This building sold at the end of 2012 for $56 million. The new owner could renovate the nine existing residential lofts and potentially convert the 16 commercial spaces into luxury condos.

Developer Property Markets Group bought two Hunters Point lots at the end of the year for $37 million and will build a 347,000 square foot rental development there. The project will have 410 units, a 110-unit loft and a 300-unit tower.

Toll Brothers purchased the lot at 78-86 King Street with potential plans for a luxury condo. (There's a 40,000-square-foot building on the site now, with another 160,000 square feet of air rights.) But the plans depend on the outcome of the Hudson Square rezoning proposal.

This 13-story rental building sold in November to building manager Stonehenge. Renovations could merely raise rents—or the building could go condo.

Sixty-one percent of the units in this building are rent-regulated, according to the Post, but it sold for $47 million in December to a buyer who recognized the "upside potential." The building has 3,500 square feet of unused air rights, so penthouse upgrades ahoy!

The Naftali Group picked up this building at the end of 2012 for an unusually low $37 million. The developer will put another $1 million into renovations but plans to keep the building rental for the moment.