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£24,500,000

Asking price

4 bed flat for sale Grosvenor Square, Mayfair, London, W1K

4 beds 5 baths Apartment

Leasehold

Added on 10/04/2026

About this property

Occupying a high floor within one of Mayfair's most impeccably serviced residential buildings, this Four Seasons-managed lateral apartment offers 3,317 sq ft of elegant, hotel-style living at the heart of Grosvenor Square. Designed for effortless comfort and privacy, it combines generous proportions and a thoughtful finish, making it particularly appealing to international buyers seeking a turnkey London base with full concierge support.

Property type: Apartment
Bedrooms: 4
Bathrooms: 5
Floor area: 3,317 sq ft
Tenure: Leasehold
Council tax band: G
Postcode: W1K 6LE
Listed: 10 Apr 2026

Key features

Turnkey
Highly Sought After Location
Light Infused

Floorplan

Price guide

This home

£7,386 / sq ft

Area average (sold)

£2,846 / sq ft

Price per area, sold homes nearby

£1,723 / sq ft

£7,386 / sq ft

£4,685 / sq ft

Lowest

This home

Highest

£7,386 per sq ft — above 9 in 10 recent sales in W1K (£1,723–£4,685, 10th–90th percentile, 42 sales over 24 months).

Lowest and highest are the 10th and 90th percentiles of 42 homes sold in W1K over the last 24 months. This home's figure uses its asking price. All sold £/sq ft in W1K →

Location

Grosvenor Square, Mayfair, London, W1K, W1K 6LE

Open map Street View

Sold prices in W1K 6LE

HM Land Registry sales in W1K 6LE. Floor areas from Energy Performance Certificates where matched.

Address	Type	Sold	Size	Size	£/sq ft	Price
Flat 3, 18, Grosvenor Square Flat / maisonette	Flat / maisonette	Oct 2021	3,315 sq ft £5,083/sq ft	3,315 sq ft	£5,083	£16,850,000
Flat 2, 18, Grosvenor Square Flat / maisonette · new build	Flat / maisonette · new build	Apr 2006	3,455 sq ft £352/sq ft	3,455 sq ft	£352	£1,214,518
Flat 3, 18, Grosvenor Square Flat / maisonette · new build	Flat / maisonette · new build	Apr 2006	3,315 sq ft £340/sq ft	3,315 sq ft	£340	£1,128,009