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18 Grosvenor Square, Mayfair, London, W1K

PROPERTY TYPE

Apartment

BEDROOMS

5

BATHROOMS

5

SIZE

4,351 sq ft

404 sq m

Describes how you own a property. There are different types of tenure - freehold, leasehold, and commonhold.Read more about tenure in our glossary page.

Key features

  • 24 Hour porter
  • Built in Kitchen Appliances
  • Terrace
  • Penthouse
  • Residents' Permit Parking
  • Access to Communal Gardens

Description

Occupying the sixth and seventh floors of an imposing red-brick building on Grosvenor Square, this five-bedroom penthouse presents a rare opportunity to acquire and reimagine one of Mayfair’s most remarkable lateral residences. Extending to approximately 4,351 sq ft, with a south-facing roof terrace of around 722 sq ft overlooking the square’s gardens, the apartment is offered for sale by private auction and requires comprehensive renovation throughout.



Direct lift access opens into a private entrance lobby on the sixth floor, where a sequence of expansive reception and entertaining spaces are arranged beneath high ceilings and period detailing.



Two generous reception rooms sit at the heart of the plan, alongside a separate kitchen and dining room. The principal bedroom suite occupies a substantial footprint and includes an ensuite bathroom and dressing space, while three further bedrooms are also arranged across this level, alongside a utility room and extensive ancillary storage.



A sweeping internal staircase rises to the seventh floor, where an additional reception room opens directly onto the terrace. Framed by uninterrupted rooftop views across Mayfair and the gardens below, the terrace offers an unusually large outdoor footprint for central London. A fifth bedroom suite, study and powder room complete the upper floor, while a commercial dumbwaiter connects directly to the kitchen below.



The apartment forms part of a well-managed building with 24-hour porterage, additional service lift access and a separate storage room on the lower ground floor. Situated within the Mayfair Conservation Area but not listed, the property offers considerable flexibility for refurbishment and reconfiguration, subject to the necessary consents.



Grosvenor Square remains one of London’s most distinguished addresses and has undergone a significant transformation in recent years. The former US Embassy has been restored by Sir David Chipperfield as The Chancery Rosewood, while neighbouring developments, including Twenty Grosvenor Square and One Grosvenor Square, have further cemented the square’s position at the centre of Mayfair’s evolving super-prime landscape. Hyde Park is approximately 0.3 miles away, while Bond Street Underground station is approximately 0.2 miles away, providing access to the Central, Jubilee and Elizabeth lines.
COUNCIL TAXA payment made to your local authority in order to pay for local services like schools, libraries, and refuse collection. The amount you pay depends on the value of the property.Read more about council Tax in our glossary page.
Band: H
PARKINGDetails of how and where vehicles can be parked, and any associated costs.Read more about parking in our glossary page.
Yes
GARDENA property has access to an outdoor space, which could be private or shared.
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ACCESSIBILITYHow a property has been adapted to meet the needs of vulnerable or disabled individuals.Read more about accessibility in our glossary page.
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18 Grosvenor Square, Mayfair, London, W1K

Approximate location

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Affordability

Monthly repayments£57,668
Property: £ 11,500,000
Deposit: £ 1,150,000
Interest rate: 5.33%
Term: 30 years
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About United Kingdom Sotheby's International Realty, Mayfair

48 Conduit Street, Mayfair, London, W1S 2YR
Industry affiliations:

At UK Sotheby’s International Realty, we bring together extensive local knowledge and an international reach that spans 84 countries and over 1,100 offices worldwide. Whether you’re looking to buy or sell in London, the Cotswolds or Surrey, our team offers thoughtful, experienced guidance every step of the way.

What sets us apart? We believe property is personal. Our advisors average 16 years in the industry, and it shows. We listen carefully, act with discretion, and approach every instruction with care and attention to detail. We give just honest, expert advice and have a genuine commitment to getting things right.

With roots in the prestigious Sotheby’s auction house, we appreciate the value of history, design, and incredible service. From country estates to new developments, we know about homes that tell a story and work hard to ensure yours is shared with the right audience.

If you’re after a considered approach and a team that knows both the market and what matters most to you, please don’t hesitate to contact us.

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Disclaimer - Property reference UK-S-07731. The information displayed about this property comprises a property advertisement. Rightmove.co.uk makes no warranty as to the accuracy or completeness of the advertisement or any linked or associated information, and Rightmove has no control over the content. This property advertisement does not constitute property particulars. The information is provided and maintained by United Kingdom Sotheby's International Realty, Mayfair. Please contact the selling agent or developer directly to obtain any information which may be available under the terms of The Energy Performance of Buildings (Certificates and Inspections) (England and Wales) Regulations 2007 or the Home Report if in relation to a residential property in Scotland.

Auction Fees: The purchase of this property may include associated fees not listed here, as it is to be sold via auction. To find out more about the fees associated with this property please call United Kingdom Sotheby's International Realty, Mayfair on 020 3835 2136.

*Guide Price: An indication of a seller's minimum expectation at auction and given as a “Guide Price” or a range of “Guide Prices”. This is not necessarily the figure a property will sell for and is subject to change prior to the auction.

Reserve Price: Each auction property will be subject to a “Reserve Price” below which the property cannot be sold at auction. Normally the “Reserve Price” will be set within the range of “Guide Prices” or no more than 10% above a single “Guide Price.”

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