How would someone charge Light and Water on this one?

[Carlos C.]

Hi everyone! I have a duplex (3/2 each side) but I'm gonna reduce it to 2/1 each side, and build a studio with kitchen on each side. Normally those studios are called an "Efficiency" here, and they include all utilities, and normally that's easy because the owner lives in the big side, and just pays for everything, but in my case, I'll have tenants on both side.

I doubt that whoever builds those units for me will be able to have separate light and water meters for the 2 studios. Has someone ever have to deal with something like this?

Thanks!