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. 

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

Track everything you do and view that regularly so you can tell what you can do to earn more income and reduce expenses.

Individualized assessments shall establish why new open space is unnecessary in the area because of adequate existing open space or why the fees should be reduced because of lower open space costs in the area than those estimated in Section 16-18-040 hereof.

They will have a management fee which will reduce your overall returns - but they provide a service, so it depends on what your objectives are.