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Now on the market: the Mayfair mansion of Princess Diana’s step-grandmother Dame Barbara Cartland

The five-story property is on the market for £30 million

Liv Kelly
Written by
Liv Kelly
Contributing Writer
South Street, for sale by Sotheby’s International Realty
Photograph: Sotheby’s International Realty
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If the walls of this Mayfair mansion could talk, they’d definitely have some interesting tales. The five-storey London property was home to Dame Barbara Cartland, a world-famous romance writer who’s probably better known as Princess Diana’s step-grandmother, and it’s just gone up for sale. 

28 South Street is a six-bedroom property boasting bags of Edwardian features, and it’s tucked between Park Lane and Grosvenor Square. Real estate doesn’t get much more prime than that.  

According to the New York listing, the building has vast amounts of space on the lower and ground floors, meaning the reception rooms can host more than 100 people. Did someone say spacious house party?

What’s more, though the house is most known for belonging to Dame Barbara, it was also the birthplace of former UK Prime Minister Alec Douglas-Home.

The property also features a timber staircase, decorative ceilings and a lavish basement swimming pool, sauna and bar. Take a look at 28 South Street in all its opulent Edwardian glory. 

South Street, for sale by Sotheby’s International Realty
Photograph: Sotheby’s International Realty
South Street, for sale by Sotheby’s International Realty
Photograph: Sotheby’s International Realty
South Street, for sale by Sotheby’s International Realty
Photograph: Sotheby’s International Realty

The building’s quintessentially British history (and affiliation with Lady Di) is expected to make it pretty popular with American buyers, so you better snap it up quick to beat the competition. If you’ve got £30 million lying around, that is. You can find out more on the official listing here

Black marble and red furnishings not quite to your taste? At Time Out, we cover the most interesting places that hit the city’s market. Check out the Mayfair townhouse of Beatles manager Brian Epstein or Johnny Rotten’s rockstar home in Chelsea.

For those of us who haven’t got millions of pounds to splash out right now, why not have a read of our London Property hub, or take a look at the London postcodes where rent is rising the fastest

Did you see that this London retirement home is officially the UK’s best new building?

Listen to Time Out’s brilliant new podcast ‘Love Thy Neighbourhood’: episode 11 with Ania Magliano in Haggerston is out now.

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