. 2017
    19 Jun

    External alterations including the replacement of dormer windows, replacement of railings at fourth floor…

    ApprovedListed building consentFiled alongside17/05422/LBC

Source: Westminster

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

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