I'm a commercial RE broker in New York, I'm also an aspiring investor looking to invest in commercial properties with medical tenants. 

Resale of the home will be extremely difficult and reduce the property value by tens of thousands. 

Tenant paid water would reduce your overhead costs and it seems like it would fit right into the overall cost profile for the tenants if their rent is so far under market.Jim.

My housing cost, while I live there, will be reduced once I do this.

I have about 8-9 feet of ceiling height and I'm not sure if I can put a barrier 6inches to a foot to reduce the noise transfer.  

Options: ideally increase your income and reduce your debt.  

I think that since I will be constructing the houses, it will be less time and cost to put the solar panels up on the houses or ground mount them in community spaces and give buyers the option of buying their solar array outright or paying for the solar energy produced at a reduced cost. 

Elderly person, someone with special medical needs that would warrant extra concern and faster response ??

@Ray Agosto, years ago I started from almost no credit, bundled with some delinquent medical bills, and worked my way up to a 700+ score relatively quickly (from the low 500s).

The option consideration/ option fee does reduce the purchase price @Tina Marie when exercised.