It may depend on if you want a more formal procedure, or added protections such as all the inspections that go along with a traditional sale.

I unfortunately had to shut it down due to medical reasons.

Both of our medical needs (and costs) have resulted in us needing to sell our house.

Even as a physician, and I'm not sure I want a medical student or resident doing trauma surgery or open heart surgery on my loved one ;)

What works for travel medical professionals is different than what corporate renters are looking for, which is different than insurance placements, etc. etc. 

I need to know what forms I need or what procedure I should take to ensure I get paid at or before closing. 

I'm getting around 70% LTC for a $12M medical office building I'm doing.

However, there may be certain exemptions or procedures available in your jurisdiction to avoid reassessment in specific situations, such as when transferring property between family members.The approach suggested by the tax assessor office, where Aunt A provides evidence that she was only a co-signer and has no ownership interest in the property, could help support your case for avoiding reassessment.

@Viral Mehta why haven't you already implemented these procedures to test them out while you are still local?

Your parents decide they need their cash back for medical reasons.