Is that "radiant heating under the tiled floor" an option for the buyers? like an upgrade? what's the price of that?I don't think the foundation was the hardest part since they just used pilons. I have a place on the 4th floor of the podium. Last week I asked about putting radiant heating under the tiled floors and was told that the tiles were already down. I also noticed when I drove by yesterday that the drywall is already up on the first couple of floors - couldn't see the top floors.