84 Eaton Square City Of Westminster SW1W 9AG
General reconfiguration of Flat B, including new fittings, fixtures, services, and finishes throughout; alterations to staircase landings with replacement balustrades and handrails; installation of new timber-framed slimline double-glazed sash windows in place of modern units; retention of historic window frames with replacement slimline double-glazing; minor internal layout adjustments, including relocation of the powder room and removal of the secondary lift; replacement of modern doors with raised-height openings; installation of new fireplaces in the Drawing Room and Principal Bedroom; introduction of underfloor heating throughout; together with associated internal and external works.
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Progress
Application details
- Reference
- 25/09171/LBC
- Local authority
- Westminster
- Postcode
- SW1W 9AG
- Ward
- KBW_22
- Application type
- All Other
- Property type
- Flat
Key dates
- Submitted
- 18 Dec 2025
- Validated
- 18 Dec 2025
- Comments close
- 24 Mar 2026
- Target decision
- 12 Feb 2026
- Decided
- 2 Apr 2026
Estimated project value
£5k–£16k
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 2026 double glazing guide, 3-bed semi full replacement.
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 3 recent sales are listed below.
- MAISONETTE B, 84 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · £6,795,00016 months ago9 May 2025
- MAISONETTE A, 84 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · £7,247,00016 months ago1 May 2025
- MAISONETTE C, 84 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · £11,875,00016 months ago1 May 2025
- FLAT C, 90 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · £800,0003 years ago6 Sept 2023
- FLAT G, 90 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · Not a standard market sale · £5,300,0003 years ago4 Sept 2023
- FLAT E, 90 EATON SQUARE, LONDON, SW1W 9AGOther · Leasehold · Not a standard market sale · £3,250,0004 years ago25 Apr 2022
- FLAT C, 86 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · £7,300,0005 years ago10 Nov 2020
- FLAT N, 90 EATON SQUARE, LONDON, SW1W 9AGFlat or maisonette · Leasehold · £24,500,0008 years ago31 Jan 2018
Homes here go for about £7,273,500 — the median of the last 6 market sales in SW1W 9AG, £800,000 to £24,500,000.
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.
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