12 Belsize Road London NW6 4RD

1. 7 Apr 2025

   Decision issued: Granted

2. 22 Jul 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.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 12 Belsize Road London NW6 4RD

  2016/3518/P 0m away

  Erection of a part single part two storey side extension

  Granted Full applications Extension

• 12 Belsize Road London NW6 4RD

  2012/4349/P 0m away

  Erection of 3-storey side extension to existing dwellinghouse (Class C3).

  Withdrawn Full applications Extension
  Domestic

• 10 & 12 Belsize Road London NW6 4RD

  2018/5913/P 0m away

  Erection of a part single part two storey side extension to no.12 (to include removal of existing boundary wall)

  Granted Full applications Extension
  Small domestic

• 10 and 12 Belsize Road London NW6 4RD

  2020/4660/P 0m away

  Variation of condition 3 (approved plans) of planning permission 2018/5913/P dated 19/02/2019 (for the Erection of a part single part two storey side extension to No.12 (to include removal of existing boundary wall), namely, extension of the side extension; installation on new gate into the side passage with new external staircase; alterations to the fenestration treatment to the front and rear elevations including installation of sliding doors at ground floor level; replacement of existing window with door for recess balcony to the rear first floor; new timber framed window to the front first floor window.

  Granted Full applications Extension Windows or glazing
  Small domestic

• 14 Belsize Road London NW6 4RD

  2018/4327/P 4m away

  Erection of single storey rear extension to dwelling house following demolition of existing rear structure [subsequent to prior approval granted on 07/08/2018 under ref: 2018/3652/P]

  Granted Full applications Extension Demolition
  Small domestic

• 14 Belsize Road London NW6 4RD

  2018/3652/P 4m away

  Prior approval for the erection of a single storey rear extension to dwelling house (Depth: 4.5m; Maximum height: 3.2m; Eaves height: 3.0m) following demolition of existing rear structure

  Granted Full applications Extension Demolition
  Small domestic

• 2026/3635/P Awaiting decision

  9 Rosecroft Avenue London NW3 7QA

  Proposed remodelling of the rear elevation to include ground floor raised terrace, replacement balustrades, new stairs from first floor to garden level, new windows and insertion of 2no. rooflights to rear hipped roof and 1no. rooflights to existing rear flat roof.

  4 Sep 2026 Householder
• 2026/2824/P Granted

  5 Meadowbank London Camden NW3 3AY

  Erection of a front mansard roof extension; alterations to openings on front and rear elevations including new French windows and enlarged existing windows; garage to study conversion on ground floor.

  6 Jul 2026 Householder
• 2026/3775/P Awaiting decision

  8 Tasker Road London NW3 2YB

  Demolition of existing bin store and construction of a new part one/two storey front extension, addition of new fenestrations to the north, east and south elevations, replacement of existing windows and cladding and addition of new rooflights.

  2 Sep 2026 Householder
• 2026/3761/P Awaiting decision

  45 Ornan Road London NW3 4QD

  Erection of a first floor rear extension above existing ground floor rear extension.

  2 Sep 2026 Householder
• 2026/3606/P Awaiting decision

  29 Solent Road London NW6 1TP

  BOPS & M3 - 26-00348-HRET - Retrospective application for the installation of a bicycle storage unit to the front elevation

  2 Sep 2026 Householder