Which document is typically used to secure a loan with real property?

A mortgage is the document used to secure a loan with real property. It serves as a legal instrument that creates a lien on the property in favor of the lender. By signing a mortgage agreement, the borrower grants the lender the right to take possession of the property if the borrower fails to repay the loan according to the terms of the agreement. This way, the mortgage provides the lender with a form of security for the loan, as it ensures that the lender has a claim over the property until the debt is fully paid.

In contrast, title insurance protects against losses related to defects in a title to real estate but does not itself serve as a means of securing a loan. A warranty deed conveys ownership of the property from one party to another and guarantees the title to the property, but it does not secure a loan. A lease agreement outlines terms for renting property but does not involve the borrowing of funds nor security for a loan. Thus, the mortgage is specifically designed for the purpose of securing loans, making it the correct answer to the question.