Planning application
34 Belsize Lane London NW3 5AE
Works: Extension Demolition Windows or glazing
Relates to 2024/1219/P
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
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).
As published by the council, reference 2025/5896/P
Application record
- Reference
- 2025/5896/P
- Type
- Variation or Removal of Condition(s)
- Status
- Final Decision
- Decision
- Granted
- Received
- 31 Dec 2025
- Validated
- 9 Jan 2026
- Decided
- 25 Feb 2026
- Ward
- Belsize
- Decision by
- Delegated
- 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).
-
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.)
-
2024/5771/L Withdrawn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.
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2024/5772/P Withdrawn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.
-
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).
-
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.)
-
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.)
-
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.
-
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.
-
2021/3342/P Granted
34 Belsize Lane London NW3 5AE
Clerestory window and flat roof construction over existing mono-pitched roof light with new insulation to roof.
Timeline
Dates from the published record
-
31 Dec 2025
Received by Camden
-
9 Jan 2026
Validated
Checked as complete and ready for consideration.
-
25 Feb 2026
Decision issued: Granted
-
9 Aug 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
-
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.
Documents
Plans, drawings, consultee responses and the officer's report
30 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 documentsWhat this grant of permission means
Camden granted permission on 25 February 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 amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
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).
Granted Heritage and listed buildings Extension Demolition 31 docs -
34 Belsize Lane London NW3 5AE
REAR GARDEN: 2 x Bay - Crown reduce height by 2-3m, crown thin by 20%.
Granted Trees -
34 Belsize Lane London NW3 5AE
91% 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
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
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
REAR GARDEN: 1 x Bay (T1)- Crown thin 25-30%. 1 x Eucalyptus (T2) - Reduce height by 1m.
Granted Trees
Other amendment applications
In Camden
-
2026/3509/P Awaiting decision
Flat A 55 Leverton Street London NW5 2NX
Non-material amendment to planning permission 2026/0413/P dated 12/05/2026 (Erection of a single storey side and rear extension, re-construction of rear garden boundary wall, replacement of a ground floor rear window with an access door, replacement of a side door with a window, insertion of two rooflights and reinstatement of front sash windows), namely to reduce the depth of the side element of the approved extension.
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2026/2540/P Granted
50-51 Russell Square London WC1B 4JP
Non-material amendment to planning permission ref. 2023/5470/P (dated 13/03/2025) for: Deep refurbishment of existing building including new facades; erection of replacement roof extension with terrace to rear; reopening of lightwell to front and reconfiguration of entrance area; demolition of two storey outrigger and replacement with three storeys plus plant enclosure; single storey rear infill extension to existing car park with terrace above; erection of full height stair rear core extension. NAMELY for alterations to the front lightwell, ground floor entrances, fifth floor fenestration, plant enclosure, and rear terrace.
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2026/3341/P Granted
Flat A 71 Fitzjohn's Avenue London NW3 6PD
Non-material amendment to planning permission 2025/2351/P dated 30/07/2025 (Various external works including refurbishment and alterations to rear elevation fenestration and entrance door, replacement of existing single glazed windows with double glazed windows and alterations to side elevation fenestration, and re-landscaping works to rear garden), namely to alter the design of the rear doors and replace an existing timber louvre with brickwork to side elevation.
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2026/3097/P Awaiting decision
7 Belsize Park Gardens London NW3 4LB
Non-material amendment to planning permission ref. 2025/5424/P dated 06/05/2026 for 'front alterations including reduction of length of metal railings and widening of opening for access to bins, installation of tiling to new entrance steps, installation of door to storage area & handrail to Flat A, and alterations to side boundary doorway', namely, to change the material for the new entrance steps and front paving.
-
2026/2606/P Granted
Chester Road Hostel 2 Chester Road London N19 5BP
Non-material amendments to planning permission 2020/3461/P dated 11/05/2021 (for: Redevelopment of the site to include demolition of existing hostel building and the erection of a new hostel building (sui generis) formed of 3 x part 3, part 4 storey blocks with 2 x external stairwells arranged around a central courtyard. Associated works include installation of plant equipment, access arrangements and tree and landscaping works) NAMELY re-design and re-positioning of the boundary treatment near the site entrance and erection of retaining wall and balustrade in connection with revisions to ramp access to bin store