first deal in the works maybe?

[Shequann Burrwell]

so i got a call from a seller looking to sell his deceased mother's home after 10 years of paying for the taxes and leaving it unoccupied. the home has been through probate but hes isn't sure if deed is in his name. he does know that in his mother will the proceeds of the homes sale are to go to him and 6 other grand children. he tried to sell it before but with no luck with a realtor. my questions are do the 6 grand children and the son need to sign my contract? what to look for when estimating rehab costs for this home? whats a good exit strategy that i can use in this case? and should i go with a lawyer to close or find a title company to handle it all.