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Permitted2026/1503/PSubmitted 4 months agoLoft conversion

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.

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Progress

Submitted
22 Apr 2026
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
16 Jun 2026
— completed

Application details

Reference
2026/1503/P
Local authority
Camden
Ward
Frognal
Application type
Non Material Amendments
Property type
House

Key dates

Submitted
22 Apr 2026
Decided
16 Jun 2026

Estimated project value

£28k–£75k

Typical UK cost for this job type, at UK average rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.

Planning constraints

No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.

Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.

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