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Planning application

34 Belsize Lane London NW3 5AE

Awaiting decision Camden 2025/3022/L Heritage and listed buildings

Works: Extension Windows or glazing

Relates to 2024/1759/L

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Variation of condition 4 (like-for-like fabric) to Listed Building Consent dated 06.08.2024 (ref. 2024/1759/L for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works throughout, internal alterations including opening up the kitchen to living room, new bathrooms, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to the existing main roof, mechanical ventilation heat recovery and ASHP units) to add the words 'unless details are otherwise approved in writing by the Council'.

As published by the council, reference 2025/3022/L

Application record

Reference
2025/3022/L
Category
Heritage and listed buildings
Status
Registered
Postcode
NW3 5AE

Site history

Applications at this address on the Camden register

This site has had 16 applications since 2018: 12 approved, 0 refused.

  • 2025/5718/L Granted

    34 Belsize Lane London NW3 5AE

    Demolition of spiral staircase and roof access structure, extension of garage and erection of wall in the garage (part retrospective).

    Decided 25 Feb 2026 Heritage and listed buildings
  • 2025/5896/P Granted

    34 Belsize Lane London NW3 5AE

    Variation of condition 2 (approved drawings) of permission 2024/1219/P (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to main roof, mechanical ventilation heat recovery and ASHP units) chiefly to demolish the spiral staircase and roof access structure, extend the garage and erect a wall in the garage (part retrospective).

    Decided 25 Feb 2026 Amendments
  • 2025/0489/P Granted

    34 Belsize Lane London NW3 5AE

    Details submitted in relation to condition 6 (green/sedum roofs) and 10 (PV panels) of planning permission 2024/1219/P dated 06/08/2024 (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to main roof, mechanical ventilation heat recovery and ASHP units.)

    Decided 28 May 2025 Full applications
  • 2024/5771/L Withdrawn

    34 Belsize Lane London NW3 5AE

    Demolition of spiral staircase leading to the roof and erection of single-storey extension connecting the garage to the main house.

    Decided 30 Jan 2025 Heritage and listed buildings
  • 2024/5772/P Withdrawn

    34 Belsize Lane London NW3 5AE

    Variation of condition 2 (approved drawings) granted under reference 2024/1219/P dated 06/08/2024 for 'Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to main roof, mechanical ventilation heat recovery and ASHP units.' The variation would demolish the spiral staircase leading to the roof and erect an extension connecting the garage to the main house.

    Decided 30 Jan 2025 Full applications
  • 2024/5529/L Granted

    34 Belsize Lane London NW3 5AE

    Details submitted in relation to condition 4 (visible fixing manifestations) of approved application 2024/2957/L dated 11/09/2024 (for: Repair of eastern boundary wall).

    Decided 27 Jan 2025 Heritage and listed buildings
  • 2024/3606/P Granted

    34 Belsize Lane London NW3 5AE

    Details submitted in relation to condition 7 (timber joinery relocation) of approved application 2023/1749/L dated 06/08/2024 (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works throughout, internal alterations including opening up the kitchen to living room, new bathrooms, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to the existing main roof, mechanical ventilation heat recovery and ASHP units.)

    Decided 14 Nov 2024 Full applications
  • 2024/3502/L Granted

    34 Belsize Lane London NW3 5AE

    Details submitted in relation to condition 5 (Historic England Level 2 recording) of approved application 2024/1759/L dated 06/07/2024 (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works throughout, internal alterations including opening up the kitchen to living room, new bathrooms, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to the existing main roof, mechanical ventilation heat recovery and ASHP units.)

    Decided 23 Sep 2024 Heritage and listed buildings
  • 2024/1219/P Granted

    34 Belsize Lane London NW3 5AE

    Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to main roof, mechanical ventilation heat recovery and ASHP units.

    Decided 6 Aug 2024 Full applications
  • 2024/1759/L Granted

    34 Belsize Lane London NW3 5AE

    Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works throughout, internal alterations including opening up the kitchen to living room, new bathrooms, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to the existing main roof, mechanical ventilation heat recovery and ASHP units.

    Decided 6 Aug 2024 Heritage and listed buildings

Timeline

Dates from the published record

  1. 22 Jul 2026

    Added to PlanIndex

  2. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

    Camden took a median of 43 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 2024/1759/L Granted

    34 Belsize Lane London NW3 5AE

    Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works throughout, internal alterations including opening up the kitchen to living room, new bathrooms, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to the existing main roof, mechanical ventilation heat recovery and ASHP units.

