Flat 5, 52, Onslow Square last changed hands on 2nd March 2015, selling for £3,250,000. The transaction was logged as a leasehold flat by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has dropped by 39.9% since March 2015.

• Sold Mar 2015£3,250,000

Land Registry records and our Estate Agent network show 19 sales of comparable properties within 260 metres of Flat 5, 52, Onslow Square since 2008.

Most recently, Flat 8, 20, Onslow Square, London, SW7 3NP, a leasehold flat, sold at £2,280,000 on the 23rd December 2025.

Read more about house prices in SW7.

• Sold Dec 2025£2,280,000 | 3 Bed FlatFlat 8, 20, Onslow Square, London, SW7 3NPFlat 8, 20, Onslow Square, London, SW7 3NP
• Sold Nov 2025£2,750,000 | 3 Bed FlatFlat 2, 11, Onslow Square, London, SW7 3NJFlat 2, 11, Onslow Square, London, SW7 3NJ
• Sold Oct 2025£4,823,296 | 3 Bed Flat15, Reece Mews, London, SW7 3HE15, Reece Mews, London, SW7 3HE
• 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 2023£2,600,000 | 3 Bed FlatFlat 6, 89, Onslow Square, London, SW7 3LTFlat 6, 89, Onslow Square, London, SW7 3LT
• Sold Sep 2023£2,750,000 | 3 Bed FlatFlat 8, 61, Onslow Square, London, SW7 3LSFlat 8, 61, Onslow Square, London, SW7 3LS
• Sold Jul 2023£2,600,000 | 3 Bed FlatFlat 6, 30, Onslow Gardens, London, SW7 3AHFlat 6, 30, Onslow Gardens, London, SW7 3AH
• Sold Oct 2022£3,100,000 | 3 Bed Flat42, Rose Square, London, SW3 6RS42, Rose Square, London, SW3 6RS
• 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 Feb 2016£2,550,000 | 3 Bed FlatFlat 1, 46, Onslow Square, London, SW7 3NXFlat 1, 46, 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 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 Nov 2008£2,400,000 | 3 Bed Flat50, Rose Square, London, SW3 6RS50, Rose Square, London, SW3 6RS
• 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 5, 52, Onslow Square as the 199th largest and the 92nd most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £446k 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.