My grandfather passed on his property to my dad. We have the inheritance document (vibhaga palupatti) and all the property tax receipts. Is this sufficient to get the property registered in my dad’s name?

While the inheritance document and tax receipts are important, they are not sufficient to register the property in your father’s name. You will need to file a formal transfer of property deed with the relevant authorities, along with the inheritance document, tax receipts, and any other required documentation.