Developer Harry Macklowe may have moved on to his new wife, Patricia Landeau, but he has some unfinished business with his ex Linda.

The former spouses, embroiled in a contentious split, still own a stunning East Hampton property on Georgica Pond.

The home is about to officially hit the market asking $21 million with Corcoran listing broker Tim Davis.

The listing was first reported by Behind the Hedges.

The modern-style house dates to the 1980s and was updated a few years ago.

It sits on 2.3 acres and comes with 430 feet of frontage on the pond.

Macklowe has since bought another East Hampton property for $10.35 million at 64 West End Road.