Flat 1B, Basil Mansions has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Dec 2024.

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

According to HM Land Registry, Flat 1B, Basil Mansions was last sold on 23rd December 2015 for £1,900,000 and was recorded as a leasehold flat.

The property has had 3 sales since 1995.

Since December 2015, the market for similar properties has dropped by 35.7%.

• Sold Dec 2015£1,900,000
• Sold Nov 2011£1,292,000
• Sold Mar 2004£420,000

According to the Land Registry and our network of Estate Agents, there have been 36 sales of properties similar to Flat 1B, Basil Mansions within a radius of 250 metres over the last 2 years.

The most recent example is 82 Park Mansions, Knightsbridge, London, SW1X 7QU, a leasehold flat which sold for £1,550,000 on the 2nd February 2026.

Read more about house prices in SW3.

• Sold Feb 2026£1,550,000 | 3 Bed Flat82 Park Mansions, Knightsbridge, London, SW1X 7QU82 Park Mansions, Knightsbridge, London, SW1X 7QU
• Sold May 2024£2,370,000 | 2 Bed FlatFlat 36, Lincoln House, Basil Street, London, SW3 1AWFlat 36, Lincoln House, Basil Street, London, SW3 1AW
• Sold Oct 2023£1,345,000 | 3 Bed FlatFlat 11, Princes Court 88, Brompton Road, London, SW3 1ESFlat 11, Princes Court 88, Brompton Road, London, SW3 1ES

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

Our network of Estate Agents reports 1 let of a property similar to Flat 1B, Basil Mansions within a radius of 250 metres 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 1B, Basil Mansions is the 151st largest and the 158th most expensive property on the street.

When compared to the postcode district it is £318k less 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.