Hey David -
So what I’m curious about is are there any pros that outweigh the cons on going back with wide interior doors and such?
I understand your concerns about extra space the 36" doors consume. On the flip side, it makes the house feel "open", makes the doors usable for all people (able-bodied vs physically impaired) and activities (stroller, moving furniture). If you're doing the work yourself and don't mind extra work, consider pocket door or barn style when space is available.
What else would need to be done to call it handicap accessible if I did stay with that size and would it be a more sought after rental?
"Accessible" is a relative term. What is considered accessible for someone in a wheelchair is different compared to someone with a prosthetic on their leg. If you attempt to implement the ADA, you will quickly forego that idea once you spend a few minutes reviewing the guidelines. Also, the ADA does not apply to residential housing unless you're using federal funds and even in those instances, you can get variances for certain requirements.
What you really want to focus on is universal design if you plan on remodeling with accessibility in mind. Read this link on Ron Mace. I incorporate universal design characteristics all the time in my rehabs regardless of the intended users. For example, if I'm pouring a sidewalk to a front door with 1-2 steps, I slope the sidewalk to the landing and backfill to the top of the concrete resulting in a natural sloping sidewalk. No steps, no railings, looks natural, 100% accessible without the look, maintenance free, etc. This is universal design.
In terms of marketing the rental, the first stop is income restricted/section 8. Louisiana has a Medicaid Waiver program with individuals who have a physical disability looking for rentals. You probably want to start with the Residential Options Waiver.
If you want to leave the income restricted category and discuss fair market rent tenants, there are no rules or hoops to jump through. Just you, your time, how much "accessibility" you want to incorporate, and your rental plan. At minimum, you want to incorporate visitability. If you wanted to keep those features in the house and rehab the rest of the house traditional, you'd still be at the top of most rental lists with these baseline features. If its not too much trouble, keep a full bath and bed on the main level and you're home free.
I spend my professional life working nationally on residential accessibility so if you want to reach out, please send an IM.