64 St James's Street London SW1A 1NF

26/06009/NMAPermitted

Proposal

Amendments to planning permission dated 02 September 2021 (RN: 21/02158/FULL) for the: Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works. NAMELY, increase the footprint of the rooftop plant enclosure and increase the height of the roof-level railing, necessitated by a revised roof level.

Received: 3 September 2026
Council: City of Westminster

Site boundary (council red line)

ReceivedSubmitted3 Sep
ValidatedValidated3 Sep
Consult.Consultation
TargetTarget Date
DecidedDecided

This is a planning application for demolition at 64 St James's Street London SW1A 1NF. Westminster has handled 26,489 applications of this type and approves 88% of them, typically deciding them in 54 days. It was submitted on 3 September 2026 and is still awaiting a decision. The site is in the St James's conservation area, with 20 listed buildings nearby. There has been 1 other application at this address. We hold 1,240 applications in total for the SW1A postcode area.

Application Details

Reference

26/06009/NMA

Address

64 St James's Street London SW1A 1NF

Postcode

SW1A 1NF

Local Authority

Westminster

Decision Status

Permitted

Current Status

Pending

Applicant & Agent

Planning Application Dates

Date Received

3 September 2026

Date Validated

3 September 2026

Date Submitted

3 September 2026

Planning Decision

Publicity

Appeal

Additional Information

Documents

Coordinates

51.506150, -0.139322

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

3 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 II: 2 and 3, St James's PlaceOn or next to this site · +1 more
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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