11 Windermere Avenue London N3 3QX
Approved on 7 February 2025
Council decision: Approve subject to conditionsDelegated (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
Single storey side/rear extension. Changes to fenestration on the rear elevation with new juliette balconies on the first floor. Addition of solar panel to second floor roof. HVAC unit at ground floor rear.
- Received
- 13 December 2024
- Decision level
- Delegated (officer decision)
- Council
- London Borough of Barnet
- Ward
- Finchley Church End
- ReceivedReceived13 Dec
- ValidatedValidated16 Dec
- Consult.Consultation15 Jan
- TargetTarget Date10 Feb
- DecidedDecided7 Feb
Decided in 53 days (council typically 56)
About this application
This is a full planning application for a rear extension at 11 Windermere Avenue London N3 3QX. Barnet has handled 4,516 applications of this type. This one was decided in 56 days. 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.See what's approved near your address
Application details
- Postcode
- N3 3QX
- Application type
- Householder Application
- Scale / size
- Small
Planning application dates
- Date validated
- 16 December 2024
- Consultation expiry
- 15 January 2025
- Neighbour consultation start
- 18 December 2024
- Neighbour consultation end
- 15 January 2025
- Target decision date
- 10 February 2025
Applicant and agent
- Agent
- LZArch
- Agent address
- 64 Fortis Green London N2 9EN
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
- 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
2 other applications at this property, newest first.
- 20266 Mar
Erection of a timber refuse store and bike shed to the front garden. Installation of an electrical vehicular…
ApprovedHouseholder26/0857/HSE - 20247 Aug
Roof extension involving hip to gable, rear dormer windows with juliette balcony, 1no.rooflight and new gable…
ApprovedProposed Lawful Development Certificate24/3075/192
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
- 11 Windermere Avenue London N3 3QX24/3075/192 · OutlineApproved0.0 mi
- 11 Windermere Avenue London N3 3QX26/0857/HSE · FullApproved0.0 mi
- S/o 1 Windermere Avenue London N3 3QX24/4696/LICApproved0.0 mi
- 38 East End Road London N3 3QU25/5070/HSE · FullApproved0.0 mi
- O/s 5 Holmwood Gardens London N3 3NS24/4698/LICApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman5.4 mi
- Orient Construction Consultancy LimitedVerifiedLondon6.1 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing6.4 mi
- Kabilo LimitedVerifiedLondonExtensionsLoft Conversions8.2 mi
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