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78 Chester Square London SW1W 9DU

24/00172/FULLFull Planning Permission ApplicationApproved
Full

Approved on 17 May 2024

Council decision: Application PermittedDelegated (officer decision)

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

Replacement of the existing lower ground floor rear extension with a new extension at rear lower ground and ground floor level. Lowering of the floor within the rear lower ground wing. Alterations at roof level to accommodate new mechanical plant and solar panels. Alterations to windows and doors.

Received
11 January 2024
Decision level
Delegated (officer decision)
Public comments
1
Ward
Knightsbridge & Belgravia
Agent
ADL Planning Pty Ltd
  1. Received11 Jan
  2. Validated11 Jan
  3. Consult.
  4. Target7 Mar
  5. Decided17 May

Decided in 127 days (council typically 49)

About this application

This is a full planning application for a rear extension at 78 Chester Square London SW1W 9DU. Westminster has handled 4,484 applications of this type. This one was decided in 127 days, 11 weeks longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 11 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 380 applications across Knightsbridge & 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 9DU
Application type
Full Planning Permission Application
Scale / size
Small

Planning application dates

Date validated
11 January 2024
Consultation expiry
14 February 2024
Target decision date
7 March 2024

Applicant and agent

Agent
ADL Planning Pty Ltd
Agent address
1 The Arbory Plumpton Lane Great Plumpton PR4 3NH

Planning decision

Statutory period
56 days

Publicity

Last advertised
24 January 2024
Advertisement expiry
14 February 2024

Additional information

Planning Portal ID
PP-12657759
Documents
49

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

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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