Flat 6, 27, Onslow Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 01 Jun 2021.

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

Land Registry records and our Estate Agent network show 53 sales of comparable properties within 290 metres of Flat 6, 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 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 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 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 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 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 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 Sep 2017£1,700,000 | 2 Bed FlatFlat 10, 27, Onslow Square, London, SW7 3NHFlat 10, 27, Onslow Square, London, SW7 3NH
• 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 6, 27, Onslow Square as the 207th largest and the 240th most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £598k 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.