40 Leighton Grove London NW5 2QP

1. 1 Sep 2026

   Received by Camden

2. 9 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Sep 2026

   Added to PlanIndex

4. 23 Sep 2026

   Decision issued: Granted

Camden granted permission on 23 September 2026, 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.

• 39A Leighton Grove London NW5 2QP

  2015/4466/P 50 yards away

  Replacement of existing timber door and windows with timber casement and hardwood sash windows and traditional composite door on front and rear elevations.

  Granted Full applications Windows or glazing

• 2nd Floor Flat 38 Leighton Grove London NW5 2QP

  2026/2696/P Submitted 3 Jul 2026 50 yards away

  Erection of mansard style roof extension with front and rear dormers and rear roof terrace

  Refused Full applications Extension Loft or dormer 9 docs

• 38 Leighton Grove London NW5 2QP

  2016/1523/P 50 yards away

  Erection of a mansard roof extension and conversion of 1st/2nd floor maisonette to 1 x 1 bedroom flat and 1 x 2 bedroom maisonette.

  Refused Full applications Extension Loft or dormer

• Flat 1st and 2nd Floor 38 Leighton Grove London NW5 2QP

  2016/3070/P 50 yards away

  Conversion of 2 bedroom maisonette into 1 x 1 bed flat and 1 x studio flat; and redesign of the front garden to provide cycle and refuse storage.

  Granted Full applications

• 38 Leighton Grove London NW5 2QP

  2015/6936/P 50 yards away

  Erection of single storey rear extension.

  Granted Full applications Extension
  Small domestic

• Flat A 38 Leighton Grove London NW5 2QP

  2016/4308/P 50 yards away

  Variation of condition 3 (approved plans) of planning permission 2015/6936/P dated 03/02/2016 (for the erection of single storey rear extension), namely to change the sloped element of the proposed roof to a flat roofed section.

  Granted Full applications Extension
  Small domestic

• 2026/4314/P Awaiting decision

  Basement Flat & Flat Raised Ground Floor 46 Primrose Hill Road London NW3 3AA

  Amalgamation of two self-contained flats to form a self-contained maisonette on lower ground and raised ground floor.

  Received 6 Oct, published by the council 9 Oct 2026 Lawful development
• 2026/4304/P Awaiting decision

  68 Clarence Way London NW1 8DG

  Erection of single storey outbuilding in rear garden.

  Received 2 Oct, published by the council 9 Oct 2026 Lawful development
• 2026/3821/P Granted

  Plots B, C and D at Highgate Studios Highgate Road London NW5 1TL

  Certificate of Lawful Development to confirm the lawful use of the site is for office use (Class E(g)(i)) and that the use of the site as a gym (Class E(d)) or any other use falling within Class E would be lawful.

  Received 4 Sep, published by the council 11 Sep 2026 Lawful development
• 2026/3389/P Granted

  99 Heath Street London NW3 6SS

  Confirmation of the implementation of planning permission 2007/3874/P granted, subject to a legal agreement dated 06/12/2007 for 'Change of use from offices (A2) to single family dwellinghouse (C3), the erection of extension at rear ground floor level within courtyard and formation of a terrace over, extension at ground floor level to western end of courtyard, creation of off-street open car parking space and minor elevational changes to The Mount elevation.', by way of erection of the extension at ground floor level to the western end of the courtyard, creation of an off-street car parking space, and minor elevational changes to the Mount elevation.

  Received 7 Aug, published by the council 15 Aug 2026 Lawful development
• 2026/2493/P Granted

  8 Fitzroy Road London Camden NW1 8TX

  Use of the entire building for a single-family home (C3 residential).

  Received 16 Jun, published by the council 24 Jul 2026 Lawful development