1. There is a notarized will. In this case, other children do not need to sign, and the housing management department can go through the formalities directly according to the notarized will;
2. There is no notarized will. In this case, other children need to sign to confirm the validity of the will.
Confirm the validity of the will should meet the following four conditions:
1. The testator must have the capacity for rights and conduct. Citizens who have reached the age of 18 and are mentally normal are persons with full capacity. Only in this way can he make a will;
2. The content of the will must reflect the true meaning of the testator. If it is forced, deceived, and contrary to the true meaning of the testator, it is invalid;
3. The contents of the will must comply with the laws and policies of China;
4. Will must be legal. There are notarized wills, oral wills, recorded wills and written wills.
To sum up, if there is a notarized will, because the documents (wills) issued by the notary office are higher than others, there is no need for other heirs to sign when the house is transferred. If there is no notarized will, other children need to sign to prove the validity of the will.
Legal basis:
Article 133 of the Civil Code of People's Republic of China (PRC)
A natural person may make a will and dispose of personal property in accordance with the provisions of this law, and may appoint an executor.
A natural person may make a will to designate personal property to be inherited by one or more legal heirs.
A natural person may make a will to donate personal property to an organization or individual other than the state, the collective or the legal heir.
A natural person may establish a testamentary trust according to law.
Article 134
A self-made will is written and signed by the testator, indicating the year, month and day.
Article 135
A will that entrusts others to write on behalf of others shall be witnessed by two or more witnesses, and one of them shall write on behalf of others, which shall be signed by the testator, agent and other witnesses, and marked with the year, month and day.
Article 136
Printing a will should be witnessed by more than two witnesses. The testator and the witness shall sign on each page of the will and indicate the year, month and day.