63 Sefton Avenue London NW7 3QE
Refused on 20 April 2026
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
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves height of 2.70 metres
- Received
- 16 March 2026
- Council
- London Borough of Barnet
- Ward
- Edgware
- Agent
- JPB Architects
- ReceivedReceived16 Mar
- ValidatedValidated16 Mar
- Consult.Consultation9 Apr
- TargetTarget Date27 Apr
- DecidedDecided20 Apr
Decided in 35 days (council typically 56)
About this application
This is an outline application for a single storey rear extension at 63 Sefton Avenue London NW7 3QE. Barnet has handled 2,167 applications of this type. This one was decided in 35 days, 3 weeks quicker than Barnet's typical decision time. There have been 3 other applications at this address. In the past year there have been 94 applications across Edgware. We hold 1,046 applications in total for the NW7 postcode area.
75% of outline applications at London Borough of Barnet were approved. Across all application types, the council typically decides in about 8 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
- NW7 3QE
- Application type
- Prior Notification (Householder)
- Scale / size
- Small
Planning application dates
- Date validated
- 16 March 2026
- Consultation expiry
- 9 April 2026
- Neighbour consultation start
- 17 March 2026
- Neighbour consultation end
- 9 April 2026
- Target decision date
- 27 April 2026
Applicant and agent
- Agent
- JPB Architects
- Agent address
- Brook House 54A Cowley Mill Road Uxbridge UB8 2FX
Planning decision
- Statutory period
- 42 days
Site constraints
Designations that overlap or adjoin the site outline.
- Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)
flood storage areas, conservation 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
4 other applications at this property, newest first.
- 202619 Jun
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves…
PendingHouseholder26/2326/PNH - 20266 May
Single storey rear extension with a proposed maximum depth of 6.00 metres, maximum height of 4.00 metres and…
RefusedPrior Approval: Larger Home Extension26/1690/PNH - 202617 Feb
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.50 metres and eaves…
RefusedHouseholder26/0602/PNH - 202616 Feb
Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable…
ApprovedProposed Lawful Development Certificate26/0597/192
Source: Barnet
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
- 63 Sefton Avenue London NW7 3QE26/0597/192 · OutlineApproved0.0 mi
- 63 Sefton Avenue London NW7 3QE26/0602/PNH · OutlineRefused0.0 mi
- 31 Sefton Avenue London NW7 3QB25/3239/HSE · FullApproved0.1 mi
- 29 Sefton Avenue London NW7 3QB26/0580/192 · OutlineApproved0.1 mi
- 29 Sefton Avenue London NW7 3QB25/5133/192 · OutlineRefused0.1 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman8.0 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing8.8 mi
- Orient Construction Consultancy LimitedVerifiedLondon9.3 mi
- Artifex Renovation LtdWindow & Door Installer0.2 mi
Planning something similar?
See what the council approved and refused for single-storey rear extensions on your street. Pick your home and get the evidence before you pay for drawings.