It takes five years of social security to buy a house in Shanghai.

If the social security or personal tax payment certificate for more than 5 years does not require continuous payment, it is allowed to suspend payment halfway for up to three months. Payment is discontinuous. Non-local resident families whose foreign household registration (1) does not have any residence under the family name in Shanghai and who have paid 60 months of social insurance or personal income tax in the 63 months before the online signing date are restricted from buying 1 house; (2) Non-resident families who own 1 set or more houses in this city are suspended from selling their houses in this city; (3) Non-Shanghai registered families who have paid social insurance or personal income tax for 60 months within 63 months before the online signing date will be suspended from selling their houses in this city.