I am working on a project that has three floors of both residential and commercial spaces. The spaces are to be sold and not leased. Currently we are planning on providing separate meters from the utility company for each space; however, the question has arrised if we can provide only (2) meters for the entire building, (1) for residential and (1) for commercial. Then the building association would charge a fee to the owners to pay the electrical bill. The questions has also been asked if we could use an E-mon D-mon metering system to figure out how much to charge each owner. My overall question is are there any codes or utility requirements that would require each individual owner to have their own utility meter?