Flat 8, 97, Onslow Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Jun 2025.

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

According to HM Land Registry, Flat 8, 97, Onslow Square was last sold on 23rd September 2004 for £1,650,000 and was recorded as a leasehold flat.

The property has only had this single sale since 1995.

• Sold Sep 2004£1,650,000

According to the Land Registry and our network of Estate Agents, there have been 17 sales of properties similar to Flat 8, 97, Onslow Square within a radius of 250 metres since 2009.

The most recent example is 60, Rose Square, London, SW3 6RS, a leasehold flat which sold for £3,650,000 on the 22nd September 2025.

Read more about house prices in SW7.

• Sold Sep 2025£3,650,000 | 3 Bed Flat60, Rose Square, London, SW3 6RS60, Rose Square, London, SW3 6RS
• Sold Jul 2025£3,000,000 | 4 Bed FlatFlat 1, 42, Onslow Gardens, London, SW7 3PYFlat 1, 42, Onslow Gardens, London, SW7 3PY
• 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 Sep 2024£2,600,000 | 3 Bed Flat38, Rose Square, London, SW3 6RS38, Rose Square, London, SW3 6RS
• Sold Sep 2021£3,500,000 | 3 Bed Flat64, Rose Square, London, SW3 6RS64, Rose Square, London, SW3 6RS
• Sold Aug 2021£11,500,000 | 4 Bed Flat43, Onslow Gardens, London, SW7 3PY43, Onslow Gardens, London, SW7 3PY
• Sold Apr 2021£2,500,000 | 4 Bed FlatFlat 12, 105, Onslow Square, London, SW7 3LUFlat 12, 105, Onslow Square, London, SW7 3LU
• Sold Aug 2019£950,000 | 4 Bed FlatFlat 10, 97, Onslow Square, London, SW7 3LUFlat 10, 97, 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 Feb 2017£2,250,000 | 3 Bed Flat21, Sydney Mews, London, SW3 6HL21, Sydney Mews, London, SW3 6HL
• Sold Mar 2015£2,300,000 | 4 Bed FlatFlat 4, 38, Onslow Gardens, London, SW7 3PYFlat 4, 38, Onslow Gardens, London, SW7 3PY
• Sold Sep 2014£3,750,000 | 4 Bed FlatFlat 1, 2, Cranley Place, London, SW7 3ABFlat 1, 2, Cranley Place, London, SW7 3AB
• Sold Jun 2014£4,260,000 | 3 Bed Flat52, Rose Square, London, SW3 6RS52, Rose Square, London, SW3 6RS
• Sold Dec 2013£3,700,000 | 3 Bed Flat54, Rose Square, London, SW3 6RS54, Rose Square, London, SW3 6RS
• Sold Oct 2011£4,350,000 | 4 Bed FlatFlat 4, 43, Onslow Square, London, SW7 3LRFlat 4, 43, Onslow Square, London, SW7 3LR
• Sold Jul 2011£900,000 | 4 Bed FlatFlat 5, 34, Onslow Gardens, London, SW7 3AQFlat 5, 34, Onslow Gardens, London, SW7 3AQ
• Sold Jul 2009£2,650,000 | 4 Bed FlatFlat 2, 7, Onslow Gardens, London, SW7 3LYFlat 2, 7, Onslow Gardens, London, SW7 3LY

Onslow Square, London, SW7 has a total of 321 addresses. According to our analysis of all the public data, Flat 8, 97, Onslow Square is the 29th largest and the 58th most expensive property on the street.

When compared to the postcode district it is £899k more expensive than the average property in SW7.

• Our Lady of Victories RC Primary School

  300 m away
• Oratory Roman Catholic Primary School

  400 m away
• Marlborough Primary School

  700 m away

• St. Thomas More Language College

  1.0 km away
• Chelsea Academy

  1.6 km away
• The London Oratory School

  1.7 km away

• South Kensington

  |

  300 m away
• Gloucester Road

  |

  500 m away
• Earl's Court

  |

  1.2 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.