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House excluding basement flat, 41 Sydney Street, LONDON, SW3 6PZ

LB/26/00412All OtherApproved

Approved on 26 June 2026

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

Construction of a mansard roof extension at third floor level, addition of a single-storey extension to the rear closet wing at second floor level, replacement of the existing two-storey infill extension beside the closet wing with a smaller single-storey infill extension at ground-floor level, internal and external alterations.

Submitted
19 January 2026
  1. Received19 Jan
  2. Validated
  3. Consult.
  4. Target
  5. Decided26 Jun

Decided in 158 days (council typically 56)

About this application

This is a planning application for an extension at House excluding basement flat, 41 Sydney Street, LONDON, SW3 6PZ. Kensington has handled 1,474 applications of this type. This one was decided in 158 days, 15 weeks longer than Kensington's typical decision time. The site is in the Chelsea conservation area, with 4 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 185 applications across Stanley. We hold 1,788 applications in total for the SW3 postcode area.

95% of all other 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
SW3 6PZ
Application type
All Other

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Chelsea
  • Listed building: 7-67 Sydney StreetOn or next to this site
  • Article 4 direction: Article 4 - No 100
  • Tree Preservation OrderCovers the site
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

flood storage 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.

Planning history at this site

5 other applications at this property, newest first.

  1. 2026
    2 Oct

    Variation of condition 2 (compliance with approved drawings) of planning permission PP/26/00411

    PendingVariation of conditions (s73)PP/26/05047
  2. 2026
    9 Mar

    Internal and external alterations including replacement of existing metal stair to front lightwell with new…

    ApprovedListed building consentLB/26/00394
  3. 2025
    9 Dec

    Internal and external alterations including replacement of existing metal stair to front lightwell with new…

    ApprovedPlanning PermissionPP/26/00395
  4. 2025
    11 Jul

    Construction of a mansard roof extension at third floor level, addition of an extension to existing closet…

    WithdrawnListed building consentPP/25/04091
  5. 2025
    11 Jul

    Construction of a mansard roof extension at third floor level, addition of an extension toexisting closet…

    WithdrawnListed building consentLB/25/04092

Source: Kensington

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

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