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33 Onslow Avenue Cheam SM2 7ED

DM2025/01060Non-Material AmendmentRefused
Discharge / amendments

Refused on 8 October 2025

Council decision: Application RefusedDelegated (officer decision)

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

Non material amendment to approved application DM2023/01555 which allowed the 'Erection of a two-storey rear extension and conversion of existing garage into a habitable room, formation of a front entrance canopy and alterations to fenestration to all elevations, conversion of loft space, involving alterations to the existing roof line, increase of the ridge height of the main roof, two dormers to rear roofslope and a rooflight to front roofslope' to allow the formation of a front entrance porch, alterations to the front entrance door detail, alterations to fenestrations and external finish, installation of an air source heat pump to rear and installation of rooflights to ground floor flank utility room together with roof alterations.

Received
13 August 2025
Decision level
Delegated (officer decision)
Ward
Cheam
Agent
Bell Associates Architects Ltd
  1. Received13 Aug
  2. Validated15 Sep
  3. Consult.
  4. Target13 Oct
  5. Decided8 Oct

Decided in 23 days (council typically 56)

About this application

This is an application to amend a permission at 33 Onslow Avenue Cheam SM2 7ED. Sutton has handled 87 applications of this type. This one was decided in 56 days. The site is in a conservation area. There have been 2 other applications 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.

89% of amendment 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

Application details

Postcode
SM2 7ED
Application type
Non-Material Amendment
Scale / size
Small

Planning application dates

Date validated
15 September 2025
Target decision date
13 October 2025

Applicant and agent

Agent
Bell Associates Architects Ltd
Architect profile
BELL ASSOCIATES ARCHITECTS LIMITED
Agent address
Millgrove House 77 Farleigh Road Warlingham CR6 9EJ

Planning decision

Statutory period
28 days

Additional information

Comments
0
Documents
6
Constraints
16

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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