Planning application
23 Lansdowne Hill London Lambeth SE27 0LP
Works: Extension Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of a mansard roof extension with the installation of two front and two rear dormer windows.
As published by the council, reference 25/03401/FUL
Application record
- Reference
- 25/03401/FUL
- Type
- Full Planning Permission
- Status
- Decided
- Decision
- Grant Permission
- Received
- 30 Oct 2025
- Validated
- 30 Oct 2025
- Decided
- 23 Dec 2025
- Ward
- Knights Hill
- Decision by
- Delegated Decision
- Postcode
- SE27 0LP
Timeline
Dates from the published record
-
30 Oct 2025
Received by Lambeth
-
23 Dec 2025
Decision issued: Grant Permission
-
11 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, a planning consultancy registered in London
16 applications on PlanIndex · across 6 councils · 50% granted
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See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
12 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Lambeth granted permission on 23 December 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 500 metres
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23 Lansdowne Hill London SE27 0LP
Application for prior approval for the erection of a single-storey ground-floor rear extension with dimensions of 4.80m (length), 2.80m (total maximum height) and 2.80m (height to the eaves).
Decided Prior approval Extension 7 docsSmall domestic -
41 Lansdowne Hill London SE27 0LP
Application for a Certificate of Lawful Development (Existing) with respect to building works to ground floor at rear of property to: - replace roof of existing lean-to extension with a new zinc roof continuing across covered access to repositioned back door and a new bay window extension - change fenestration of existing lean-to and form galley kitchen inside to replace existing bathroom - clad walls of both new bay-window extension and re-roofed lean-to with timber - re-configure internal layout to make better use of space, improve amenities and rationalise services (property was previously subdivided)
Withdrawn Lawful development Extension Windows or glazing 9 docs -
6 Lansdowne Hill London SE27 0AR
93% historically approved · decision due ~29 Apr
Approval of details pursuant to Condition 2 (approved plans), Condition 42 ( BREEAM UK New Construction 2014), Condition 43( BREEAM UK New Construction 2014), Condition 44 (BREEAM Refurbishment and Fit-out (Parts 3 and 4) 2014), Condition 45 (BREEAM Refurbishment and Fit-out (Parts 3 and 4) 2014) for planning permission 19/02840/FUL (Demolition of the existing buildings and erection of a part 6 and part 7 storey building to provide 51 residential flats (Use Class C3) with amenity space at 5th floor level, and erection of a separate 4 storey office building (Use Class B1(a)), together with provision of cycle stores, car parking spaces, refuse/recycling stores, landscaping and new pedestrian links) 13.03.2020
Awaiting decision Conditions New dwelling Demolition 2 docs -
6 Lansdowne Hill London SE27 0AR
93% historically approved · decision due ~29 Apr
Approval of details pursuant to Condition 16 ( noise and vibration attenuation),17(Noise levels) for planning permission 19/02840/FUL (Demolition of the existing buildings and erection of a part 6 and part 7 storey building to provide 51 residential flats (Use Class C3) with amenity space at 5th floor level, and erection of a separate 4 storey office building (Use Class B1(a)), together with provision of cycle stores, car parking spaces, refuse/recycling stores, landscaping and new pedestrian links) 13.03.2020
Awaiting decision Conditions New dwelling Demolition 1 doc -
6 Lansdowne Hill London SE27 0AR
83% historically approved · decision due ~30 Sep
Application for deed of variation to S106 agreement pursuant to planning permission ref: 19/02840/FUL (Demolition of the existing buildings and erection of a part 6 and part 7 storey building to provide 51 residential flats (Use Class C3) with amenity space at 5th floor level, and erection of a separate 4 storey office building (Use Class B1(a)), together with provision of cycle stores, car parking spaces, refuse/recycling stores, landscaping and new pedestrian links) granted on 13.03.2020. Amendment sought: Replacement of the agreed Social Rent and Shared Ownership tenures with Affordable Rent capped at the applicable Local Housing Allowance (LHA) rates; conversion of the 5 Shared Ownership units to Affordable Rent; provision for initial occupation by Assured Shorthold Tenancies; and removal/amendment of the requirement for transfer to a Registered Provider.
Decided New dwelling Demolition -
6 Lansdowne Hill London SE27 0AR
Approval of details pursuant to Condition 47 (Part G water Efficiency calculations) for planning permission 19/02840/FUL (Demolition of the existing buildings and erection of a part 6 and part 7 storey building to provide 51 residential flats (Use Class C3) with amenity space at 5th floor level, and erection of a separate 4 storey office building (Use Class B1(a)), together with provision of cycle stores, car parking spaces, refuse/recycling stores, landscaping and new pedestrian links).13.03.2020 dated
Granted Conditions New dwelling Demolition 3 docs
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