The entire 51st floor of the 52-story Ritz Carlton Residences at Sunny Isles Beach is currently under contract. Construction will begin on the condo building in 2016, with a projected completion date of 2018.
Though it was originally being sold as two separate residences, the buyer - who is a "successful entrepreneur," the developer told the Wall Street Journal - elected to combine them into a full-floor penthouse.
Another full-floor penthouse one floor up is still on the market for $30 million.