On the heels of Howard Milstein’s sale of his Seaport parking lot to Howard Hughes Corp. for $180 million, as first reported by The Post’s Steve Cuozzo, two brick, multifamily buildings catty-corner across the cobblestone Water Street are expected to sell for $30 million.

The six-story 257 Water St. (with an elevator) and four-story 23 Peck Slip have 20 free-market apartments between them plus two restaurants and 7,000 square feet of air rights.

The restaurants are MarkJoseph Steakhouse on Water Street and Acqua on the northeast corner of the intersection of Water and Peck.

Avison Young’s multifamily team of Brandon Polakoff, Phil Bowman, Charles Kingsley and James Nelson, the new head of tri-state sales, is marketing the property, also known as the Stove Factory Lofts.

Located in the historic district, the big apartments are some 1,500 square feet in a neighborhood that is becoming more desirable, according to Nelson.