Who should I look for to return the house to Jincheng No.1 for property right certificate?

Housing and land management bureau. After both parties handle the transfer formalities, the buyer shall submit an application to the municipal or district (county) housing and land administration bureau where the house is located within three months with the relevant documents and materials such as the house sales contract issued by the real estate exchange. You can get the real estate license within 6 months of staying in the new house. If you buy a house at one time, you can get the real estate license directly.