21, St James's Square, London, SW1Y 4JZ

25/05146/AD7Consent to display an advertisementPermitted

Advertisement consent

Proposal

20 St James Sq - JLL

Received: 24 July 2025
Decided: 29 August 2025
Council: City of Westminster

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.

ReceivedSubmitted24 Jul
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided29 Aug

Decided in 36 days (council typically 49)

7 weeks typical decision time in Westminster81% of consent to display an advertisement applications approved

This is a planning application at 21, St James's Square, London, SW1Y 4JZ. Westminster has handled 538 applications of this type and approves 81% of them, typically deciding them in 28 days. This one was decided in 36 days, 8 days longer than Westminster's median. The site is in the St James's conservation area, with 13 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 190 applications across SJW_22. We hold 961 applications in total for the SW1Y postcode area.

Application Details

Reference

25/05146/AD7

Address

21, St James's Square, London, SW1Y 4JZ

Postcode

SW1Y 4JZ

Local Authority

Westminster

Application Type

Consent to display an advertisement

Decision Status

Permitted

Applicant & Agent

Planning Application Dates

Date Decided

29 August 2025

Date Submitted

24 July 2025

Planning Decision

Publicity

Appeal

Additional Information

Coordinates

51.506477, -0.135875

Enriching application data

2/3

Council recordsAppealsFlood risk

Source: Westminster

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

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Planning history at this site

4 other applications at this property, newest first.

Planning constraints

Designations that overlap or adjoin the site outline.

Conservation area: St James's
Listed building: Grade I: 20 and 21, St James'S Square Sw1On or next to this site
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.

© 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.

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