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Permitted20/06093/FULLSubmitted 5 years agoLoft conversion

Westminster

Erection of two 2 storey infill extensions to the set-back corners at fifth floor level on the Berkeley Street/Mayfair Place elevation and Berkeley Street/Stratton Street elevation, the demolition of the existing mansard roof and its replacement with a single sheer storey (to match the lower floors) on the Mayfair Place elevation and Stratton Street elevation, erection of an additional set back floor at eighth floor level, plus roof top plant room. Associated external alterations, including to existing ground floor entrances, and alterations to the existing plant/ducts. Use of basement (part), ground (part) and 1st to 8th floor as offices (Class E).

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Progress

Submitted
2 Oct 2020
— completed
Validated
2 Oct 2020
— completed
Consultation
2 Nov 2020
— completed
Target date
1 Jan 2021
— completed
Decided
1 Dec 2021
— completed

Application details

Reference
20/06093/FULL
Local authority
Westminster
Ward
WEC_02
Application type
All Other
Property type
Commercial

Key dates

Submitted
2 Oct 2020
Validated
2 Oct 2020
Comments close
2 Nov 2020
Target decision
1 Jan 2021
Decided
1 Dec 2021

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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