Windmill Lane, EN5 3HX

26/2108/HSEHouseholder planning permissionRefused

Householder

Refused on 20 October 2026

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

Additional partial storey at first floor level (Amended Proposal)

Submitted: 11 June 2026
Council: London Borough of Barnet

ReceivedSubmitted11 Jun
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided20 Oct

Decided in 131 days (council typically 56)

About this application

This is a planning application at Windmill Lane, EN5 3HX. Barnet has handled 1,187 applications of this type. This one was decided in 131 days, 11 weeks longer than Barnet's typical decision time. There have been 6 other applications at this address. In the past year there have been 52 applications across HB22. We hold 3,740 applications in total for the EN5 postcode area.

82% of householder planning permission 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

Why it was refused

The proposed additional storey at first floor level, by reason of its inadequate separation distances and relationship with neighbouring residential properties would introduce direct and unrestricted overlooking of neighbouring private amenity space. In particular, the proposed rear facing first floor window would afford clear views into the rear garden of Honeysuckle, and increased opportunities for overlooking towards Stanhope from an elevated position, resulting in an unacceptable loss of privacy detrimental to the residential amenities of the occupiers of neighbouring properties contrary to Policies CDH01 and CDH05 of the Barnet Local Plan (2025), Policy D3 of the London Plan (2021), and the Council's Sustainable Design and Development Guidance SPD (Adopted 2026).

From the council's decision notice.

Application details

Postcode: EN5 3HX
Application type: Householder planning permission

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

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.

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

6 other applications at this property, newest first.

Source: Barnet

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

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