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W1K 4BN

Grosvenor Square, Mayfair, London, W1K

£36,000,000
Not valued
5 Beds
5 Baths
551 m² Floor area
Type Flat
Listed 11 Sep 2026
Price per m² £65,336 / m²

This landmark property in the historic West Wing of One Grosvenor Square, this 5,300 sq ft home pairs grand lateral space with an atmosphere of total privacy. Recently refurbished to an exceptional standard, every room has been designed with a level of detail more often associated with a private members’ club than a home. The result is one of the square’s most incredible interiors, combining classical proportions with a modern palette of marble, bronze and bespoke cabinetry throughout.



The apartment unfolds across the ground and lower ground floors, connected by a sweeping internal staircase and served by a private lift. The ground floor begins with an impressive entrance hall that sets the tone for the scale to come. From here, a vast reception room stretches across the width of the building, arranged for both formal entertaining and quieter evenings at home. High ceilings, tall windows and immaculate joinery define the space, complemented by a dining area framed by richly dressed wall panels.



The principal suite sits quietly on this level, arranged as a private wing overlooking the square. It includes a generous bedroom, a large dressing room with extensive wardrobes, and a bathroom finished in marble with twin basins, a walk-in shower and a deep bathtub.



To the rear, the kitchen has been designed for both daily use and catered events, with Gaggenau appliances, a long central island and textured stone worktops. A family room sits alongside it, offering a more relaxed setting with bespoke media cabinetry and views into a sheltered patio.



The lower ground floor holds the remaining bedrooms, three with their own bathroom and each with a distinct design identity. The standout suite has a dressing room, presented in a lighter palette to the principal and access to the terrace that wrapsaround this whole level. All bathrooms feature detailed stonework, soft lighting and brass or nickel fittings. A gym, treatment room and extensive storage vaults complete this level, along with direct lift access back to the upper floor.



A private terrace runs along the rear of the building, creating a rare outdoor retreat in the heart of Mayfair with space for dining and planting. Residents of One Grosvenor Square benefit from 24-hour concierge, secure parking and access to world-class amenities.



Grosvenor Square remains one of London’s most prestigious addresses, moments from Mount Street and the boutiques of the Grosvenor Estate. The area is entering a new chapter, shaped by the transformation of the former US Embassy into the Rosewood hotel. The combination of heritage architecture, exceptional privacy and a growing collection of destination restaurants continues to make this one of London’s most admired locations.

How the asking price has moved

Sep 2026
£36,000,000
Listed at original asking price

Prices, costs and transport nearby

What homes within 400 m sold for since Nov 2023, by type. Source: HM Land Registry.

Type Median Middle 80%
Flat This home
Median
52 sales
Terraced
Median
4 sales
Semi-Detached
Median
1 sale
Detached
Median
1 sale

Most recent sales

Address Sold price Date Type
5A MOUNT STREET, W1K 3NE £6,400,000 Jun 2026 Flat
Flat 6, 17, 17 THREE KINGS YARD, W1K 4JT £3,950,000 Jun 2026 Flat
9 MOUNT ROW, W1K 3RG £10,300,000 Nov 2025 Terraced
Flat 6, 21, 21 DAVIES STREET, W1K 3DE £5,250,000 Jun 2025 Flat
Flat 9, 47, 47 GROSVENOR SQUARE, W1K 2HS £5,750,000 May 2025 Flat
Flat 9, CLARIDGE HOUSE, 32 DAVIES STREET, W1K 4ND £3,400,000 Dec 2024 Flat
Flat 11, CLARIDGE HOUSE, 32 DAVIES STREET, W1K 4ND £4,500,000 Dec 2024 Flat
Flat 3, 4, 4 MOUNT STREET, W1K 3ND £5,347,500 Nov 2024 Flat
Flat 6, 5, 5 GROSVENOR SQUARE, W1K 4AF £9,150,000 Oct 2024 Flat
Flat 15, 15, 15 GROSVENOR SQUARE, W1K 6LD £19,750,000 Sep 2024 Flat
Flat 11, 47, 47 GROSVENOR SQUARE, W1K 2HS £7,850,000 Aug 2024 Flat
Flat 1, 11, 11 MOUNT STREET, W1K 2RB £12,000,000 Aug 2024 Flat
Flat 3, THE MANOR, 10 DAVIES STREET, W1K 3DU £6,900,000 Aug 2024 Flat
Flat B, 87, 87 DUKE STREET, W1K 5PQ £1,170,800 Mar 2024 Flat
Flat 3, 17, 17 GROSVENOR SQUARE, W1K 6LB £6,600,000 Mar 2024 Flat
Source: HM Land Registry · within 200 m · most recent first

Grosvenor Square, Mayfair, London, W1K

We don't have enough nearby Land Registry sales matched to EPC floor-area data for this postcode and property type to calculate a fair price estimate. All other details are still available.

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About this valuation

Fair price calculated from HM Land Registry sold prices in the same postcode area, adjusted by the UK House Price Index, and multiplied by the EPC-declared floor area of 551 m². Updated daily.

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