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66 Hadley Highstone Barnet EN5 4PY

25/3738/HSEHouseholder ApplicationApproved
Householder

Approved on 5 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

Repositioning of the conservation rooflights in the ground floor extension; Repositioning of the rooflights to the basement including reduction in number of rooflights from five to four; Alterations to the stairs to the basement to tie into the landscaping strategy

Received
10 September 2025
Ward
High Barnet
Agent
HGH Consulting
  1. Received10 Sep
  2. Validated30 Sep
  3. Consult.
  4. Target25 Nov
  5. Decided5 Mar

Decided in 156 days (council typically 56)

About this application

This is a full planning application for an extension at 66 Hadley Highstone Barnet EN5 4PY. Barnet has handled 4,516 applications of this type. This one was decided in 176 days, 17 weeks longer than Barnet's typical decision time. The site is in the Monken Hadley conservation area, with 1 listed building nearby. There have been 22 other applications at this address. In the past year there have been 231 applications across High Barnet. We hold 3,740 applications in total for the EN5 postcode area.

77% of full 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
EN5 4PY
Application type
Householder Application
Scale / size
Small

Planning application dates

Date validated
30 September 2025
Consultation expiry
30 October 2025
Target decision date
25 November 2025

Applicant and agent

Agent
HGH Consulting
Agent address
30 Newman Street London W1T 1PT

Planning decision

Statutory period
56 days

Publicity

Last advertised
9 October 2025
Advertisement expiry
30 October 2025
Site notice start
9 October 2025
Site notice end
30 October 2025

Additional information

Planning Portal ID
PP-14304994
Comments
0
Documents
17

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Monken Hadley
  • Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1+1 more
  • Green belt: BarnetPart of the site
  • Registered battlefield: Battle of Barnet 1471
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (20)

flood storage areas, listed buildings, tree preservation orders, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, 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

20 other applications at this property, newest first.

  1. 2025
    16 Jul

    1 x Ash (applicants ref. T7) - Fell. 1 x Poplar (applicants ref. T8) - Fell.

    ApprovedTrees: Notices of IntentTCP/0426/25
  2. 2025
    10 Mar

    Variation of condition 1 (Approved Plans) of appeal decision App/N050/D/24/3344391

    RefusedVariation of conditions (s73)25/1013/S73
  3. 2024
    18 Sep

    First floor side extensions to north and south elevations. Alterations to roof including relocation of dormer…

    RefusedRetention/Continued Use24/3673/RCU
  4. 2023
    19 Dec

    Submission of details of condition 4 (Stage 1 - written scheme of investigation) pursuant to planning…

    ApprovedDischarge of conditions23/5414/CON
  5. 2023
    20 Nov

    Variation of condition 1 (Approved Plans) of planning permission reference 22/3606/HSE

    RefusedVariation of conditions (s73)23/4941/S73
  6. 2023
    4 May

    Variation of condition 1 (Approved Plans) of planning permission reference 22/3606/HSE

    WithdrawnVariation of conditions (s73)23/1940/S73

Source: Barnet

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

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