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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.

Trade members open them 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 500 metres

  • 39a Fitzjohn's Avenue London NW3 5JT

    2020/2172/P 0m 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 0m 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 0m 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 0m 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 0m 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 0m away

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

    Refused Trees

In Camden

  • 2026/3669/P Awaiting decision

    64 Westcroft Close London NW2 2RR

    Demolition of existing conservatory and erection of a single storey rear extension.

    26 Aug 2026 Lawful development
  • 2026/3405/P Granted

    Flat A and Flat B 23 Ravenshaw Street London NW6 1NP

    Amalgamation of Flat 23A and Flat 23B to form one dwellinghouse (Use Class C3), including, insofar as required, the change of use of Flat 23B from a small house in multiple occupation (Use Class C4) to a dwellinghouse (Use Class C3), together with removal of an internal blockwork partition wall.

    3 Aug 2026 Lawful development
  • 2026/3591/P Awaiting decision

    22 Ulysses Road London NW6 1EE

    Erection of an outbuilding within rear garden.

    21 Aug 2026 Lawful development
  • 2026/3566/P Awaiting decision

    41 & 43 King Henry's Road London NW3 3QR

    Subdivision and use of the buildings as two separate residential dwellings.

    19 Aug 2026 Lawful development
  • 2026/3527/P Awaiting decision

    303 Flat Ground Floor Rear Studio West End Lane London Camden NW6 1RD

    Use of ground floor studio flat as single dwelling unit (Class C3)

    18 Aug 2026 Lawful development