21, Eaton Square, SW1W 9DE

21 Eaton Square is a 194 m² / 2,088 sq ft flat in Sloane Square. It sold for £2,313,721 in March 2021. Indexed forward to today's value, that sale is roughly £1,908k. Recent local prices imply a broad valuation context of £1,961k to £4,297k based on its internal area. The Land Registry and EPC data was last updated 1 June 2026.

Property data
Sale history
Date Paid price Annual growth After inflation
Mar 2021 £2,313,721 * -12.0% -13.2%
Oct 2013 £6,000,000 13.4% 10.3%
Apr 2010 £3,900,000 20.5% 18.1%
Dec 2000 New build New £675,000 na na

*This price paid record has been flagged by Land Registry as a 'Category B: Additional Price Paid entry'. This could be due to a variety of reasons, such as the sale being a buy-to-let purchase, a repossession or a transfer to a limited company. When Land Registry suspects that a sale does not reflect full market value (e.g. part-ownership or right to buy), these transactions can be flagged as well. For this reason, we exclude them from our area statistics.

Internal area
194 square metres (2,088 square feet) according to latest EPC inspection
Price per internal area

This property sold for £11,926 per square metre (£1,108 per square foot) in Mar 2021. Indexed forward to today's value, this is roughly £9,835 per square metre (£914 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Mar 2021 £2,313,721 £11,926 £1,907,993 £9,835
Oct 2013 £6,000,000 £30,928 £4,958,243 £25,558
Apr 2010 £3,900,000 £20,103 £4,527,989 £23,340
Dec 2000 £675,000 £3,479 £1,316,299 £6,785

Calculated using the latest EPC internal area of 194 m². Earlier sale dates may not have had the same measured area available.

Valuation
The most recent sale price indexed forward to today's value is £1,907,993. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Sloane Square are now selling for between £10,110 and £22,150 per square metre (£939 and £2,057 per square foot). Based on an internal area of 194 m², this implies a valuation between £1,961,000 and £4,297,000. Treat this as context only. For a valuation using hand-picked comparable sales, use the Advanced search tool — create a shortlist of similar condition homes, then export a valuation report.
Bedrooms
2
Type
Flat
Council tax band
na
Company ownership
Title number
NGL949185
Tenure
Leasehold/other
Title address
21 Eaton Square, London
Owner
CASANA UK PROPERTY LIMITED (Company reference number: 12998111)
Proprietor address: 37 Warren Street, London W1T 6AD, Ground Floor And Lower Ground Floor Flat, 21 Eaton Square, London SW1W 9DE
Price paid on title: £2,313,721
Ownership record added to Land Registry's corporate ownership dataset 16 Apr 2021
Title number
NGL949185
Tenure
Leasehold/other
Title address
21 Eaton Square, London
Owner
CASANA UK HOLDINGS LIMITED (Company reference number: 12998211)
Proprietor address: 37 Warren Street, London W1T 6AD, Ground Floor And Lower Ground Floor Flat, 21 Eaton Square, London SW1W 9DE
Price paid on title: £2,313,721
Ownership record added to Land Registry's corporate ownership dataset 16 Apr 2021
Title number
NGL976038
Tenure
Leasehold/other
Title address
Lower Ground Floor,21 Eaton Square, London
Owner
CASANA UK HOLDINGS LIMITED (Company reference number: 12998211)
Proprietor address: 37 Warren Street, London W1T 6AD, Ground Floor And Lower Ground Floor Flat, 21 Eaton Square, London SW1W 9DE
Price paid on title: £2,313,721
Ownership record added to Land Registry's corporate ownership dataset 16 Apr 2021
Title number
NGL976038
Tenure
Leasehold/other
Title address
Lower Ground Floor,21 Eaton Square, London
Owner
CASANA UK PROPERTY LIMITED (Company reference number: 12998111)
Proprietor address: 37 Warren Street, London W1T 6AD, Ground Floor And Lower Ground Floor Flat, 21 Eaton Square, London SW1W 9DE
Price paid on title: £2,313,721
Ownership record added to Land Registry's corporate ownership dataset 16 Apr 2021
Archived listings
History:
Archived sales listing for 21 Eaton Square. Advertised on multiple portals. It was reduced on 25/04/2013. It last appeared Jul 2013.
Photos:

There are 3 archived estate agent listing photos for 21 Eaton Square.

