Flat 7, 6, Onslow Square has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 12 Nov 2012.

The property is connected to mains gas and has single glazed windows. It is heated using community scheme.

Flat 7, 6, Onslow Square last changed hands on 30th June 2021, selling for £1,800,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has dropped by 16.9% since June 2021.

• Sold Jun 2021£1,800,000
• Sold May 2006£635,000

Land Registry records and our Estate Agent network show 23 sales of comparable properties within 280 metres of Flat 7, 6, Onslow Square since 2008.

Most recently, 36, Sydney Street, London, SW3 6PP, a leasehold flat, sold at £1,470,000 on the 2nd June 2026.

Read more about house prices in SW7.

• Sold Jun 2026£1,470,000 | 3 Bed Flat36, Sydney Street, London, SW3 6PP36, Sydney Street, London, SW3 6PP
• Sold Oct 2025£1,500,000 | 3 Bed Flat13, Sydney Mews, London, SW3 6HL13, Sydney Mews, London, SW3 6HL
• Sold Jun 2025£1,200,000 | 3 Bed FlatFlat 34, Malvern Court, Onslow Square, London, SW7 3HYFlat 34, Malvern Court, Onslow Square, London, SW7 3HY
• Sold Mar 2025£1,300,000 | 3 Bed FlatFlat 18, Melton Court, Onslow Crescent, London, SW7 3JQFlat 18, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Jul 2022£2,100,000 | 3 Bed FlatFlat 73, Melton Court, Onslow Crescent, London, SW7 3JHFlat 73, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Feb 2022£1,605,000 | 3 Bed FlatFlat 1, 12, Sumner Place, London, SW7 3EEFlat 1, 12, Sumner Place, London, SW7 3EE
• Sold Oct 2021£430,000 | 3 Bed FlatFlat 6, 27, Onslow Square, London, SW7 3NHFlat 6, 27, Onslow Square, London, SW7 3NH
• Sold Jun 2021£2,500,000 | 3 Bed FlatFlat 42, Melton Court, Onslow Crescent, London, SW7 3JHFlat 42, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Jan 2021£2,450,000 | 3 Bed FlatFlat 4, 89, Onslow Square, London, SW7 3LTFlat 4, 89, Onslow Square, London, SW7 3LT
• Sold Dec 2019£1,850,000 | 3 Bed FlatFlat 3, Avenue Studios, Sydney Close, London, SW3 6HWFlat 3, Avenue Studios, Sydney Close, London, SW3 6HW
• Sold Aug 2019£1,550,000 | 3 Bed FlatFlat 9, 97, Onslow Square, London, SW7 3LUFlat 9, 97, Onslow Square, London, SW7 3LU
• Sold Jan 2017£1,300,000 | 3 Bed Flat97A, Onslow Square, London, SW7 3LU97A, Onslow Square, London, SW7 3LU
• Sold Feb 2016£2,400,000 | 3 Bed FlatFlat 50, Melton Court, Onslow Crescent, London, SW7 3JHFlat 50, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Aug 2015£1,550,000 | 3 Bed FlatFlat 7A, Avenue Studios, Sydney Close, London, SW3 6HWFlat 7A, Avenue Studios, Sydney Close, London, SW3 6HW
• Sold May 2015£1,750,000 | 3 Bed FlatFlat 6, Thurloe Court, Fulham Road, London, SW3 6SBFlat 6, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Mar 2015£2,000,000 | 3 Bed FlatFlat 2, Malvern Court, Onslow Square, London, SW7 3HUFlat 2, Malvern Court, Onslow Square, London, SW7 3HU
• Sold Dec 2013£2,800,000 | 3 Bed FlatFlat 5, 97, Onslow Square, London, SW7 3LUFlat 5, 97, Onslow Square, London, SW7 3LU
• Sold Oct 2013£1,700,000 | 3 Bed FlatFlat 18, 27, Onslow Square, London, SW7 3NHFlat 18, 27, Onslow Square, London, SW7 3NH
• Sold Oct 2012£1,700,000 | 3 Bed FlatFlat 77, Melton Court, Onslow Crescent, London, SW7 3JHFlat 77, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold May 2008£1,350,000 | 3 Bed FlatFlat 4, Melton Court, Onslow Crescent, London, SW7 3JQFlat 4, Melton Court, Onslow Crescent, London, SW7 3JQ

Our analysis of the public data ranks Flat 7, 6, Onslow Square as the 204th largest and the 205th most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £386k less expensive than the typical property.

• Oratory Roman Catholic Primary School

  300 m away
• Our Lady of Victories RC Primary School

  500 m away
• Marlborough Primary School

  500 m away

• St. Thomas More Language College

  700 m away
• Chelsea Academy

  1.7 km away
• The London Oratory School

  1.8 km away

• South Kensington

  |

  200 m away
• Gloucester Road

  |

  700 m away
• Knightsbridge

  |

  1.1 km away

Environment Agency data suggests this area has a Very Low risk of flooding.