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Permitted23/05696/NMASubmitted 3 years agoTwo-storey extension

17, 21 South Audley Street Westminster W1K 2NY

Amendments to planning permission dated 14th March 2023 (RN:22/05004/FULL) for Alteration and extension of existing buildings including removal of one single storey extensions and one part single and part two storey extension, erection of infill extensions at first to third floor levels, a replacement part single storey and part three storey side extension adjoining Mount Street Garden and a replacement single store extension fronting onto South Street, use of part lower ground and part ground floor levels as an art gallery with ancillary storage and office accommodation (Class E), use of part basement/lower ground , part ground floor and first to fourth floor levels to aparthotel to provide 10 visitor accommodation units (Class C1) with ancillary facilities at ground and lower ground floor level, including communal lounge/library at ground floor level, use of ground to third floor of no.35A South Street, first and second floors of no.35 South Street and first to fourth floor of no. 17 South Audley Street as six residential units (Class C3), creation of terraces at first floor level within a central greened courtyard, installation of plant and associated external alterations. [Site includes 22 South Audley Street, 35 South Street and 35A South Street]. Namely,the revision to the wording of condition 32 (Breeam).

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Progress

Submitted
16 Aug 2023
— completed
Validated
16 Aug 2023
— completed
Consultation
—
— completed
Target date
13 Sept 2023
— completed
Decided
16 Oct 2023
— completed

Application details

Reference
23/05696/NMA
Local authority
Westminster
Postcode
W1K 2NY
Ward
WEW_22
Application type
All Other
Property type
Commercial

Key dates

Submitted
16 Aug 2023
Validated
16 Aug 2023
Target decision
13 Sept 2023
Decided
16 Oct 2023

Estimated project value

£75k–£175k

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: FMB / Checkatrade 2026, £2,000-£2,800/m² over a larger floor area.

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 £5,375,000 — the median of the last 5 market sales in W1K (the wider postcode district), £3,950,000 to £8,600,000.

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.

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