I am not sure there would be enough margin in this to support your goal.We know people are not lining up to accept section 8 so you could build housing targeting that group in some locations. 

If it is the same, there may be a tiny, marginal benefit* that is not worth the extra confusion.  

If you already have that where you live, why put those profits at risk?

the insurance companies are not charities; they deserve to make reasonable profit for providing the insurance.  

I've been corresponding with a non profit in CA that is doing work on ADU regulations, etc.

The Justice Department’s acting assistant attorney general, Doha Mekki, put it bluntly: this case is about ending the practice of “putting profits over people.”

And even if they do, they can change that at a monthly BOD meeting.Plus, since you are going to have to hire out the 1) Property Mgmt, 2) Repairs and maintenance, and 3) cleaning, your profit margin is going to be very slim, particualry in a condo (which will have a much leaner net profit than a basic house.Not trying to be a downer, but I'd suggest looking at another avenue for REI. 

I was wondering if a manufactured home would be an economical and profitable solution. 

With over 20 years of experience as a mortgage expert and real estate investment veteran, we leverage our mortgage company to secure below-market financing for our clients, ensuring maximum value and profitability.

I do this at least quarterly for some of my clients and they like being able to see the profit and loss reports.