Is it permissible for someone who has repented from taking an interest-based loan to benefit from the difference between the selling price of the house he bought with the loan and the amount of the loan repayment, knowing that he made renovations to the house?

It is permissible for the borrower to benefit from the difference between the sale price and the loan amount, because the loan enters into the possession of the borrower and becomes a debt upon him, whether the loan is interest-based or not. However, he sins in the case of an interest-based loan due to engaging in usury.