20 Eaton Square Westminster SW1W 9DD
Erection of rear extensions at lower ground and ground floor levels with terrace at rear ground floor to 20 Eaton Square; excavation under rear of main house and garden and excavation of new basement/sub-basement under 20 Eaton Mews South; changes to garden levels and garden boundary walls; alterations to roof and elevations of 20 Eaton Mews South; all in connection with amalgamation of maisonette at ground/lower ground floors of 20 Eaton Square with part of 20 Eaton Mews South.
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Progress
Application details
- Reference
- 11/00433/FULL
- Local authority
- Westminster
- Postcode
- SW1W 9DD
- Ward
- KNIGHTSBRIDGE AND BELGRAVIA
- Application type
- All Other
- Property type
- Flat
Key dates
- Decided
- 7 Oct 2011
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.
- FLAT F, 18 - 19 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · Not a standard market sale · £3,700,00017 months ago15 Apr 2025
- FLAT G, 18 - 19 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £1,000,0003 years ago14 Oct 2022
- FLAT H, 18 - 19 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £4,390,0004 years ago17 Dec 2021
- 16 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £1,170,0004 years ago10 Dec 2021
- FLAT K, 15 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £4,650,0004 years ago1 Oct 2021
- 17 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £1,500,0005 years ago19 Oct 2020
- FLAT 15P, 14 - 17 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £360,0006 years ago4 Aug 2020
- GROUND FLOOR AND BASEMENT FLAT, 17 EATON SQUARE, LONDON, SW1W 9DDFlat or maisonette · Leasehold · £800,0007 years ago10 Jan 2019
Homes here go for about £1,170,000 — the median of the last 7 market sales in SW1W 9DD, £360,000 to £4,650,000.
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.
Nearby applications
- 20 Eaton Square Westminster SW1W 9DDPermittedNext door
- 20 Eaton Square Westminster SW1W 9DDPermittedNext door
- 20 Eaton Square Westminster SW1W 9DDPendingNext door
- 21 Eaton Square Westminster SW1W 9DERefusedNext door
- 21 Eaton Square Westminster SW1W 9DERefusedNext door
- 18, 19 Eaton Square Westminster SW1W 9DDPermittedNext door