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102, Sandy Lane, SM2 7EP

DM2026/00771Householder planning permissionRefused
Householder

Refused on 27 August 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

Erection of a single storey front extension, a first floor side extension, conversion of loft space involving alterations to existing roofline, two dormer extensions at rear and rooflight to front roofslope, alterations to roof of existing single storey side and rear extension including installation of roof lantern and alterations to fenestrations.

Submitted
2 July 2026
  1. Received2 Jul
  2. Validated
  3. Consult.
  4. Target
  5. Decided27 Aug

Decided in 56 days (council typically 56)

About this application

This is a planning application for a dormer extension at 102, Sandy Lane, SM2 7EP. Sutton has handled 638 applications of this type. This one was decided in 56 days. The site is in a conservation area. There has been 1 other application at this address. In the past year there have been 124 applications across Cheam. We hold 537 applications in total for the SM2 postcode area.

91% of householder planning permission applications at London Borough of Sutton 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

Why it was refused

  1. The proposed mono-pitched roof at ground floor, due to its excessive width and lack of any set back would create an awkward junction with the front bay feature and would fail to relate sympathetically to the original features of the house, appearing unduly dominant on the principal elevation and resulting in an incongruous and contrived appearance of the built form on this elevation that would cause significant and unacceptable harm to the character and appearance of the original house and the ASLC's street scene, contrary to Policies 28 and 30 of the Sutton Local Plan 2018 and the guidance contained within Supplementary Planning Document 4 'Design of Residential Extensions (SPD 4), SPD 14 'Creating Locally Distinctive Places', as well as 'The Burton Estates' ASLC - Character Appraisal.
  2. The proposal, due to the lack of any set back at first floor, together with the increased ridge height and lack of setdown at roof level, would fail to appear subordinate and would result in a symmetrical built form in an attempt to appear as an originally built house. The proposal would result in significant and unacceptable harm to the character and appearance of the existing dwelling and the Burton Estates' streetscene, characterised with well-established asymmetrical front appearances of the houses. As such, the proposal is contrary to Policies 28 and 30 of the Sutton Local Plan 2018 and the guidance contained in the Council's Supplementary Planning Document 4 'Design of Residential Extensions' (SPD4), as well as 'The Burton Estates ASLC - Character Appraisal' document.

From the council's decision notice.

Application details

Postcode
SM2 7EP
Application type
Householder planning permission

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.

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: Sutton

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

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