Flat 4, Basil Mansions has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 08 May 2026.

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

According to HM Land Registry, Flat 4, Basil Mansions was last sold on 23rd January 2004 for £1,875,000 and was recorded as a leasehold flat.

The property has had 2 sales since 1995.

• Sold Jan 2004£1,875,000
• Sold Nov 1995£650,000

According to the Land Registry and our network of Estate Agents, there have been 19 sales of properties similar to Flat 4, Basil Mansions within a radius of 250 metres over the last 2 years.

The most recent example is Flat 7, Basil Mansions, Basil Street, London, SW3 1AP, a leasehold flat which sold for £3,600,000 on the 7th October 2024.

Read more about house prices in SW3.

• Sold Oct 2024£3,600,000 | 3 Bed FlatFlat 7, Basil Mansions, Basil Street, London, SW3 1APFlat 7, Basil Mansions, Basil Street, London, SW3 1AP
• Sold Jun 2022£5,550,000 | 3 Bed FlatFlat 12, Basil Mansions, Basil Street, London, SW3 1APFlat 12, Basil Mansions, Basil Street, London, SW3 1AP
• Sold Jun 2019£4,500,000 | 3 Bed FlatFlat 18, Basil Mansions, Basil Street, London, SW3 1APFlat 18, Basil Mansions, Basil Street, London, SW3 1AP

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Our network of Estate Agents reports 1 let within 250 metres of Flat 4, Basil Mansions over the last 2 years.

Most recently, Flat 56, Lincoln House, Basil Street, London, SW3 1AW, a leasehold flat, was let by Maplewood Property in November 2025.

• 
  Let agreed Nov 2025£ Undisclosed | 2 Bed FlatFlat 56, Lincoln House, Basil Street, London, SW3 1AWFlat 56, Lincoln House, Basil Street, London, SW3 1AW

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Basil Street, London, SW3 has a total of 233 addresses. According to our analysis of all the public data, Flat 4, Basil Mansions is the 14th largest and the 17th most expensive property on the street.

When compared to the postcode district it is £1.915m more expensive than the average property in SW3.

• Holy Trinity CofE Primary School

  800 m away
• St Joseph's Catholic Primary School

  800 m away
• Marlborough Primary School

  900 m away

• St. Thomas More Language College

  800 m away
• Westminster City School

  1.5 km away
• The Grey Coat Hospital

  1.9 km away

• Knightsbridge

  |

  100 m away
• Hyde Park Corner

  |

  600 m away
• Sloane Square

  |

  900 m away

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