After death, the main heirs of those who have property are spouses or children. Some elderly people think that their children are too unfilial to let their children inherit the property, but they want to skip their children and let their grandchildren inherit it directly. The grandson is not within the scope of his grandfather's legal successor, so the testament method will not work. If you want to stay, legacy can be applied. Grandson is not the legal successor of grandpa. The will made by grandpa is a legacy in nature. If the legatee wants to own the estate, he should express his intention to accept the legacy within two months after the will takes effect.
 There are several ways for a testator to make a will:
 Self written wills, written wills, oral wills, notarial wills, etc. It is worth mentioning that among these kinds of wills, the notarized will has the highest probative power. Therefore, if grandpa wants to make a will for his grandson's house, he can notarize the will to enhance its effectiveness. After the death of grandpa, the grandson can handle the house change registration according to the notarial will, so as to obtain the grandpa's house property.
 Article 42 of the Opinions of the Supreme People's Court on Several Issues Concerning the Implementation of the Succession Law of the People's Republic of China
 The testator has made several wills in different forms with conflicting contents. If there is a notarial will, the last one shall prevail. If there is no notarial will, the last one shall prevail.
 Article 20 of the Inheritance Law of the People's Republic of China
 A testator may revoke or alter his own will. He has made several wills. If the contents of the wills conflict with each other, the last one shall prevail. However, a notarized will may not be revoked or altered by self written, proxy written, audio recorded or oral will.