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SW1X 9HL

William Street, Knightsbridge, London, SW1X, United Kingdom

4 Beds
4 Baths
348 m² Floor area
Type Flat
Listed 15 May 2026
Asking price £15,250,000
Price per m² £43,822 / m²

United Kingdom Sotheby’s International Realty is thrilled to present this exquisite four-bedroom apartment in Knightsbridge Gate. The Grade-II listed Edwardian building was built in 1902 and has recently been the subject of a total renovation. Now fitted with the highest quality, natural materials, including Vietnamese and Calacatta oro polished marble, rich oak, refurbished original timber sash windows and bronze ironmongery, the home successfully honours the grand legacy of the building, but has been updated to ensure ultimate comfort.

To ensure peace of mind there is a built-in intruder alarm and video intercom system. There is also central heating and cooling, underfloor heating and Lutron lighting. Internally, a rich palette of materials, colours and textures creates a feeling of serenity and a luxurious ambience.

The apartment features a large drawing room with multiple windows, flooding the space with natural light. The kitchen is fully equipped with Gaggenau appliances, ample built-in storage, and a sleek breakfast bar, finished in cosmic black granite. Situated next to it is the formal dining room that is perfect for those who love to entertain. The impressive principal bedroom has a generously proportioned dressing room and a private terrace. The additional three bedrooms each benefit from an en suite; there is also a laundry room with Miele appliances.

Located in one of the most sought-after areas in London, moments from Hyde Park, Harrods and Harvey Nichols as well as an abundance of restaurants, everything you need is practically on your doorstep.

How the asking price has moved

May 2026
£15,250,000
Listed at original asking price

William Street, Knightsbridge, London, SW1X, United Kingdom

This listing doesn't publish a floor area, so we can't 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 348 m². Updated daily.