Has anyone sub-metered a low income multi-family in Massachusetts?

[James Loisou]

I am looking at buying a deed restricted low income multi-family here in Massachusetts. Currently it has separate electric, but the water and gas heat is not separate and is included in the rent. Since the maxumum rent for each unit is mandated, I was considering further separating the utilities from the rent. As I understand it, the low income renter is still entitled to a small allowance for utilities.

Has anybody had success sub-metering the gas and water for each unit and are there any possible pitfalls you are aware of when doing this to a deed restricted low income multi family?   Thank you. I appreciate it.