Does that include utility service to the house, a driveway, septic and well? 

Cost segregation utilizes the MACRS approach.

In Chicago you request a CHA Burden sheet and that gross number minus utility allowance will be what you get in addition to making sure bedroom size is adequate.  

Utilize tools like BiggerPockets for resources and calculators, and consider creating a simple spreadsheet to track property details, budgets, and timelines.

And via the clustering we are utilizing green-space in a communal manner thus reducing foot-print of that BUT retaining such perception as each unit has walkout to what seems a BIG green space.

If the didn't do that then they have converted to LTR or MTR rentals at a steady monthly income and have the tenants take over the utilities which offsets the loss of more income.

@Alecia Loveless is correct--tenants need access 24/7 to their electric service panel, water and heat, assuming those are individual utilities for each unit. 

Out of that voucher amount, they will have a utility and appliance work sheet that provides a cost for each utility or appliance not provided by a landlord for each bedroom size.

I can only speak regarding structuring the deal as I have not utilized partners personally but it really can be anything that you want.

I’ve heard that this neighborhood doesn’t really have any problems from a social worker but outside areas aren’t good. 3/4 units are currently rented at $900 each, renters pay utilities.