I usually go to the notary office twice, the first time I get the form for consultation, and then I go back to prepare the materials. The materials basically include your mother's death certificate, the personnel documents of your mother and any heirs, and the property certificate (that is, the passbook or certificate of the subsidy).
All heirs go to the notary office and take everything with them. Get the inheritance certificate after handling, and the heir certificate will get the money.
4 Full cost 200 yuan