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12, Lawrence Court, Mill Hill, NW7 3QP

26/0687/HSEHouseholder planning permissionRefused
Householder

Refused on 22 April 2026

3 reasons 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 with 2no. rooflights. First floor rear extension with pitched roof and incorporating a roof terrace with privacy screen. 1no. new side dormer window to existing roof extension

Submitted
25 February 2026
  1. Received25 Feb
  2. Validated
  3. Consult.
  4. Target
  5. Decided22 Apr

Decided in 56 days (council typically 56)

About this application

This is a planning application for a single storey rear extension at 12, Lawrence Court, Mill Hill, NW7 3QP. Barnet has handled 1,187 applications of this type. This one was decided in 56 days. There has been 1 other application 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.See what's approved near your address

Why it was refused

  1. The proposed first floor rear roof terrace, by reason of its excessive depth, both individually and cumulatively when considered alongside the proposed first floor rear extension and associated privacy screen, would constitute an unsympathetic and incongruous form of development. The proposal would be out of keeping with the established character and appearance of the host dwelling and the surrounding area. Furthermore, the roof terrace would result in an unacceptable level of overlooking of the neighbouring garden, to the detriment of the residential amenities of the occupants of No. 11 Lawrence Court. The development is therefore contrary to Policies CDH01 and CDH05 of the Barnet Local Plan (March 2025) and Policy D3 of the London Plan (2021).
  2. The proposed single storey rear extension, by reason of its excessive depth, size and scale would result in an overly dominant and disproportionate addition to the host dwelling. The development would fail to respect the scale, form and established pattern of development, resulting in harm to the character and appearance of the dwelling and the surrounding area. The proposal is therefore contrary to Policy CDH01 and CDH05 of the Barnet Local Plan (March 2025) and Policy D3 of the London Plan (2021).
  3. No information has been submitted in respect of the impact of the proposed works and development on the trees of special amenity value protected by Tree Preservation Order to enable the Local Planning Authority to properly assess its impact. In the absence of detailed information including a tree survey report, method statement and tree protection plan it is considered that the proposed development could result in the loss or harm to trees of special amenity value to both the subject site and the wider area. The development would be contrary to Policy G7 of the London Plan (2021), and Policies CDH01 of the Barnet Local Plan (2025).

From the council's decision notice.

Application details

Postcode
NW7 3QP
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
  • Tree Preservation Order: TPO/CA/40Part of the site · +1 more
  • 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.

Source: Barnet

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

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