39, Onslow Square, SW7 3LR

39 Onslow Square is a 192 m² / 2,067 sq ft flat in South Kensington. It sold for £3,250,000 in November 2010. Indexed forward to today's value, that sale is roughly £3,668k. Recent local prices imply a broad valuation context of £2,598k to £3,838k 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
Nov 2010 £3,250,000 6.4% 3.8%
Dec 2004 £2,250,000 na na
Floor plan

Archived estate agent floor plan for 39, Onslow Square.

Floorplan 39
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Internal area
192 square metres (2,067 square feet) according to latest EPC inspection
Price per internal area

This property sold for £16,927 per square metre (£1,573 per square foot) in Nov 2010. Indexed forward to today's value, this is roughly £19,102 per square metre (£1,775 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Nov 2010 £3,250,000 £16,927 £3,667,601 £19,102
Dec 2004 £2,250,000 £11,719 £4,596,843 £23,942

Calculated using the latest EPC internal area of 192 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 £3,667,601. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in South Kensington are now selling for between £13,530 and £19,990 per square metre (£1,256 and £1,857 per square foot). Based on an internal area of 192 m², this implies a valuation between £2,598,000 and £3,838,000. 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
3
Type
Flat
Council tax band
na
Archived listings
History:
Archived sales listing for 39 Onslow Square. Advertised on multiple portals. It was . It last appeared Oct 2010.
Photos:

There are 7 archived estate agent listing photos for 39 Onslow Square.

Photos for 39 Onslow Square
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Advertiser remarks:
  • 3 bedrooms
EPC Inspections
Summary:
16 July 2009 - energy performance certificate grade E
Reason for EPC:
None
Tenure:
Owner-occupied
Property type:
None , has 5 habitable rooms. Estimated year built before 1900
Area:
192 sqm (2,067 square foot) total internal area
Comments:
Frequently asked questions

39 Onslow 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 £3,667,601.
  • Based on an internal area of 192 m² and recent prices in South Kensington, this implies a lower and upper quartile range from £2,598,000 to £3,838,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 39 Onslow Square last sold for £3,250,000 in November 2010.

HouseMetric shows 39 Onslow Square as 192 m² (2,067 sq ft), based on the latest internal area data available for this property. 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 E, from an inspection dated 16 July 2009. EPC information comes from the public Energy Performance Certificate data for England and Wales.

39 Onslow Square is in postcode SW7 3LR, in South Kensington. You can also view HouseMetric's sold-price page for Onslow Square, SW7 3LR or analysis of the South Kensington 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.