17, 21 South Audley Street Westminster W1K 2NY
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, creation of terraces at first floor level within a central greened courtyard, installation of plant and associated external alterations. Internal alterations throughout [Site includes 22 South Audley Street, 35 South Street and 35A South Street]
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Progress
Application details
- Reference
- 22/05005/LBC
- Local authority
- Westminster
- Postcode
- W1K 2NY
- Ward
- WEW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 30 Aug 2022
- Validated
- 30 Aug 2022
- Comments close
- 30 Sept 2022
- Target decision
- 25 Oct 2022
- Decided
- 14 Mar 2023
Estimated project value
£6470k–£9055k
Based on the 2,396m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, two-storey extension £2,000-£2,800/m².
Floor area gained: 2,396m²
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.
- 70 PARK STREET, LONDON, W1K 2JTTerraced · £4,000,0002 months ago19 Jun 2026
- APARTMENT 6, 17 THREE KINGS YARD, LONDON, W1K 4JTFlat or maisonette · Leasehold · £3,950,0003 months ago8 Jun 2026
- 5A MOUNT STREET, LONDON, W1K 3NEFlat or maisonette · Leasehold · £6,400,0003 months ago5 Jun 2026
- 9 SOUTH STREET, LONDON, W1K 2XAOther · Leasehold · Not a standard market sale · £12,000,0003 months ago20 May 2026
- 7 AVERY ROW, LONDON, W1K 4ALFlat or maisonette · Leasehold · Not a standard market sale · £710,0004 months ago7 May 2026
- 25 NORTH ROW, LONDON, W1K 6DJOther · Leasehold · Not a standard market sale · £2,750,0004 months ago28 Apr 2026
- FLAT 2, 68 SOUTH AUDLEY STREET, LONDON, W1K 2QYFlat or maisonette · Leasehold · £5,375,0004 months ago13 Apr 2026
- FLAT 18, 51 SOUTH STREET, LONDON, W1K 2XLFlat or maisonette · Leasehold · £8,600,0005 months ago30 Mar 2026
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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