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6, Oakhampton Road, Mill Hill, NW7 1NH

26/0260/HSEHouseholder planning permissionRefused
Householder

Refused on 24 March 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

Part single, part two storey front, side and rear extensions with pergola. Roof extension involving rear dormer window and 2no. double front facing rooflights

Submitted
23 January 2026
  1. Received23 Jan
  2. Validated
  3. Consult.
  4. Target
  5. Decided24 Mar

Decided in 60 days (council typically 56)

About this application

This is a planning application for a dormer extension at 6, Oakhampton Road, Mill Hill, NW7 1NH. Barnet has handled 1,187 applications of this type. This one was decided in 60 days, 4 days longer than Barnet's typical decision time. There are no previous applications recorded at this address. In the past year there have been 139 applications across MH22. We hold 1,046 applications in total for the NW7 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.Planning something similar? See what gets approved on your street

Why it was refused

  1. The proposed ground floor front extension, first-floor side and rear extensions and roof extensions, both individually and cumulatively, by reason of their size, siting, massing, design and prominent corner location, would appear as disproportionate, unsympathetic and visually dominant additions that fail to appear subordinate to the host dwelling. The development would detract from the character and appearance of the property and streetscene, contrary to Policies CDH01 and CDH05 of the Barnet Local Plan (2025), Policy D3 of the London Plan (2021), and the Residential Design Guidance SPD (2016).

From the council's decision notice.

Application details

Postcode
NW7 1NH
Application type
Householder planning permission

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)Part of the site
  • Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
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.

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