Flat 11B, Basil Mansions has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 04 Jul 2023.

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

Flat 11B, Basil Mansions last changed hands on 12th November 2004, selling for £320,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

• Sold Nov 2004£320,000
• Sold Jan 2002£210,000

Land Registry records and our Estate Agent network show 5 sales of comparable properties within 250 metres of Flat 11B, Basil Mansions across the last 2 years.

Most recently, Flat 13, Princes Court 88, Brompton Road, London, SW3 1ES, a leasehold flat, sold at £175,000 on the 23rd November 2022.

Read more about house prices in SW3.

• Sold Nov 2022£175,000 | 1 Bed FlatFlat 13, Princes Court 88, Brompton Road, London, SW3 1ESFlat 13, Princes Court 88, Brompton Road, London, SW3 1ES
• Sold Apr 2017£260,000 | 1 Bed FlatFlat 25, Jefferson House 11, Basil Street, London, SW3 1AXFlat 25, Jefferson House 11, Basil Street, London, SW3 1AX
• Sold Jun 2014£850,000 | 1 Bed Flat26B Park Mansions, Park Mansions, London, SW1X 7QS26B Park Mansions, Park Mansions, London, SW1X 7QS

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

Agents in our network have reported 1 letting within 250 metres of Flat 11B, Basil Mansions across the last 2 years.

The newest of these is Flat 56, Lincoln House, Basil Street, London, SW3 1AW, a leasehold flat 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.

Our analysis of the public data ranks Flat 11B, Basil Mansions as the 198th largest and the 197th most expensive of the 233 addresses on Basil Street, London, SW3.

Against the SW3 postcode district average, it is £1.395m less expensive than the typical property.

• 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

Environment Agency data suggests this area has a Very Low risk of flooding.