The maximum amount of personal commercial housing loan is 50% of the total price of purchased commercial housing (the principle of lower evaluation price and transaction price for personal second-hand commercial housing is implemented). Where the relevant regulatory provisions change the loan amount of individual commercial housing, such provisions shall prevail; The fluctuation range is 10%-20% according to personal work income, personal bank credit information and local bank policies. Under special circumstances, the maximum amount approved by tier-one branches or directly affiliated branches shall not exceed 70%. The answer from my love of casting nets.