I've purchased land with a mobile home and took the mobile home subject to.  

Avid reader on the subject.

Need a few units in same buildings and higher rents to cover expenses aka nice areas. 

I'd look at that as well as the Zoning Ordinance and Subdivision Ordinance, which every Pa township, borough or city has, or if they don't have those docs, they are covered by the county codes.

A few thoughts on the subject from someone who made a living doing this until the laws changed on the West Coast.Most folks in foreclosure go into deep denial.

They will try to cover that up by saying they have some minor role in the general partnership. 

This is the percentage of costs (purchase and rehab) covered by the loan.

Or maybe the units aren't equal and one rents for $2800 covering most of the cost of living there. 

A platform that updates their data daily or weekly is covering a staggering cost in order to provide that to the end user.

There are organizations that can provide the family with rental assistance; every municipality has one - and the assistance covers utilities as well.