I have thought about selling it on numerous occasions, but I have decided to keep it.

Forward looking projections are always a risk gamble so putting weight on it too much can be potentially problematic.What to consider in splits, fees hurdles is who (what parties) has what at risk when you run a Stress Test / Sensitivity Analysis.

There are numerous groups catered toward housing for various traveling professions.

I think it's all preference at the end of the day, but I would not advise to buy a property in hopes of appreciation, as that is just gambling.

The process of probate must satisfy the court that such matters are being addressed.There are numerous case studies on the subject, as each case has it's own  peculiarities.  

Cory and Victoria Gamble managed the rehab.

That said, there is supposedly a huge influx of supply coming on the market over the next few years due to numerous large development projects.

You can do this in numerous ways for off-market properties. 

And banking or counting on appreciation would be more like gambling, you don't know for sure what is going to happen.

Most importantly, above anything else, do not gamble your parents life savings away.They have achieved an impressive milestone with a paid off house.