1. If the man pays the down payment to buy a house before marriage (before marriage certificate) and repays the loan after marriage, the house will still be the man's at the time of divorce, but the compensation amount should be half of the repayment amount after marriage and the value of the property appreciation part (if any) corresponding to the repayment after marriage. Second, it is the common property of husband and wife to buy a house after marriage. If you don't want to share it equally, both men and women can sign a property agreement. For example, the house is yours and the car is hers. Notarization is not required, and both parties sign it. You don't have to sign before marriage, and it's the same after marriage. If you want to sign a property agreement, you can ask a lawyer to write it or consult a lawyer how to write it, so as not to invalidate the written agreement.