20, Eaton Square, SW1W 9DD
20 Eaton Square is a flat in Sloane Square. It sold for £20,650,000 in October 2017. The Land Registry and EPC data was last updated 1 June 2026.
Property data
- Sale history
-
Date Paid price Annual growth After inflation Oct 2017 £20,650,000 1843.8% 1795.9% Sep 2016 £725,000 na na - Floor plan
-
Archived estate agent floor plan for 20, Eaton Square.
- Bedrooms
- na
- Type
- Flat
- Council tax band
- na
Archived listings
Planning applications
- Planning ref:
- August 2015 15/05464/LBC
- Type:
- Heritage application - conservation issues and listed buildings
- Status:
- Application approved
- Address:
- 20 Eaton Square Londo
- Description:
- Raising the height of the balustrade to the rear first floor terrace and lowering the parapet to the rear first floor terrace. Internal alterations to partitions at ground floor level.
- Planning ref:
- August 2015 15/05889/NMA
- Type:
- Amendments or alterations arising from an existing or previous application
- Status:
- Application approved
- Address:
- 20 Eaton Square Londo
- Description:
- Amendments to planning permission dated 30 January 2015 (RN: 14/11434/FULL) for extension at ground and lower ground floors to rear of No. 19 with extension of terrace above at first floor level, extension at lower ground to the rear of No. 20 and at lower ground and ground floors to the closet wing of No. 20 and alterations to windows and doors, all in connection with the amalgamation of two flats to create a family sized dwelling; Namely, balustrade to the rear first floor terrace increased in height and rear first floor terrace parapet to be lowered.
- Planning ref:
- April 2015 15/02231/ADFULL
- Type:
- Discharge of conditions imposed on an existing application
- Status:
- Application approved
- Address:
- 20 Eaton Square Londo
- Description:
- Sample of glass within the entrance door pursuant to Condition 8 of planning permission dated 12 February 2015 (RN: 14/11434).
- Planning ref:
- April 2015 15/02313/ADLBC
- Type:
- Discharge of conditions imposed on an existing application
- Status:
- Application approved
- Address:
- 20 Eaton Square Londo
- Description:
- Sample of glass within the entrance door pursuant to Condition 8 of listed building consent dated 12 February 2015 (RN: 14/11435).
- Planning ref:
- February 2015 14/11435/LBC
- Type:
- Heritage application - conservation issues and listed buildings
- Status:
- Application approved
- Address:
- 20 Eaton Square Londo
- Description:
- Extension at ground and lower ground floors to rear of No. 19 with extension of terrace above at first floor level, extension at lower ground to the rear of No. 20 and at lower ground and ground floors to the closet wing of No. 20, alterations to windows and doors, internal alterations including the removal of partitions, all in connection with the amalgamation of two flats to create a family sized dwelling.
- Planning ref:
- January 2015 14/11434/FULL
- Type:
- Full and householder planning application
- Status:
- Application approved
- Address:
- 20 Eaton Square Londo
- Description:
- Extension at ground and lower ground floors to rear of No. 19 with extension of terrace above at first floor level, extension at lower ground to the rear of No. 20 and at lower ground and ground floors to the closet wing of No. 20 and alterations to windows and doors, all in connection with the amalgamation of two flats to create a family sized dwelling.
- Planning ref:
- January 2015 14/11402/ADFULL
- Type:
- Discharge of conditions imposed on an existing application
- Status:
- Application withdrawn before a decision was taken
- Address:
- 20 Eaton Square Londo
- Description:
- Details of windows, doors, railings (including railings to rear first floor of No. 19), roof level works and windows to be single glazed pursuant to Conditions 5 and 7 of planning permission dated 6 November 2014 (RN: 14/06954).
- Planning ref:
- August 2014 14/04954/FULL
- Type:
- Full and householder planning application
- Status:
- Application refused
- Address:
- 20 Eaton Square Londo
- Description:
- Construction of extensions at ground and lower ground floors to rear of No.19, at lower ground to the original rear of No.20 and at lower ground and ground to the closet wing of No.20, installation of railings in connection with a new roof terrace at rear ground floor level, alterations to windows and doors including the installation of double glazing at lower ground and ground floor levels.
- Planning ref:
- August 2014 14/04955/LBC
- Type:
- Heritage application - conservation issues and listed buildings
- Status:
- Application refused
- Address:
- 20 Eaton Square Londo
- Description:
- Construction of extensions at ground and lower ground floors to rear of No.19, at lower ground to the original rear of No.20 and at lower ground and ground to the closet wing of No.20, installation of railings in connection with a new roof terrace at rear ground floor level, alterations to windows and doors including the installation of double glazing at lower ground and ground floor levels, internal alterations including the removal of partitions.
- Planning ref:
- August 2014 14/05106/FULL
- Type:
- Full and householder planning application
- Status:
- Application refused
- Address:
- 20 Eaton Square Londo
- Description:
- Construction of extensions at ground and lower ground floors to rear of No.19, at lower ground and ground floors to the rear of No.20 and at lower ground and ground floors to the closet wing of No.20, installation of railings in connection with a new roof terrace at rear ground floor level, alterations to windows and doors including the installation of double glazing at lower ground and ground floor levels.
EPC Inspections
- Summary:
- 10 April 2026 - energy performance certificate grade D
- Certificate:
- View energy certificate on GOV.UK
- Reason for EPC:
- marketed sale
- Tenure:
- Owner-occupied
- Property type:
- Maisonette , has 10 habitable rooms. Estimated year built before 1900
- Area:
- 459 sqm (4,941 square foot) total internal area
- Comments:
- Walls: Solid brick, as built, partial insulation (assumed). Roof: (another dwelling above). Heating: Boiler and underfloor, mains gas.
- Summary:
- 17 November 2011 - energy performance certificate grade D
- Reason for EPC:
- None
- Tenure:
- Owner-occupied
- Property type:
- None , has 5 habitable rooms. Estimated year built before 1900
- Area:
- 193 sqm (2,077 square foot) total internal area
- Comments:
Frequently asked questions
According to HM Land Registry price paid data, 20 Eaton Square last sold for
£20,650,000 in
October 2017.
The latest EPC rating shown by HouseMetric is D, from an inspection dated 10 April 2026.
EPC information comes from the public Energy Performance Certificate data for England and Wales.
20 Eaton Square is in postcode SW1W 9DD, in Sloane Square.
You can also view HouseMetric's sold-price page for
Eaton Square, SW1W 9DD
or
analysis of the Sloane Square property market.
HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data.
The data were last updated 1 June 2026. Figures such as indexed values and local valuation ranges are calculated estimates for context, while official records can change as public datasets are updated.
For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.