21 Sansom Street London Southwark SE5 7RD

1. 11 Jan 2021

   Received by Southwark

2. 12 Jan 2021

   Validated

   Checked as complete and ready for consideration.

3. 21 Feb 2021

   Decision issued: Certificate of Lawfulness Prop- GRANTED

4. 4 Aug 2026

   Added to PlanIndex

Southwark granted permission on 21 February 2021, 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 39 Sansom Street London Southwark SE5 7RD

  26/AP/2412 Submitted 12 Aug 2026 10m away

  95% historically approved · decision due ~8 Oct

  Construction of L shaped rear dormer extension, including 3no. rooflights to front roof slope and increase the ridge height by 400mm.

  Awaiting decision Extension Loft or dormer +1

• 11 Sansom Street London Southwark SE5 7RD

  22/AP/2435 Submitted 7 Jul 2022 26m away

  Non-Material amendment required by planning permission 15/AP/2941 Erection of a single storey ground floor side extension and a rear dormer

  Decided Conditions Extension Loft or dormer 5 docs
  Small domestic

• 35 Sansom Street London Southwark SE5 7RD

  22/AP/3431 Submitted 3 Oct 2022 35m away

  Certificate of Lawfulness (proposed) formation of rear dormer and insertion of two roof lights to the front elevation

  Granted Lawful development Loft or dormer 7 docs

• 128 Benhill Road London Southwark SE5 7LZ

  22/AP/2859 Submitted 12 Aug 2022 38m away

  Construction of a ground floor rear extension and a second floor mansard roof extension. New rooflight to first floor outrigger.

  Granted Householder Extension Loft or dormer 36 docs
  Domestic

• 8 Sansom Street London Southwark SE5 7RE

  19/AP/7464 Submitted 17 Dec 2019 49m away

  Demolition of existing rear extension and construction of single storey side and rear extension.

  Granted Householder Extension Demolition 18 docs
  Small domestic

• 152 Benhill Road London Southwark SE5 7LZ

  26/AP/1419 Submitted 18 May 2026 61m away

  Ground floor rear extension

  Granted Householder Extension 24 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