Father passed away, how do I find out who his house was left to?

I am going to assume your father had his principal residence in Georgia. If not, this answer may not be correct. If your father had a Will and the Will was offered for probate, then you can obtain a copy of the probate court's entire file, which would include a copy of the Will. You would call the probate court of the county where he had his principal residence and ask them if they have a file for him. If there was no Will, then the property would have passed to his heirs in accordance with state law, except to the extent that a year's support award applied to transfer it elsewhere. If he owned the property with someone else as joint tenants, then his interest in the property automatically transferred to the other owner at his death. You can determine how he owned the property by checking the records of the Superior Court in the county where the real estate is actually located, searching under your father's name.