Planning application
105 Hydethorpe Road London Lambeth SW12 0JF
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 new wrap-around extension; mansard loft extension over outrigger; addition of one extra rooflight to the front; installation of air conditioning unit to outrigger dormer roof; Raise party walls and outrigger chimney; replacement of dormer window with like-for-like.
As published by the council, reference 25/02982/FUL
Application record
- Reference
- 25/02982/FUL
- Type
- Full Planning Permission
- Status
- Decided
- Decision
- Granted As published: Grant Permission
- Received
- 23 Sep 2025
- Validated
- 23 Sep 2025
- Decided
- 17 Nov 2025
- Ward
- Streatham Hill West & Thornton
- Decision by
- Delegated Decision
- Postcode
- SW12 0JF
Timeline
Dates from the published record
-
23 Sep 2025
Received by Lambeth
-
17 Nov 2025
Decision issued: Grant Permission
-
11 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Armstrong Simmonds Architects Ltd. Agent, an architecture practice registered in Battersea
Active · incorporated 2010 · Battersea
25 applications on PlanIndex · across 7 councils · 89% granted
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Plans, drawings, consultee responses and the officer's report
13 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 17 November 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 0.3 miles
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103 Hydethorpe Road London SW12 0JF
Certificate of Lawfulness (proposed) with respect to the erection of an L-shaped rear dormer together with the installation of 3 rooflights to the front elevation.
Granted Lawful development Loft or dormer 5 docs -
145 Hydethorpe Road London SW12 0JF
78% historically approved · decision due ~27 Jul
Erection of a hip to gable roof extension with a rear mansard roof extension and a pod roof extension to the outrigger including an obscured glazed window on each side plus roof lights and the installation of two front roof lights.
Decided Full applications Extension Loft or dormer +1 12 docs -
111 Hydethorpe Road London SW12 0JF
84% historically approved · decision due ~13 Nov
Certificate of Lawful Development (Proposed) with respect to the demolition of existing shed and erection of a single storey outbuilding (garden room) in the rear garden.
Awaiting decision DemolitionSmall domestic -
111 Hydethorpe Road London SW12 0JF
Demolition of existing shed and erection of a single storey outbuilding in the rear garden.
Refused DemolitionSmall domestic -
145 Hydethorpe Road London SW12 0JF
78% historically approved · decision due ~27 Oct
Erection of a hip-to-gable roof extension with a rear mansard roof extension, plus a pod roof part extension with a window on each side above the outrigger and the installation of two front roof lights.
Awaiting decision Full applications Extension Loft or dormer +1 11 docs -
97 Hydethorpe Road London SW12 0JF
Certificate of Lawfulness (proposed) with respect to the erection of a loft conversion including rear dormer extension with Juliet balcony and installation of 3no. rooflights to front elevation; removal of pebble dash to front elevation.
Granted Lawful development Extension Loft or dormer 13 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.
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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
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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.
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26/02990/FUL Awaiting decision
85 Clapham Manor Street London Lambeth SW4 6DR
Construction of a mansard-roof extension to provide additional residential accommodation.
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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.