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Permitted21/03569/FULLSubmitted 5 years agoRear extension

5, 7 Carnaby Street Westminster W1F 9PB

Alterations and extensions to the existing building comprising a rear extension at the third floor level and front and rear extensions at the fourth floor level, the erection of a single storey extension to create a new fifth floor level for additional commercial floorspace, including the creation of new living walls on the front façade of the building and to the upper floor extensions, the creation of new terrace spaces, new fire escape staircase, a new rooftop plant enclosure, green roofs and PV Panels, and other associated works. (AMENDED PLANS)

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Progress

Submitted
28 May 2021
— completed
Validated
28 May 2021
— completed
Consultation
14 Dec 2021
— completed
Target date
23 Jul 2021
— completed
Decided
26 Jan 2022
— completed

Application details

Reference
21/03569/FULL
Local authority
Westminster
Postcode
W1F 9PB
Ward
WEA_02
Application type
All Other
Property type
Commercial

Key dates

Submitted
28 May 2021
Validated
28 May 2021
Comments close
14 Dec 2021
Target decision
23 Jul 2021
Decided
26 Jan 2022

Estimated project value

£660k–£1100k

Based on the 271m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².

Floor area gained: 271m²

Recently sold nearby

New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.

Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.

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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