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121, Marsh Lane, Mill Hill, NW7 4LG

25/1759/HSEHouseholder planning permissionApproved
Householder

Approved on 20 June 2025

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 to upper ground floor linking to existing house. New Garage doors.

Submitted
25 April 2025
  1. Received25 Apr
  2. Validated
  3. Consult.
  4. Target
  5. Decided20 Jun

Decided in 56 days (council typically 56)

About this application

This is a planning application for a single storey rear extension at 121, Marsh Lane, Mill Hill, NW7 4LG. Barnet has handled 1,187 applications of this type. This one was decided in 56 days. There have been 4 other applications at this address. In the past year there have been 54 applications across EY22. We hold 1,045 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

Application details

Postcode
NW7 4LG
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: Ref TRE/HE/42.1Part of the site · +2 more
  • Green belt: Barnet
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

flood storage areas, conservation areas, listed buildings, 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.

Associated applications

  1. 2025
    25 Apr

    Single storey rear extension to upper ground floor linking to existing house. New Garage doors.

    This applicationApprovedHouseholder25/1759/HSE
  2. 2025
    22 Apr

    Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.87 metres and eaves…

    RefusedPrior Approval: Larger Home ExtensionFiled alongside25/1699/PNH

Planning history at this site

7 other applications at this property, newest first.

  1. 2026
    20 Jul

    Refurbishment of existing property including additional storey with butterfly roof and timber cladding…

    RefusedHouseholder26/2695/HSE
  2. 2025
    26 Jun

    Additional storey at first floor level

    ApprovedHouseholder25/2646/PNU
  3. 2025
    25 Apr

    Single storey rear extension with a depth of 8.00 metres, maximum height of 3.87 metres and eaves height of…

    PendingHouseholder25/1747/PNH
  4. 2025
    1 Apr

    Erection of a single storey pool house following demolition of the existing pool and green house

    ApprovedLawful development: Proposed use25/1451/192
  5. 2025
    26 Mar

    2no. single storey side/rear extensions with a depth of 8m, maximum height of 2.99m and eaves height of…

    RefusedHouseholder25/1291/PNH
  6. 2025
    26 Mar

    Additional storey at first floor level

    RefusedPrior Notification (Upward Ex house)25/1292/PNU

Source: Barnet

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

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