15, Onslow Square, SW7 3NJ

15 Onslow Square is a flat in South Kensington. It sold for £1,815,000 in December 2005. The Land Registry and EPC data was last updated 1 June 2026.

Property data
Sale history
£1,815,000 on Dec 2005 (est. today's value: £3,592,719)
Bedrooms
na
Type
Flat
Council tax band
na
Archived listings
History:
Archived rental listing for 15 Onslow Square. Advertised on multiple portals. It was . It last appeared Jan 2007.
Photos:

There are 1 archived estate agent listing photos for 15 Onslow Square.

Photos for 15 Onslow Square
View photos
Advertiser remarks:
  • 2 bedrooms
Planning applications
Planning ref:
June 2019 CON/19/03151
Type:
Discharge of conditions imposed on an existing application
Status:
Application approved with conditions
Address:
15 Onslow Square, LONDON,
Description:
Details required by condition 2 (Submission of details) of listed building consent 18/05909 (Internal alterations and alterations to the front facade)
Planning ref:
November 2018 LB/18/05909
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
15 Onslow Square, LONDON,
Description:
Internal alterations and alterations to the front facade.
Planning ref:
June 2017 LB/17/03025
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
15 Onslow Square, LONDON,
Description:
Alterations to basement fenestration from access doors to window; change of use from Sub-station (Sui generis) to habitable accommodation (C3), to be incorporated as part of flat. Internal alterations at basement level.
Planning ref:
June 2017 PP/17/03024
Type:
Full and householder planning application
Status:
Application approved
Address:
15 Onslow Square, LONDON,
Description:
Alterations to basement fenestration from access doors to window; change of use from Sub-station (Sui generis) to habitable accommodation (C3), to be incorporated as part of flat. Internal alterations at basement level.
Frequently asked questions

According to HM Land Registry price paid data, 15 Onslow Square last sold for £1,815,000 in December 2005.

15 Onslow Square is in postcode SW7 3NJ, in South Kensington. You can also view HouseMetric's sold-price page for Onslow Square, SW7 3NJ 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.