@Doug Karkow thought I would jump into give my input as I have actual experience with this since I own rentals in IA and MN as well as a submetering company. Lower rent rates and submetering or RUBS really is not an issue, most do not even ask what utilities cost per month, they look at base rent, as you mentioned. The issue I have seen with lower end units with submetering is it is just one more payment they have to make and that you or another company has to collect. So, just as it is already with tenants, you pick a bad one and they will not pay, be late, never pay, make up excuses, etc. Lower end rentals, with my experience in submetering, just adds to collecting another payment. The flip side is when you do submeter these units the tenants are held responsible for the water and leaks are reported, they do not waste water, etc. Your water bill for your entire complex will come down significantly the first month you install water meters and pass the bill back to the tenants.