All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is permissible for a father to gift his property to his children during his life on the condition that he is just in dividing it amongst them and provided they possess the property and dispose of it as they wish. However, in case this property did not become in their possession and they did not fully have the power to dispose of it as they wish, then the gift is not valid. If he dies upon this condition, then his property is considered an inheritance and it should be divided according to Islamic Law of inheritance, whether he registered it in the name of his children or kept it in his name.
For more benefit, please refer to Fataawa 94685 and 89947.
Allaah Knows best.