According to the Land Registry and our network of Estate Agents, there have been 575 property sales within 360 metres of 7, William Street over the last 2 years.

The most recent example is Apartment 9, 1, William Street, London, SW1X 9HL, a leasehold flat which sold for £2,550,000 on the 30th September 2025.

Read more about house prices in SW1.

• Sold Sep 2025£2,550,000 | 3 Bed FlatApartment 9, 1, William Street, London, SW1X 9HLApartment 9, 1, William Street, London, SW1X 9HL
• Sold Mar 2024£2,650,000 | 3 Bed FlatApartment 7, 1, William Street, London, SW1X 9HLApartment 7, 1, William Street, London, SW1X 9HL
• Sold Sep 2023£15,200,000 | 3 Bed FlatApartment 4, 1, William Street, London, SW1X 9HLApartment 4, 1, William Street, London, SW1X 9HL

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

Our network of Estate Agents reports 1 let within 360 metres of 7, William Street 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.

• St George's Hanover Square CofE Primary School

  900 m away
• Holy Trinity CofE Primary School

  1.0 km away
• St Peter's Eaton Square CofE Primary School

  1.0 km away

• St. Thomas More Language College

  1.0 km away
• Westminster City School

  1.4 km away
• The Grey Coat Hospital

  1.8 km away

• Knightsbridge

  |

  400 m away
• Hyde Park Corner

  |

  400 m away
• Sloane Square

  |

  1.1 km away

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