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Planning application

39 Fitzjohn's Avenue London NW3 5JY

Granted Camden 2026/3417/P Certificate of Lawfulness (Existing)

Relates to 2020/2169/P

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

Proposal

Certificate of Lawfulness (Existing) to confirm that planning permission ref. 2020/2169/P (dated 16/11/2022) has been lawfully implemented by the carrying out of material operations prior to the expiry of the permission.

As published by the council, reference 2026/3417/P

Application record

Reference
2026/3417/P
Type
Certificate of Lawfulness (Existing)
Status
Final Decision
Decision
Granted
Received
10 Aug 2026
Validated
10 Aug 2026
Decided
18 Aug 2026
Ward
Belsize
Decision by
Delegated
Postcode
NW3 5JY

Site history

Applications at this address on the Camden register

This site has had 9 applications since 2022: 9 approved, 0 refused.

  • 2026/0907/T Granted

    39 Fitzjohn's Avenue London NW3 5JY

    REAR GARDEN: 1 x Poplar (T3) - Re-pollard back to previous points, (6m - 7m).

    Decided 7 Apr 2026 Trees
  • 2026/0622/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Details pursuant to Condition 7(b) (Air Quality Monitoring) of planning permission 2020/2169/P (dated 16/11/2022) for the 'Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed)'.

    Decided 25 Feb 2026 Full applications
  • 2026/0080/T Granted

    39 Fitzjohn's Avenue London NW3 5JY

    REAR GARDEN: 1 x Ash (T14) - Fell to ground level. 1 x Horse Chestnut (T15) - Fell to ground level. 1 x Sycamore (T26) - Crown reduce by 1.5m - 2m. 1 x Sycamore (T27) - Crown reduce by 1.5m - 2m. 1 x Sycamore (T28) - Crown reduce by 1.5m - 2m. 1 x Holly (T50) - Fell to ground level.

    Decided 6 Feb 2026 Trees
  • 2025/3327/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Details pursuant to Condition 11 (Rainwater Harvesting) of planning permission 2020/2169/P (dated 16/11/2022) for the 'Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed)'.

    Decided 27 Aug 2025 Full applications
  • 2025/2808/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Details pursuant to Condition 7(a) (Air Quality Monitoring) of planning permission 2020/2169/P (dated 16/11/2022), as amended by 2024/3325/P (dated 29/01/2025) for the 'Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed)'.

    Decided 13 Aug 2025 Full applications
  • 2025/2865/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Details pursuant to Condition 13 (Qualified Engineer Details) of planning permission 2020/2169/P (dated 16/11/2022), as amended by 2024/3325/P (dated 29/01/2025) for the 'Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed)'.

    Decided 3 Jul 2025 Full applications
  • 2024/3325/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Non-material amendment to planning permission 2020/2169/P dated 16/11/2022 for the 'Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed)', NAMELY for changes to the proposed landscape and access plans to align with neighbouring planning permission 2024/0728/P.

    Decided 29 Jan 2025 Full applications
  • 2020/2169/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed).

    Decided 16 Nov 2022 Full applications

Timeline

Dates from the published record

  1. 10 Aug 2026

    Received by Camden

  2. 15 Aug 2026

    Added to PlanIndex

  3. 18 Aug 2026

    Decision issued: Granted

Cases linked to this one on the register

  • 2020/2169/P Granted

    39 Fitzjohn's Avenue London NW3 5JY

    Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed).

    Decided 16 Nov 2022 Full applications

Documents

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

13 documents 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 18 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

  • 39a Fitzjohn's Avenue London NW3 5JT

    2020/2172/P 50 yards away

    Demolition of 3-storey link block and detachment with 39 Fitzjohn's Avenue and retention as a single family dwellinghouse , various minor external alterations and associated landscaping. Erection of timber refuse and cycle storage shed to rear.

    Granted Full applications Demolition
    Small domestic

  • 39 Fitzjohn's Avenue London NW3 5JU

    2013/4332/T 50 yards away

    REAR GARDEN: 1 x Indian Buckeye - Fell to ground level.

    Decided Trees

  • Southwell House 39 Fitzjohn's Avenue London NW3 5JT

    2011/0859/P 50 yards away

    Use of the building as a residential institutional use (Class C2).

    Granted Full applications

  • 39 Fitzjohn's Avenue London NW3 5JY

    2026/0907/T Submitted 9 Mar 2026 50 yards away

    REAR GARDEN: 1 x Poplar (T3) - Re-pollard back to previous points, (6m - 7m).

    Granted Trees 3 docs

  • 39 Fitzjohn's Avenue London NW3 5JY

    2024/3325/P 50 yards away

    Non-material amendment to planning permission 2020/2169/P dated 16/11/2022 for the 'Erection of replacement side, rear and roof extensions, excavation of basement and various other alterations associated with conversion of existing dwelling (Class C3) into 35 flats (2x studio, 9x1bed, 20x2bed and 4x3bed)', NAMELY for changes to the proposed landscape and access plans to align with neighbouring planning permission 2024/0728/P.

    Granted Full applications New dwelling Extension
    Major scheme

  • Southwell House 39 Fitzjohns Avenue London NW3 5JT

    2013/6067/T 50 yards away

    (TPO Ref: C1091) FRONTING NUTLEY TERRACE: 1 x Horse Chestnuts, 2 x Norway Maples - Fell.

    Refused Trees

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