Flat 10, 27, Onslow Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 30 Jun 2017.

The property is not connected to mains gas and has fully double glazed windows. It is heated using community scheme.

Flat 10, 27, Onslow Square last changed hands on 15th September 2017, selling for £1,700,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold 5 times since 1995.

The market for similar properties has dropped by 16.7% since September 2017.

• Sold Sep 2017£1,700,000
• Sold Jan 2007£550,000
• Sold Oct 2004£445,000

Land Registry records and our Estate Agent network show 54 sales of comparable properties within 290 metres of Flat 10, 27, Onslow Square since 2012.

Most recently, Flat 29, Thurloe Court, Fulham Road, London, SW3 6SB, a leasehold flat, sold at £1,575,000 on the 19th June 2025.

Read more about house prices in SW7.

• Sold Jun 2025£1,575,000 | 3 Bed FlatFlat 29, Thurloe Court, Fulham Road, London, SW3 6SBFlat 29, Thurloe Court, Fulham Road, London, SW3 6SB
• 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 Apr 2024£1,400,000 | 2 Bed FlatFlat 12, 27, Onslow Square, London, SW7 3NHFlat 12, 27, Onslow Square, London, SW7 3NH
• Sold Feb 2024£1,493,500 | 2 Bed FlatFlat 14, 27, Onslow Square, London, SW7 3NHFlat 14, 27, Onslow Square, London, SW7 3NH
• Sold Jan 2024£1,530,000 | 3 Bed FlatFlat 21, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 21, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Oct 2023£1,200,000 | 2 Bed FlatFlat 28, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 28, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Jul 2023£1,600,000 | 2 Bed FlatFlat 11, 25, Onslow Square, London, SW7 3NJFlat 11, 25, Onslow Square, London, SW7 3NJ
• Sold Sep 2022£1,795,000 | 3 Bed FlatFlat 37, Thurloe Court, Fulham Road, London, SW3 6SBFlat 37, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Aug 2022£2,000,000 | 2 Bed FlatFlat 11, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 11, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Mar 2022£1,560,000 | 3 Bed FlatFlat 9, Thurloe Court, Fulham Road, London, SW3 6SBFlat 9, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Oct 2021£430,000 | 3 Bed FlatFlat 6, 27, Onslow Square, London, SW7 3NHFlat 6, 27, Onslow Square, London, SW7 3NH
• Sold Nov 2019£905,000 | 2 Bed FlatFlat 24, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 24, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Oct 2019£2,000,000 | 3 Bed FlatFlat 46, Malvern Court, Onslow Square, London, SW7 3HYFlat 46, Malvern Court, Onslow Square, London, SW7 3HY
• Sold Oct 2018£1,200,000 | 2 Bed FlatFlat 19, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 19, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Oct 2018£1,300,000 | 3 Bed FlatFlat 30, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 30, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Oct 2014£2,275,000 | 2 Bed FlatFlat 9, 27, Onslow Square, London, SW7 3NHFlat 9, 27, Onslow Square, London, SW7 3NH
• Sold Sep 2014£1,625,000 | 2 Bed FlatFlat 1, 27, Onslow Square, London, SW7 3NHFlat 1, 27, Onslow Square, London, SW7 3NH
• Sold Oct 2013£1,700,000 | 3 Bed FlatFlat 18, 27, Onslow Square, London, SW7 3NHFlat 18, 27, Onslow Square, London, SW7 3NH
• Sold Feb 2013£1,375,000 | 2 Bed FlatFlat 8, 27, Onslow Square, London, SW7 3NHFlat 8, 27, Onslow Square, London, SW7 3NH
• Sold Jan 2012£1,751,000 | 2 Bed FlatFlat 17, 27, Onslow Square, London, SW7 3NHFlat 17, 27, Onslow Square, London, SW7 3NH

Our analysis of the public data ranks Flat 10, 27, Onslow Square as the 225th largest and the 256th most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £704k less expensive than the typical property.

• Oratory Roman Catholic Primary School

  400 m away
• Our Lady of Victories RC Primary School

  400 m away
• Marlborough Primary School

  500 m away

• St. Thomas More Language College

  800 m away
• Chelsea Academy

  1.9 km away
• The London Oratory School

  1.9 km away

• South Kensington

  |

  100 m away
• Gloucester Road

  |

  700 m away
• Knightsbridge

  |

  1.0 km away

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