Alliance House 29-30 High Holborn London WC1V 6AZ
Approved on 14 November 2025
Council decision: Granted Subject to a Section 106 Legal AgreementDelegated (officer decision)
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
Erection of 5 storey rear extension at 2nd, 3rd, 4th, 5th and 6th floor levels to create 5 self-contained flats (4x studio flats and 1x 2-bed flat); 5x air source heat pumps on roof
- Received
- 7 July 2023
- Decision level
- Delegated (officer decision)
- Council
- London Borough of Camden
- Ward
- Holborn and Covent Garden
- ReceivedReceived7 Jul
- ValidatedValidated25 Jul
- Consult.Consultation15 Aug
- TargetTarget Date21 Aug
- DecidedDecided14 Nov
Decided in 843 days (council typically 49)
About this application
This is a full planning application for a rear extension at Alliance House 29-30 High Holborn London WC1V 6AZ. Camden has handled 2,296 applications of this type. The site is in the Bloomsbury conservation area, with 9 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 335 applications across Holborn and Covent Garden. We hold 270 applications in total for the WC1V postcode area.
90% of full applications at London Borough of Camden 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
- WC1V 6AZ
- Application type
- Full Planning Permission
- Development type
- C3 Dwelling House, Commercial, business & service uses
- Scale / size
- Small
Planning application dates
- Date validated
- 25 July 2023
- Consultation expiry
- 15 August 2023
- Consultation start
- 25 July 2023
- Consultation end
- 15 August 2023
- Last date for comments
- 21 August 2023
- Target decision date
- 21 August 2023
Planning decision
- Statutory period
- 27 days
Publicity
- Site notice start
- 28 July 2023
Additional information
- Documents
- 46
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Bloomsbury
- Article 4 direction: Basements+1 more
- Flood zone 1: Low probability (rivers and sea)
Possibly incomplete for this council: tree preservation orders.
Also checked, none recorded (21)
flood storage areas, listed buildings, 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
2 other applications at this property, newest first.
- 20192 May
2 Tables and 4 Chairs Monday to Thursday: 08:00 to 23:00 Friday to Saturday: 08:00 to 23:30, Sunday: 08:00 to…
ApprovedTables and Chairs2019/2632/TC - 201327 Apr
Change of use of basement and ground floor from bank (Class A2) to restaurant (Class A3) with alterations to…
ApprovedFull Planning Permission2013/2477/P
Source: Camden
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 29-30 High Holborn London WC1V 6AZ2013/2477/P · FullApproved0.0 mi
- Leon Alliance House 29-30 High Holborn London WC1V 6AZ2019/2632/TCApproved0.0 mi
- Leon High Holborn Alliance House, 29 30 High Holborn, London, WC1V 6AZ2024/2006/PVLAwaiting decision0.0 mi
- o/s 24 High Holborn London WC1V 6BN2017/0643/A · AdvertisingWithdrawn0.0 mi
- o/s 24 High Holborn London WC1V 6BN2017/0450/P · FullWithdrawn0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.2 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing1.4 mi
- Orient Construction Consultancy LimitedVerifiedLondon2.6 mi
- Building Services LondonVerifiedLondonExtensionsLoft Conversions4.2 mi
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