Soho’s 84 Mercer St. is home to Meg Ryan, who purchased her unit a few years ago from Hank Azaria for $8 million.

Now there’s another pad up for grabs in the 19-unit cast-iron building.

The space needs work — but it’s the top floor, with penthouse potential — and it comes with its own entrance at 515 Broadway.

It totals 4,330 square feet and is on the market for $6.25 million.

The listing brokers are Edward Hickey, Elise Gold Flangos and Jack Wagner, of Compass.