A reader writes in to ask: “Do you know what the construction on 15th street between 5th and 6th avenues (closer to 5th) is? Looks like an old wearhouse is being torn down. New condos?” Answers: Yep, the old warehouse is biting the dust, and some sort of residential building is on the way. The developers have filed plans with the DOB for a four-story, 22-unit building c/o the prolific Karl Fischer Architects (which, alas, does not have a rendering on its site). Any South Slopers have more info on this one, like whether it’s going to be a rental or condo? GMAP DOB P*Shark