Flat 1, 52, Onslow Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 28 Feb 2024.

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

The most recent sale of Flat 1, 52, Onslow Square completed on 9th February 1998 at £425,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 this is the property's only sale.

• Sold Feb 1998£425,000

Since 2008 16 properties similar to Flat 1, 52, Onslow Square have sold within a radius of 260 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 20th November 2025, was Flat 2, 11, Onslow Square, London, SW7 3NJ, a leasehold flat which sold for £2,750,000.

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 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 Mar 2016£4,400,000 | 3 Bed Flat19, Onslow Square, London, SW7 3NJ19, Onslow Square, London, SW7 3NJ
• Sold Mar 2015£3,250,000 | 3 Bed FlatFlat 5, 52, Onslow Square, London, SW7 3NXFlat 5, 52, Onslow Square, London, SW7 3NX
• Sold Feb 2015£3,100,000 | 3 Bed FlatFlat 4, 52, Onslow Square, London, SW7 3NXFlat 4, 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 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 Mar 2008£2,950,000 | 3 Bed Flat51, Rose Square, London, SW3 6RS51, Rose Square, London, SW3 6RS

Of the 321 addresses on Onslow Square, London, SW7, Flat 1, 52, Onslow Square comes out as the 175th largest and the 64th most expensive in our analysis of the public data.

It is also £802k more expensive than the average property across the SW7 district.

• 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

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