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Nan Clarks Lane, Mill Hill, NW7 4HH

26/4040/HSEHouseholderAwaiting decision
Site boundary (council red line)

Proposal

Single storey rear extensions and single storey front/side infill extension; installation of a new stone entrance portico with associated access railings; partial hip to gable extension to the lower-level roof form; alterations to dormer windows, including replacement of 4 no. rear dormers with 2 no. dormers and the addition of 2 no. dormer windows to each side elevation; removal of a rear chimney; replacement windows and doors; and associated fenestration alterations, including 2 no. additional window openings to the western side elevation; installation of rooflights and replacement/enlargement of an existing rooflight

Submitted
9 November 2026
  1. Received9 Nov
  2. Validated
  3. Consult.
  4. Target
  5. Decided

About this application

This is a planning application for a dormer extension at Nan Clarks Lane, Mill Hill, NW7 4HH. Barnet has handled 90 applications of this type. It has been with the council since 9 November 2026 and is still awaiting a decision. The site is in the Mill Hill conservation area. There have been 5 other applications at this address. In the past year there have been 53 applications across EY22. We hold 1,044 applications in total for the NW7 postcode area.

91% of householder 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
NW7 4HH
Application type
Householder

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Mill Hill
  • Listed building: Grade II: Chalybeate Well Situated in the Grounds of the BarnOn or next to this site
  • Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
  • Tree Preservation Order: Ref TRE/HE/3Part of the site · +3 more
  • Green belt: Barnet
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (19)

flood storage areas, 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

5 other applications at this property, newest first.

  1. 2026
    6 May

    Submission of details of conditions 4 (Demolition and Construction Management and Logistics Plan), 5…

    ApprovedDischarge of conditions26/1700/CON
  2. 2025
    2 Dec

    Submission of details of condition 7 (Arboricultural Supervision Report) pursuant to planning permission…

    ApprovedDischarge of conditions25/4802/CON
  3. 2025
    11 Nov

    Demolition of 3no. existing farm buildings and replacement with 2no. new buildings to function as storage…

    ApprovedFull planning permission25/4485/FUL
  4. 2025
    5 May

    Group of Oak, Beech, Lime,Hornbeam, Horse Chestnut, Holly (applicants ref. G1) - Cut back specific over…

    ApprovedApplicationTPP/0245/25
  5. 2025
    20 Jan

    Replacement of existing roof tiles to main house and outbuilding

    ApprovedHouseholder25/0192/HSE

Source: Barnet

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

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