Flat 7, 27, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 24 Aug 2012.

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

The most recent sale of Flat 7, 27, Onslow Square completed on 30th March 2015 at £1,400,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold 3 times.

Values of comparable properties have dropped by 25.2% over the period since March 2015.

• Sold Mar 2015£1,400,000
• Sold Nov 2013£642,500
• Sold Oct 2002£350,000

Since 2007 50 properties similar to Flat 7, 27, Onslow Square have sold within a radius of 290 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 18th May 2026, was Flat 20, Petersham House 29-37, Harrington Road, London, SW7 3HD, a leasehold flat which sold for £650,000.

Read more about house prices in SW7.

• Sold May 2026£650,000 | 2 Bed FlatFlat 20, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 20, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Dec 2025£933,500 | 2 Bed FlatFlat 14, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 14, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Jan 2025£18,000 | 2 Bed Flat13, Bute Street, London, SW7 3EY13, Bute Street, London, SW7 3EY
• 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 Aug 2024£1,014,000 | 2 Bed FlatFlat 2, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 2, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Dec 2023£800,000 | 2 Bed FlatFlat 1, 181, Fulham Road, London, SW3 6JNFlat 1, 181, Fulham Road, London, SW3 6JN
• Sold Nov 2023£1,050,000 | 2 Bed FlatFlat 2, 27, Onslow Square, London, SW7 3NHFlat 2, 27, Onslow Square, London, SW7 3NH
• Sold Mar 2022£1,225,000 | 2 Bed FlatFlat 1, 10, Thurloe Square, London, SW7 2TAFlat 1, 10, Thurloe Square, London, SW7 2TA
• Sold Mar 2022£1,130,000 | 2 Bed FlatFlat 11, 27, Onslow Square, London, SW7 3NHFlat 11, 27, Onslow Square, London, SW7 3NH
• Sold Feb 2022£1,180,000 | 2 Bed FlatFlat 31, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 31, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Jun 2021£499,999 | 2 Bed FlatFlat 3, 161, Fulham Road, London, SW3 6SNFlat 3, 161, Fulham Road, London, SW3 6SN
• Sold Dec 2019£1,250,000 | 2 Bed FlatApartment 1, 21, Harrington Road, London, SW7 3EUApartment 1, 21, Harrington Road, London, SW7 3EU
• Sold Jul 2019£725,000 | 2 Bed FlatFlat 28, Thurloe Court, Fulham Road, London, SW3 6SBFlat 28, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Jul 2019£2,416,667 | 2 Bed FlatFlat 1, 266, Brompton Road, London, SW3 2ASFlat 1, 266, Brompton Road, London, SW3 2AS
• Sold May 2019£1,040,000 | 2 Bed FlatFlat 35, Thurloe Court, Fulham Road, London, SW3 6SBFlat 35, Thurloe Court, Fulham Road, London, SW3 6SB
• Sold Oct 2018£875,000 | 2 Bed FlatFlat 22, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 22, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Mar 2016£2,000,000 | 2 Bed FlatFlat 37, Malvern Court, Onslow Square, London, SW7 3HYFlat 37, Malvern Court, Onslow Square, London, SW7 3HY
• Sold Jan 2016£1,825,000 | 2 Bed Flat4C , Thurloe Street, London, SW7 2ST4C , Thurloe Street, London, SW7 2ST
• Sold Oct 2012£820,000 | 2 Bed FlatFlat 12, Petersham House 29-37, Harrington Road, London, SW7 3HDFlat 12, Petersham House 29-37, Harrington Road, London, SW7 3HD
• Sold Jun 2007£930,000 | 2 Bed FlatFlat 19, 27, Onslow Square, London, SW7 3NHFlat 19, 27, Onslow Square, London, SW7 3NH

Of the 321 addresses on Onslow Square, London, SW7, Flat 7, 27, Onslow Square comes out as the 262nd largest and the 301st most expensive in our analysis of the public data.

It is also £1.023m less expensive than the average property across the SW7 district.

• Oratory Roman Catholic Primary School

  400 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

  1.9 km away
• The London Oratory School

  1.9 km away

• South Kensington

  |

  100 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.