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Pending2026/4180/LSubmitted yesterdayLoft conversion

Frognal House 99 Frognal London NW3 6XR

Details for partial discharge of condition 5 (Structure report) of listed building consent 2024/0176/L 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'

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Progress

Submitted
30 Sept 2026
— completed
Validated
—
— not yet reached
Consultation
—
— not yet reached
Target date
—
— not yet reached
Decided
—
— not yet reached

Application details

Reference
2026/4180/L
Local authority
Camden
Ward
Frognal
Application type
Approval of Details (Listed Building)
Property type
House

Key dates

Submitted
30 Sept 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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