Property data
Sale history
Date Paid price Annual growth After inflation
Apr 2014 £1,765,000 21.6% 19.1%
Apr 1997 £63,000 na na
Internal area
70 square metres (753 square feet) according to latest EPC inspection
Price per internal area

This property sold for £25,214 per square metre (£2,342 per square foot) in Apr 2014. Indexed forward to today's value, this is roughly £19,301 per square metre (£1,793 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Apr 2014 £1,765,000 £25,214 £1,351,048 £19,301
Apr 1997 £63,000 £900 £343,849 £4,912

Calculated using the latest EPC internal area of 70 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 £1,351,048. 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 70 m², this implies a valuation between £947,000 and £1,399,000. 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
G
Archived listings
History:
Archived sales listing for Flat 1 105 Onslow Square. Advertised on multiple portals. It was . It last appeared Jan 2015.
Photos:

There are 5 archived estate agent listing photos (taken in March 2014) for Flat 1 105 Onslow Square.

Photos for 105 Onslow Square
View photos
Advertiser remarks:
  • 1 bedrooms
Planning applications
Planning ref:
August 2015 LB/15/03844
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
Flat 1, 105 Onslow Square, LONDON,
Description:
Internal alteration and refurbishment works to raised ground floor flat 1.
EPC Inspections
Summary:
23 June 2023 - energy performance certificate grade C
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
1st floor flat in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built 1900 to 1929
Area:
60 sqm (646 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Community scheme.

Summary:
03 July 2013 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Private rental
Property type:
1st floor flat in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built before 1900
Area:
70 sqm (753 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Community scheme.
Frequently asked questions

Flat 1 105 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 £1,351,048.
  • Based on an internal area of 70 m² and recent prices in South Kensington, this implies a lower and upper quartile range from £947,000 to £1,399,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, Flat 1 105 Onslow Square last sold for £1,765,000 in April 2014.

HouseMetric shows Flat 1 105 Onslow Square as 70 m² (753 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 C, from an inspection dated 23 June 2023. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, Flat 1 105 Onslow Square was in council tax band G. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

Flat 1 105 Onslow Square is in postcode SW7 3LU, in South Kensington. You can also view HouseMetric's sold-price page for Onslow Square, SW7 3LU 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.