Flat 3, 18, Grosvenor Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 19 Mar 2024.

The property is connected to mains gas and has partial double glazing. It is heated using Boiler and underfloor heating, mains gas.

Flat 3, 18, Grosvenor Square last changed hands on 28th October 2021, selling for £16,850,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has dropped by 28.7% since October 2021.

• Sold Oct 2021£16,850,000
• Sold Apr 2006£1,128,009

Land Registry records and our Estate Agent network show 3 sales of comparable properties within 320 metres of Flat 3, 18, Grosvenor Square across the last 2 years.

Most recently, Flat 15, 15, Grosvenor Square, London, W1K 6LD, a leasehold flat, sold at £19,750,000 on the 4th September 2024.

Read more about house prices in W1.

• Sold Sep 2024£19,750,000 | 4 Bed FlatFlat 15, 15, Grosvenor Square, London, W1K 6LDFlat 15, 15, Grosvenor Square, London, W1K 6LD
• Sold Dec 2023£17,800,000 | 4 Bed FlatApartment 3.05, 20, Grosvenor Square, London, W1K 6USApartment 3.05, 20, Grosvenor Square, London, W1K 6US
• Sold Apr 2022£16,300,000 | 4 Bed FlatApartment 1.05, 20, Grosvenor Square, London, W1K 6USApartment 1.05, 20, Grosvenor Square, London, W1K 6US

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

Agents in our network have reported 1 letting within 320 metres of Flat 3, 18, Grosvenor Square across the last 2 years.

The newest of these is Apartment 2.02, 65, Duke Street, London, W1K 5NX, a leasehold flat let by Maplewood Property in June 2025.

• 
  Let agreed Jun 2025£ Undisclosed | 3 Bed FlatApartment 2.02, 65, Duke Street, London, W1K 5NXApartment 2.02, 65, Duke Street, London, W1K 5NX

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

Our analysis of the public data ranks Flat 3, 18, Grosvenor Square as the 78th largest and the 56th most expensive of the 273 addresses on Grosvenor Square, London, W1.

Against the W1 postcode district average, it is £14.993m more expensive than the typical property.

• 400

  m

  St George's Hanover Square CofE Primary School
• 700

  m

  St Vincent's Catholic Primary School
• 1.0

  km

  Hampden Gurney CofE Primary School

• 1.1

  km

  The St Marylebone CofE School
• 1.8

  km

  Westminster City School
• 1.9

  km

  Marylebone Boys' School

• 300

  m

  Bond Street (Elizabeth line)
• 300

  m

  Bond Street
• 500

  m

  Marble Arch

Environment Agency data suggests this area has a very low risk of flooding.