Property data
Sale history
£15,000,000 on Dec 2011 (est. today's value: £15,133,251)
Bedrooms
3
Type
Flat
Council tax band
H
EPC Inspections
Summary:
08 September 2022 - energy performance certificate grade B
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
3rd floor flat on the top floor in an apartment block with 1 storeys , has 6 habitable rooms. Estimated year built 1930 to 1949
Area:
386 sqm (4,155 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: Flat, insulated (assumed). Heating: Boiler and radiators, mains gas.

Summary:
24 August 2011 - energy performance certificate grade C
Reason for EPC:
None
Tenure:
Unknown
Property type:
None Estimated year built None to None
Area:
247 sqm (2,659 square foot) total internal area
Comments:
Frequently asked questions

According to HM Land Registry price paid data, Flat 12 20 Lowndes Square last sold for £15,000,000 in December 2011.

The bedroom count is shown as 3 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 B, from an inspection dated 08 September 2022. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, Flat 12 20 Lowndes Square was in council tax band H. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

Flat 12 20 Lowndes Square is in postcode SW1X 9HD, in Knightsbridge. You can also view HouseMetric's sold-price page for Lowndes Square, SW1X 9HD or analysis of the Knightsbridge 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.