Twenty Grosvenor Square luxury apartment building at 22 Grosvenor Square in Mayfair, London W1.

Twenty Grosvenor Square

Mayfair W1K
Mixed use

Key Details

20-21 Grosvenor Square, London W1K 6LE
Prices from
Use Classes


Twenty Grosvenor Square offers new luxury homes for sale from £18,000,000 in Mayfair, London W1.

Completed in 2020, the redevelopment added two storeys to the building to the designs of Squire & Partners architects. The Providence Court frontage and part of the building behind were demolished and rebuilt.

New Apartments For Sale
A collection of Four Seasons Residences includes 3-5 bedroom apartments. The apartments for sale are marketed by Savills.

New Apartments For Rent
For rental enquiries please send a message through the development website.

- 24-hour concierge
- Valet parking underground
- 25m pool
- Spa
- Gym
- Garden library
- Cinema room
- Courtyard garden & terrace
- Business centre and meeting room
- Games and function room
- Wine cellar
- Crèche
- Storage rooms

Main entrance is on North Audley Street.

The original building was erected as residential apartments in the 1930s but was then occupied as administration offices by the US Navy during the Second World War and remained in that use (Class B1) until late 2007, since then it was vacant until the development started.

2020 - Completion.
2016 November - Topping-out ceremony.

Neighbouring Buildings
W - Blakes Hotel Mayfair across North Audley Street at No. 22.
SE - 18 Grosvenor Square - adjoining building south east.
NE - 18 Providence Court - adjoining building north east.

Site & Location

Located on the western corner at the end of the buildings that make up the continuous north side of Grosvenor Square where it joins North Audley Street. To the north, it faces Providence Court and it, therefore, has three street frontages. The fourth side of the building forms a rear elevation to an internal courtyard shared with two neighbouring residential buildings at 18 Grosvenor Square and 18 Providence Court.


Bond Street Underground StationCentral, Jubilee
Selfridges390, 94, N137, N207, 113, 139, N113, 159, 7, 98, N7, N98


Main Contractor


News, events, milestones and offers from the new development
The prices at Twenty Grosvenor Square start at £17.5m for a four-bedroom apartment, reports Financial Times. Source: Presidents to residents: Mayfair’s new homes come with record price tags, Financial Times 8.08.2018
05/09/2018 06:54 by Buildington
Savills is now publicly marketing Twenty Grosvenor Square. The development is now known as the Four Season Residences because of the luxury amenities offered. 37 three to five bedroom apartments are available for sale, price on application.
10/10/2017 05:32 by Buildington
Finchatton is set to unveil Twenty Grosvenor Square early next year, says Financial Times. The 37 lateral apartments in the former HQ of the US navy in London are expected to cost from £4m to over £35m. City homes with green spaces by Lisa Freedman, How To Spend It, Financial Times 28.02.2026
29/02/2016 08:01 by Buildington


Information on this page is for guidance only and remains subject to change. Buildington does not sell or let this property. For more information about this property please register your interest on the original website or get in touch with the Connected Companies.