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

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

• 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
• 2025/5123/P Granted

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

  Use of the 17 individual self-contained flats across the five floors as private residential units (Class C3).

  Decided 20 Jan 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. 5 Aug 2026

   Received by Camden

2. 9 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 30 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Camden took a median of 42 days over the applications it decided in the last year.

This application is with Camden for determination, against a statutory target of eight weeks. Over the last year Camden decided full applications in a median of 56 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. 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 0m 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 0m 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

  2025/5123/P Submitted 12 Nov 2025 0m away

  Use of the 17 individual self-contained flats across the five floors as private residential units (Class C3).

  Granted Lawful development New dwelling 16 docs

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

  2026/0261/P Submitted 22 Jan 2026 0m 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 2m 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 17m away

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

  Granted Trees

• 2026/2516/P Withdrawn

  31 Loveridge Road London Camden NW6 2DU

  Amalgamation of the existing three self-contained one-bedroom flats into a single-family dwelling house; demolition and replacement of existing outrigger; erection of a single-storey rear wrap-around extension; erection of a rear dormer extension; creation of a roof terrace above outrigger; replacement of existing windows with timber double glazed units; installation of rooflights to front roofslope; and installation of an air source heat pump in rear garden.

  16 Jun 2026 Full applications
• 2026/3830/P Awaiting decision

  Euston Tower 286 Euston Road London NW1 3DP

  Deed of variation to allow more flexibility with Affordable housing payments for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, café and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

  4 Sep 2026 Full applications
• 2026/3282/P Granted

  5 Berkley Road London NW1 8XX

  Installation of 1no. above ground gas riser from the basement flat to the meter box at first floor (retrospective)

  31 Jul 2026 Full applications
• 2026/0483/P Granted

  100 Avenue Road London NW3 3HF

  Discharge of details for condition 47 (surface water run off details) of planning permission 2026/0404/P granted on 19/06/2026 for " Variation of conditions (2 plan numbers); 8 (quantum of commercial space); 13 (commercial windows); 15 (Wind Microclimate); 19 (commercial windows); 24 (Air quality); 34 (development quantum); 40 (Circular Economy); 44 (designing out crime); 45 (Fire Strategy); 46 (SuDS); 48 (Community facility removed), 48 (wheelchair units), 49 (TfL health and safety) to planning permission ref. 2025/0852/P (for demolition of building and provision of a mixed-use residential-led development) to secure alterations to the external appearance; internal residential and commercial space layouts; omission of community floorspace and increased affordable housing provision; cycle and car parking; hard and soft landscaping, and other associated amendments”

  9 Feb 2026 Full applications
• 2026/2697/P Awaiting decision

  Flat 1, 73 Eton Avenue London NW3 3EU

  Replacement of existing defective rear lean-to conservatory with a new slimline powder-coated aluminium framed conservatory with clear double glazing, on the exact same footprint as existing.

  3 Sep 2026 Full applications