Carl Icahn is moving his financial empire to an unassuming office building that’s just five miles from his Miami mansion — and more than 1,000 miles from where the rest of his employees live now.

The Wall Street titan — who, as first reported by The Post, is moving his hedge fund Icahn Enterprises to Miami next spring whether his workers like it or not —plans to lease one-and-a-half floors at the top of a yet-to-be-constructed glass-encased office tower in a Miami suburb, The Post has learned.

The lease for the space at 16690 Collins Ave. in Sunny Isles Beach, which will overlook Biscayne Bay and is the only office tower in the area, still needs to be finalized, sources added.

Once 83-year-old Icahn moves, he will be less than fifteen minutes north of his beachfront mansion on a private island, also in Biscayne Bay — an area so secure and filled with rich people it’s been nicknamed the “Billionaire Bunker.”

Icahn’s neighbors on the private island get-away include singer Julio Iglesias, former Miami Dolphins Coach Don Shula and Eddie Lampert — who also famously moved his hedge fund from Greenwich, Conn, to Miami in 2012.

If Icahn were to commute to downtown Miami, by contrast, it would take 40 minutes by car.

As The Post reported earlier this month, Icahn has quietly informed the staff of his publicly traded investment firm that he’ll be closing his offices in New York City and White Plains on March 31 — and moving the whole shebang to Miami.

“After spending my entire career in New York, while I certainly do not wish to retire, I’ve decided that at this point in my life I’d like to enjoy a warmer climate and a more casual pace year-round,” he told his employees in a May letter.

More than half of Icahn’s 50-person staff decided to take the plunge and move to the Magic City, sources said.

Staffers were given until July 1 to decide whether they wanted to go with him or not. And while he offered a $50,000 “relocation benefit,” staffers who refused to pack their bags were told they wouldn’t get severance, The Post reported. They are getting close to a full year to look for a new job, however.

Icahn, whose name adorns Mt. Sinai’s School of Medicine and Icahn Stadium on Randall’s Island, appears to enjoy working close to home. In New York, he owns two penthouses in the West 53rd St. Museum Tower — a few blocks from his 5th Avenue headquarters. He’s known for walking to work.

The octogenarian investor — who buys stakes in companies and then agitates for changes to boost the stock — bought his 7-bedroom home in Miami’s exclusive Indian Creek Village Island in 1997. Zillow says the home, which boasts a pool and a dock, is worth $23.4 million.

The island boasts fewer than 40 properties, which encircle a private golf course. There’s a single entrance to the island, which is heavily guarded, and a private police patrol the island via boat and waterskis, according to Forbes.

Florida has become a hot spot for wealthy financiers looking to save on taxes, including Lampert — known for running Sears into bankruptcy — and hedge fund mogul David Tepper, who moved his NJ firm in 2016.

The Number of SEC registered investment advisors in Downtown Miami is up 95% from 42 to 82 from 2014 through 2018, according to the Miami Development Authority.

“Hedge funds and finance firms in places like New York, Chicago and California are feeling the burden of operating in high-tax states,” said the Miami Authority’s Nitin Motwani.