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1, Sunnyside Road East, N9 9SP

26/01560/FULFull planning permissionRefused
Full

Refused on 17 July 2026

2 reasons 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

Conversion of dwelling house into 2 self contained flats involving changes to ground floor fenestration.

Submitted
26 May 2026
  1. Received26 May
  2. Validated
  3. Consult.
  4. Target
  5. Decided17 Jul

Decided in 52 days (council typically 49)

About this application

This is a planning application at 1, Sunnyside Road East, N9 9SP. Enfield has handled 1,094 applications of this type. This one was decided in 52 days, 3 days longer than Enfield's typical decision time. The site is in a conservation area. There have been 2 other applications at this address. In the past year there have been 114 applications across Edmonton Green. We hold 1,113 applications in total for the N9 postcode area.

68% of full planning permission applications at London Borough of Enfield were approved. Across all application types, the council typically decides in about 7 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 proposed conversion would result in the loss of a 3-bedroom family dwelling and fails to provide adequate compensatory family accommodation, leading to a net reduction in family housing within the borough. This outcome undermines the Council's strategic objective to increase the supply of larger (3+ bedroom) units, which are essential to meeting the housing needs of families. The proposal is therefore contrary to Section 5 of the National Planning Policy Framework (2024), Policy GG4 of the London Plan (2021), Policy CP5 of the Core Strategy (2010), Policies DMD4 and DMD5 of the Development Management Document (2014), and the Council's Strategic Housing Market Assessment (SHMA 2015).
  2. The proposal has failed to demonstrate sufficient measures to ensure that the development is safe from flooding, will not increase flood risk elsewhere and promotes Sustainable Drainage at the site. The proposal is therefore contrary to the NPPF (2024), Policies SI 12 and SI 13 of the London Plan (2021), CP21 and CP28 of Core Strategy (2010) and DMD 60, DMD 61 of the Development Management Document (2014).

From the council's decision notice.

Application details

Postcode
N9 9SP
Application type
Full planning permission

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Article 4 direction: Borough wide
  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (22)

flood storage areas, conservation areas, listed buildings, 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.

Source: Enfield

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

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