Basement Flat, 50A, Onslow Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 06 Apr 2017.

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

According to HM Land Registry, Basement Flat, 50A, Onslow Gardens was last sold on 15th August 2007 for £750,000 and was recorded as a leasehold flat.

The property has had 2 sales since 1995.

Since August 2007, the market for similar properties has risen by 17.0%.

According to the Land Registry and our network of Estate Agents, there have been 30 sales of properties similar to Basement Flat, 50A, Onslow Gardens within a radius of 220 metres since 2010.

The most recent example is Flat 12, 35, Onslow Gardens, London, SW7 3PY, a leasehold flat which sold for £1,850,000 on the 6th March 2026.

Read more about house prices in SW7.

• Sold Mar 2026£1,850,000 | 3 Bed FlatFlat 12, 35, Onslow Gardens, London, SW7 3PYFlat 12, 35, Onslow Gardens, London, SW7 3PY
• Sold Sep 2025£2,250,000 | 3 Bed FlatFlat F, 13, Brechin Place, London, SW7 4QBFlat F, 13, Brechin Place, London, SW7 4QB
• Sold Jun 2025£2,700,000 | 2 Bed FlatFlat 3, 16, Cranley Gardens, London, SW7 3DAFlat 3, 16, Cranley Gardens, London, SW7 3DA
• Sold Nov 2024£2,025,000 | 3 Bed FlatFlat 6, 42, Onslow Gardens, London, SW7 3PYFlat 6, 42, Onslow Gardens, London, SW7 3PY
• Sold Sep 2024£1,275,000 | 3 Bed FlatBasement, 109A, Onslow Square, London, SW7 3LUBasement, 109A, Onslow Square, London, SW7 3LU
• Sold Jul 2023£2,600,000 | 3 Bed FlatFlat 6, 30, Onslow Gardens, London, SW7 3AHFlat 6, 30, Onslow Gardens, London, SW7 3AH
• Sold Jun 2023£2,650,000 | 3 Bed FlatFlat 3, 6, Onslow Gardens, London, SW7 3LYFlat 3, 6, Onslow Gardens, London, SW7 3LY
• Sold Dec 2022£875,000 | 3 Bed FlatFlat 18, 9-11 , Manson Place, London, SW7 5LTFlat 18, 9-11 , Manson Place, London, SW7 5LT
• Sold Oct 2022£1,518,000 | 3 Bed FlatFlat 6, 34, Onslow Gardens, London, SW7 3AQFlat 6, 34, Onslow Gardens, London, SW7 3AQ
• Sold May 2022£2,000,000 | 3 Bed FlatFlat 3, 49, Onslow Gardens, London, SW7 3QFFlat 3, 49, Onslow Gardens, London, SW7 3QF
• Sold May 2022£2,000,000 | 3 Bed Flat12B, Manson Mews, London, SW7 5AF12B, Manson Mews, London, SW7 5AF
• Sold Sep 2021£800,000 | 3 Bed FlatFlat 12, 42, Onslow Gardens, London, SW7 3PYFlat 12, 42, Onslow Gardens, London, SW7 3PY
• Sold Jul 2021£2,650,000 | 3 Bed FlatFlat 10, 42, Onslow Gardens, London, SW7 3PYFlat 10, 42, Onslow Gardens, London, SW7 3PY
• Sold Nov 2020£1,900,000 | 3 Bed Flat77A, Onslow Gardens, London, SW7 3QD77A, Onslow Gardens, London, SW7 3QD
• Sold Oct 2017£3,450,000 | 3 Bed FlatFlat 8, 55, Onslow Gardens, London, SW7 3QFFlat 8, 55, Onslow Gardens, London, SW7 3QF
• Sold Jun 2017£2,315,000 | 3 Bed FlatFlat H, 70, Onslow Gardens, London, SW7 3QBFlat H, 70, Onslow Gardens, London, SW7 3QB
• Sold Sep 2013£1,417,500 | 3 Bed FlatFlat 2, 29, Stanhope Gardens, London, SW7 5QXFlat 2, 29, Stanhope Gardens, London, SW7 5QX
• Sold Jan 2012£1,675,000 | 3 Bed FlatFlat 15, 35, Onslow Gardens, London, SW7 3PYFlat 15, 35, Onslow Gardens, London, SW7 3PY
• Sold Mar 2011£1,700,000 | 3 Bed FlatFlat 3, 35, Onslow Gardens, London, SW7 3PYFlat 3, 35, Onslow Gardens, London, SW7 3PY
• Sold Jan 2010£1,700,000 | 3 Bed FlatFlat 8, 35, Onslow Gardens, London, SW7 3PYFlat 8, 35, Onslow Gardens, London, SW7 3PY

Onslow Gardens, London, SW7 has a total of 504 addresses. According to our analysis of all the public data, Basement Flat, 50A, Onslow Gardens is the 173rd largest and the 158th most expensive property on the street.

When compared to the postcode district it is £169k less expensive than the average property in SW7.

• Our Lady of Victories RC Primary School

  100 m away
• Bousfield Primary School

  500 m away
• Oratory Roman Catholic Primary School

  600 m away

• St. Thomas More Language College

  1.2 km away
• The London Oratory School

  1.5 km away
• Chelsea Academy

  1.5 km away

• Gloucester Road

  |

  400 m away
• South Kensington

  |

  400 m away
• Earl's Court

  |

  1.0 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.