Skip to content

456 Long Lane London N2 8JL

26/2154/HSERefused

Refused on 12 August 2026

1 reason for refusal

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

Single storey rear extension

Submitted
10 June 2026
  1. Received10 Jun
  2. Validated
  3. Consult.
  4. Target
  5. Decided12 Aug

Decided in 63 days

About this application

This is a planning application for a single storey rear extension at 456 Long Lane London N2 8JL. Barnet has handled 16,914 applications of this type. This one was decided in 63 days, 7 days longer than Barnet's typical decision time. There has been 1 other application at this address. We hold 919 applications in total for the N2 postcode area.

Why it was refused

  1. The proposed single storey rear/side infill extension, by reason of its size, siting, design, close proximity to neighbouring boundary, excessive depth and height would appear overbearing, resulting in a loss of outlook and an increased sense of enclosure towards 454 Long Lane. The proposed development would therefore be detrimental to the amenities of the occupiers of the neighbouring property, contrary to Policy D3 of the London Plan (2021), Policies CDH01 and CDH05 of the Adopted Barnet Local Plan (2025) and the Sustainable Design and Development Guidance Supplementary Planning Document (2026).

From the council's decision notice.

Application details

Postcode
N2 8JL

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.

© 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.

Source: Barnet

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

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near N2

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

What's been approved on your street?

See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.

Get The Signal Report