Planning application
40 Hargwyne Street London Lambeth SW9 9RG
Works: Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of a mansard roof extension and rear roof extension to the outrigger.
As published by the council, reference 26/00218/FUL
Application record
- Reference
- 26/00218/FUL
- Type
- Full Planning Permission
- Status
- Decided
- Decision
- Granted As published: Grant Permission
- Received
- 25 Jan 2026
- Validated
- 13 Feb 2026
- Decided
- 23 Apr 2026
- Ward
- Brixton North
- Decision by
- Delegated Decision
- Postcode
- SW9 9RG
Timeline
Dates from the published record
-
25 Jan 2026
Received by Lambeth
-
13 Feb 2026
Validated
Checked as complete and ready for consideration.
-
23 Apr 2026
Decision issued: Grant Permission
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
de Vos Studio Agent, registered in London
Dissolved · incorporated 2025 · London
2 applications on PlanIndex
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Plans, drawings, consultee responses and the officer's report
15 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 April 2026, 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 0.3 miles
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47 Mordaunt Street London SW9 9RD
Application for a Certificate of Lawful development (proposed) with respect to erection of a roof extension to the rear outrigger and part rear roof extension.
Granted Lawful development Extension 5 docs -
23 Mordaunt Street London SW9 9RD
78% historically approved · decision due ~20 Aug
Erection of a single storey ground floor rear and side infill extension.
Decided Full applications Extension 10 docsSmall domestic -
51 Mordaunt Street London SW9 9RD
Certificate of Lawful Development (proposed) in respect of the erection of a rear/side dormer extension over the outrigger with the installation of two front rooflights and a rear rooflight and the installation of a first floor rear side window.
Granted Lawful development Extension Loft or dormer +1 11 docs -
45 Hargwyne Street London SW9 9RQ
Erection of single storey ground floor rear and side infill extensions, alterations to windows to the side elevation at first floor level, alterations to roof over the rear return involving replacement of a pitched roof with a flat roof incorporating a domed skylight (part retrospective).
Refused Full applications Extension Windows or glazing 11 docsSmall domestic -
39 Hargwyne Street London SW99RQ
Erection of a side and rear ground floor extension.
Refused Full applications Extension 10 docs -
39 Hargwyne Street London SW9 9RQ
Application for a Certificate of Lawful Development (Proposed) with respect to the erection of rear and side infill extensions together with the erection of a rear dormer and installation of 3 front rooflights and a second floor rear extension incorporating a Juliet balcony.
Refused Lawful development Extension Loft or dormer 16 docs
Other full applications
In Lambeth
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26/03073/FUL Awaiting decision
10 Claverdale Road London SW2 2DP
Erection of a single storey ground floor rear side infill extension. Erection of a rear dormer roof extension with juliet balcony and installation of a roof light to rear return roof.
-
26/03040/FUL Awaiting decision
3 Walberswick Street London Lambeth SW8 1XF
Erection of a second-storey rear extension and the addition of a window to the mansard. Reduction from a double sliding door to a single door with a Juliet balcony
-
26/03004/FUL Awaiting decision
61 Amesbury Avenue London Lambeth SW2 3AE
Erection of a single storey rear infill extension, replacement of the existing timber sash windows with double glazed timber sash windows, erection of new fence to front patio and installaton of Air Source Heat Pump to existing roof.
-
26/02988/FUL Awaiting decision
76 Bonham Road London Lambeth SW2 5HG
Change of use of the ground floor to self contained unit (class C3), upper floors and loft to a large House in Multiple Occupation (Sui Generis), together with sub-division of the rear garden, installation of 2x rooflights to front roofslope, conversion of the existing garage to ancillary residential gym use, installation of air source heat pumps, and provision of cycle and refuse storage.
-
26/02996/FUL Awaiting decision
Surrey County Cricket Club Kennington Oval London Lambeth SE11 5SS
Extension of the existing external balcony on third floor pitch-facing elevation and installation of minor additional plant at roof level.