I've been looking into sub-metering a SFH home with a mother-in-law suite and experiencing difficulties regarding zoning and the utilities companies. It's led me to discover home monitoring systems like Eyedro (for electricity) and Flo (for water), where apparently you can track usage and figure out the consumption for a separate unit like a mother-in-law suite. Does anyone have any experience with these types of systems? I was thinking about keeping the utilities bill in my name, and then calculating and billing each unit whatever the electric/water bill would be for them.