Flat 24, 27, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 31 May 2023.

The property is not connected to mains gas and has mostly double glazing. It is heated using community scheme.

The most recent sale of Flat 24, 27, Onslow Square completed on 27th May 2005 at £1,200,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 this is the property's only sale.

• Sold May 2005£1,200,000

Since 2007 21 properties similar to Flat 24, 27, Onslow Square have sold within a radius of 290 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 28th May 2025, was Flat 7, Melton Court, Onslow Crescent, London, SW7 3JQ, a leasehold flat which sold for £2,000,000.

Read more about house prices in SW7.

• Sold May 2025£2,000,000 | 4 Bed FlatFlat 7, Melton Court, Onslow Crescent, London, SW7 3JQFlat 7, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Mar 2025£2,950,000 | 4 Bed FlatFlat 25, Melton Court, Onslow Crescent, London, SW7 3JQFlat 25, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Jan 2025£2,525,000 | 4 Bed FlatFlat 58, Melton Court, Onslow Crescent, London, SW7 3JHFlat 58, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Oct 2023£2,495,000 | 4 Bed FlatFlat 47, Malvern Court, Onslow Square, London, SW7 3HYFlat 47, Malvern Court, Onslow Square, London, SW7 3HY
• Sold Sep 2023£2,150,000 | 4 Bed FlatFlat 32, Malvern Court, Onslow Square, London, SW7 3HYFlat 32, Malvern Court, Onslow Square, London, SW7 3HY
• Sold Apr 2023£2,250,000 | 4 Bed FlatFlat 41, Malvern Court, Onslow Square, London, SW7 3HYFlat 41, Malvern Court, Onslow Square, London, SW7 3HY
• Sold Aug 2022£875,000 | 3 Bed FlatFlat 16, 9-11 , Manson Place, London, SW7 5LTFlat 16, 9-11 , Manson Place, London, SW7 5LT
• Sold May 2022£2,350,000 | 4 Bed FlatFlat 48, Melton Court, Onslow Crescent, London, SW7 3JHFlat 48, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Jun 2021£1,800,000 | 4 Bed FlatFlat 36, Melton Court, Onslow Crescent, London, SW7 3JQFlat 36, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Apr 2021£2,500,000 | 4 Bed FlatFlat 12, 105, Onslow Square, London, SW7 3LUFlat 12, 105, Onslow Square, London, SW7 3LU
• Sold Mar 2019£1,810,000 | 4 Bed FlatFlat 1, Glendower Mansions , Glendower Place, London, SW7 3DSFlat 1, Glendower Mansions , Glendower Place, London, SW7 3DS
• Sold Jan 2019£2,649,999 | 4 Bed FlatFlat 66, Melton Court, Onslow Crescent, London, SW7 3JHFlat 66, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Mar 2018£5,000,000 | 3 Bed FlatFlat 1, 61, Onslow Square, London, SW7 3LSFlat 1, 61, Onslow Square, London, SW7 3LS
• Sold Jun 2017£5,150,000 | 4 Bed Flat22, Alexander Place, London, SW7 2SF22, Alexander Place, London, SW7 2SF
• Sold Oct 2015£3,200,000 | 3 Bed FlatFlat 5, Avenue Studios, Sydney Close, London, SW3 6HWFlat 5, Avenue Studios, Sydney Close, London, SW3 6HW
• Sold Mar 2015£4,100,000 | 3 Bed FlatFlat 5, 61, Onslow Square, London, SW7 3LSFlat 5, 61, Onslow Square, London, SW7 3LS
• Sold Jan 2014£2,861,000 | 4 Bed FlatFlat 12, Melton Court, Onslow Crescent, London, SW7 3JQFlat 12, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Jun 2011£2,750,000 | 4 Bed FlatFlat 62, Melton Court, Onslow Crescent, London, SW7 3JHFlat 62, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Jan 2010£2,600,000 | 3 Bed FlatFlat 3, 14, Onslow Square, London, SW7 3NPFlat 3, 14, Onslow Square, London, SW7 3NP
• Sold Mar 2007£2,500,000 | 4 Bed FlatFlat 29, Melton Court, Onslow Crescent, London, SW7 3JQFlat 29, Melton Court, Onslow Crescent, London, SW7 3JQ

Of the 321 addresses on Onslow Square, London, SW7, Flat 24, 27, Onslow Square comes out as the 38th largest and the 102nd most expensive in our analysis of the public data.

It is also £369k more expensive than the average property across the SW7 district.

• 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

The flood risk here is rated Very Low, based on Environment Agency data.