Frognal House 99 Frognal London NW3 6XR Data via plota.co.uk
Proposal
Details for partial discharge of condition 4 (Materials) (Part B only) of listed building consent dated 24/09/2025 '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' Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. A decision is expected by 25 Nov 2026. Comments are open until 24 Oct 2026.
Comment on this application ↗Associated applications 3
Part of
Conditions details submitted for 4, 5
- ConditionsDetails for partial discharge of condition 4 (Materials) (Part B only)This application2026/4179/P
Show 1 more · 1 pending
Site constraints 6
Show all 17 with distances
- 8 mFrognal Grove Including Former Stable RangeGrade II*
- 16 mFront Garden Walls, Railings, Piers, Gate and Mounting Block to Numbers 105-111Grade II
- 29 mUpper Frognal LodgeGrade II
- 59 mSt Dorothys ConventGrade II
- 85 mGrove CottageGrade II
- 98 m108, FrognalGrade II
- 111 mNumbers 104 and 106 and Attached Wall, Railings and Gate to Number 106Grade II
- 113 mBay Tree CottageGrade II
- 117 mThree Bollards Opposite Number 1 (Number 1 Not Included)Grade II
- 121 mThe GardensGrade II
- 121 mFrognal RiseGrade II
- 129 mThe OaksGrade II
- 136 mMoreton HouseGrade II
- 140 mAbernethy HouseGrade II
- 145 mVolta House, Bolton House, Windmill Hill House and Enfield HouseGrade II
- 148 m3-6, Mount VernonGrade II
- 150 mMount Vernon HouseGrade II
Checked on 1 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Sales history 1
Last sold for £12,489,560 in December 2021. Other property, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
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Historical activity at this location
32 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Camden is slower than most councils at deciding householder applications, ranking #242 out of 296. Householder applications are slightly less likely to be approved here (88%) than the national average (90%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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Frognal House 99 Frognal London NW3 6XR
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Referenced application
Council archive
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. Internal alterations to main house
- Received
- 31 Jan 2024
- Decided
- 24 Sep 2025
- Outcome
- Approved
- Type
- Heritage