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15 Belsize Park Mews London NW3 5BL

2023/3492/PFull Planning PermissionAwaiting decision
Full
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

Erection of roof extension, new basement level, alterations to fenestration and associated works.

Received
24 August 2023
Decision due
6 December 2023
Decision level
Planning committee
Ward
Belsize
  1. Received24 Aug
  2. Validated11 Oct
  3. Consult.1 Nov
  4. Target6 Dec
  5. Decided

Have your say

Comments close on 1 November.

View on the council's siteDocuments (38)

About this application

This is a full planning application for an extension at 15 Belsize Park Mews London NW3 5BL. Camden has handled 2,296 applications of this type. It has been with the council since 24 August 2023 and is still awaiting a decision. The site is in the Belsize Park conservation area. There has been 1 other application at this address. In the past year there have been 325 applications across Belsize. We hold 2,616 applications in total for the NW3 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
NW3 5BL
Application type
Full Planning Permission
Development type
C3 Dwelling House
Scale / size
Small

Planning application dates

Date validated
11 October 2023
Consultation expiry
1 November 2023
Consultation start
11 October 2023
Consultation end
1 November 2023
Last date for comments
12 November 2023

Planning decision

Statutory period
56 days

Publicity

Site notice start
13 October 2023

Additional information

Documents
38

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Belsize
  • Article 4 direction: Basements+3 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.

Associated applications

  1. 2026
    14 Sep

    Variation of Condition 2 (Approved Plans) of planning reference 2023/3492/P

    ApprovedVariation of conditions (s73)2026/3909/P
  2. 2023
    24 Aug

    Erection of roof extension, new basement level, alterations to fenestration and associated works.

    This applicationPendingFull2023/3492/P

Source: Camden

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

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