Skip to content

Admiralty Arch The Mall London SW1A 2DY

17/08515/CLEUDCertificate of Lawfulness (existing)Approved
Lawful development certificate

Approved on 17 November 2017

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

External fenestration works to the top floor south wing. (Confirmation that the development authorised by planning permission 14/05315/FULL dated 29 August 2014 was begun before expiry of that permission).

Received
22 September 2017
Decision level
Delegated (officer decision)
Ward
St James's
Agent
Blair Associates Architecture Ltd
  1. Received22 Sep
  2. Validated22 Sep
  3. Consult.
  4. Target17 Nov
  5. Decided17 Nov

Decided in 56 days (council typically 49)

About this application

This is an application to amend a permission at Admiralty Arch The Mall London SW1A 2DY. Westminster has handled 604 applications of this type. This one was decided in 56 days, 7 days longer than Westminster's typical decision time. The site is in the Trafalgar Square conservation area, with 9 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 478 applications across St James's. We hold 1,263 applications in total for the SW1A postcode area.

88% of amendment 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
SW1A 2DY
Application type
Certificate of Lawfulness (existing)
Scale / size
Small

Planning application dates

Date validated
22 September 2017
Target decision date
17 November 2017

Applicant and agent

Agent
Blair Associates Architecture Ltd
Architect profile
BLAIR ASSOCIATES ARCHITECTURE LTD
Agent address
88 Golden Lane London EC1Y 0UA

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-06328255
Comments
0
Documents
9

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Also checked, none recorded (19)

flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, 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 and heritage coasts.

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.

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near SW1A

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

What's been approved on your street?

See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.

Get The Signal Report