40 Strathnairn Street London Southwark SE1 5BL

1. 12 Aug 2026

   Received by Southwark

2. 3 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 3 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 29 October 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 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.

This page mirrors an entry on the statutory planning register that Southwark is required to keep. The published feed for this record does not state which type of application it is, which is common for older entries and for some council systems; the register entry on the council portal will say, alongside the case officer and any consultation dates.

Every planning application follows the same broad path: submission, validation, publicity, then a decision by officers or committee. Our guide to planning application types explains the common types and what each can approve.

• 40 Strathnairn Street London Southwark SE1 5BL

  26/AP/1420 Submitted 18 May 2026 4m away

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

  Granted Lawful development Extension Loft or dormer 20 docs

• 38 Strathnairn Street London Southwark SE1 5BL

  20/AP/2230 Submitted 7 Aug 2020 8m away

  The construction of a single storey rear extension; the addition of a Juliet balcony and two windows to the rear elevation and one window to the front; and alterations to the fenestration of the front porch.

  Granted Householder Extension Windows or glazing 24 docs
  Small domestic

• 10 Strathnairn Street London Southwark SE1 5BL

  22/AP/3285 Submitted 15 Sep 2022 47m away

  Construction of a ground floor rear extension and the installation of a roof light.

  Granted Householder Extension Loft or dormer 16 docs
  Domestic

• 10 Strathnairn Street London Southwark SE1 5BL

  22/AP/1542 Submitted 29 Apr 2022 47m away

  Construction of a part single storey part two storey extension to the rear and the installation of a roof light.

  Granted Householder Extension Loft or dormer 13 docs
  Small domestic

• 17 Trothy Road London Southwark SE1 5RR

  20/AP/2297 Submitted 13 Aug 2020 66m away

  Certificate of Lawful Development (Proposed) for the demolition existing conservatory and the construction of a new 3m deep rear extension, retractable hoarding, new decking, new pergola and new shed.

  Granted Lawful development Extension Demolition 25 docs
  Small domestic

• 22 Trothy Road London Southwark SE1 5RR

  26/AP/1357 Submitted 12 May 2026 94m away

  Certificate of lawfulness (proposed) for single storey rear extension; rear dormer extension and front porch.

  Granted Lawful development Extension Loft or dormer 11 docs
  Small domestic