Flat 8, 20 Onslow Square, London, SW7 3NP
Approved on 11 August 2026
Council decision: Grant Planning Permission/Consent2 conditions
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
General refurbishment of flat with minimal layout and non-original fabric changes, replacement of windows and installation of an AC condenser on existing terrace.
- Received
- 12 June 2026
- Ward
- Courtfield
- ReceivedReceived12 Jun
- ValidatedValidated12 Jun
- Consult.Consultation10 Jul
- TargetTarget Date7 Aug
- DecidedDecided11 Aug
Decided in 60 days (council typically 56)
About this application
This is a heritage application for window replacement at Flat 8, 20 Onslow Square, London, SW7 3NP. Kensington has handled 1,418 applications of this type. This one was decided in 60 days, 4 days longer than Kensington's typical decision time. The site is in the Thurloe Estate and Smith's Charity conservation area, with 9 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 191 applications across Courtfield. We hold 1,522 applications in total for the SW7 postcode area.
93% of heritage applications at Royal Borough of Kensington and Chelsea 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
Application details
- Postcode
- SW7 3NP
- Application type
- Listed Building Consent
- Scale / size
- Small
- Parish
- 06
- District
- Thurloe and Smith's Charity
Planning application dates
- Date validated
- 12 June 2026
- Consultation expiry
- 10 July 2026
- Consultation end
- 10 July 2026
- Target decision date
- 7 August 2026
Planning decision
- Case officer
- Vsevolod Lobov
- Statutory period
- 56 days
Additional information
- Documents
- 15
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Thurloe/Smith's Charity
- Article 4 direction: Article 4 - No 100
- Tree Preservation OrderCovers the site
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (20)
flood storage areas, 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.
Associated applications
- 202612 Jun
General refurbishment of flat with minimal layout and non-original fabric changes, replacement of windows and…
This applicationApprovedHeritageLB/26/03108 - 202612 Jun
General refurbishment of flat, minimal layout and non-original fabric changes, replacement of windows and…
ApprovedPlanning PermissionFiled alongsidePP/26/03137
Source: Kensington
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 SW7
New planning applications delivered to your inbox daily.
Around this site
Nearby applications
- Flat 8, 20 Onslow Square, London, SW7 3NPPP/26/03137 · FullApproved0.0 mi
- Flat 2B, Avenue Studios, Sydney Close, London, SW3 6HWCON/25/02699 · ConditionsApproved0.0 mi
- Flat 7, 32 Onslow Square, London, SW7 3NSPP/23/05799 · FullApproved0.0 mi
- Flat 7, 32 Onslow Square, London, SW7 3NSLB/23/05800 · HeritageApproved0.0 mi
- 62-64 Fulham Road, LONDON, SW3 6HHCA/23/04648 · AdvertisingApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for renovations & refurbishments near this site- Avent Roofing ServicesVerifiedWestminsterRoofing1.8 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman2.6 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.1 mi
- Orient Construction Consultancy LimitedVerifiedLondon5.8 mi
Planning something similar?
See what the council approved and refused for window and door replacements on your street. Pick your home and get the evidence before you pay for drawings.