No. You can borrow money to buy a house outside the prison. As long as you meet the conditions of bank loan, you can apply for mortgage loan. However, if it is known at the bank audit stage that the borrower is serving his sentence outside prison, the loan may be refused in order to control the risk. Mortgage loan, also known as "mortgage loan". Refers to a loan method adopted by some national banks. The borrower is required to provide a certain amount of collateral as loan guarantee to ensure the repayment of the loan at maturity.