25 De Laune Street London Southwark SE17 3UU

This site has had 4 applications since 2025: 1 approved, 0 refused.

• 26/AP/2162 Awaiting decision

  25 De Laune Street London Southwark SE17 3UU

  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.

  Submitted 22 Jul 2026 Amendments
• 26/AP/2099 Decided

  25 De Laune Street London Southwark SE17 3UU

  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

  Decided 10 Aug 2026 Conditions
• 25/AP/3455 Granted

  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.

  Decided 16 Jan 2026 Householder

1. 22 Jul 2026

   Received by Southwark

2. 23 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 28 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 17 September 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 51 days over the applications it decided in the last year.

• 25/AP/3455 Granted

  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.

  Decided 16 Jan 2026 Householder

This application is with Southwark for determination, against a statutory target of eight weeks. Over the last year Southwark decided amendment applications in a median of 56 days. More in our guide to how long planning decisions take.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 25 De Laune Street London Southwark SE17 3UU

  25/AP/3455 Submitted 27 Nov 2025 0m away

  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 docs
  Small domestic

• 25 De Laune Street London Southwark SE17 3UU

  26/AP/2099 Submitted 16 Jul 2026 0m away

  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

  Decided Conditions Extension Loft or dormer +2 9 docs
  Small domestic

• 25 De Laune Street London Southwark SE17 3UU

  26/AP/2162 Submitted 22 Jul 2026 12m away

  97% 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 docs
  Small domestic

• 53 De Laune Street London Southwark SE17 3UR

  22/AP/2768 Submitted 3 Aug 2022 38m away

  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 docs
  Domestic

• 38A De Laune Street London Southwark SE17 3UR

  26/AP/2110 Submitted 17 Jul 2026 45m away

  95% historically approved · decision due ~11 Sep

  Proposed new rear first floor terrace and associated doors.

  Decided

• 38 Sharsted Street London Southwark SE17 3TN

  25/AP/3270 Submitted 10 Nov 2025 49m away

  95% historically approved · decision due ~13 Jan

  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.

  Awaiting decision Householder Extension Loft or dormer +1 9 docs
  Domestic

• 26/AP/2021 Granted

  Unit 1A Vanguard Court Rear Of 36 To 38 Peckham Road London Southwark SE5 8QT

  Variation of Conditions 1 (Approved plans) pursuant to planning permission 25/AP/2903 (Construction of a first-floor roof extension to provide 5 additional light industrial (Class E(g)(iii)) studio/workshop units, together with associated access via external staircase and a green roof area.) Amendment sought: To amend the approved roof covering material to standing seam metal roofing, addition of 8No. rooflights, and revision to the material of the approved external staircase.

  10 Jul 2026 Amendments
• 26/AP/0728 Granted

  Townsend House Strathnairn Street London Southwark SE1 5BU

  Variation of condition 6 of planning permission ref no. 22/AP/3683 ( Demolition of existing garages and construction of four storey and five storey buildings providing 18 residential apartments (two x 1-bedroom units, nine x 2-bedroom units, seven x 3-bedroom units) with associated estate-wide hard and soft landscaping, cycle parking and refuse storage and the replacement of the existing substation). To split Condition 6 (Arboricultural Method Statement) in two parts of 6a and 6b.

  12 Mar 2026 Amendments
• 26/AP/1775 Granted

  52 Ulverscroft Road London Southwark SE22 9HG

  Variation of Condition 4 (Plant Noise) pursuant to planning permission 24/AP/2818 (Construction of a single rear/side infill extension and a 1st floor extension to the outrigger. Loft conversion including roof ridge raise by 300mm, rear roof dormer and roof outrigger dormer. Installation of 2no. rooflights to the front roof slope. Replacement of all windows and external doors, PV panels to the front roof slope and rear outrigger roof and installation of air source heat pump in rear garden). Variation seeks to amend: To remove the requirement for plant sound output level to 10dB below background.

  18 Jun 2026 Amendments
• 26/AP/1610 Granted

  170 Lynton Road London Southwark SE1 5RB

  Variation of Condition 1 (approved plans) of planning permission 25/AP/3741 (Construction of ground floor side infill extension; 6 rooflights to pitched roof and facade alterations.) Amendment sought: To allow the party wall to be astride the boundary.

  5 Jun 2026 Amendments
• 26/AP/1418 Granted

  Cypress Tree House Dulwich Common London Southwark SE21 7EU

  Variation of Condition 1 (approved plans) pursuant to planning permission ref: 25/AP/1310 dated 30.07.2025 for 'Construction of a single storey extension in the rear garden, installation of solar panels to the existing outrigger roof, new dormer windows to the rear and side roof light to the main roof, replacement of existing windows and door, alterations to some windows and doors, and replacement of the existing lean to shed roof.' Amendment sought: 1. Addition of a roof light to main roof flat roof 2. Repositioning of dormers

  18 May 2026 Amendments