2. To issue a certificate of no room, you need to bring your husband and wife's ID cards and go to the window of the real estate management bureau or the housing management bureau in the government service hall. If you have minor children, you also need to provide a household registration book and a single page for minor children.
3. If the place where the house is purchased and the place where the household registration is located are in two different cities, you need to open one in the Housing Authority where the household registration is located and one in the Housing Authority where the house is purchased. Among them, mortgage purchase requires a copy of "mortgage" and "property right".