Need help with potential probate

[Sam M.]

Dear BP members, 

I spoke with a potential seller today who has physical possession of his son's house. His son and son's wife are on title. Both son and wife have passed. No will or living trust. The son has two kids who are willing to cooperate. The son's wife has family too. The son had been trying and had success in getting the house in his name before he passed (maybe). He has a pile of court papers but doesn't know what they are or what they mean. 

I need help but with this - maybe I could partner with someone local who is an expert in probates? Local means Inland Empire. 

Zillow $450
Mortgage: $0
Back Taxes: $13K
Seller: Motivated
Situation: Messy

Your comments are appreciated. 

Sam