44 Archdale Road London Southwark SE22 9HJ

1. 23 Mar 2026

   Received by Southwark

2. 24 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 May 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

• 25 Crawthew Grove London Southwark SE22 9AA

  25/AP/3535 Submitted 4 Dec 2025 24m away

  Construction of a single storey rear extension.

  Granted Householder Extension 10 docs
  Small domestic

• 51 Archdale Road London Southwark SE22 9HL

  26/AP/2341 Submitted 5 Aug 2026 29m away

  95% historically approved · decision due ~1 Oct

  Proposed alterations to ground floor extension, first floor rear extension, loft conversion with L-shaped dormer ,raised roof ridge by 0.35m, three rooflights to front roof slope, window replacements to front and rear, and all associated works at 51 Archdale Road, London, SE22 9HL

  Awaiting decision Extension Loft or dormer +1

• 4B Lacon Road London Southwark SE22 9HE

  25/AP/3341 Submitted 14 Nov 2025 34m away

  91% historically approved · decision due ~15 Jan

  Construction of a roof terrace on first floor roof.

  Awaiting decision Full applications 9 docs

• 26A Crawthew Grove London Southwark SE22 9AB

  20/AP/2332 Submitted 17 Aug 2020 53m away

  Variation of Condition 1 (Approved Plans) pursuant to 19/AP/2032 (Construction of single storey side and rear extension) for reduced depth of side return extension from 8.00m to 4.60m, reduced depth of rear extension from 4.70m to 2.40m, increased height of joint party wall (side extension) from 2.20m to 2.70m along boundary of no. 28 and increased height of party wall (rear extension) from 2.50m to 2.75m along boundary of no. 24.

  Granted Amendments Extension 13 docs
  Small domestic

• 51 Archdale Road London Southwark SE22 9HL

  23/AP/2994 Submitted 25 Oct 2023 55m away

  Alterations to the existing single storey side extension roof and changes to the rear fenestration

  Granted Householder Extension Windows or glazing 13 docs
  Small domestic

• 51 Archdale Road London Southwark SE22 9HL

  23/AP/2995 Submitted 25 Oct 2023 55m away

  Increase in height of the ridge by approx 350mm to facilitate the construction of a rear roof extension and outrigger dormer

  Granted Householder Extension Loft or dormer 13 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