Spencer House 9 - 11 Belsize Park Gardens London NW3 4JR

This site has had 6 applications since 2019: 5 approved, 0 refused.

• 2026/3168/P Awaiting decision

  Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  Creation of balconies at first floor level above front entrance porticos, including the installation of metal railings and french doors.

  Submitted 5 Aug 2026 Full applications
• 2026/1263/P Granted

  Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  Extension to rear of property at lower ground floor level, including associated lowering of rear section of lower ground floor level, alterations to fenestration, formation of balconies at ground and first floor level to rear, and alterations to front lightwell.

  Decided 25 Jun 2026 Full applications
• 2026/1259/P Granted

  Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  Alterations and extensions to roof to form front, side and rear dormers, with front and rear balconies.

  Decided 14 Jul 2026 Full applications
• 2026/0261/P Granted

  Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  Internal works involving the reconfiguration of the existing 17 flats and the reduction to 16 x self-contained residential units (Class C3).

  Decided 17 Mar 2026 Lawful development
• 2019/2554/T Granted

  Spencer House 9 - 11 Belsize Park Gardens London NW3 4JR

  DD 5 Day Notice REAR GARDEN: 1 x Cherry - Fell to ground level and grinf stump.

  Decided 13 Jun 2019 Trees

1. 12 Nov 2025

   Received by Camden

2. 18 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 20 Jan 2026

   Decision issued: Granted

4. 9 Aug 2026

   Added to PlanIndex

Camden granted permission on 20 January 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.

• Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  2026/1263/P Submitted 30 Mar 2026 50 yards away

  Extension to rear of property at lower ground floor level, including associated lowering of rear section of lower ground floor level, alterations to fenestration, formation of balconies at ground and first floor level to rear, and alterations to front lightwell.

  Granted Full applications Extension Windows or glazing 68 docs

• Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  2026/1259/P Submitted 30 Mar 2026 50 yards away

  Alterations and extensions to roof to form front, side and rear dormers, with front and rear balconies.

  Granted Full applications Extension Loft or dormer 28 docs

• Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  2026/3168/P Submitted 5 Aug 2026 50 yards away

  92% historically approved · decision due ~30 Sep

  Creation of balconies at first floor level above front entrance porticos, including the installation of metal railings and french doors.

  Awaiting decision Full applications Windows or glazing 16 docs

• Spencer House 9-11 Belsize Park Gardens London NW3 4JR

  2026/0261/P Submitted 22 Jan 2026 50 yards away

  Internal works involving the reconfiguration of the existing 17 flats and the reduction to 16 x self-contained residential units (Class C3).

  Granted Lawful development New dwelling 16 docs
  Major scheme

• Spencer House 9 - 11 Belsize Park Gardens London NW3 4JR

  2019/2554/T Submitted 16 May 2019 50 yards away

  DD 5 Day Notice REAR GARDEN: 1 x Cherry - Fell to ground level and grinf stump.

  Granted Trees 3 docs

• Flat 2 13 Belsize Park Gardens London NW3 4JG

  2010/4155/T 50 yards away

  REAR GARDEN: 1 x Tilia SP (Lime) - Remove Ivy from tree, Crown reduce to previous reduction points 25-30%

  Granted Trees

• 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