Frognal House 99 Frognal London NW3 6XR

This site has had 15 applications since 2010: 13 approved, 0 refused.

• 2026/2108/P Granted

  Frognal House 99 Frognal London NW3 6XR

  Details for discharge of condition 6 (chartered engineer), 9 (Flood risk mitigation) and 10 (Rainwater recycling) from planning application 2024/0030/P dated 24/09/2025 for 'Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof. Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house.'

  Decided 17 Jul 2026 Full applications
• 2026/1547/P Granted

  Frognal House 99 Frognal London NW3 6XR

  Details for partial discharge of Part C of condition 20 (Air Quality Monitors) from planning application 2024/0030/P dated 24/09/2025 for 'Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof.Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house.'

  Decided 1 Jun 2026 Full applications
• 2026/1503/P Granted

  Frognal House 99 Frognal London NW3 6XR

  Non-material amendment to planning permission 2024/0030/P, granted subject to a legal agreement on 24/09/2025, for 'Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof. Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house' NAMELY to clarify/confirm tree retention details and update the associated tree protection area.

  Decided 16 Jun 2026 Amendments
• 2025/5742/P Granted

  Frognal House 99 Frognal London NW3 6XR

  Details for partial discharge of Parts A and B of condition 20 (Air Quality Monitors) from planning application 2024/0030/P dated 24/09/2025 for 'Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof. Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house'

  Decided 11 Feb 2026 Full applications
• 2025/2930/T Granted

  Frognal House 99 Frognal London NW3 6XR

  REAR GARDEN: 1 x Yew (T4) - Prune back branches that overhang the S boundary back to the boundary wall - 1m - 2m branch length removal. 1 x Horse Chestnut (T5) - Reduce crown to previous points of reduction, 1m - 2m branch length removal. 1 x Beech (T7) - Reduce crown by up to 3m on all aspects, pruning back to growth points.

  Decided 5 Aug 2025 Trees
• 2022/5443/T Granted

  Frognal House 99 Frognal London NW3 6XR

  SIDE COURTYARD GARDEN: 1 x Willow (T1) - Fell in sections to ground level.

  Decided 2 Feb 2023 Trees
• 2021/2208/L Granted

  Frognal House 99 Frognal London NW3 6XR

  Erection of a plaque commemorating the award of the Croix de la Liberation by General Charles de Gaulle to the head of the French resistance in 1943.

  Decided 21 Jul 2021 Heritage and listed buildings
• 2020/0574/T Granted

  Frognal House 99 Frognal London NW3 6XR

  FRONT SIDE GARDEN: 1 x Horse Chestnut (T1) - Crown reduce back to previous points.

  Decided 4 Mar 2020 Trees
• 2019/2102/P Granted

  Frognal House 99 Frognal London NW3 6XR

  Replacement of rear roof of lightwell at ground floor

  Decided 7 Aug 2019 Full applications
• 2019/2838/L Granted

  Frognal House 99 Frognal London NW3 6XR

  Replacement of rear roof of lightwell at ground floor

  Decided 7 Aug 2019 Heritage and listed buildings

1. 24 Apr 2026

   Received by Camden

2. 30 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 2 Jun 2026

   Decision issued: Granted

4. 24 Jul 2026

   Added to PlanIndex

• 2024/0030/P Awaiting decision

  Frognal House 99 Frognal London NW3 6XR

  Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof. Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house

  Full applications

Camden granted permission on 2 June 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.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Frognal House 99 Frognal London NW3 6XR

  2022/5443/T 0m away

  SIDE COURTYARD GARDEN: 1 x Willow (T1) - Fell in sections to ground level.

  Granted Trees

• 99 Frognal House Frognal London NW3 6XR

  2016/1237/T 0m away

  REAR GARDEN: 1 x London Plane T1 - reduce back to previous points 1 x Maple T2 - reduce back to previous points 1 x Horse Chestnut T4 - reduce back to previous points 1 x Conifer T5 - fell to ground level 1 x Alder T6 - reduce by 4 metres in height and 2 metres on lateral away from building 1 x London Plane T7 - reduce by 3 metres in height and 2 metres on laterals to take away from neighbouring building roof 1 x Silver Birch T8 - reduce by 3 metres in height 1 x Large conifer T9 - fell to ground level due to excessive shading and tree on lean Group small conifers/yew T10,11,13 &14 - fell to ground level 1 x Beech T12 - reduce by 4 meters in height and 2 meters on laterals 1 x Cherry T15 - fell due to wounded stem 1 x Cherry T18 - reduce laterals away from adjacent building SIDE GARDEN: 1 x Cherry T3 - reduce by 2 metres in height and cut away from building 1 x Large conifer T16 - remove due tree growing too large for its location - tree on a lean and producing excessive leaf litter on convent 1 x Holly T17 - remove due to proximity to building

  Granted Trees

• 99A Frognal London NW3 6XR

  2017/4825/P 0m away

  Details of tree report as required by condition 7 and details of green roof as required by condition 15 of planning permission 2013/7195/P dated 23/10/2014 for erection of a three-storey dwelling house (Class C3) with basement following demolition of existing dwelling

  Granted Full applications Demolition Trees
  Domestic

• 99A Frognal London NW3 6XR

  2017/5011/P 0m away

  Details of Sustainable Urban Drainage System as required by condition 11 of planning permission 2013/7195/P dated 23/10/2014 for the erection of a three storey dwelling house (Class C3) with basement following demolition of existing dwelling

  Granted Full applications Demolition
  Domestic

• Frognal House 99 Frognal London NW3 6XR

  2024/0030/P 0m away

  91% historically approved

  Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof. Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house

  Awaiting decision Full applications Extension Demolition

• Frognal House 99 Frognal London NW3 6XR

  2024/0176/L 0m away

  96% historically approved

  Change of use of convent (Sui Generis) to create four residential units (C3), demolition of existing extension and erection of a part one part two storey extension with green roof. Erection of roof extension with roof terrace and railings. Excavation of basement with entrance, conversion of garage, new bin and bike stores, hard and soft landscaping and alterations to fenestrations of the main house. Internal alterations to main house

  Awaiting decision Heritage and listed buildings Extension Demolition

• 2026/3898/P Awaiting decision

  98 Marchmont Street London WC1N 1AG

  Installation of a new kitchen extraction and ventilation system to the rear of the premises, including associated external ductwork, extraction plant and ancillary equipment.

  16 Sep 2026 Full applications
• 2026/2709/P Awaiting decision

  166A Camden Street London NW1 9PT

  Change of use from Use Class E to C3 Residential, demolition of existing store and office space, and erection of a three-bedroom dwellinghouse.

  16 Sep 2026 Full applications
• 2026/3994/P Awaiting decision

  Euston Tower 286 Euston Road London NW1 3DP

  Details to discharge Condition 23 (LUL Subculture) of planning reference 2023/5240/P dated 26/01/26 for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, caf?? and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

  15 Sep 2026 Full applications
• 2026/3993/P Awaiting decision

  Euston Tower 286 Euston Road London NW1 3DP

  Details to discharge Condition 22 (LUL Infrastructure) of planning reference 2023/5240/P dated 26/01/26 for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, caf?? and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

  15 Sep 2026 Full applications
• 2026/3861/P Awaiting decision

  Beaumont Court 1-45 College Grove London NW1 0RW

  Installation of condensors and minor alterations to elevations at lower floors.

  15 Sep 2026 Full applications