Flat 3, 43, Onslow Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 Oct 2020.

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

Flat 3, 43, Onslow Square last changed hands on 20th September 2021, selling for £4,100,000. 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 25.9% since September 2021.

• Sold Sep 2021£4,100,000

Land Registry records and our Estate Agent network show 11 sales of comparable properties within 270 metres of Flat 3, 43, Onslow Square since 2010.

Most recently, 47, Rose Square, London, SW3 6RS, a leasehold flat, sold at £3,500,000 on the 4th April 2025.

Read more about house prices in SW7.

• Sold Apr 2025£3,500,000 | 3 Bed Flat47, Rose Square, London, SW3 6RS47, Rose Square, London, SW3 6RS
• Sold Sep 2024£3,700,000 | 4 Bed Flat2, Onslow Square, London, SW7 3NP2, Onslow Square, London, SW7 3NP
• Sold Apr 2024£4,100,000 | 3 Bed Flat44, Rose Square, London, SW3 6RS44, Rose Square, London, SW3 6RS
• Sold Jul 2023£3,750,000 | 4 Bed FlatFlat 2, 43, Onslow Square, London, SW7 3LRFlat 2, 43, Onslow Square, London, SW7 3LR
• Sold Dec 2019£4,225,000 | 3 Bed Flat26, Rose Square, London, SW3 6RS26, Rose Square, London, SW3 6RS
• Sold Feb 2017£2,250,000 | 3 Bed Flat21, Sydney Mews, London, SW3 6HL21, Sydney Mews, London, SW3 6HL
• Sold Apr 2015£4,250,000 | 4 Bed FlatFlat 7, 81, Onslow Square, London, SW7 3LTFlat 7, 81, Onslow Square, London, SW7 3LT
• Sold Sep 2014£3,900,000 | 3 Bed FlatFlat 4, Crescent Mansions 113, Fulham Road, London, SW3 6RLFlat 4, Crescent Mansions 113, Fulham Road, London, SW3 6RL
• Sold Dec 2013£5,100,000 | 4 Bed FlatFlat 1, 43, Onslow Square, London, SW7 3LRFlat 1, 43, Onslow Square, London, SW7 3LR
• Sold Oct 2011£4,350,000 | 4 Bed FlatFlat 4, 43, Onslow Square, London, SW7 3LRFlat 4, 43, Onslow Square, London, SW7 3LR
• Sold Nov 2010£3,770,000 | 3 Bed Flat34, Rose Square, London, SW3 6RS34, Rose Square, London, SW3 6RS

Our analysis of the public data ranks Flat 3, 43, Onslow Square as the 16th largest and the 33rd most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £1.589m more 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

  1.8 km away
• The London Oratory School

  1.9 km away

• South Kensington

  |

  100 m away
• Gloucester Road

  |

  600 m away
• Knightsbridge

  |

  1.1 km away

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