My parents have been involved together in real estate for most my life.   

I have interest to the parent company. 

My wife and I have decided to buy our first rental property, at the same time that her parents were selling their home.

Curious if damage occurred in my stall, would pursuing a claim fall under Buildings Insurance, Renter's Insurance, or someone's Auto Insurance, mine, or the parent of the underage youth?

You'll need agreements and documents in place outlining the parent-child relationships of the companies, spanning multiple states' real property and asset protection rules.

If not at least 25 years old I would get parents to cosign unless they pay up front, which I guess the would using Vrbo or Airbnb.

When you do get to buying a house consider a duplex “house hack” with FHA loan, or perhaps you could figure that in college with a parent co-signing the loan and you can rent out rooms to buddies.

Similar to above but using a Series LLC as Parent/Child.

I am looking for a way to refinance repairs to my parent's old home that suffered fire damage some 8 years ago.

I was able to collect partially from parents who cosgined for their college student.