Another day of record coronavirus cases and hospitalizations and several countries, states, and localities responding with activity restrictions seems to have served as a reminder of that.

This house would also serve as a retirement home for my Grandparents and sprouting for future family. 

Unpopular Opinion: But paying all cash can serve as a huge opportunity for an alternative type of BRRRR.Here's what I did on a recent property - I purchased all cash for 77k, put 8k of work into it, 1.5k in closing costs.

To do so, Michigan statute requires them to be personally served - wll they are living at the rental, so easy to find!

If the price that makes the property a good deal does not work for the homeowner or they would be better served by a real estate agent, refer them to someone who will provide the most value to them.

This can serve as a Cure Notice, and give the parents the documentation that they say they need to move forward.If you aren't willing to move forward on an eviction, then the Cure Notice may be as far as you can go. 

I would be more inclined to serve them a 10 day notice to comply (or equivalent in your state), which would cover many bases - let the tenants know that this is their issue, let tenants know that this is serious, and get closer to eviction if it doesn't resolve.  

And 2) Is there possibly some compromise you guys could come to before this goes any further (i.e. before “legal papers” start getting served over a garbage disposal)?

My lawyer served a 30 day notice to terminate a lease and goes to court Friday for that.

But keep searching and looking at things in different ways, that’ll serve you wellBest of luck!