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Permitted09/06224/FULLRear extension

25 Catherine Street Westminster WC2B 5JS

Dual/alternative use of the first, second, third and fourth floors for either residential purposes (Class C3) (2x1 bed flat, 1x1 bed duplex flat and 1x2 bed duplex flat) and/or continued office use (Class B1). External alterations including the raising of the parapets to party walls, and relocation of the full height extract duct on the rear elevation and erection of an infill extension to the rear south side elevation at second to fourth floor level. Alterations to main roof to include installation of rooflights and guardrail.

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Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
21 Oct 2009
— completed

Application details

Reference
09/06224/FULL
Local authority
Westminster
Postcode
WC2B 5JS
Ward
ST. JAMES'S
Application type
All Other
Property type
Flat

Key dates

Decided
21 Oct 2009

Estimated project value

£41k–£75k

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: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Contains HM Land Registry data © Crown copyright and database right 2025. 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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