A riverfront property adjacent to Penn Treaty Park in Fishtown, near SugarHouse Casino, is on the market along with approvals for a 19-townhouse development at the site.

Property-owner Penn Treaty Views LLC is seeking $6.5 million for the 1.5-acre strip of land between North Delaware Avenue and the Delaware River near Marlborough Street, spokesman George Polgar said in an email late last week.

Penn Treaty Views acquired the property at 1143-51 N. Delaware Ave. at auction in July for about $4 million, according to records filed with the city. It is selling the land along with plans commissioned from Philadelphia-based Abitare Design Studio for a row of four-story townhouses, most of them 3,800-square-feet, with two-car garages, elevators and roof decks, Polgar said.

A public easement exists for the property's waterfront, which would make up a small part of the riverfront trail planned between Penn Treaty Park and SugarHouse.

Philadelphia officials recently seized control of a waterside sliver of the Henry Stewart Co. wire rope business' property immediately to the north for use in the cycling-and-walking trail.

Penn Treaty Views is a partnership involving Northern Liberties-based developer Shovel Ready Projects LLC and Philadelphia-area music-venue impresarios Allen and Adam Spivak, Polgar said.

Shovel Ready also is marketing a nearby pier where the never-built Trump Tower Philadelphia was planned, with designs for a townhouse development at that site as well.