Flat 12, 105, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 Apr 2018.

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

According to HM Land Registry, Flat 12, 105, Onslow Square was last sold on 7th April 2021 for £2,500,000 and was recorded as a leasehold flat.

The property has had 2 sales since 1995.

Since April 2021, the market for similar properties has dropped by 24.0%.

• Sold Apr 2021£2,500,000
• Sold Sep 1996£195,000

According to the Land Registry and our network of Estate Agents, there have been 23 sales of properties similar to Flat 12, 105, Onslow Square within a radius of 250 metres since 2008.

The most recent example is Flat 10, 81, Onslow Square, London, SW7 3LT, a leasehold flat which sold for £2,500,000 on the 15th August 2025.

Read more about house prices in SW7.

• Sold Aug 2025£2,500,000 | 3 Bed FlatFlat 10, 81, Onslow Square, London, SW7 3LTFlat 10, 81, Onslow Square, London, SW7 3LT
• Sold Mar 2025£2,950,000 | 4 Bed FlatFlat 25, Melton Court, Onslow Crescent, London, SW7 3JQFlat 25, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Jan 2025£2,525,000 | 4 Bed FlatFlat 58, Melton Court, Onslow Crescent, London, SW7 3JHFlat 58, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Aug 2022£875,000 | 3 Bed FlatFlat 16, 9-11 , Manson Place, London, SW7 5LTFlat 16, 9-11 , Manson Place, London, SW7 5LT
• Sold Jun 2021£3,325,000 | 3 Bed FlatFlat 4, 81, Onslow Square, London, SW7 3LTFlat 4, 81, Onslow Square, London, SW7 3LT
• Sold Apr 2020£2,325,000 | 3 Bed FlatFlat 7, 73, Onslow Gardens, London, SW7 3QDFlat 7, 73, Onslow Gardens, London, SW7 3QD
• Sold Sep 2019£2,682,000 | 3 Bed Flat1A, Neville Street, London, SW7 3AR1A, Neville Street, London, SW7 3AR
• Sold Aug 2019£950,000 | 4 Bed FlatFlat 10, 97, Onslow Square, London, SW7 3LUFlat 10, 97, Onslow Square, London, SW7 3LU
• Sold Mar 2019£1,810,000 | 4 Bed FlatFlat 1, Glendower Mansions , Glendower Place, London, SW7 3DSFlat 1, Glendower Mansions , Glendower Place, London, SW7 3DS
• Sold Jan 2019£2,649,999 | 4 Bed FlatFlat 66, Melton Court, Onslow Crescent, London, SW7 3JHFlat 66, Melton Court, Onslow Crescent, London, SW7 3JH
• Sold Sep 2018£2,150,000 | 3 Bed FlatFlat 35, Melton Court, Onslow Crescent, London, SW7 3JQFlat 35, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Dec 2016£3,000,000 | 3 Bed FlatFlat 1, 30, Onslow Gardens, London, SW7 3AHFlat 1, 30, Onslow Gardens, London, SW7 3AH
• Sold Dec 2015£3,000,000 | 3 Bed FlatFlat 8, 83-85 , Onslow Gardens, London, SW7 3BUFlat 8, 83-85 , Onslow Gardens, London, SW7 3BU
• Sold Oct 2015£3,200,000 | 3 Bed FlatFlat 5, Avenue Studios, Sydney Close, London, SW3 6HWFlat 5, Avenue Studios, Sydney Close, London, SW3 6HW
• 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 Apr 2014£1,287,500 | 3 Bed FlatFlat 14, 9-11 , Manson Place, London, SW7 5LTFlat 14, 9-11 , Manson Place, London, SW7 5LT
• Sold Jan 2014£2,861,000 | 4 Bed FlatFlat 12, Melton Court, Onslow Crescent, London, SW7 3JQFlat 12, Melton Court, Onslow Crescent, London, SW7 3JQ
• Sold Jul 2011£900,000 | 4 Bed FlatFlat 5, 34, Onslow Gardens, London, SW7 3AQFlat 5, 34, Onslow Gardens, London, SW7 3AQ
• Sold Oct 2008£3,400,000 | 3 Bed Flat58, Onslow Gardens, London, SW7 3QA58, Onslow Gardens, London, SW7 3QA

Onslow Square, London, SW7 has a total of 321 addresses. According to our analysis of all the public data, Flat 12, 105, Onslow Square is the 48th largest and the 80th most expensive property on the street.

When compared to the postcode district it is £559k 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

  1.0 km away
• Chelsea Academy

  1.6 km away
• The London Oratory School

  1.7 km away

• South Kensington

  |

  300 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.