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Permitted10/06785/FULLLoft conversion

173 -175 Cleveland Street Westminster W1T 6QR

Mansard roof extension at fourth floor level including new roof terrace in association with the use of the first, second, third and fourth floor as three residential flats (2x2 and 1x3 beds). Creation of a roof terrace at rear first floor level.

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Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
29 Sept 2010
— completed

Application details

Reference
10/06785/FULL
Local authority
Westminster
Postcode
W1T 6QR
Ward
MARYLEBONE HIGH STREET
Application type
All Other
Property type
Flat

Key dates

Decided
29 Sept 2010

Estimated project value

£37k–£100k

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

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.

Homes here go for about £1,325,000 — the median of the last 4 market sales in W1T (the wider postcode district), £525,000 to £2,600,000.

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.

Nearby applications