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342, Streatham High Road, SW16 6HH

25/02134/FULFull planning permissionRefused
Full

Refused on 3 December 2025

3 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

Change of use of first floor office (Use Class E(c)(ii)) into a studio flat (Use Class C3), plus the replacement of windows with UPVC framed windows and the provision of cycle store at ground floor level.

Submitted
23 July 2025
  1. Received23 Jul
  2. Validated
  3. Consult.
  4. Target
  5. Decided3 Dec

Decided in 133 days (council typically 56)

About this application

This is a planning application for a change of use at 342, Streatham High Road, SW16 6HH. Lambeth has handled 719 applications of this type. This one was decided in 133 days, 11 weeks longer than Lambeth's typical decision time. The site is in the Streatham High Road and Streatham Hill conservation area. There are no previous applications recorded at this address. In the past year there have been 36 applications across STRSTL. We hold 3,707 applications in total for the SW16 postcode area.

80% of full planning permission applications at London Borough of Lambeth 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 application fails to demonstrate that there is no reasonable demand for the existing office floorspace. No evidence has been provided of sustained vacancy or active marketing for a minimum period of two years. In the absence of this information, the proposal is contrary to Policy ED1 of the Lambeth Local Plan 2020-2035 (2021).
  2. The proposed replacement of the existing timber-framed windows with double-glazed uPVC units would cause harm to the architectural integrity of the building and result in a low level of less than substantial harm to the London planning@lambeth.gov.uk SW2 9QQ character and appearance of the conservation area. There are no public benefits identified that outweigh this level of harm.
  3. In the absence of a Section 106 agreement securing the new dwelling as 'car parking permit-free,' the development would fail to promote sustainable modes of travel and would not adequately mitigate its transport impacts. This is contrary to Policy T6 of the London Plan (2021) and Policies T1, T3, and T6 of the Lambeth Local Plan 2020-2035 (2021).

From the council's decision notice.

Application details

Postcode
SW16 6HH
Application type
Full planning permission

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Streatham High Road & Streatham Hill
  • Article 4 direction: Modified Direction 3 - Town Centres
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

flood storage areas, listed buildings, tree preservation orders, 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: Lambeth

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

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