£5,500,000

Completed 2019
Built by Finchatton / Grosvenor. Homes in Westminster sold for a median £825,000 over the last year, £1,110 per sq ft; see house prices in Westminster.
Twenty Grosvenor Square is the first standalone Four Seasons branded residence in London, offering 37 ultra-prime homes with world-class amenities and hospitality services in the heart of Mayfair. Set in a landmark building overlooking Grosvenor Square, it combines timeless architecture with contemporary luxury.
Estate agents list one home for sale at Four Seasons Residences at Twenty Grosvenor Square. Agent listings do not say whether a home is new or a resale, so this may be either.
First sales only so far: 24 homes registered at a median £20,375,000 since 2006 (new-build sales register 6–12 months after completion).
| Address | Sold | Kind | Price |
|---|---|---|---|
| Apartment 3.05, 20, Grosvenor Square W1K 6US | Dec 2023 | Sale | £17,800,000 · £5369/sq ft |
| Apartment 4.02, 20, Grosvenor Square W1K 6US | Mar 2023 | Sale | £33,853,751 · £6179/sq ft |
| Apartment 2.01, 20, Grosvenor Square W1K 6US | Dec 2022 | Sale | £36,283,655 · £6421/sq ft |
| Apartment 0.04, 20, Grosvenor Square W1K 6US | Nov 2022 | Sale | £5,600,000 · £3912/sq ft |
| Apartment 1.05, 20, Grosvenor Square W1K 6US | Apr 2022 | Sale | £16,300,000 · £4933/sq ft |
| Apartment 4.05, 20, Grosvenor Square W1K 6US | Mar 2022 | Sale | £18,250,000 · £5596/sq ft |
| Apartment 2.03, 20, Grosvenor Square W1K 6US | Jan 2022 | New build | £19,950,000 · £5738/sq ft |
| Apartment 4.04, 20, Grosvenor Square W1K 6US | Jan 2022 | New build | £5,750,000 · £5507/sq ft |
All sold prices in Westminster →
Sales at the development's postcode and its listings' postcodes, as recorded by HM Land Registry; neighbouring addresses in the same postcode can be included.
Four Seasons Residences at Twenty Grosvenor Square is a Finchatton / Grosvenor development in Mayfair, London.
Prices at Four Seasons Residences at Twenty Grosvenor Square start from around £5,500,000 (the lowest asking price of the new homes estate agents are listing here, so treat it as a guide). One home is listed by estate agents at the scheme right now, which may be new or resale.
Four Seasons Residences at Twenty Grosvenor Square: completed 2019. Use the enquiry button to check current availability with Finchatton / Grosvenor.
HM Land Registry has registered 24 first sales at Four Seasons Residences at Twenty Grosvenor Square at a median of £20,375,000 since 2006. New-build sales appear in the register six to twelve months after completion, so this count grows over time. That is 400% above the Westminster median of £1,110 per square foot.
The median sold price in Westminster was £825,000 over the last 12 months (1,761 sales, −8.3% on the year before), or £1,110 per square foot, from HM Land Registry data. The house prices in Westminster page has the trend, prices by property type and every street.
20 Grosvenor Square, Mayfair, London, W1K 6LE
Within half a mile: 587 restaurants and cafes, 29 pubs and bars, 51 takeaways.
Straight-line distances; actual routes will be longer. Stations from NaPTAN, with their lines powered by TfL Open Data; schools from the Department for Education register, with the latest Ofsted signal; supermarkets from Geolytix Retail Points; places to eat from the Food Standards Agency's register of food businesses.
The Westminster neighbourhood around this development.
Sources: HM Land Registry price paid data, Police.uk, Historic England, ONS Census 2021, Ofcom Connected Nations, Environment Agency. Planning offices.
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Details last confirmed on 19 October 2026.