An Agreement to Modify Promissory Note Secured by a Mortgage is a document used to modify the terms of a promissory note that is secured by a mortgage. This agreement allows the borrower to modify the terms of the promissory note, including altering the interest rate, loan amount, maturity date, and other details of the loan. This agreement is typically used when a borrower is unable to keep up with the original terms of the loan agreement and wants to modify the promissory note to make it more affordable. There are two types of Agreement to Modify Promissory Note Secured by a Mortgage: a standard agreement, which is used for generic modifications, and a secured agreement, which is used when the loan is secured by collateral. In the secured agreement, the lender may require the borrower to provide additional collateral to secure the loan.