Maisonette Ground and First Floor 39 Belsize Park Gardens London NW3 4JJ

1. 13 Nov 2025

   Received by Camden

2. 24 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 8 January 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.

• Maisonette Ground And 1st Floor 39 Belsize Park Gardens London NW3 4JJ

  2025/4876/P Submitted 29 Oct 2025 50 yards away

  Installation of metal railings to existing balconies over the entrance portico and rear ground floor bay window, and replacement of rear central lower windows with timber french doors with low level side windows.

  Granted Full applications Windows or glazing 10 docs

• 37 Belsize Park Gardens London NW3 4JJ

  2011/5510/T 50 yards away

  REAR GARDEN: 2 x Lime - Thin and reduce crown by 33%.

  Granted Trees

• Flat A 37 Belsize Park Gardens London NW3 4JJ

  2011/5524/P 50 yards away

  Alterations to fenestration at lower ground floor level including repositioning of side entrance door and replacement of timber framed windows with aluminium framed windows to side elevation and insertion of new door and replacement windows to lower ground floor rear elevation at residential flat (Class C3).

  Granted Full applications Windows or glazing

• Flat A 37 Belsize Park Gardens London NW3 4JJ

  2012/3390/P 50 yards away

  Erection of front boundary wall and bin store at ground level to residential dwellings (Class C3).

  Granted Full applications
  Small domestic

• Flat A 37 Belsize Park Gardens London NW3 4JJ

  2026/1387/T Submitted 9 Apr 2026 50 yards away

  REAR GARDEN: 1 x Lime (T1) - Lift crown up to height of approx. 6m from ground level. 1 x Lime (T2) - Lift crown up (remove trunk growth) to height of 6m from ground level.

  Granted Trees 4 docs

• Flat A 37 Belsize Park Gardens London NW3 4JJ

  2012/4723/P 50 yards away

  Erection of an additional step and levelling out of front path area to existing flats (retrospective application).

  Granted Full applications New dwelling

• 2026/0369/P Granted

  Railway embankment and land west of 49 Adelaide Road London NW3 3QB

  Installation of a new DNO (Distribution Network Operator) cabinet and erection secure access gate to Adelaide Road, erection of staircase to railway embankment, associated works.

  Received 17 Jul, published by the council 24 Jul 2026 Full applications
• 2026/3694/P Granted

  19 Charterhouse Street London EC1N 6RA

  Details pursuant to condition 19 (external lighting) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

  Received 27 Aug, published by the council 5 Sep 2026 Full applications
• 2026/3904/P Granted

  14 Templewood Avenue London NW3 7XA

  Details pursuant to Condition 5 (Tree protection measures) of planning permission 2026/2315/P dated 10/08/2026 for "Erection of an orangery/outbuilding in the rear garden."

  Received 9 Sep, published by the council 11 Sep 2026 Full applications
• 2025/2002/P Granted

  11 Doughty Street London WC1N 2PL

  Change of use from office (Class E) to residential to form a single-family dwelling (Class C3); associated internal and external alterations

  Received 9 May, published by the council 22 Jul 2026 Full applications
• 2026/3551/P Granted

  19 Charterhouse Street London EC1N 6RA

  Details pursuant to condition 21 (Details of gates/barriers onto Charterhouse Street) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

  Received 19 Aug, published by the council 22 Aug 2026 Full applications