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100 Parliament Street London SW1A 2BQ

26/03368/LBCListed Building Consent ApplicationApproved
Listed building consent

Approved on 8 July 2026

Site boundary (council red line)

Proposal

Iinternal alterations. (CONFIDENTIAL)

Received
21 May 2026
Ward
St James's
Agent
Feilden+Mawson Group Ltd
  1. Received21 May
  2. Validated21 May
  3. Consult.
  4. Target16 Jul
  5. Decided8 Jul

Decided in 48 days (council typically 49)

About this application

This is a heritage application at 100 Parliament Street London SW1A 2BQ. Westminster has handled 2,677 applications of this type. This one was decided in 48 days. 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.

93% of heritage 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.Planning something similar? See what gets approved on your street

Application details

Postcode
SW1A 2BQ
Application type
Listed Building Consent Application
Scale / size
Small

Planning application dates

Date validated
21 May 2026
Target decision date
16 July 2026

Applicant and agent

Agent
Feilden+Mawson Group Ltd
Agent address
21-27 Lambs Conduit Street London WC1N 3NL United Kingdom

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14954159
Comments
0
Documents
2

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: Whitehall
  • Listed building: Cabinet War Rooms Horse Guards Road London SW1A 2AQOn this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
Also checked, none recorded (22)

flood storage areas, listed buildings, 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.

© 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
    14 Apr

    Internal Alterations.

    ApprovedCert of Law - Prposed works to LB26/02479/CLLB
  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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