ADA issues grandfathered in or do you need to fix.  

This could mean apropriate fire suppression throughout the building, potentially adding elevator, full ADA compliance, etc.  

I have a contract on a 14 unit, 9 Baths, community kitchen/bath, ADA compliant,  single room occupancy.

See number 2Sometimes defining your objectives will help you answer your own questions.I look ar it as define your goals and make a plan to execute them, those may change over time & that's good because you're evolving ad a business owner.Dont forget your holding costs, taxes, builders risk insurance, utilities, security etc.Remember to manage everyone & be on site as much as possible.

For all my rentals I buy this one at Lowe's:AquaSource Henshaw White WaterSense Elongated Chair Height 2-Piece Toilet 12-in Rough-In Size (ADA Compliant)Item #98923Model #T802The price is right, it lowers the water bill and the tenants like it. 

The Americans with Disabilities Act (ADA) enforces elevators in properties in the following criteria: ...

If they have not confirmed an hour prior to their appointment, I send this text to their phone (which was required as part of their contact information I required in the response to my ad):As I had requested in my email, you have not yet confirmed your apartment showing for this evening, scheduled for 7:00pm.

Make your ad as thorough as possible, including what the requirements are.

And to think I was in a licensing class a few months ago where they mentioned that hoarders are now protected under ADA.

You may need to have a sprinkler system installed/ ADA compliance with wheelchair ramps, handrails, larger walk-in showers, wider doors and hallways, more fire extinguishers, etc.