One of the few finished portions of Brooklyn Bridge Park is getting hundreds of new neighbors.

The city yesterday began soliciting proposals from developers interested in building a 180-unit condo tower and a 225-room hotel by Pier 1 in Brooklyn Heights.

The development would take place on the former site of the Cold Storage Warehouse buildings, which the city plans to lease to a developer who’d build and operate the new structures.

The move comes two days after the city reached a deal for additional housing towers to be built within the park at two other sites, helping ensure enough revenues are generated so the entire 85-acre waterfront park project can be completed.

The new Pier 1 projects will include interior parking spaces and ground-floor public restrooms, replacing temporary trailer restrooms at the park.

Brooklyn Bridge Park has been a political hot potato since project planners announced in December 2004 that more than 1,200 luxury condos would have to be included to raise enough money to offset the park’s $16.1 million annual maintenance costs.

Only one high-rise offering 440 luxury units at Pier 5 has been built; another 780 units have been on hold because of the slumping economy.