Owning a home inside one of New York City’s most recognizable landmarks is now officially possible. The long-awaited conversion of the Flatiron Building is finally revealing its prices. Developers have filed plans outlining 38 luxury residences with a projected sellout of around $375 million. The first 18 units released range from just under $11 million for a 3,000-square-foot (280 m²) apartment to $50 million for a 7,400-square-foot (687 m²) duplex.

A spectacular ...