What happens if a wheelchair bound tenant complained to the city that you weren't accessible? 

At their request, I modified the home for wheelchair accessibility, including widening doors, installing ramp, changing door knobs to door levers, and a major bathroom renovation including a huge wheel in shower ( nearly a wet room).I was able to raise the rent to amortize all the improvements during the term of the 6 year lease. 

She does walk around with a leg brace, a cane, and has a wheel chair.

So, I'd like to find a real estate agent who: 1) Is very familiar with Indianapolis (especially in and around downtown); 2) Is fine working with a client who is buying with a family member in mind; and 3) is disability-friendly, and understands that the top priority will be buying an investment home that is/can be easily made wheelchair accessible. 

They are the equivalent of a wheelchair or grab bar or blood sugar measuring equipment for a disabled person.

With this two-unit I expect to make the lower unit wheelchair accessible but the upper-level unit is better suited to able-bodied residents, as there is no elevator.

Many managers still request it however a service animal is identical to a wheel chair and law strictly prohibits the enforcement of verification.

How about wheelchair ramps and chairlifts on the stairs?

This was for wheelchair access.Both options require me moving the current vent and supply lines.

Ours requires 60 inches circumference for a wheel chair to have clearance to turn in.