You can apply for a real estate license. Pay deed tax at the tax window of Lingdong Sub-center of Shuangyashan Real Estate Registration Center with the purchase invoice and purchase contract (different tax rates). It is necessary to issue a house certificate in the real estate department where the household registration is located and where the house is purchased. If there is more than one set, pay 3%, and if it is less than 90 square meters, pay only one set 1%.