Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

26/02778/FULLFull Planning Permission ApplicationApproved

Full

Approved on 9 July 2026

Site boundary (council red line)

Proposal

Installation of automatic opening vents to window openings at levels 00, 01, 02 and 03 on east and west elevations.

Received: 27 April 2026
Council: City of Westminster
Ward: St James's
Agent: Smith Jenkins Ltd

ReceivedReceived27 Apr
ValidatedValidated27 Apr
Consult.Consultation
TargetTarget Date22 Jun
DecidedDecided9 Jul

Decided in 73 days (council typically 49)

About this application

This is a full planning application for window replacement at Sanctuary Buildings 20 Great Smith Street London SW1P 3BT. Westminster has handled 4,484 applications of this type. This one was decided in 73 days, 3 weeks longer than Westminster's typical decision time. The site is in the Westminster Abbey and Parliament Square conservation area, with 9 listed buildings nearby. There have been 9 other applications at this address. In the past year there have been 478 applications across St James's. We hold 1,247 applications in total for the SW1P 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.See what's approved near your address

Application details

Postcode: SW1P 3BT
Application type: Full Planning Permission Application
Scale / size: Small

Planning application dates

Date validated: 27 April 2026
Target decision date: 22 June 2026

Applicant and agent

Agent: Smith Jenkins Ltd
Agent address: Studio 11.2.1 The Leather Market 11-13 Weston Street London SE1 3ER

Planning decision

Statutory period: 56 days

Additional information

Planning Portal ID: PP-14882881
Comments: 0
Documents: 40

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Flood zone 3: High probability (rivers and sea)
Conservation area: Westminster Abbey And Parliament Square
Listed building: Grade II: Orchard HouseOn this site · +3 more
Article 4 direction: Article 4 Basement Development Permitted Rights Removed

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.

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.

Planning history at this site

11 other applications at this property, newest first.

Source: Westminster

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

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