Flat 7, 81, Onslow Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Aug 2014.

The property is connected to mains gas and has single glazed windows. It is heated using community scheme.

According to HM Land Registry, Flat 7, 81, Onslow Square was last sold on 24th April 2015 for £4,250,000 and was recorded as a leasehold flat.

The property has had 2 sales since 1995.

Since April 2015, the market for similar properties has dropped by 35.7%.

• Sold Apr 2015£4,250,000
• Sold Mar 2011£2,500,000

According to the Land Registry and our network of Estate Agents, there have been 24 sales of properties similar to Flat 7, 81, Onslow Square within a radius of 260 metres since 2013.

The most recent example is Flat 5, 21, Onslow Gardens, London, SW7 3AL, a leasehold flat which sold for £3,700,000 on the 13th February 2026.

Read more about house prices in SW7.

• Sold Feb 2026£3,700,000 | 4 Bed FlatFlat 5, 21, Onslow Gardens, London, SW7 3ALFlat 5, 21, Onslow Gardens, London, SW7 3AL
• 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 Apr 2025£3,500,000 | 3 Bed Flat47, Rose Square, London, SW3 6RS47, Rose Square, London, SW3 6RS
• Sold Sep 2024£2,600,000 | 3 Bed Flat38, Rose Square, London, SW3 6RS38, 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 Jul 2023£3,750,000 | 4 Bed FlatFlat 2, 43, Onslow Square, London, SW7 3LRFlat 2, 43, Onslow Square, London, SW7 3LR
• Sold Jun 2022£3,500,000 | 3 Bed Flat65, Rose Square, London, SW3 6RS65, 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 Sep 2021£4,100,000 | 4 Bed FlatFlat 3, 43, Onslow Square, London, SW7 3LRFlat 3, 43, Onslow Square, London, SW7 3LR
• Sold Aug 2021£11,500,000 | 4 Bed Flat43, Onslow Gardens, London, SW7 3PY43, Onslow Gardens, London, SW7 3PY
• Sold Mar 2021£4,250,000 | 4 Bed Flat33, Onslow Gardens, London, SW7 3AQ33, Onslow Gardens, London, SW7 3AQ
• Sold Feb 2020£3,870,000 | 3 Bed Flat68, Rose Square, London, SW3 6RS68, Rose Square, London, SW3 6RS
• Sold Dec 2019£4,225,000 | 3 Bed Flat26, Rose Square, London, SW3 6RS26, Rose Square, London, SW3 6RS
• Sold Oct 2018£3,400,000 | 4 Bed FlatFlat 8, 78, Onslow Gardens, London, SW7 3QBFlat 8, 78, Onslow Gardens, London, SW7 3QB
• Sold Jan 2018£3,750,000 | 3 Bed Flat5, Rose Square, London, SW3 6RS5, Rose Square, London, SW3 6RS
• Sold Dec 2017£3,050,000 | 4 Bed FlatFlat 1, 35, Onslow Gardens, London, SW7 3PYFlat 1, 35, Onslow Gardens, London, SW7 3PY
• Sold Feb 2017£2,250,000 | 3 Bed Flat21, Sydney Mews, London, SW3 6HL21, Sydney Mews, London, SW3 6HL
• Sold Sep 2014£3,750,000 | 4 Bed FlatFlat 1, 2, Cranley Place, London, SW7 3ABFlat 1, 2, Cranley Place, London, SW7 3AB
• Sold Dec 2013£3,700,000 | 3 Bed Flat54, Rose Square, London, SW3 6RS54, Rose Square, London, SW3 6RS

Onslow Square, London, SW7 has a total of 321 addresses. According to our analysis of all the public data, Flat 7, 81, Onslow Square is the 26th largest and the 39th most expensive property on the street.

When compared to the postcode district it is £1.46m 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

  900 m away
• Chelsea Academy

  1.7 km away
• The London Oratory School

  1.7 km away

• South Kensington

  |

  200 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.