7 Trossachs Road London Southwark SE22 8PY

1. 18 Feb 2026

   Received by Southwark

2. 24 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Apr 2026

   Decision issued: Certificate of Lawfulness Prop- GRANTED

4. 10 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

• First Floor And Second Floor Flat 10 Tarbert Road London Southwark SE22 8QB

  25/AP/3298 Submitted 11 Nov 2025 26m away

  91% historically approved · decision due ~7 Jan

  Rear dormer with roolights on front slope plus a roof terrace over part of rear addition roof

  Awaiting decision Full applications Loft or dormer 17 docs

• 18 Glengarry Road London Southwark SE22 8PZ

  23/AP/2027 Submitted 20 Jul 2023 34m away

  Demolition of existing derelict single storey rear additions and the erection of a single storey rear extension with 2 rooflights and the installation of 3 new rooflights on the main roof

  Granted Lawful development Extension Loft or dormer +1 29 docs
  Small domestic

• 14 Trossachs Road London Southwark SE22 8PY

  26/AP/0566 Submitted 25 Feb 2026 39m away

  Demolition of existing rear extension and construction of a new single storey rear extension

  Granted Householder Extension Demolition 15 docs
  Small domestic

• 24A Tarbert Road London Southwark SE22 8QB

  26/AP/1910 Submitted 2 Jul 2026 70m away

  95% historically approved · decision due ~9 Sep

  A proposed ground floor side and rear extension with a lightwell

  Awaiting decision Extension

• Flats A-D 105 East Dulwich Grove London Southwark SE22 8PU

  25/AP/3424 Submitted 24 Nov 2025 71m away

  Details of condition 3 (Construction Environmental Management Plan) pursuant to planning permission 25/AP/0185 granted on 27.08.2025 for: (Construction of rear extensions to the ground floor, first floor and second floor(loft) including private amenity roof terraces and hip to gable roof extension incorporating a front dormer)

  Withdrawn Conditions Extension Loft or dormer 9 docs

• 28 Trossachs Road London Southwark SE22 8PY

  23/AP/2491 Submitted 4 Sep 2023 72m away

  Construction of a single storey ground floor rear extension.

  Granted Householder Extension 23 docs
  Small 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