Who owns the home??

The parents' Wills should be submitted to a court for probate (proving -- that a Will is the Will of the person who died).  The executor can then record a Distribution Deed (sometimes called an Executor's Deed) distributing the home to your cousin.  His daughter, as the beneficiary under your cousin's Will, can then probate his Will and record a Distribution Deed distributing the home to her as the sole beneficiary under your cousin's Will.  Please keep in mind that a Will has no legal effect until a court admits it to probate. Note also that even if your cousin had no Will, since the parents left the home to him in their Wills, it would pass to his heirs at law, who are his children, not his siblings.  The home would only pass to all the parents' children (and to the children of any child who predeceased them) if they had no Wills.