HM Land Registry records the plot of land for 20, William Mews as measuring 33 m².

That makes it the 13th largest plot in the postcode, where 14 of the 20 other houses have recorded plot data.

Over the past 2 years 557 properties have sold within 300 metres of 20, William Mews, per the Land Registry and our network of Estate Agents.

The latest, on the 24th January 2018, was 25, William Mews, London, SW1X 9HF, a freehold house which sold for £3,787,500.

Read more about house prices in SW1.

• Sold Jan 2018£3,787,500 | 3 Bed House25, William Mews, London, SW1X 9HF25, William Mews, London, SW1X 9HF
• Sold Nov 2009£1,650,000 | 4 Bed House24, William Mews, London, SW1X 9HF24, William Mews, London, SW1X 9HF
• Sold Apr 2007£1,850,000 | 3 Bed House18, William Mews, London, SW1X 9HF18, William Mews, London, SW1X 9HF

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

Over the past 2 years our Estate Agent network has recorded 1 let within 300 metres of 20, William Mews.

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

• 
  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.

• Holy Trinity CofE Primary School

  800 m away
• St Peter's Eaton Square CofE Primary School

  900 m away
• St Joseph's Catholic Primary School

  900 m away

• St. Thomas More Language College

  900 m away
• Westminster City School

  1.3 km away
• The Grey Coat Hospital

  1.7 km away

• Knightsbridge

  |

  300 m away
• Hyde Park Corner

  |

  400 m away
• Sloane Square

  |

  900 m away

The flood risk here is rated Very Low, based on Environment Agency data.