Flat 7, 5, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 Nov 2024.

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

Since 2008 26 properties similar to Flat 7, 5, Onslow Square have sold within a radius of 280 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 23rd December 2025, was Flat 8, 20, Onslow Square, London, SW7 3NP, a leasehold flat which sold for £2,280,000.

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 Nov 2024£2,825,000 | 3 Bed FlatFlat 2, 23, Onslow Square, London, SW7 3NJFlat 2, 23, Onslow Square, London, SW7 3NJ
• Sold Dec 2023£2,841,500 | 3 Bed Flat62, Rose Square, London, SW3 6RS62, Rose Square, London, SW3 6RS
• Sold Oct 2023£2,600,000 | 3 Bed FlatFlat 6, 89, Onslow Square, London, SW7 3LTFlat 6, 89, Onslow Square, London, SW7 3LT
• 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 Jun 2021£3,325,000 | 3 Bed FlatFlat 4, 81, Onslow Square, London, SW7 3LTFlat 4, 81, Onslow Square, London, SW7 3LT
• Sold Mar 2021£2,300,000 | 3 Bed Flat1, Onslow Square, London, SW7 3NJ1, Onslow Square, London, SW7 3NJ
• Sold Jan 2017£3,000,000 | 3 Bed Flat63, Onslow Square, London, SW7 3LS63, Onslow Square, London, SW7 3LS
• Sold Jul 2016£3,600,000 | 3 Bed FlatFlat 8, 14, Onslow Square, London, SW7 3NPFlat 8, 14, Onslow Square, London, SW7 3NP
• Sold Mar 2016£4,400,000 | 3 Bed Flat19, Onslow Square, London, SW7 3NJ19, Onslow Square, London, SW7 3NJ
• Sold Nov 2015£3,200,000 | 3 Bed FlatFlat 6, 14, Onslow Square, London, SW7 3NPFlat 6, 14, Onslow Square, London, SW7 3NP
• 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 Jul 2014£1,999,000 | 3 Bed FlatFlat 4, 14, Onslow Square, London, SW7 3NPFlat 4, 14, Onslow Square, London, SW7 3NP
• Sold Feb 2013£2,300,000 | 3 Bed FlatFlat 5, 5, Onslow Square, London, SW7 3NJFlat 5, 5, Onslow Square, London, SW7 3NJ
• Sold Sep 2012£518,619 | 3 Bed FlatFlat 3, 5, Onslow Square, London, SW7 3NJFlat 3, 5, Onslow Square, London, SW7 3NJ
• Sold Jan 2011£2,250,000 | 3 Bed FlatFlat 3, 89, Onslow Square, London, SW7 3LTFlat 3, 89, Onslow Square, London, SW7 3LT
• 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 7, 5, Onslow Square comes out as the 122nd largest and the 101st most expensive in our analysis of the public data.

It is also £388k more expensive than the average property across the SW7 district.

• Oratory Roman Catholic Primary School

  300 m away
• Marlborough Primary School

  400 m away
• Our Lady of Victories RC Primary School

  500 m away

• St. Thomas More Language College

  700 m away
• Chelsea Academy

  1.8 km away
• The London Oratory School

  1.9 km away

• South Kensington

  |

  200 m away
• Gloucester Road

  |

  700 m away
• Knightsbridge

  |

  1.0 km away

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