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100 Parliament Street London SW1A 2BQ

26/02479/CLLBCert of Law - Prposed works to LBApproved

Approved on 5 May 2026

Site boundary (council red line)

Proposal

Internal Alterations.

Received
14 April 2026
Ward
St James's
Agent
Feilden+Mawson LLP
  1. Received14 Apr
  2. Validated14 Apr
  3. Consult.
  4. Target26 May
  5. Decided5 May

Decided in 21 days

About this application

This is a planning application at 100 Parliament Street London SW1A 2BQ. Westminster has handled 27,108 applications of this type. This one was decided in 21 days, 4 weeks quicker than Westminster's typical decision time. The site is in the Whitehall conservation area, with 20 listed buildings nearby. There have been 12 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.

Application details

Postcode
SW1A 2BQ
Application type
Cert of Law - Prposed works to LB
Scale / size
Small

Planning application dates

Date validated
14 April 2026
Target decision date
26 May 2026

Applicant and agent

Agent
Feilden+Mawson LLP
Agent address
21-27 Lambs Conduit Street London WC1N 3NL

Planning decision

Statutory period
42 days

Additional information

Comments
0
Documents
4

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.

Planning history at this site

15 other applications at this property, newest first.

  1. 2026
    9 Nov

    Internal alterations.

    PendingListed building consent26/07605/LBC
  2. 2026
    5 Oct

    Internal alterations.

    PendingListed building consent26/06794/LBC
  3. 2026
    27 Aug

    Internal alterations.

    ApprovedListed building consent26/05896/LBC
  4. 2026
    2 Jun

    Internal alterations to EP2.

    ApprovedListed building consent26/03616/LBC
  5. 2026
    21 May

    Iinternal alterations. (CONFIDENTIAL)

    ApprovedListed building consent26/03368/LBC
  6. 2026
    29 Jan

    Internal alterations

    ApprovedListed building consent26/00537/LBC

Source: Westminster

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

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