If all fails, please consider reaching out to those representing the seller online and see what company/individual is currently managing the units prior to the sales transaction.... this could give you some great insight. 

That will help you know if this transaction is doable or not for you.  

Perhaps the planning and zoning department? 

I am very familiar with genes program however in the state of Virginia becoming an assisted living facility is asking to be harassed by the department of social services. so I do not want to provide care for seniors.

@Roli E. maybe, but they could also raise concerns about insider transactions as fraudulent transfer of assets.

Eventually, they own 50, 100, or more rental units.BUT...even though I built several homes for customers my brain can't handle looking for lots and then dealing with all the blueprints, dealing with the building departments, contractors and sometimes it takes several years to complete a project from the time you find a lot.

Then you can refinance after the rehab without adding additional transactional costs for your FIL. 

Several calls to their "support" department (and I use that term as loosely as i possibly can) yielded no satisfactory results. 

Please keep in mind that you are not selling candy bars or an Xbox on Craigslist or something, you are transacting in real estate that comes with a lot of liability.

If the stucco is good and the shower can be fixed affordable, I think I would hold and avoid transaction costs.