40 Strathnairn Street London Southwark SE1 5BL

This site has had 2 applications since 2026: 1 approved, 0 refused.

• 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.

  Decided 4 Aug 2026 Lawful development

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. 23 Oct 2026

   Status changed to Granted

   Previously Under consideration/assessment.

Southwark has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

The published feed does not state which type of application this is; the register entry on Southwark's portal will say. Our guide explains the common types.

• 40 Strathnairn Street London Southwark SE1 5BL

  26/AP/1420 Submitted 18 May 2026 50 yards 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 50 yards 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

• 183 Simms Road London Southwark SE1 5LP

  21/AP/3573 Submitted 12 Oct 2021 50 yards away

  Construction of a single storey rear extension (to replace the existing) and the installation of one ground floor window to the side elevation of the original property.

  Granted Householder Extension Windows or glazing 16 docs
  Small domestic

• 12 Strathnairn Street London Southwark SE1 5BL

  21/AP/3798 Submitted 3 Nov 2021 50 yards away

  Hip to gable roof extension and rear dormer roof extension.

  Granted Lawful development Extension Loft or dormer 8 docs

• 12 Strathnairn Street London Southwark SE1 5BL

  21/AP/3796 Submitted 2 Nov 2021 50 yards away

  Construction of single storey ground floor rear extension complete with two roof lights, single storey first floor side extension, porch construction, front door relocation and alterations to the fenestration of the property.

  Granted Householder Extension Loft or dormer +1 16 docs
  Small domestic

• 10 Strathnairn Street London Southwark SE1 5BL

  22/AP/3285 Submitted 15 Sep 2022 50 yards away

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

  Granted Householder Extension Loft or dormer 16 docs
  Domestic