19 Oswyth Road London Southwark SE5 8NH

1. 12 Sep 2025

   Received by Southwark

2. 15 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 10 November 2025, 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.

This application is with Southwark for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 19 Oswyth Road London Southwark SE5 8NH

  25/AP/2639 Submitted 15 Sep 2025 0m away

  The erection of a side extension to the ground floor, Alterations to the windows and rear garden to a terrace house.

  Granted Householder Extension Windows or glazing 24 docs
  Domestic

• 21 Oswyth Road London Southwark SE5 8NH

  25/AP/3263 Submitted 10 Nov 2025 5m away

  95% historically approved · decision due ~5 Jan

  Side infill extension and loft extension including ridge raise of 300mm

  Awaiting decision Householder Extension Loft or dormer 27 docs
  Domestic

• 27 Oswyth Road London Southwark SE5 8NH

  26/AP/1415 Submitted 18 May 2026 20m away

  Side infill extension, facade alterations, floorplan redesign and all associated works at 27 Oswyth road, SE5 8NH

  Granted Householder Extension 24 docs
  Domestic

• 7 Gairloch Road London Southwark SE5 8NG

  25/AP/3510 Submitted 2 Dec 2025 23m away

  Raise the ridge line by 400mm to provide adequate height for a dormer loft extension to the rear of the main block and the addition of 2no rooflights to the front roof slope.

  Granted Householder Extension Loft or dormer +1 16 docs
  Domestic

• 15 Gairloch Road London Southwark SE5 8NG

  22/AP/3267 Submitted 13 Sep 2022 24m away

  Construction of a L-shaped dormer loft conversion with raised ridge of 0.4m, associated with x1 rooflight; construction of a single-storey side infill ground extension with rooflight.

  Granted Householder Extension Loft or dormer 31 docs
  Small domestic

• 94 Shenley Road London Southwark SE5 8NQ

  23/AP/2043 Submitted 21 Jul 2023 24m away

  Construct a mansard dormer to rear roofslope, including raising of party walls in brickwork, 3no. front facing rooflights, and to refurbish the existing roof terrace including providing new guardings, new terrace floor finish, a privacy screen adjacent neighbours at no. 96., and allowing access from the new dormer onto the roof terrace area.

  Granted Householder Loft or dormer 14 docs
  Domestic

• 26/AP/1316 Granted

  Seavington House Champion Hill London Southwark SE5 8DN

  Certificate of lawfulness (proposed) to confirm excavation works carried out on the site in the form of trial pits constitute a material operation under the Town and Country Planning Act 1990 and therefore represent lawful commencement of the approved planning permission 22/AP/0174.

  7 May 2026 Lawful development
• 26/AP/1420 Granted

  40 Strathnairn Street London Southwark SE1 5BL

  Certificate of lawfulness (proposed) for construction of a ground floor rear extension and a rear dormer.

  18 May 2026 Lawful development
• 26/AP/1618 Granted

  252 Barry Road London Southwark SE22 0JS

  Certificate of lawful development (proposed) for the construction of a rear dormer extension.

  5 Jun 2026 Lawful development
• 26/AP/1577 Granted

  Residence Inn By Marriott London Bridge 201-211 Long Lane London SE1 4PN

  Certificate of lawfulness (proposed) for undertaking of facade remedial works to remove combustible cladding materials and replace with a like-for-like non-combustible cladding with no change to the outer aesthetics of the building.

  2 Jun 2026 Lawful development
• 26/AP/1509 Withdrawn

  Railway Arch 101 Rockingham Street London Southwark SE1 6PD

  Certificate of lawfulness (proposed) for confirmation of implementation of planning permission 22/AP/3065: Change of use of the railway arch at 101 Rockingham Street from Use Class B8 (Storage/Distribution) to Use Classes E (Commercial, Business and Service) and F2 (Local Community) and a new glazed facade to the exterior including 2x extractor fans.

  27 May 2026 Lawful development