Photos for 21 Eaton Square
View photos
Advertiser remarks:
  • 3 bedrooms
Planning applications
Planning ref:
December 2019 19/02520/FULL
Type:
Full and householder planning application
Status:
Application refused
Address:
21 Eaton Square Londo
Description:
Installation of retractable awnings to the rear exterior of the ground floor terrace and lower ground floor dining room.
Planning ref:
December 2019 19/02521/LBC
Type:
Heritage application - conservation issues and listed buildings
Status:
Application refused
Address:
21 Eaton Square Londo
Description:
Installation of retractable awnings to the rear exterior of the ground floor terrace and lower ground floor dining room.
Planning ref:
September 2018 18/05037/LBC
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Relocation of comfort cooling air handling unit in lower ground floor dining room.
Planning ref:
September 2018 18/05274/FULL
Type:
Full and householder planning application
Status:
Application withdrawn before a decision was taken
Address:
21 Eaton Square Londo
Description:
Installation of a fully detachable and electrically retractable awnings on the rear exterior of the ground floor terrace and lower ground floor dining room.
Planning ref:
April 2018 18/01377/LBC
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Penetration in first floor balcony for proposed downpipe and gully connection into existing rainwater pipe.
Planning ref:
April 2018 18/01387/LBC
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Installation of new door to front vault.
Planning ref:
July 2017 17/05508/ADLBC
Type:
Discharge of conditions imposed on an existing application
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Details of new window pursuant to Condition 3 (partial) of listed building consent dated 27 May 2015 (RN: 16/02529/LBC).
Planning ref:
May 2016 16/02528/FULL
Type:
Full and householder planning application
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Erection of lower ground floor rear extension and new garden design.
Planning ref:
May 2016 16/02529/LBC
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Erection of lower ground floor rear extension and new garden design. Internal alterations at lower ground and ground floor levels.
Planning ref:
September 2015 15/08101/ADFULL
Type:
Discharge of conditions imposed on an existing application
Status:
Application approved
Address:
21 Eaton Square Londo
Description:
Details of new windows and doors pursuant to Condition 4 of planning permission dated 12 November 2014 (RN: 14/08046).
EPC Inspections
Summary:
05 March 2025 - energy performance certificate grade E
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Maisonette , has 6 habitable rooms. Estimated year built before 1900
Area:
196 sqm (2,110 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Boiler and radiators, electric.
Summary:
19 November 2012 - energy performance certificate grade E
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Maisonette , has 5 habitable rooms. Estimated year built None to None
Area:
194 sqm (2,088 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Boiler and radiators, electric.
Summary:
26 November 2009 - energy performance certificate grade D
Reason for EPC:
None
Tenure:
Owner-occupied
Property type:
None , has 4 habitable rooms. Estimated year built before 1900
Area:
182 sqm (1,959 square foot) total internal area
Comments:
Frequently asked questions

21 Eaton Square is worth whatever price a willing buyer and seller agree upon. However, the following can provide useful context.

  • HouseMetric estimates the most recent sale price indexed forward to today's value is £1,907,993.
  • Based on an internal area of 194 m² and recent prices in Sloane Square, this implies a lower and upper quartile range from £1,961,000 to £4,297,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 21 Eaton Square last sold for £2,313,721 in March 2021.

HouseMetric shows 21 Eaton Square as 194 m² (2,088 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 2 bedrooms. Bedroom numbers can come from a previous estate agency listing, an EPC record, or an estimate based on the size of the property.

The latest EPC rating shown by HouseMetric is E, from an inspection dated 05 March 2025. EPC information comes from the public Energy Performance Certificate data for England and Wales.

21 Eaton Square is in postcode SW1W 9DE, in Sloane Square. You can also view HouseMetric's sold-price page for Eaton Square, SW1W 9DE 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.