4 Connaught Mews London NW3 2NW
Proposal
Details pursuant to condition 7 (land contamination) of planning permission 2025/4212/P dated 10/02/2026 for ‘Erection of single storey side extension, outbuilding and associated landscape. Replacement of side window with doors and installation of rooflights.
- Received
- 16 June 2026
- Decided
- 26 August 2026 · Granted
- Council
- London Borough of Camden
- Ward
- Hampstead Town
- ReceivedSubmitted16 Jun
- ValidatedValidated16 Jun
- Consult.Consultation
- TargetTarget Date7 Jul
- DecidedDecided26 Aug
Decided in 71 days (council typically 49)
This is a planning application for a single storey side extension at 4 Connaught Mews London NW3 2NW. Camden has handled 280 applications of this type and approves nearly all of them, typically deciding them in 35 days. This one was decided in 71 days, 5 weeks longer than Camden's median. The site is in the Hampstead conservation area, with 8 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 397 applications across Hampstead Town. We hold 2,488 applications in total for the NW3 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Camden
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 20268 Sep
Removal of condition 8 (obscure glazing) to planning permission 2025/4212/P
PendingVariation of conditions (s73)2026/3792/P - 202623 Jun
Details to discharge condition 4 (hard and soft landscaping) of planning permission 2025/4212/P
ApprovedDischarge of conditions2026/2557/P - 202616 Jun
Details pursuant to condition 7 (land contamination) of planning permission 2025/4212/P
This applicationApprovedDischarge of conditions2026/2497/P - 202523 Sep
Erection of single storey side extension, outbuilding and associated landscape. Replacement of side window…
ApprovedHouseholderPart of2025/4212/P
Planning history at this site
1 other application at this property, newest first.
Planning constraints
Designations at the address point. Ones next to the site may also apply.
- Conservation area: Hampstead
- 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 2026-10-09. 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.
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