39 Windsor Road London N3 3SN
Approved on 3 November 2025
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 new raised patio area following removal of the existing patio area and outrigger building
- Received
- 5 September 2025
- Council
- London Borough of Barnet
- Ward
- Finchley Church End
- Agent
- KAS Architects
- ReceivedReceived5 Sep
- ValidatedValidated8 Sep
- Consult.Consultation7 Oct
- TargetTarget Date3 Nov
- DecidedDecided3 Nov
Decided in 56 days (council typically 56)
About this application
This is a full planning application for a single storey rear extension at 39 Windsor Road London N3 3SN. Barnet has handled 4,516 applications of this type. This one was decided in 59 days, 3 days longer than Barnet's typical decision time. There have been 2 other applications at this address. In the past year there have been 144 applications across Finchley Church End. We hold 1,017 applications in total for the N3 postcode area.
77% of full 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
- N3 3SN
- Application type
- Householder Application
- Scale / size
- Small
Planning application dates
- Date validated
- 8 September 2025
- Consultation expiry
- 7 October 2025
- Neighbour consultation start
- 9 September 2025
- Neighbour consultation end
- 7 October 2025
- Target decision date
- 3 November 2025
Applicant and agent
- Agent
- KAS Architects
- Architect profile
- KAS ARCHITECTS LIMITED
- Agent address
- 8 Kidderpore Avenue London NW3 7SU
Planning decision
- Statutory period
- 56 days
Site constraints
Designations that overlap or adjoin the site outline.
- Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
- Tree Preservation Order: Ref TRE/FI/23Next to the site
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)
flood storage areas, conservation 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.
- 20261 Jul
Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight…
ApprovedProposed Lawful Development Certificate26/2481/192 - 202618 May
Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight…
RefusedProposed Lawful Development Certificate26/1863/192
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
- 39 Windsor Road London N3 3SN26/1863/192 · OutlineRefused0.0 mi
- 37 Windsor Road Finchley London N3 3SN15/02999/HSE · FullApproved0.0 mi
- 37 Windsor Road London N3 3SN15/00566/HSE · FullApproved0.0 mi
- Deansbrook (adjacent To Garages At The Rear) Windsor Road London N3 3SRTPP/0047/20 · TreesApproved0.0 mi
- 35 Windsor Road London N3 3SN15/06273/FUL · FullApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman5.8 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing6.7 mi
- Orient Construction Consultancy LimitedVerifiedLondon6.8 mi
- Kabilo LimitedVerifiedLondonExtensionsLoft Conversions8.9 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.