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144, Mays Lane, Underhill, EN5 2LS

25/4546/191Lawful development: Existing useApproved

Approved on 6 March 2026

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

Use as 2no. self-contained flats

Submitted
5 December 2025
  1. Received5 Dec
  2. Validated
  3. Consult.
  4. Target
  5. Decided6 Mar

Decided in 91 days (council typically 56)

About this application

This is a planning application at 144, Mays Lane, Underhill, EN5 2LS. Barnet has handled 85 applications of this type. This one was decided in 91 days, 5 weeks longer than Barnet's typical decision time. There are no previous applications recorded at this address. In the past year there have been 19 applications across UN22. We hold 3,745 applications in total for the EN5 postcode area.

79% of lawful development: existing use 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

Application details

Postcode
EN5 2LS
Application type
Lawful development: Existing use

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.

Planning history at this site

5 other applications at this property, newest first.

  1. 2020
    24 Jan

    First Floor Rear Extension. Conversion of existing garage into habitable room, insertion of window to replace…

    RefusedHouseholder20/0366/HSE
  2. 2019
    6 Nov

    First Floor Rear Extension. Conversion of existing garage into habitable room, insertion of window to replace…

    ApprovedHouseholder19/5963/HSE
  3. 2019
    24 Jul

    Roof extension, including rear dormer window and 2no. rooflights to front roofslope

    RefusedProposed Lawful Development Certificate19/4070/192
  4. 2019
    12 Jun

    Conversion of existing garage into habitable room, insertion of window to replace existing garage door. New…

    ApprovedHouseholder19/3315/HSE
  5. 2018
    16 Apr

    Installation of BT Openreach fibre optic green equipment cabinet. Ref (Barnet/PCP046/EB

    ApprovedLicence Notification18/2313/LIC

Source: Barnet

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

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