Planning application
38 Sharsted Street London Southwark SE17 3TN
Works: Extension Loft or dormer Windows or glazing Domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Mansard Roof Extension. Brickwork to match existing London stock brickwork with a stone coping finish. The front and rear mansard elements construction finished with traditional slate and double glazed sash windows set within dormer projections. The proposed mansard would include 2 'dormer' windows to the front elevation and 2 'dormer' windows to the rear elevation.
As published by the council, reference 25/AP/3270
Application record
- Reference
- 25/AP/3270
- Type
- Householder Application
- Status
- Under consideration/assessment
- Received
- 10 Nov 2025
- Validated
- 18 Nov 2025
- Ward
- Newington
- Parish
- Borough, Bankside And Walworth
- Postcode
- SE17 3TN
Timeline
Dates from the published record
-
10 Nov 2025
Received by Southwark
-
18 Nov 2025
Validated
Checked as complete and ready for consideration.
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 January 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Southwark took a median of 52 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
9 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.
Trade members open them from here.
Open the documentsWhat happens while it is decided
This application is with Southwark for determination, against a statutory target of eight weeks. Over the last year Southwark decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
25 De Laune Street London Southwark SE17 3UU
95% historically approved · decision due ~16 Sep
Variation of Conditions pursuant to planning permission 25/AP/3455 (Demolition of the existing rear addition and the construction of a single-storey side and rear extension and an outrigger dormer extension; the replacement of the windows to the side and rear of the dwelling with timber framed double glazed units; addition of rooflight to existing mansard; and the addition of a Juliet balcony to the rear elevation, to replace the existing window.) Sought: To reflect the existing rear sash window location against the proposed rear extension height.
Awaiting decision Amendments Extension Loft or dormer +2 6 docsSmall domestic -
25 De Laune Street London Southwark SE17 3UU
95% historically approved · decision due ~17 Sep
Variation of Condition pursuant to planning permission 25/AP/3455 (Demolition of the existing rear addition and the construction of a single-storey side and rear extension and an outrigger dormer extension; the replacement of the windows to the side and rear of the dwelling with timber framed double glazed units; addition of rooflight to existing mansard; and the addition of a Juliet balcony to the rear elevation, to replace the existing window.) Sought: Rear extension height measurement adjustment & Outrigger extension cladding change (lead clad dormer to slate tiles)
Awaiting decision Extension Loft or dormer +2Small domestic -
25 De Laune Street London Southwark SE17 3UU
95% historically approved · decision due ~11 Sep
Non-material amendment of planning permission 25/AP/3455 (Demolition of the existing rear addition and the construction of a single-storey side and rear extension and an outrigger dormer extension; the replacement of the windows to the side and rear of the dwelling with timber framed double glazed units; addition of rooflight to existing mansard; and the addition of a Juliet balcony to the rear elevation, to replace the existing window.) NMA: Proposed rear and side extension copper cladding to be replaced by reclaimed London stock bricks matching the rest of the facade
Awaiting decision Extension Loft or dormer +2Small domestic -
25 De Laune Street London Southwark SE17 3UU
Demolition of the existing rear addition and the construction of a single-storey side and rear extension and an outrigger dormer extension; the replacement of the windows to the side and rear of the dwelling with timber framed double glazed units; addition of rooflight to existing mansard; and the addition of a Juliet balcony to the rear elevation, to replace the existing window.
Granted Householder Extension Loft or dormer +2 17 docsSmall domestic -
38A De Laune Street London Southwark SE17 3UR
95% historically approved · decision due ~11 Sep
Proposed new rear first floor terrace and associated doors.
Awaiting decision -
53 De Laune Street London Southwark SE17 3UR
Certificate of lawfulness (existing): The property is currently being used as six self-contained flats within use class C3 dwelling houses.
Granted Lawful development New dwelling 7 docsDomestic
Other householder applications
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26/AP/0707 Granted
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Construction of a rear dormer extension and ground floor rear extension.
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26/AP/0784 Granted
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Refurbishment of the property including replacement of glazing with thermally efficient conservation windows templated after originals, construction of a single-storey rear extension, a loft extension, minor internal partition alterations, and removal of external soil vent pipes.
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26/AP/1488 Granted
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Loft conversion including the insertion of 2 no. rooflights to the front roof slope; conversion of the existing garage to a habitable room with an associated window to replace the existing garage door on the front elevation, installation of an Air Source Heat Pump and other alterations to the rear elevation fenestration at ground floor level.
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26/AP/0971 Granted
86 Henslowe Road London Southwark SE22 0AS
Retrospective planning permission for alterations to front garden layout including a front porch with projecting canopy, alterations to window apertures and fenestration, provision of cycle and refuses stores, along with hard and soft landscaping. new bin store and raised porch roof and revisions to front elevation fenestration.
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26/AP/1519 Granted
61 Tyrrell Road London Southwark SE22 9NE
Construction for a rear and side wrap around ground floor extension