Skip to content

68 Hadley Highstone Barnet EN5 4PY

26/1417/RCURetention/Continued UseRefused
Discharge / amendments

Refused on 19 August 2026

1 reason 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

First floor side extension. Roof extension involving side and rear dormer window (Retrospective Application)

Received
16 April 2026
Public comments
1
Ward
High Barnet
Agent
G2 Architecture
  1. Received16 Apr
  2. Validated16 Apr
  3. Consult.
  4. Target11 Jun
  5. Decided19 Aug

Decided in 125 days (council typically 56)

About this application

This is an application to amend a permission at 68 Hadley Highstone Barnet EN5 4PY. Barnet has handled 579 applications of this type. This one was decided in 125 days, 10 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 2 other applications at this address. In the past year there have been 231 applications across High Barnet. We hold 3,745 applications in total for the EN5 postcode area.

70% of amendment 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

Why it was refused

  1. The as-built side and rear dormer windows, by reason of their excessive size, scale, bulk and prominence, fail to appear as subordinate additions to the host dwelling and result in dominant and visually intrusive features within the roofscape, giving rise to a top-heavy and incongruous form of development. Furthermore, the scale, design and detailing of the dormers, together with the use of uPVC materials, fail to preserve or enhance the character and appearance of the Monken Hadley Conservation Area and result in less than substantial harm to the significance of the Monken Hadley Conservation Area. There are no public benefits therefore it is considered that the harm to the character and appearance of the Conservation Area is outweighed by the benefits. As such, the development is contrary to Policies CDH01, CDH05 and CDH08 of the Barnet Local Plan (2025), the Residential Design Guidance SPD, Policies D3 and HC1 of the London Plan (2021), and the design and heritage objectives of the National Planning Policy Framework.

From the council's decision notice.

Application details

Postcode
EN5 4PY
Application type
Retention/Continued Use
Scale / size
Small

Planning application dates

Date validated
16 April 2026
Consultation expiry
14 May 2026
Target decision date
11 June 2026

Applicant and agent

Agent
G2 Architecture
Architect profile
G2 ARCHITECTURE LIMITED
Agent address
Office 3, Broadmeads Pumping Station Hertford Road Ware SG12 9LH

Planning decision

Statutory period
56 days

Publicity

Last advertised
23 April 2026
Advertisement expiry
14 May 2026
Site notice start
23 April 2026
Site notice end
14 May 2026

Additional information

Planning Portal ID
PP-14860887
Documents
12

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 for Monken Hadley CA Area 1+1 more
  • Registered battlefield: Battle of Barnet 1471
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

flood storage areas, listed buildings, tree preservation orders, green belt, 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.

Source: Barnet

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

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near EN5

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

Planning something similar?

See what the council approved and refused for two-storey and first-floor extensions on your street. Pick your home and get the evidence before you pay for drawings.

See what gets approved on your streetBuying this property? Report on this address