The property right of the old house is very complicated. If you haven't bought it, it depends on whether you have the right to use it. If you have this house in property right card, you can apply for the title certificate of the right to use public houses for sale with the owner in property right card. Very cheap. In Shanghai, it is 40 thousand to 50 thousand (total price) You said you can buy it at any time, so buy it. You can pay the down payment after the mortgage, but even if you have a second suite, make sure there are no other properties under your name, otherwise it will be restricted. This process takes a long time. First, you need a suite to apply for a property certificate, and then mortgage. At least a month and a half.

The situation of after-sale public houses is more complicated. For details, please contact 962269 (Shanghai Real Estate Trading Center Service Hotline).