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Planning application

Flat 1 and Flat 2 25 Belsize Park London NW3 4DU

Granted Camden 2026/2307/P Certificate of Lawfulness (Proposed)

Works: New dwelling

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

The amalgamation of Flats 1 and 2.

As published by the council, reference 2026/2307/P

Application record

Reference
2026/2307/P
Type
Certificate of Lawfulness (Proposed)
Status
Final Decision
Decision
Granted
Received
5 Jun 2026
Validated
10 Jun 2026
Decided
13 Aug 2026
Ward
Belsize
Decision by
Delegated
Postcode
NW3 4DU

Timeline

Dates from the published record

  1. 5 Jun 2026

    Received by Camden

  2. 10 Jun 2026

    Validated

    Checked as complete and ready for consideration.

  3. 24 Jul 2026

    Added to PlanIndex

  4. 13 Aug 2026

    Decision issued: Granted

Documents

Plans, drawings, consultee responses and the officer's report

1 document on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Camden granted permission on 13 August 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.

About lawful development applications

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.

Nearby applications

Within 0.3 miles

  • 25 Belsize Park London NW3 4DU

    2022/0086/T 50 yards away

    REAR GARDEN: 1 x Sycamore - Fell to ground level.

    Granted Trees
  • Flat 1 25 Belsize Park London NW3 4DU

    2024/4042/T 50 yards away

    FRONT GARDEN: 1 x Pine [T5] - Fell to ground level. 1 x Laburnum [T4] - Fell to ground level.

    Granted Trees
  • Flat 4 25 Ferncroft Avenue London NW3 7PG

    2019/5859/P 50 yards away

    Details of windows as required by condition 4(a) of planning permission dated 19/07/2019 ref. 2019/0847/P for Erection of rear extension at 2nd floor level, replacement glazed bay to roof terrace and installation of roof lights to rear.

    Granted Full applications Extension Loft or dormer +1
  • 24 Belsize Park London NW3 4DU

    2024/5077/T 50 yards away

    REAR GARDEN: 1 x Ash (T1) - Crown lift by no more than 2.5m. Height reduction of no more than 2.5m and no more than 2m symmetrical lateral reduction.

    Granted Trees
  • Flat 1-2 24 Belsize Park London NW3 4DU

    2014/4513/P 50 yards away

    Replacement of two side elevation windows at first and second floor with larger windows to existing flat (class C3).

    Granted Full applications Windows or glazing
  • FLAT 1-2 24 Belsize Park London NW3 4DU

    2015/0536/P 50 yards away

    Erection of a single storey timber clad outbuilding.

    Granted Full applications
    Small domestic

In Camden

  • 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