Heating in a 3 Family

[Les Jean-Pierre]

Hi, I have a three family in Brooklyn and pay for the heat. Obviously would like to change this. The building has one furnace and one water heater. Is there a way to have three meters for each unit without having three separate furnaces/water heaters? I know the proper fix is to do the hard work and completely make everything separate but wanted to see if anyone has a perspective on this. Thanks