Tim Elmes

Chargers star Joey Bosa is finally spending some of the cash he got after signing his mega, $135 million contract last year … copping an insane waterfront mansion in Florida this month.

TMZ Sports has confirmed … the L.A. superstar just bought the crib in Fort Lauderdale — his childhood hometown — and the pad is amazing.

Pictures of the place, which was listed by realtor Tim Elmes, show it’s right on the water, with an open floor plan and a ton of windows to soak in the view.

The house also comes with a dock, a wet bar, a pool and a fire table … and it even features an elevator inside!!

Unclear what the final cost of the place was — but it was last listed at $6,995,000.

Of course, Bosa just inked a huge, new contract with the Chargers back in 2020 … so making the payments ain’t going to be too much of a problem.

Bosa, meanwhile, has been producing since the Bolts forked over the cash his way … he recorded 7.5 sacks in 10 games last year, and has 3.5 QB takedowns in 6 games so far this season.