Flat 4, 38, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 11 Jun 2021.

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

Since 2009 17 properties similar to Flat 4, 38, Onslow Square have sold within a radius of 270 metres, per the Land Registry and our network of Estate Agents.

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

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 Aug 2025£2,500,000 | 3 Bed FlatFlat 10, 81, Onslow Square, London, SW7 3LTFlat 10, 81, Onslow Square, London, SW7 3LT
• Sold Jul 2025£2,190,000 | 3 Bed FlatFlat 1, 23, Sumner Place, London, SW7 3EGFlat 1, 23, Sumner Place, London, SW7 3EG
• Sold Mar 2025£3,500,000 | 3 Bed FlatFlat 3, 26, Onslow Gardens, London, SW7 3AGFlat 3, 26, Onslow Gardens, London, SW7 3AG
• Sold Sep 2024£2,600,000 | 3 Bed Flat38, Rose Square, London, SW3 6RS38, Rose Square, London, SW3 6RS
• Sold Dec 2023£2,841,500 | 3 Bed Flat62, Rose Square, London, SW3 6RS62, 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 Dec 2020£4,950,000 | 3 Bed Flat47, Onslow Square, London, SW7 3LR47, Onslow Square, London, SW7 3LR
• Sold Dec 2016£3,000,000 | 3 Bed FlatFlat 1, 30, Onslow Gardens, London, SW7 3AHFlat 1, 30, Onslow Gardens, London, SW7 3AH
• Sold Jun 2016£4,140,000 | 3 Bed FlatFlat 2, 44, Onslow Square, London, SW7 3NXFlat 2, 44, Onslow Square, London, SW7 3NX
• Sold Sep 2015£3,850,000 | 3 Bed Flat20, Rose Square, London, SW3 6RS20, Rose Square, London, SW3 6RS
• Sold Jun 2015£3,850,000 | 3 Bed FlatFlat 7, 21, Onslow Gardens, London, SW7 3ALFlat 7, 21, Onslow Gardens, London, SW7 3AL
• Sold Jun 2014£4,260,000 | 3 Bed Flat52, Rose Square, London, SW3 6RS52, Rose Square, London, SW3 6RS
• Sold May 2014£3,900,000 | 3 Bed FlatFlat 3, 38, Onslow Square, London, SW7 3NSFlat 3, 38, Onslow Square, London, SW7 3NS
• 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
• Sold May 2009£2,300,000 | 3 Bed FlatFlat 4, 51, Onslow Square, London, SW7 3LRFlat 4, 51, Onslow Square, London, SW7 3LR

Of the 321 addresses on Onslow Square, London, SW7, Flat 4, 38, Onslow Square comes out as the 67th largest and the 47th most expensive in our analysis of the public data.

It is also £1.174m more expensive than the average property across the SW7 district.

• Oratory Roman Catholic Primary School

  300 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

  1.7 km away
• The London Oratory School

  1.8 km away

• South Kensington

  |

  300 m away
• Gloucester Road

  |

  700 m away
• Sloane Square

  |

  1.2 km away

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