I don't see - apart from metered utilities that you pay - why a 2nd person warrants higher rent, apart from maybe slightly higher wear and tear as there are now 2 people instead of only one.

I have a similar problem ,  tenant was stealing electricty , they swapped out the smart meter , for a regular meter . ( idiots didnt realize the smart meter sends info back in real time )   So I now have a new tenant ready to sign the lease , but BGE wants to see the lease , BEFORE they turn on the electric . 

Is it possible ( Do units have separate water meters?)

At least this girl has a sister who wants her and is trying to make that happen.Regarding the water meter, we looked into that at last turnover, her house, pipes, plumbing would not easily allow for installation of such, though it is legal in MA, it is pricey - her plumber told her it was not a workable solution.

They don't clean your clothes worth sh**.You need water to clean clothes.You need water to clean toilets.If the issue is the water bill, then meter the tenants and let them pay the water bill. 

We did include utilities, only because the old 26 unit converted building was not separately metered and the owner didn't want to deal with doing it.We just did month to month agreements, so we could get rid of a problem quickly, if necessary.  

The heater was fine; the problem was the gas meter was locked because, despite providing them information on how to set up gas service two weeks before they moved in, they failed to do this.Gail

The building I managed was old and did not have separate meters, so electricity and gas was included in the rent. 

I don't include power in any of my units but do include water in the multis (in my city we can only get 1 water meter per property). 

For the MF we recently installed a meter to track and decrease use.