    Decided 6 Aug 2024 Heritage and listed buildings

What happens while it is decided

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

About heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 34 Belsize Lane London NW3 5AE

    2025/5718/L Submitted 31 Dec 2025 50 yards away

    Demolition of spiral staircase and roof access structure, extension of garage and erection of wall in the garage (part retrospective).

    Granted Heritage and listed buildings Extension Demolition 31 docs

  • 34 Belsize Lane London NW3 5AE

    2025/2227/P 50 yards away

    92% historically approved

    Details submitted in relation to condition 5 (hard and soft landscaping) of planning permission 2024/1219/P dated 06/08/2024 (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to main roof, mechanical ventilation heat recovery and ASHP units.)

    Awaiting decision Full applications Extension Windows or glazing

  • 34 Belsize Lane London NW3 5AE

    2025/0489/P 50 yards away

    Details submitted in relation to condition 6 (green/sedum roofs) and 10 (PV panels) of planning permission 2024/1219/P dated 06/08/2024 (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to main roof, mechanical ventilation heat recovery and ASHP units.)

    Granted Full applications Extension Windows or glazing

  • 34 Belsize Lane London NW3 5AE

    2024/3606/P 50 yards away

    Details submitted in relation to condition 7 (timber joinery relocation) of approved application 2023/1749/L dated 06/08/2024 (for: Erection of a first-floor extension with green/sedum roof and photovoltaic panels, comprehensive structural and restoration works throughout, internal alterations including opening up the kitchen to living room, new bathrooms, new glazed window/doors to garden from southern studio, landscaping works, three areas of green roof to the existing main roof, mechanical ventilation heat recovery and ASHP units.)

    Granted Full applications Extension Windows or glazing

  • 34 Belsize Lane London NW3 5AE

    2020/1324/T 50 yards away

    REAR GARDEN: 1 x Bay (T1)- Crown thin 25-30%. 1 x Eucalyptus (T2) - Reduce height by 1m.

    Granted Trees

  • 34 Belsize Lane London NW3 5AE

    2024/5771/L 50 yards away

    Demolition of spiral staircase leading to the roof and erection of single-storey extension connecting the garage to the main house.

    Withdrawn Heritage and listed buildings Extension Demolition
    Small domestic

In Camden

  • 2026/1141/L Granted

    25 John Street London WC1N 2BS

    Internal and external alterations to partition layout at basement, supporting structures and external ground level, and alterations to design of conservatory, windows and doors granted under listed building consent 2024/0338/L dated 06/08/2024.

    Received 26 Mar, published by the council 24 Jul 2026 Heritage and listed buildings
  • 2025/1781/L Granted

    Frognal Rise House Lower Terrace London NW3 6RE

    Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, new basement floor below garden, alterations to main house including replacement windows including reinstated oriel window and new French doors to entrance elevation, new roofing to side wing, new portico and replacement door to front elevation, enlargement of existing lightwell, replacement gates and canopy over entrance gate, restorations of boundary treatments, associated internal alterations including partial underpinning works and other minor alterations.

    Received 22 Apr, published by the council 22 Jul 2026 Heritage and listed buildings
  • 2026/4129/L Awaiting decision

    6 Leverton Street London NW5 2PJ

    Strip out kitchen including floor tiles and replace; replace plumbing and flooring in rear ensuite; replace plumbing in front ensuite and WC; replace internal doors; replace garden wall with metal railing; replace 3 rear windows, 3 rear elevation side windows, 1 rear door and 1 rear elevation side door with double-glazed crittal windows and doors; remove 2 rear windows; render rear elevation brickwork; and associated works.

    Received 1 Oct, published by the council 9 Oct 2026 Heritage and listed buildings
  • 2026/1686/L Granted

    Flat Ground and 1st Floor and Flat 2nd and 3rd Floor 14 Downshire Hill London NW3 1NR

    External and internal alterations in connection with conversion of two self-contained flats into a single-family dwellinghouse, including new doors at rear ground and second floor level, replacement windows at rear second and third floors level, removal of internal partitions, extending the stair handrail, and replacement internal doors, parquet flooring, skirting, architraves, cornicing, and fittings.

    Received 19 May, published by the council 24 Jul 2026 Heritage and listed buildings
  • 2026/2202/L Refused

    4 Hampstead Square London NW3 1AB

    Erection of conservatory to front elevation.

    Received 27 May, published by the council 24 Jul 2026 Heritage and listed buildings