21 Gascony Avenue London Camden NW6 4NB

This site has had 3 applications since 2025: 2 approved, 0 refused.

• 2025/5687/P Granted

  21 Gascony Avenue London Camden NW6 4NB

  Erection of a single story rear/side extension with new windows and rooflights and removal of a side window on the first floor and installation of a new metal balustrade to existing rear terrace.

  Decided 27 Jan 2026 Householder
• 2025/3416/P Awaiting decision

  21 Gascony Avenue London Camden NW6 4NB

  Erection of a single storey rear/side infill extension and removal of a side window on the first floor.

  Full applications

1. 24 Feb 2026

   Received by Camden

2. 25 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 17 Mar 2026

   Decision issued: Granted

4. 9 Aug 2026

   Added to PlanIndex

Camden granted permission on 17 March 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.

• 21 Gascony Avenue London NW6 4NB

  2019/4264/P 50 yards away

  Amalgamation of two flats into single dwelling house (Class C3)

  Granted Full applications New dwelling
  Several homes

• Flat C 23 Gascony Avenue London NW6 4NB

  2018/0181/P Submitted 15 Jan 2018 50 yards away

  Erection of rear dormer window, replacement of second floor window with juliet balcony to rear elevation and installation of 2 no. rooflights to flat

  Granted Full applications Loft or dormer Windows or glazing 4 docs

• Former Flat 2nd and 3rd Floor 25 Gascony Avenue London NW6 4NB

  2017/0366/P 50 yards away

  Enlargement of rear extension at second floor level to incorporate part of existing roof terrace, new enlarged dormer extension to the rear roof slope to provide ancillary residential floorspace for the existing maisonette on the second and third floors (Class C3).

  Granted Full applications Extension Loft or dormer

• 15 Gascony Avenue London Camden NW6 4NB

  2024/2126/P 50 yards away

  Replacement of all existing windows and rear doors and replacement with new timber double glazed windows and timber double glazed doors.

  Granted Full applications Windows or glazing

• Flat 2nd And 3rd Floor 27 Gascony Avenue London Camden NW6 4NB

  2024/1637/P Submitted 25 Apr 2024 50 yards away

  Erection of single-storey rear extension at second floor level; installation of dormers to front and rear roof slopes

  Granted Full applications Extension Loft or dormer 13 docs
  Small domestic

• Flat 2nd and 3rd Floor 27 Gascony Avenue London NW6 4NB

  2023/2368/P Submitted 8 Jun 2023 50 yards away

  Erection of single storey rear extension at second floor level with access to existing roof terrace; enlargement of rear dormer.

  Granted Full applications Extension Loft or dormer 15 docs
  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