I am assuming making it ADA compliant (wheelchair ramps, etc.) would be a prerequisite. 

I can only work online nowadays because I'm confined to a wheelchair. 

I guess at this level he will make money selling a hat to a headless person or a pair of running hi-tech pair of shoes to a person in a wheel chair. 

Due to my health, I had to trade my boots on the ground for a wheelchair.

Whatever you do, don't discriminate against someone who has an obvious disability (blind, in a wheelchair, etc.)  

Tasks performed can include, among other things, pulling a wheelchair, retrieving dropped items, alerting a person to a sound, reminding a person to take medication, or pressing an elevator button.Emotional support animals, comfort animals, and therapy dogs are not service animals under Title II and Title III of the ADA.

At least partially, but the bath could have a roll-in shower, handles, sans the turn radios for a wheel chair unless I open the door to the living room. 

I am looking for help building a wheelchair ramp for a family member.

Im pretty familiar with home wheelchair accessiblility and how the business operates.

Turning the emotional support animal tenant away for this reason is the same as not building a ramp to a second floor apartment because the tenant is in a wheel chair.