$550 million. That is how much the world’s most expensive apartment reportedly sold for. It was purchased by Ukraine’s richest man, Rinat Akhmetov, who now owns the crown jewel of Monaco’s Mareterra district. The billionaire, worth about $7 billion, has acquired a real estate marvel inside the prestigious Le Renzo building. In true billionaire fashion, the 2,500-square-meter residence is spread across a staggering 21 rooms and comes with a private swimming pool, a jacuzzi, and at least eight parking spots. The waterfront property occupies pride of place in a district built on reclaimed land, inaugurated by Prince Albert II in 2024, and designed to attract the world’s ultra-rich.

The sale comfortably eclipses Ken Griffin’s long-standing apartment benchmark, nearly doubling the roughly $238 million paid for his New York penthouse. At $550 million for more than 2,500 square meters, the deal works out to roughly $221,000 per square meter, and that figure does not even include the lavish balconies and terraces. It is fair to say that a single square meter here costs more than a Bentley, which is why the apartment owned by this 59-year-old son of a coal miner sits in a stratosphere of its own, even by Monaco standards.

As for the location, Mareterra is not just a luxe new district but a bold slice of Monaco’s future. The address brings with it several advantages, from promenade culture and marine engineering to sheer prestige. Le Renzo includes 47 luxury apartments and is the only building in the development to bear the name of Pritzker Prize-winning architect Renzo Piano, who set new standards for luxury and environmental sustainability in Monaco with this project. The purchase also fits into Akhmetov’s broader pattern of acquiring landmark trophy properties.

He has been linked to the historic Villa Les Cèdres on the French Riviera and a penthouse in London’s One Hyde Park, showing that this Monaco buy is not an isolated indulgence but part of a larger lifestyle and investment play. Akhmetov’s holding company, System Capital Management, or SCM, confirmed to Bloomberg that it had made an acquisition in the development. With this purchase, the bar for the world’s most expensive flat has been raised to a level that may remain untouched for years to come.
