Flat 4, 52, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 18 Nov 2014.

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

Flat 4, 52, Onslow Square last changed hands on 23rd February 2015, selling for £3,100,000. 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 40.1% since February 2015.

• Sold Feb 2015£3,100,000
• Sold Feb 2003£775,000

Land Registry records and our Estate Agent network show 20 sales of comparable properties within 260 metres of Flat 4, 52, Onslow Square since 2008.

Most recently, Flat 2, 11, Onslow Square, London, SW7 3NJ, a leasehold flat, sold at £2,750,000 on the 20th November 2025.

Read more about house prices in SW7.

• Sold Nov 2025£2,750,000 | 3 Bed FlatFlat 2, 11, Onslow Square, London, SW7 3NJFlat 2, 11, Onslow Square, London, SW7 3NJ
• Sold Nov 2024£2,825,000 | 3 Bed FlatFlat 2, 23, Onslow Square, London, SW7 3NJFlat 2, 23, Onslow Square, London, SW7 3NJ
• Sold Dec 2023£2,841,500 | 3 Bed Flat62, Rose Square, London, SW3 6RS62, Rose Square, London, SW3 6RS
• Sold Oct 2022£3,100,000 | 3 Bed Flat42, Rose Square, London, SW3 6RS42, Rose Square, London, SW3 6RS
• Sold Sep 2022£2,450,000 | 3 Bed FlatFlat 2, 19, Onslow Gardens, London, SW7 3ALFlat 2, 19, Onslow Gardens, London, SW7 3AL
• Sold Aug 2022£3,600,000 | 3 Bed FlatFlat 1, 17, Onslow Square, London, SW7 3NJFlat 1, 17, Onslow Square, London, SW7 3NJ
• Sold Mar 2021£2,300,000 | 3 Bed Flat1, Onslow Square, London, SW7 3NJ1, Onslow Square, London, SW7 3NJ
• Sold Oct 2018£2,650,000 | 3 Bed FlatFlat 2, 52, Onslow Square, London, SW7 3NXFlat 2, 52, Onslow Square, London, SW7 3NX
• Sold Jun 2018£3,000,000 | 3 Bed FlatFlat 1, 38, Onslow Square, London, SW7 3NSFlat 1, 38, Onslow Square, London, SW7 3NS
• Sold Jun 2016£4,140,000 | 3 Bed FlatFlat 2, 44, Onslow Square, London, SW7 3NXFlat 2, 44, Onslow Square, London, SW7 3NX
• Sold Mar 2016£4,400,000 | 3 Bed Flat19, Onslow Square, London, SW7 3NJ19, Onslow Square, London, SW7 3NJ
• Sold Jun 2015£3,850,000 | 3 Bed FlatFlat 7, 21, Onslow Gardens, London, SW7 3ALFlat 7, 21, Onslow Gardens, London, SW7 3AL
• Sold Mar 2015£3,250,000 | 3 Bed FlatFlat 5, 52, Onslow Square, London, SW7 3NXFlat 5, 52, Onslow Square, London, SW7 3NX
• Sold Dec 2014£3,950,000 | 3 Bed FlatFlat 6, 81, Onslow Square, London, SW7 3LTFlat 6, 81, Onslow Square, London, SW7 3LT
• Sold Nov 2014£3,250,000 | 3 Bed FlatFlat 5, 38, Onslow Square, London, SW7 3NSFlat 5, 38, Onslow Square, London, SW7 3NS
• Sold Aug 2014£3,730,000 | 3 Bed FlatFlat 1, 38, Onslow Gardens, London, SW7 3PYFlat 1, 38, Onslow Gardens, London, SW7 3PY
• Sold May 2014£3,900,000 | 3 Bed FlatFlat 3, 38, Onslow Square, London, SW7 3NSFlat 3, 38, Onslow Square, London, SW7 3NS
• Sold Feb 2013£2,300,000 | 3 Bed FlatFlat 5, 5, Onslow Square, London, SW7 3NJFlat 5, 5, Onslow Square, London, SW7 3NJ
• Sold Jan 2011£2,250,000 | 3 Bed FlatFlat 3, 89, Onslow Square, London, SW7 3LTFlat 3, 89, Onslow Square, London, SW7 3LT
• Sold Mar 2008£2,950,000 | 3 Bed Flat51, Rose Square, London, SW3 6RS51, Rose Square, London, SW3 6RS

Our analysis of the public data ranks Flat 4, 52, Onslow Square as the 149th largest and the 68th most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £723k more expensive than the typical property.

• Our Lady of Victories RC Primary School

  300 m away
• Oratory Roman Catholic Primary School

  400 m away
• Marlborough Primary School

  600 m away

• St. Thomas More Language College

  900 m away
• Chelsea Academy

  1.6 km away
• The London Oratory School

  1.7 km away

• South Kensington

  |

  300 m away
• Gloucester Road

  |

  600 m away
• Knightsbridge

  |

  1.2 km away

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