Flat 8, 11, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Sep 2018.

The property is connected to mains gas and has single glazed windows. It is heated using a boiler and radiators (mains gas).

Flat 8, 11, Onslow Square last changed hands on 25th November 2002, selling for £448,213. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold 3 times since 1995.

• Sold Nov 2002£448,213
• Sold Oct 1996£425,000
• Sold Jul 1996£275,000

Land Registry records and our Estate Agent network show 21 sales of comparable properties within 280 metres of Flat 8, 11, Onslow Square since 2007.

Most recently, 11, Rose Square, London, SW3 6RS, a leasehold flat, sold at £1,280,000 on the 25th November 2025.

Read more about house prices in SW7.

• Sold Nov 2025£1,280,000 | 2 Bed Flat11, Rose Square, London, SW3 6RS11, Rose Square, London, SW3 6RS
• Sold Jun 2025£1,333,000 | 2 Bed FlatFlat 3, 39, Sydney Street, London, SW3 6PUFlat 3, 39, Sydney Street, London, SW3 6PU
• Sold Aug 2024£1,150,000 | 2 Bed FlatFlat 36, Thurloe Court, Fulham Road, London, SW3 6SBFlat 36, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Dec 2023£800,000 | 2 Bed FlatFlat 1, 181, Fulham Road, London, SW3 6JNFlat 1, 181, Fulham Road, London, SW3 6JN
• Sold May 2023£2,800,000 | 2 Bed FlatFlat 3, 23, Onslow Square, London, SW7 3NJFlat 3, 23, Onslow Square, London, SW7 3NJ
• Sold Sep 2022£718,000 | 2 Bed Flat61A, Onslow Square, London, SW7 3LS61A, Onslow Square, London, SW7 3LS
• Sold Aug 2022£1,900,000 | 2 Bed Flat70, Rose Square, London, SW3 6RS70, Rose Square, London, SW3 6RS
• Sold Jun 2021£1,310,000 | 2 Bed FlatFlat 10, 48, Thurloe Square, London, SW7 2SXFlat 10, 48, Thurloe Square, London, SW7 2SX
• Sold Mar 2021£4,750,000 | 2 Bed FlatFlat 4, 46, Onslow Square, London, SW7 3NXFlat 4, 46, Onslow Square, London, SW7 3NX
• Sold Feb 2020£600,000 | 3 Bed FlatFlat 1, 33, Sydney Street, London, SW3 6PUFlat 1, 33, Sydney Street, London, SW3 6PU
• Sold Aug 2019£1,100,000 | 2 Bed Flat74, Rose Square, London, SW3 6RS74, Rose Square, London, SW3 6RS
• Sold Aug 2017£1,175,000 | 2 Bed FlatFlat 11, Thurloe Court, Fulham Road, London, SW3 6SBFlat 11, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Jan 2017£6,200,000 | 2 Bed FlatFlat 5, 20, Onslow Square, London, SW7 3NPFlat 5, 20, Onslow Square, London, SW7 3NP
• Sold Aug 2015£1,330,000 | 2 Bed FlatFlat 7, 46, Onslow Square, London, SW7 3NXFlat 7, 46, Onslow Square, London, SW7 3NX
• Sold Jan 2015£3,250,000 | 2 Bed Flat55A, Sydney Street, London, SW3 6PX55A, Sydney Street, London, SW3 6PX
• Sold Sep 2014£1,495,000 | 2 Bed FlatFlat 16, Thurloe Court, Fulham Road, London, SW3 6SBFlat 16, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Feb 2014£1,300,000 | 2 Bed Flat33, Rose Square, London, SW3 6RS33, Rose Square, London, SW3 6RS
• Sold Sep 2010£1,175,000 | 2 Bed Flat2, Rose Square, London, SW3 6RS2, Rose Square, London, SW3 6RS
• Sold Feb 2008£695,000 | 2 Bed FlatFlat 31, Thurloe Court, Fulham Road, London, SW3 6SBFlat 31, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Mar 2007£248,000 | 2 Bed Flat67A, Onslow Square, London, SW7 3LS67A, Onslow Square, London, SW7 3LS

Our analysis of the public data ranks Flat 8, 11, Onslow Square as the 278th largest and the 265th most expensive of the 321 addresses on Onslow Square, London, SW7.

Against the SW7 postcode district average, it is £769k less expensive than the typical property.

• 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

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