Which document is used to secure a loan for real estate purposes?

The document that secures a loan for real estate purposes is the mortgage. A mortgage is essentially a legal agreement in which the borrower pledges their property as collateral for a loan. When a mortgage is executed, the lender gains a security interest in the property, meaning that if the borrower defaults on the loan, the lender has the right to take possession of the property through foreclosure.

The deed, while related to property ownership, is a different document that actually conveys title from one party to another. A lease pertains to the renting of property and does not involve securing a loan. Title refers to the legal right of ownership to the property but does not itself serve as a mechanism for securing loans. Thus, the mortgage is the correct answer as it serves the specific purpose of securing the loan against the real estate.